Superformance 50gr Vmax: 3345: 222 Rem 50gr. You are using an out of date browser. The average speed loss of the four types of .223/5.56 ammo, with a 9.5″ shortening of barrel length, was 240.75 fps total (from start to finish). It is roughly(if I can believe my comparison chart) equivalent to H322, faster than IMR 3031 and slower than IMR4198. Well I went to the range to try a few new 223 loads and I am confused. 3800: 243 Win Superformance 58 gr Vmax: 3945: 243 Win 58 gr. Try Benchmark instead, a very accurate powder and 25 gr's is what I use in all my 55 gr loads and is over 3K FPS. I have 20+ PDS on hand use it in one of my 22 250 to. I was shooting a Mini-14 with an 18 inch barrel at the time and so ended up settling on a 60 grain Soft or Hollow point bullet over either IMR-4198, IMR-3031 or WW748. Gun Parts - Stocks, Barrels, Actions, etc. 3110: 223 Rem. The velocity with the 69 gr is a little lower, but shoots quite well. SMK, 77gr. 53 vmax, win case, cci 400, 25g Benchmark =1/2 moa at 3200 fps from my 20" RRA predator pursuit. You are using an out of date browser. Several, including H335, BL-C(2), Varget, Benchmark, IMR 8208 XBR, H4895, and CFE 223 have proven to be the most versatile choices with all bullet weights. Hornady's V-Max Bullets feature a polymer tip which enhances accuracy and promotes devastating expansion. I have also found that in fire formed 223 AI brass with a cci no.41 primer 27.5g of benchmark and a 53 Vmax does 3500 fps and shoots 1/2 MOA. I am going to start reloading .223 for my AR's and my Mini. Min Charge Max Charge Optimal Charge Bullet Make Bullet Type Primer Notes; Alliant - RL-15: 69 gr. Hornady 53gr Vmax. 24.8 gr. They aren't exactly the same. My rifle's barrel is only 22 inches long and over an inch of that is lost to the internal muzzle brake, so it doesn't have as much effective barrel length as most .223s but it still averaged 3,212fps with 25.0 grains of Benchmark. 3110: 223 Rem. Cheer's for the reply. I suspect that the powder you are using is working very well with your 75 grain bullets but is a bit slow for the lighter 52/53 grain bullets. Also shoots 1/2 moa and 3200 fps from my 21" pac-nor barreled 223 AI as a fire forming load. I want to get the most velocity and energy. Sent from my SCH-I405 using Tapatalk Hey guys i picked up a tikka 223 with a 1-8" twist barrel. Of all types of 55gr .223 Remington ammunition I’ve tested in my rifle, the V-Max has the highest average velocity with the smallest standard deviation. When using lightweight frangible bullets, avoid firing them in rifles with fast-twist barrels, as their rotational speed (and other factors) can cause them to disintegrate in flight. Years ago when I started loading .223 Remington, I worked up loads using the powders that were available to me at the time. I can get H322 or the CFE223 i know for defo locally. I am using N133 for lighter bullets. Hornady 53gr Vmax. For a better experience, please enable JavaScript in your browser before proceeding. varget and benchmark for 223 - posted in Guns, Loads, Optics and Gear for Varmint Hunting: I've always heard you will get a little more speed with Varget than with Benchmark. I have read the 53gr is very good but you need the faster twist barrel so not for me with the 1/14 22.250 but I use the 55gr on targets to 500yds with very good results . I had some good loads with varget as well. I use 24.9 of benchmark and have Remington primers. 53gr (.290).....@200yds......2622 (fps).......807 (fpe)............drop -2.4".....drift 4.0", 53gr (.290).....@300yds......2313 (fps).......629 (fpe)............drop - 9.8".....drift 9.5". Have some 50gr Vmax to work with and Benchmark in the 24-26.5 seems like something that could work. Still to test in the field but @ 100yrds it looks promising. I am also using … Hornady advertises a velocity of 3240fps for the V- Max, but I obtained velocities about 400fps slower, most likely due to the fact that I was using a shorter barreled rifle with a faster rifling twist than their test rifle. ... 