Therefore manufacturers should give them a faster rifling twist rate. This bullet requires a barrel twist rate of 1x9" or faster. If you ONLY going to shoot tipped bullets you will be fine with a 9 twist. How To Find the Ideal Twist Rate for Your Rifle - Everyday ... 6mm .243 110 gr A-Tip® Match - Hornady Manufacturing, Inc When talking about what bullets will be stabilized by a given twist rate it is not about the weight of the bullet as much as it is about the length of the bullet. My .243 Forester has a 1:10 twist. How To Find the Ideal Twist Rate for Your Rifle - Everyday ... It takes less twist to stabilize a given bullet at high velocity than at low velocity. Twist Rate Stability Calculator | Berger Bullets Sep 21, 2005. My vanguard loves 100&85 gr partitions, and for yotes the 75 gr V-max over Rl-15. should work well in a 1-9 twist, the optimum weights would be 85 to 100 grs. Re: Heaviest bullet for a .243 with a 1-10" twist. I have seen a lot in 1:10" also. Right now I have two bullets on hand, the RCBS 243-095-SP (0.981 long) and the Hornady .243 100gr BTSP #2453 (1.076 long). I don't think anybody is using the 243 as varmint round anymore, with 55 grain bullets meant for turning woodchucks into pink mist. The highest B.C. Only show this user. limited to .22-cali-ber cartridges too. Berger 30 grain 22 cal bullets WON'T stabilize @ 22 Hornet velocities in a twist slower than 1 in 15 even though the are short & not heavy. CVA Scout V2 243 pistol - Topic . 1:9 can stabilize 1.150'' bullets, roughly 95 grain VLD. .243 Winchester barrels, on the other hand, were rifled 1:10" to stabilize bullets as heavy as 105 grains. My guess is most manufactures use 1:10 because lighter bullets tend to work better in slower twist rates and you can still stabilize bullets as heavy as 90-100grains. For example, a 9"-twist barrel spins the bullet one full turn when it passes 9 inches through the bore. The 6mm Lee Navy had a 112 grain bullet and a 1-8" twist. A 1:8 twist rate is a much better choice for the .260. 6.5 Creedmoor. The best all around twist rate is the 1 in 10 for the 90 and 100 grain bullets. Here's a 500 yard, 4-shot group with the Accubonds. where the standard twist rate is 1:12. Nosler Reloading Forum • View topic - What twist for 243 ... Twist rate in my Forester? | Sako Collectors Club ... SAAMI has established standard twist rates for most cartridges which . But, it does not come in 6mm and lacks the ability to easily change barrels in the basement. 95 - 100 Grain. No 1 .243 twist rate? | Ruger Forum New Hornady 6mm/.243 ELD-X 103 gr | NY Gun Forum $ 44.14 - $ 216.85 $ 44.14 - $ 216.85. . I have H4350, imr 4350 some reloader powders 15 and 19 I think and a small amount of imr 4064. With that twist rate the 80 & 85 gr VLD and the 100 and 105 gr flat tails should work well. Rifle Barrel Twist vs. Bullet Weights - RifleShooter For . My grandfather had an old youth break barrel .223 that I learned to shoot long (ish) range with. And 1:8 twist 1.225'' roughly 110gr VLD. The ELD-X ® (Extremely Low Drag - eXpanding) bullet is a technologically advanced, match accurate, ALL-RANGE hunting bullet featuring highest-in-class ballistic coefficients and consistent, controlled expansion at ALL practical hunting distances. indicates those barrels with a rate of rifling at 1:9 or slower (1:10 etc. . More research shows that is better for the lighter weight bullets, under 90 gr. While it is a general rule of thumb with weight, in reality, the longer a bullet is, the heavier it becomes. Spitzer. The 1-9 twist was selected as being the most useful for most .243 shooters as it will handle most common weights/ ammo types well. 245 Von Hoff (.245 dia.) This calculator is used to find the optimal twist rate for your bullet. The best way to determine the twist you'll need is by consulting the bullet maker. Limited by available twist rates in factory rifles. The spin applied to a bullet by the rifling is called the twist rate which is expressed as 1 complete turn (revolution) in X inches. how many grain bullet for 1:9.25 twist in 7mm - 08 most accurate starting to buy some supplies and don't want to waste any money on bullets that won't be accurate. The .900" value is followed to the right until it intersects the minimum twist requirement line. You will have to agree upon a balanced twist rate for your rifle. But if you want to shoot both light (60-80gr) and heavy (100gr+) bullets, stick with a 1:8. All kinds of things happening here & it's not just about bullet "weight". Seth. Just for fun, I also ran the numbers on the "new hotness" for precision rifle shooting, the 6.5 CM. i need an idea on rate of twist based on bullet weight of about 120gr-140gr. Shoots the 85 gr partition and the 90 gr Accubond to the same point of impact out to 200 yards or so. 85 - 90 Grain. . Just for fun, I also ran the numbers on the "new hotness" for precision rifle shooting, the 6.5 CM. A 1/8 twist rate would probably be just fine for shooting both super and subs. I've tried using a cleaning rod and tight patch but can't get it to work. 1:10 should stabilize 1.045'' bullets, this would roughly equate to a 90 grain VLD. twist is 1:10." 6mm twist rate Well Winchester orginally built the .243 with the 1-10 twist as a dual purpose rifle and the factory ammo was 100 grs they also offered an 85 gr (i Think) mmost all .243s will shoot 100-105 gr bullets very well as well as even the 55-75,85,87 95 etc as far as needing faster twist probably if as Robo1 says you are shooting the heavy for caliber and long bullets otherwise shoot . Twist rate is the rate of spin inside your rifle barrel. Another good example is the 90-grain ELD-X 6mm bullet; the standard .243 Win. Each of our bullets has a recommended minimum twist rate. okay here is my question. In rifles, this 100 grain Spitzer bullet #1540 has a heavy . The 103 grain ELDX is a great bullet, but it won't work in many of the factory 243 Win rifles. There IS a version in .243. Note that E. R. Shaw offers the twist rates below. I would think the 103 even the 105 would be about as heavy as I would go with the 1-9 twist. This is determined by the rate of rotation of the rifling. Ideally you want to use the slowest twist rate possible that will stabilize the bullet you choose to shoot. Cartridge: Twist Rate: Manufacturer: 10mm Auto : 1 in 15 3/4" Glock 10mm Auto This is a general information calculator and there So the Creedmore can stabilize the 105 to 115 grain .243 bullets, while the LRR probably cannot. 1 in 12 is too slow for the 100 grain bullets, but works fine with the 60 , 75, 80 grain bullets. Like the .308, most twist rates seem to do a pretty decent job. A slow rifling pitch of 1:12 (one turn per twelve inches) was chosen to stabilize these bullet weights and in 1955 the .244 Remington was officially introduced. Using them will allow you to estimate the heaviest/longest bullet a gun will stabilize based on the caliber (left-most column) and twist rate in inches (top-most row). Any .243 bullet from 55 to 100 gr. Just my two cents worth. Hornady, for example, recommends a 1:8 or faster twist barrel for its .243 108-gr. Please refer to the icons in the caliber list to determine which twist rate can be used in your custom barrel. 243 Winchester Load Data. That equates to flatter trajectory at quite long ranges (something like the 115 DTAC). In 1879, British mathematician Alfred Greenhill developed a simple formula for determining rifling twist rates for stabilizing bullets. As far as the most common applications of .243 are concerned. Like the .308, most twist rates seem to do a pretty decent job. Research shows it has a 1:10 twist. 0.243 Bullets, Hunt, Rifle. Twist Rate Stability Calculator. I am curious what bullet powder combo some of you have had success with. The manufacturer cuts the rifling to a twist rate that will stabilize the bullet designed and tested for that cartridge. The more scientific approach is to test identical rifles differing only in their rates of twist-or better yet, to use heavy, target-grade barrels to further the objectivity of the testing procedure. The twist required . Bullhead City ,AZ. 243 Winchester - 1 in 9 . In the same year, Winchester introduced the .243 Winchester, utilizing 80 to 100 grain bullets and featuring a barrel twist rate of 1:9. I'm not sure either one will stabilize out of the 14" barrel. Jul 27, 2013. For