0.87" five round group using 25.3 gr Benchmark My COAL is 2.400, accuracy is V good at better than .5 for all loads. SMK, 75gr. it does state on the site a 12 twist should be used for them. ... My AR has a 20 in bull flutted barrel. of 2.240”. Hogdon says 22.0 start 26.0 max for 53 grain flat base Sierra MatchKing. The cratering could be caused by too large a firing pin hole in the bolt. 24.0 gr. 24.8 gr. By inthedark, February 12, 2011 in ... Only thing with them is that they come out of the barrel with the brakes on. hornady says 26 varget is max however at 170 yards groups are around 1.5 inches all over the place till around 26.5 g of varget brings it down to around .45 of a inch at 170 yards. Or find the right calibre rifle to shoot them in, maybe? I used the Hogdon manual for my data before Hornady had published data for the 53 grain V-Max. I get consistent 1/2 or sub 1/2 MOA groups (5 to 10 round groups) out of a 24" 1/9 twist Savage bolt. It also acts as a wedge, initiating bullet expansion. Going out tomorrow to stretch its legs. As mentioned, .5 grain either side of 25 should be good. Regardless, I've never seen a performance difference. £27 a box for the superformance is crazy now. Test Barrel Lost 25.34 FPS Per Inch (.223 Rem Chambering) How much velocity do you think was lost, on average, for each 1″ reduction in barrel length? the AR-15/.223 Remington rifle featuring a one-in-12-inch twist bar-rel. I am also using … The .22-250's higher velocity makes the results the same as a .223 1:12" but it's not an issue anyway. I'm using Remington 7 1/2 primers and worked from 23.5 up to 24.9 the hotter I got the better the group was getting. [ARCHIVED THREAD] - 53 grain vmax and benchmark .223 10 round group The 7-inch twist is intended primar-ily for heavier bullets ranging from 62 to 80 grains, which it stabilizes very well. For the 55 gr bullets try around 25.5 of Benchmark. One thing is for sure, it will put down a groundhog either way. I'm looking to try Hornady's new 53 grain vmax. My horizontal dispersion was amazingly tight, but the vertical was in the 4" range. Hi guys I just wanted to run something past ya'll that has been nagging at me for the past few weeks. 3240: 22-250 Rem. Sub moa is fine, im loading for speed and cost. 222 Rem. I load my 53 vmax to the lands like a vld. My Benchmark load in my Cooper is 26.5 gr, CCI450, 50 gr VMax or 52 gr Sierra HPBTM, LC brass, 3435 fps and great accuracy. Im getting ready to load up some lighter grain bullets for one of my AR-15 builds. Now let’s look at rifles with the one-in-7-inch twist. You must log in or register to reply here. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Polymer tipped V-MAX ® bullets deliver match accuracy, high ballistic coefficients, wind defying trajectories, and rapid fragmentation upon contact. It is my powder for 50 and 52/53 gr Hornady Ballistic Tips (V-Max/Z-Max/Amax). Wullie Superformance 50 gr Vmax: 4000: 22-250 50 gr. I think I need to either tweak the seating depth a little or lower the charge slightly to get rid of the vertical. You must log in or register to reply here. 24.0 gr. I use 24.9 of benchmark and have Remington primers. 3-7-77 Re: Chrono'ed my .223 Benchmark load w/50 gr VMax [ Re: Pharmseller ] #7604938 03/31/13 Utilizing the data from the 16.5″ barrel, average velocity loss per inch of barrel length was 22.5 ft/sec for the UMC 223 55-grain cartridge, 25.7 ft/sec for the Federal M-193 cartridge, 30.3 ft/sec for the Winchester M855 cartridge, and 22.8 ft/sec for the Black Hills 68-grain heavy match cartridge. My friend's 1:14 22-250 launched them all over the place. Fact/anecdote, it happened. Hornady's .224 53 gr Vmax BT Hornady's .224 53 gr Vmax BT. Also shoots 1/2 moa and 3200 fps from my 21" pac-nor barreled 223 AI as a fire forming load. How to know for sure a reloading supply website is a scam. gr Barnes fully frangible for a particular job, but I wasn't impressed with them at all. Shot off a concrete bench … I can get H322 or the CFE223 i know for defo locally. Got a new 223 bolt with 26 bull barrel factory Remington. Ill be shooting a 1:12 Sako 85. My .223 bolt gun is 26" 1/12, my old varmint AR .223 was 24" 1/9 twist, new varmint AR .223 is 22" 1/8 twist. “Handloading the AR-15 .223 Remington,” we offered tips and data for rifles with barrel twist rates of one turn in 12 inches and one turn in 9 inches. 24.0 gr. rifles—a CZ 527 bolt action and a Sun Devil SD-15 autoloader—to use for this report, and I built a lot of handloads to shoot in both guns. The answer may surprise you. 53 vmax, win case, cci 400, 25g Benchmark =1/2 moa at 3200 fps from my 20" RRA predator pursuit. I have not seen any pressure signs and I went a good bit above the suggested max and still saw no signs of pressure. From Hornady: "The 53gr V-max bullet in the 223 Rem cartridge using Benchmark powder we have a start load of 22.1gr and a max of 25.0gr with a C.O.L. Have a Remington 700 SPS tactical in .223 w/ 1-9 twist and a 20" barrel. I have also found that in fire formed 223 AI brass with a cci no.41 primer 27.5g of benchmark and a 53 Vmax does 3500 fps and shoots 1/2 MOA. i have collected 200-300 brass over the years i … So I was wondering what recipe you all use for this configuration. I had a .342 group and .222 group out of my 223. I would like to use 55 grain bullets for coyotes but im being told buy a few guys that the spitzer style bullets will come apart in the air due to the fast twist. Techniques I chose two of my favorite 223 Rem. Any of these will shoot in a standard 1:14" twist. I have sako 85 1/12 twist 20"inch barrel. It's doing 3300 just a smidge quicker than my previous go to load which was with 52gr amax. It's doing 3300 just a smidge quicker than my previous go to load which was with 52gr amax. Hi. My old 223 load with 53 grain vmax is a no go. VMax have thinner jackets than ZMax. Superformance 53 gr Vmax: 3465: 223 Rem 55 gr. For powder, it came down to Varget and Benchmark with Benchmark being just slightly better in accuracy and 180fps faster. I have measured my head diam just forward of the extractor groove and have no expansion there. 223 Rem 55 gr V-MAX® Item #8327 | 20/Box . 3800: 243 Win Superformance 58 gr Vmax: 3945: 243 Win 58 gr. Superformance 53 gr Vmax: 3465: 223 Rem 55 gr. The 60 Gr V Max will be the test for that. Ill be shooting a 1:12 Sako 85. ... 25 gr Benchmark and a 55gr VMAX for .223 is where I found my accuracy node. ATB . Accuracy, increased range, flatter trajectory, less wind drift and devastating terminal results are all realized with Superformance ® Varmint ammunition. Cases should be sized (us-ing … i have a browning xbolt in 223 and trying for a load with 53 grain vmax. I picked the 1-8" so i can use a wide variety of bullets. I have sako 85 1/12 twist 20"inch barrel. Also used some 36? I had a jug and a half of H322 left over from when I switched to N133 in 6PPC, so I finally worked up a couple of loads in .223 with it. Going out tomorrow to stretch its legs. Can anyone recommend me a fast powder. 223 Remington at 3,465 feet per second pushing the "BRAND NEW, 53 gr V-MAX bullet" that has been optimized for peak performance from the 223 Remington chamber. Hodgdon data shows about 23-23.5 as max with 75/77 gr bullets With the excellent published BC for this 53gr bullet, I couldn't resist trying some out. The 60 Gr V Max will be the test for that. It may not display this or other websites correctly. The rifle is a Stevens 200 bedded in a Stockade stock, aftermarket recoil lug, and a Benchmark 20" 3 groove 1:8" twist barrel. And my old VSSF .22-250 shot well with 50gr Nosler BTs and 55gr V-maxs, but hated 52gr A-max. All have 16 inch barells. 2.250 in. I got it because it is an exact replica of my 300 rum sendero. I load my 53 vmax to the lands like a vld. I love the bullet and had several other loads at .604 and under, but my coal is much longer than 2.25 it's 2.4 and some change, I don't have my info right here in front of me. Picked up a hundred Hornady 75 gr BTHP match and going to work up with some Varget from 20-25 and benchmark 20.5-22.8. 24.0 gr. Superformance 50 gr Vmax: 4000: 22-250 50 gr. After load testing the 53gr Vmax I've settled on 25gr h322. With the 50s, 25.2 grains of Benchmark works well in everything I shoot it through. Powder Bul Weight C.O.L. I have heard some glowing reports on the accuracy and velocity of the .223 Remington when using close to maximum loads of Benchmark. Speeds over a F1 chrony were (approx) 3630fps, 3690 and 3740. Hi 112Savage, i am using the 53 grn V-Max in my .223 AI and am loading an Australian powder called (Benchmark 1). i know a couple fo the lads on different forums that have tried them in 22/250 with 1 in 14 twist barrel and they wouldnt group very well. I know these are getting to be pretty warm loads as I have some primer cratering but NOT flattened primers. with a 50 grain vmax out of my 20 inch RRA I'm getting an honest 3250, and just over 3400 out of my 24 inch bolt gun. Hornady BTHP for my AR that has a 1-7 Twist with a WOA bbl. With my 26" barrel I'm hoping to be going around 3400fps but I havn't gotten to use the chrony yet. The 53gr Vmax has one of the best BCs of any of the "light" .224 bullets I've run across. While the 5.56 NATO and .223 Remington are very similar, due to chamber differences and barrel twist rates, it … Sub moa is fine, im loading for speed and cost. Superformance 50gr Vmax: 3345: 222 Rem 50gr. My 1:12 and 1:8 .223 shoot these fine, usual v-max performance. The tip raises the ballistic coefficient for faster velocity and helps to stabilize the bullet in flight. After load testing the 53gr Vmax I've settled on 25gr h322. Hornady ® Varmint Express ® ammunition is designed around the hard-hitting performance of our famous V-MAX ® bullet. I love the bullet and had several other loads at .604 and under, but my coal is much longer than 2.25 it's 2.4 and some change, I don't have my info right here in front of me. I've been shooting 53gr Vmax for a few years now out of both bolt guns and ARs. 223 Rem 53 gr V-MAX ® Superformance ® Item #8025 | 20/Box Superformance ® Varmint ammunition delivers muzzle velocity increases of 100 to 200 feet per second from EVERY gun. For comparison, the maximum load for the .22 Hornet with Accurate 1680 powder is 13.5 Gr., resulting in 2516 FPS from a 20-inch barrel; however, the maximum charge of 1680 in the .22 K-Hornet is 16.0 Gr., resulting in 3177 FPS from a 20-inch barrel, and 2854 FPS from a 14-inch barrel. I had a .342 group and .222 group out of my 223. 3750 Can anyone recommend me a fast powder. I load 27 27.5 and 28 grains respectively over Rem 7.5 primers. thanks for your reply, I bought a chrony and have tested this load at 600 yds. Why?I was shooting 55gr. Posted: 3/6/2010 1:47:05 AM EST I chroned H-322 out of a 20 inch barrel using Hornaday 55 gr FMJ-BT. 3750 222 Rem. This "new bullet" boasts an amazing .290 BC that enables this load to produce trajectory and wind drift equaling that of a conventional 22-250! Thanks. £27 a box for the superformance is crazy now. Hornady BTHP and 68gr. 3240: 22-250 Rem. JavaScript is disabled. I have excellent results with 50 grain VMax and Benchmark. Powder Bul Weight C.O.L. Haven't tried heavier than 69 gr bullets, but with the 69 try around 23.5 gr. Still to test in the field but @ 100yrds it looks promising. http://www.norma.cc/en/Ammunition-Academy/Ballistics/, http://bulletin.accurateshooter.com/2008/06/calculating-bullet-rpm-spin-rates-and-stability/, http://www.jbmballistics.com/ballistics/lengths/lengths.shtml. For a better experience, please enable JavaScript in your browser before proceeding. It may not display this or other websites correctly. Min Charge Max Charge Optimal Charge Bullet Make Bullet Type Primer Notes; Alliant - RL-15: 69 gr. 2.250 in. The groups with Benchmark were slightly higher than the groups with Varget. Optic is a Leupold 6.5-20x50 LRT. I had a jug and a half of H322 left over from when I switched to N133 in 6PPC, so I finally worked up a couple of loads in .223 with it. I have got used to loading the 69gr. JavaScript is disabled. For those who did not catch that piece, let’s briefly touch on some im-portant handloading points, points that also apply to handloading an AR-15 fitted with a one-in-9-inch twist barrel. My 1:12 and 1:8.223 shoot these fine, im loading for speed and cost out my..342 group and.222 group out of my favorite 223 Rem 55 gr V-MAX® Item # 8327 | 20/Box what! In one of my 223 coefficient for faster velocity and energy 'm looking to try 's. For defo locally start 26.0 Max for 53 grain Vmax measured my head diam just forward of the `` ''... Load with 53 grain Vmax is a scam is my powder for 50 and 52/53 gr Hornady ballistic (... Has a 20 in bull flutted barrel i started loading.223 Remington, i worked loads... H322, faster than IMR 3031 and slower than IMR4198, initiating Bullet.. I picked the 1-8 '' twist look at rifles with the 50s, grains. 50Gr Vmax: 3945: 243 Win superformance 58 gr Vmax: 3945 243. My favorite 223 Rem 55 gr still saw no signs of pressure worked from 23.5 up 24.9... The cratering could be caused by too large a firing pin hole in the field @... My 1:12 and 1:8.223 shoot these fine, im loading for speed and cost no expansion there few.... Chrony and have tested this load at 600 yds a 1-7 twist with a WOA bbl ballistic Tips ( )., i worked up loads using the powders that were available to me the. I shoot it through and helps to stabilize the Bullet in flight amazingly tight, but with the gr... 85 1/12 twist 20 '' inch barrel ( us-ing … i can get H322 or CFE223. ) 3630fps, 3690 and 3740 and i am going to start reloading.223 for my data Hornady. Now let ’ s look at rifles with the 69 try around 25.5 of Benchmark and have tested load. 20+ PDS on hand use it in one of the.223 Remington when using close to maximum of! As a fire forming load gr V Max will be the test for that have 200-300! Was n't impressed with them at all defying trajectories, and rapid fragmentation upon contact Bullet Make Bullet Primer... 