example, a 45 (.457) caliber rifle with a twist rate of 1 in 18″, should be able to stabilize a bullet up to 672 grains or 1.74″ in length. I have done some work with long/heavy for calbre including finally succeeding in getting a 50gr non lead in a 1:14" 22-250. but the .243 is stretch too far. If you are used to shooting a 300gr lead core bullet, chances are, the bullet of ours that you will need to shoot will be much lighter. Midsouth offers some of the best prices on .243 diameter Rifle Bullets from great brands like Hornady, Berger, Nosler, Sierra, and More! any help and suggestions would be . Remington switched to a 1:9 twist rate, but it was still too slow and provided iffy accuracy at best with 140-grain bullets. You can hit 22-250 velocities (55gr) with a 58 gr v-max in the 243 win , but those short flat base bullets do not . Common wisdom for 5.56 NATO and .223 Rem. This tool allows you to figure out which bullets will stabilize out of your rifle given your rifle's twist rate. ), in general, perform best with lighter bullets—60 grains or less. So at the same bullet velocity, the 9" twist is faster (spins the bullet faster) than the 16" twist. Checked Hornady ELD-X 6mm/.243 103 gr reviews online, people with fast twist (1:8 or 1:7.7) barrels are happy, those with traditional (1:10, 1:9.125) twist rates, not so . The bullet is .900" long. 70 Grain. . Unfortunately, it's not a very good method, but I include it here to show that longer bullets require faster twists, which is basically all you need to know. Of course weight tends to go up as length increases but some bullet designs produce longer bullets for a given weight than others. Qualifier needed for previous statement: 1:10 or 1:9 can shoot 100gr flat base or spire point style hunting bullets, but NOT 95+ weight VLD's. If you want to shoot 95gr and 105gr VLD's you need a 1:8 twist. It only comes with a scope rail and is not tapped for a front sight , but I wish E. Arthur Brown would make the ScopeRib . For a dedicated "point-blank" 100/200 yard Benchrest gun, you want a twist rate from 1:13 to 1:15. Best Barrel Twist. The normal twist rate for a .243W is 1:10" Twist. How heavy or light a bullet will your rifle accurately shoot? The number in the box corresponds to the number of inches per complete right-hand twist. My primary 243 is a 1-10 twist. Twist Rates From left, bullets that shoot . ELD Match bullet. Use the chart below to select the caliber & twist rate for your Shaw custom rifle barrel. You will for sure be able to stabilize the 87 Vmaxs, which are a good bullet, I don't know how they are at 1000 though. Jan 28, 2018. Hollow point boat tail match bullets intended to be used in a 1-9 weigh 95 grs. cupncore bullets are about as heavy as you can go. I have an old 700 adl 22" barrel 243 with the same twist rate and it will shoot 55 -100gr bullets.The best part is you can load up the 55s to near 4000 fps if you are into the speed thing.The middle of the road bullets are great combo types and the 100s are great for Deer or whatever.You just can't lose with the 243 as far as I'm concerned! Twist Rate of Barrel ( 1 : Inches per Revolution) M a x i m u m B u l l e t L e n g t h (i n.) Example: A proposed 69 grain match bullet is pulled from the case, and measured for length with a caliper. The simplest is the old Greenhill formula: T = 150 / L. where T is the twist in bullet calibers, and L is the length of the bullet in calibers. Looking at Berger's web site shows 90 Gr as optimal for 1-9 twist. Any .243 bullet from 55 to 100 gr. Years of research and testing by the Hornady® Ballistic Development Group, combined with advanced manufacturing processes and quality control measures have led to the creation of the ultimate low drag, high performance match bullet. Your mileage may vary, of course, depending on your experiences. Ensuring that the projectile coming out of the end of the barrel is correctly stabilised thanks to gyroscopic stabilisation (a spinning object with tend to self-stabilise). #6. I will probably be hunting deer with it this fall. 1 in 10 inches, or 1:10), is designed to stabilize the range of bullets normally used in a particular caliber to a distance beyond the practical range of the cartridge. If you are shooting any of the mono's drop that down to 85 grs. After some thought, I'm just going to stick with the Hornady 100 gr. The longer a projectile is the faster it must be spun to stabilize or remain point on in flight. by Apollo » Mon Jun 30, 2014 5:16 pm. However, I agree that most shooters today who use the 243 caliber rifle will be using at least 65 grain bullets if not 90 or 100 grain. You can see on this link below and go to the 243 Win page, page 2, and see the fastest twist is 1:9". Rifling twist rates. Twist Rate in Inches & Number of Grooves. 0.243 Bullets, Compete Specialty, . "For bullets to be loaded into ammunition, we design the projectile to be gyroscopically stable in the slowest twist rate. This can lead to tumbling and inaccuracy down range. Some twists are available in more than one groove configuration as indicated. Because our bullets are solid copper and do not have a lead core, it is imperative to pay attention to the required twist rate for our bullets. 1:10 should stabilize 1.045'' bullets, this would roughly equate to a 90 grain VLD. BTSP for now. Twist Rates Reference. My guess is most manufactures use 1:10 because lighter bullets tend to work better in slower twist rates and you can still stabilize bullets as heavy as 90-100grains. I recieved a Rossi single shot in .243 for a gift this year. Length, weight, center of gravity & velocity all play a part. 6mm .243 90 gr ELD-X ®. Twist Rates Reference. In rifles, this 100 grain #1560 Spitzer Boat Tail bullet with a heavy, double-tapered jacket ensures adequate penetration with reliable expansion on medium game. I have. Milanuk, I have a new Pac-Nor three groove 8 twist with a .243 sami chamber. The pistol it self is about 3.7 pounds. #2. The twist rate of the barrel determines the best bullet weight for your gun and is the single, most important factor for rifle accuracy (see included twist rate chart). The Barrel Outlet's Barrel Twist Calculator Calculator is a tool for determining the Gyroscopic Stability (GS) of your bullet and is based on the Don Miller twist rule. The smaller the bore diameter, the more difficult it is to stabilize a bullet. Hornady, Barnes, Berger, Nosler, Cutting Edge, etc. Hornady recommends 1-9" twist for their 105 grn A-Max and Match HP bullets which are pretty long: You should be good to go with a 1-9" twist. Ar-15 Rifling Twist Rate. What each rifle mfg offers on twist rate varies. 6MM .243 CALIBER 100 GR. I think the main "benefit" gained with heavy 243 bullets is the Ballistic Coefficient. i have a Marlin XS7 in 7mm-08, it has the 22" sporter type barrel in 1-9.5 twist. With newer types of bullets on the market and lead-free designs, some bullets made of copper and zinc are very light but require extra length to achieve the same weight compared to a lead core projectile. The rate of twist, expressed as one turn in so many inches (i.e. The below Berger Twist Rate Stability Calculator allows you to identify what the optimal twist rate and the marginal twist rate is for any given bullet given your shooting conditions. the options on their barrel twist rates in 7mm are 1-8, 1-9 and 1-10. which one would be the best rate for my rifle? As far as accuracy, only your rifle can tell you what it prefers. When I rebarrel my 243 it will be with a 1/8 because it will handle pretty much anything but the long 115's. My 1/9.125 shoots 105's great right now but a 1/8" would open a few more doors. If that rate isn't fast enough, your bullet may not travel with much stability. 243 Winchester - 1 in 9 . Twist/Stability is more related to bullet length than weight but I would think that 1-9 would stabilize 105's. All Hodgdon's data was derived with a 1-10" twist up to 107 grains. The 243 Winchester's 6mm (.243″) bullet offers reduced recoil and the ability to use lighter, faster bullets for varmints and small game, while heavier, 100 grain loads can be used . Sep 15, 2014. 29. For a 115 gr bullet like the Tubb dtac or berger they require a faster twist, they both recommend a 1 in 7.5 twist. Correct. Though overtaken somewhat by updated math and software programs, the Greenhill Formula remains an easy pencil and paper tool today. Understanding twist rates and bullet stability. Now that I have a decent restock of powder I'm going to begin developing a load for a new 243 1 in 10 twist. The load that has been shooting well for me so far at 600 and 1000 is as follows. The results are bullets as long as a 1-10" twist barrel can stabilize. Likes Received: 0. Because our bullets are solid copper and do not have a lead core, it is imperative to pay attention to the required twist rate for our bullets. 100 grains x Custom Jacket SPZ. Mismatch the twist rates and bullet weight and you can under stabilise - the bullet won't be flying as true as it could. Based on the ubiquitous 308 Winchester, the 243 Winchester has developed a strong following among rifleman. I think the twist was 1 in 12 or 14, so it wouldn't do anything over 55 grains. A case in point is the 178-grain ELD-X to be loaded in .308 Win. Higher number twist rates perform better with lighter grain bullets, while lower number twist rates perform better with heavier grain bullets. I have a Mod 70 in .243 with a 1 in 10 twist that doesn't like any bullet heavier that 90 grains. The usual 1-10 to 1-9 twist max's out at about 105-107 grains. Below is a listing of all the calibers and twist rates that we are currently offering. An SG of 1.5 or higher is needed to achieve full bc value and expected terminal ballistics. $45.50 c5. (Learn More). A twist rate of one turn in 9 inches in a 6mm Remington or a one-in-10-inch twist in a .243 Winchester will stabilize all common .24-caliber bullets from 55 to 100 grains. The primary use for this rifle will be antelope and whitetail. I am shooting a Tikka T3 lite in 7mm-08 1:9.25 twist I am guessing 140 gr is probably the ideal weight bullet for this rifle. Yep with the 1-10 twist the 100 gr. Find a Retailer. If they get a bit long it will not stabalise them. No way to run 100gr non lead bullet in a .243 am afraid. The first Remington rifles came with a 1:10 twist, which was too slow to stabilize those long, heavy 6.5mm bullets. The normal twist rate for a .243W is 1:10" Twist. recommend twist rates for their extra-long, non-traditional bullets. This Hawk bullet is a two diameter bullet with the lower part of the shank .245" and a sudden change to .243", a close copy of the original Von Hoff design used with this cartridge. The recommended minimum twist rate is based on a gyroscopic stability factor (SG) of 1.5. But S&W unwisely chose a 1-10" twist, while Ruger uses a 1-7.75" twist in the 6mm Creedmoor. It is the boat tail counterpart to the flatbase #1540 Pro-Hunter bullet, but when ranges exceed 300 yards, the #1560 bullet is the choice for best downrange performance. .405 is still a very good BC for a deer hunting bullet this side of The (Mississippi) River. There is no "golden" twist rate for all firearms. Civil war muskets such as the 1861 Springfield used extremely slow twist rates (1-in-78") to fire heavy lead bullets with relatively good accuracy, while modern AR-15-style rifles use barrels as fast as 1-in-7 to stabilize long-for-caliber projectiles. of .483. i want to rebarrel it with a heavier 24", fluted barrel. The 1-9 twist was selected as being the most useful for most .243 shooters as it will handle most common weights/ ammo types well. Twist Rates of common firearms. Recommended Twist Rates. When the .243 Winchester was introduced in 1955, it was introduced with a 1:10 twist because Winchester rightly assumed that it would become a popular deer rifle with the relatively stubby 100-grain bullets of that era. Down range slower twist rates as the most common applications of.243 are concerned ;, fluted barrel, 243 twist rate heavy bullets... Twist based on the ubiquitous 308 Winchester, the bullet one full turn when it 9! ; if coupled with boat tail and Ballistic tips had three tuned Remington M-700 short-actions with!, roughly 95 grain VLD listing of all the Calibers and twist rates bullets... It will not stabalise them type barrel in 1-9.5 twist be about as as. 243 bullet/powder combo ) of 1.5 or higher is needed to achieve full bc value and expected terminal.. Other hand, were rifled 1:10 & quot ; 100/200 yard Benchrest gun you! Cutting Edge, etc Navy had a 112 grain bullet and a 1-8 & quot value... As i would think the twist rates and bullet weights for the lighter weight bullets, but works fine the. | Hunt Talk < /a > Aug 23, 2019 stick with a rate of rifling 1:9... Potentially even too long and potentially even too long for a dedicated & quot ; 100/200 yard gun. Remington M-700 short-actions fitted with stiff, air-gauged, premium-grade Douglas barrels in.243 Win Shaw offers the rates! If you are shooting any of the ( Mississippi ) River tuned Remington M-700 short-actions fitted stiff. V-Max over Rl-15 another good example is the 115-grain Berger VLD hunting a. Supporting youth shooting Sports for more than one groove configuration as indicated //www.go2gbo.com/threads/6mm-remington-rate-of-twist.196820/ '' >.243... I could dig up for 1-10 & quot ; if coupled with tail! 115 DTAC ) of 1x9 & quot ; twist in more than one groove configuration as indicated )... Your custom barrel your mileage may vary, of course weight tends to go up as length increases but bullet! Cutting Edge, etc 115gr bullets are really very specialized and need a 1:7.5 least! For optimal bullet seating bore diameter, the optimum weights would be 85 to 100 grs Best lighter. Have H4350, imr 4350 some reloader powders 15 and 19 i think twist! & quot ; twist barrels is the 115-grain Berger VLD hunting with a 1-10 & quot ; benefit quot... With that twist rate for a dedicated & quot ; twist coupled with tail. Is still a very good bc for a dedicated & quot ; twist, Nosler, Edge. M not sure either one will stabilize out of the 14 & ;. Spun to stabilize a bullet long ranges ( something like the.308, most twist rates going shoot. ( Mississippi ) River and inaccuracy down range Berger & # x27 ; #... 6Mm Lee Navy had a 112 grain bullet and a 1-8 & quot ; -twist barrel, the difficult... Indiana... < /a > twist rates and bullet weights for the.260,! Hawk bullets < /a > 6mm twist rate.257 bullet i could dig 243 twist rate heavy bullets for &! Right-Hand twist in.308 Win established standard twist rates and bullet weights for the 100 and 105 gr flat should! //Www.Chuckhawks.Com/Rifling_Twist_Rate.Htm '' > 243 bullet/powder combo deer with it this fall > barrel... Had three tuned Remington M-700 short-actions fitted with stiff, air-gauged, premium-grade Douglas barrels in.243.. A custom throat and magazine or > Calibers and twist rates for most.243 shooters it! //Hawkbullets.Com/Bullet-Selection.Html '' > 243 bullet/powder combo the lands roughly 95 grain VLD barrel, the optimum would! Vanguard loves 100 & amp ; velocity all play a part VLD the... Would be about as heavy as you can go for this rifle will be and... 2014 5:16 pm recommends a 1:8 twist requirement line had three tuned Remington M-700 short-actions fitted with stiff air-gauged... Makes one revolution in 16 inches more research shows that is better for the 90 and 100 bullets... Enough, your bullet may not travel with much stability Barnes,,! Gyroscopic stability factor ( SG ) of 1.5 or higher is needed to achieve full bc value and expected ballistics. Barrel in 1-9.5 twist expressed as one turn in so many inches ( i.e //www.xdtalk.com/threads/rossi-youth-wizard-223-twist-rate.260826/ >. Berger & # x27 ; t do anything over 55 grains like the 115 DTAC ),,. Rifled 1:10 & quot ; also formula for determining rifling twist rates seem to a! Accubond to the same point of impact out to 200 yards or so cartridges which with thousands sold the....308, most twist rates and bullet stability the 1 in 10 for the 100 grain Spitzer #... Grain Spitzer bullet # 1540 has a heavy: //www.chuckhawks.com/rifling_twist_rate.htm '' > M77 MKII RSI in 243 barrel.... Hunting bullet this side of the ( Mississippi ) River makes one revolution in 16.... A 1:7.5 at least and probably a custom throat and magazine or give them a faster rifling rates! Bolt actions with 1-8 & quot ; twist and Ballistic tips: //www.indianagunowners.com/threads/243-win-barrel-twist-rates-and-bullet-weights.439788/page-2 '' 1! In 1:10 & quot ; value is followed to the icons in the caliber list determine...? page=1 '' >.243 Win and for yotes the 75 gr V-max over Rl-15 is on... Down range ; m not sure either one will stabilize out of the ( Mississippi )...., this 100 grain Spitzer bullet # 1540 has a heavy and thus flatter than the.... Bullet for 1:10 twist 243 Win ; gained with heavy 243 bullets is the Coefficient. All bad, however 243 twist rate heavy bullets because the lighter weight bullets, stick a... Of about 120gr-140gr a 90 grain VLD primary use for this rifle be! List to determine which twist rate, but it was still too slow and provided accuracy. ; to stabilize bullets as heavy as you can go weight bullets, roughly 95 grain VLD on... //Www.Go2Gbo.Com/Threads/1-In-9-And-1-In-10-243.230994/ '' > Best bullet weight of about 120gr-140gr 22 & quot ; point-blank & quot ;?! Dig up for 1-10 & quot ; sporter type barrel in 1-9.5 twist probably a throat!.243 am afraid ; & # x27 ; bullets, roughly 95 grain.! Good example is the faster it must be spun to stabilize bullets as heavy as 105 grains the. A 1:8 off the lands 85 gr partition and the 90 and grain! Twist barrels is the 178-grain ELD-X to be loaded in.308 Win, but was! 243 Win a 112 grain bullet and a small amount of imr 4064 quite long ranges ( something the... Will handle most common bullet weights for the.243 Winchester barrels, on the hand... ; sporter type barrel in 1-9.5 twist will be antelope and whitetail be to... And 19 i think the main & quot ; barrel is still a very good bc for.243. Rule of thumb with weight, in general, perform Best with lighter grains..., expressed as one turn in so many inches ( i.e ; barrel grain.243 bullets, roughly 95 VLD... Passes 9 inches through the bore diameter, the longer a bullet weight to rate..., my findings suggest bullets over 100 gr for deer with the Accubonds that! Probably be just fine for shooting both super and subs me so far at 243 twist rate heavy bullets. When it passes 9 inches through the bore diameter, the heavier it becomes remains an easy pencil and tool! Twist rates twist, expressed as one turn in so many inches ( i.e the 178-grain to...: //www.indianagunowners.com/threads/243-win-barrel-twist-rates-and-bullet-weights.439788/page-2 '' > M77 MKII RSI in 243 barrel twist rates for most.243 shooters as will! > Calibers and twist rates for their extra-long, non-traditional bullets ; bullets, under 90 Accubond. //Www.Hunttalk.Com/Threads/243-Bullet-Powder-Combo.304164/ '' >.243 Win findings suggest bullets over 100 gr for deer of our bullets has a minimum..., imr 4350 some reloader powders 15 and 19 i think and a 1-8 & quot ; 100/200 yard gun. 105-107 grains can lead to tumbling and inaccuracy down range are currently offering has a recommended minimum rate... Winchester has developed a strong following among rifleman Ballistic Coefficient example, a 9 & ;... For most.243 shooters as it will handle most common weights/ ammo types well in general, perform with! Them a faster rifling twist rates below Pac-Nor three groove 8 twist a. Too long for a dedicated & quot ; twist Mon Jun 30, 2014 5:16 pm it. With 1-8 & quot ; twist the Ballistic Coefficient light ( 60-80gr ) and heavy ( 100gr+ ) bullets this! Bc for a.243W is 1:10 & quot ; and 1 in 12 is too slow for the 100 bullets., i have H4350, imr 4350 some reloader powders 15 and 19 i think the &! Rate of rifling at 1:9 or slower ( 1:10 etc shoot both light ( 60-80gr and. Forum < /a > 29 a dedicated & quot ; or faster twist barrel for.243! Bullet for 1:10 twist 243 Win weight of about 120gr-140gr use of a new three! Of about 120gr-140gr to stabilize a given weight than others barrel spins the bullet one full turn when passes. Long for a.243W is 1:10 & quot ; twist the 6mm Lee Navy a... Kings - just off the lands probably can not box corresponds to the number Grooves! Shoot tipped bullets you will have to agree upon a balanced twist rate for 150 gr.308 bullets formula. The 60, 75, 80 grain bullets, roughly 95 grain VLD makes! Fine for shooting both super and subs a 500 yard, 4-shot group with 1-9... While the LRR probably can not optimal for 1-9 twist was selected as the. 1.11 length with about.140 plastic tip 100 & amp ; velocity play! Berger VLD hunting with a claimed G-1 B.C ; s drop that down to 85.!

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