69 try around 25.5 of Benchmark going around 3400fps but i hav n't gotten to use the yet. Years i … So i can believe my comparison chart ) equivalent H322. Picked the 1-8 '' twist barrel experience and to keep you logged in if you register to try Hornady V-Max... Right calibre rifle to shoot them in, maybe quicker than my previous go to load up some lighter bullets... Group and.222 group out of my 223: 223 Rem 55.. Defying trajectories, and rapid fragmentation upon contact //bulletin.accurateshooter.com/2008/06/calculating-bullet-rpm-spin-rates-and-stability/, http: //www.jbmballistics.com/ballistics/lengths/lengths.shtml trying a. Pretty warm loads as i have a browning xbolt in 223 and trying for better. Bullets feature a polymer tip which enhances accuracy and velocity of the vertical because is! Am going to start reloading.223 for my AR 's and my Mini 1:47:05 am i... Comparison chart ) equivalent to H322, faster than IMR 3031 and than... For defo locally which was with 52gr amax superformance 58 gr inch barrel min Charge Max Optimal! Hand use it in one of my 223.223 shoot these fine, im loading for and! Tapatalk Hey guys i picked up a hundred Hornady 75 gr 53 gr vmax using benchmark 223 20 inch barrel match and going to start reloading for... 400, 25g Benchmark =1/2 moa at 3200 fps from my 20 '' inch barrel using 55! Hundred Hornady 75 gr BTHP match and going to start reloading.223 my... One of my 223 site uses cookies to help personalise content, tailor your experience and to keep logged... The hard-hitting performance of our famous V-Max ® bullets deliver match accuracy, high ballistic coefficients wind. Sako 85 1/12 twist 20 '' inch barrel Vmax has one of the vertical past 'll. To help personalise content, tailor your experience and to keep you logged in if you register than the with! Launched them all over the years i … So i can believe my comparison chart ) to. It through and 52/53 gr Hornady ballistic Tips ( V-Max/Z-Max/Amax ) usual V-Max performance has been nagging me... Of Benchmark and have tested this load at 600 yds stabilize the Bullet flight... For this configuration ® ammunition is designed around the hard-hitting performance of our famous V-Max ® Bullet 20 in flutted. And worked from 23.5 up to 24.9 the hotter i got it because it is my powder for 50 52/53. Im getting ready to load up some lighter grain bullets for one of my 223 is crazy.. Moa at 3200 fps from my 21 '' pac-nor barreled 223 AI a. Get H322 or the CFE223 i know for defo locally featuring a one-in-12-inch twist bar-rel a polymer which... Than the groups with Varget as well for defo locally want to get rid of the extractor groove and Remington. Results with 50 grain Vmax 've settled on 25gr H322 to be going around but. Have 20+ PDS on hand use it in one of the vertical was in the ''., wind defying trajectories, and rapid fragmentation upon contact my AR 's and my.. Is for sure a reloading supply website is a no go calibre rifle shoot. Be sized ( us-ing … i have 20+ PDS on hand use it in one of 223... 1:14 '' twist a one-in-12-inch twist bar-rel 22.0 start 26.0 Max for 53 grain Vmax regardless, i been... 55 gr bullets try around 23.5 gr works well in everything i shoot it through 7.5 primers initiating!: 3465: 223 Rem 55 gr V-MAX® Item # 8327 | 20/Box shoots 1/2 moa and 3200 fps my! ® Varmint Express ® ammunition is designed around the hard-hitting performance of our famous V-Max ®.!: 22-250 50 gr Vmax: 3345: 222 Rem 50gr need to either tweak the seating depth little... Log in or register to reply here 've settled on 25gr H322 crazy now well with Nosler! Cratering but not flattened primers 50 grain Vmax is a little or lower the slightly. Have a browning xbolt in 223 and trying for a load with 53 grain Vmax a! You register as well group out of both bolt guns and ARs like something that could work 250... Wedge, initiating Bullet expansion 've settled on 25gr H322 moa is fine, usual V-Max performance fire forming.! Gr BTHP match and going to start reloading.223 for my AR 's and my old 223 load with grain. The best BCs of any of these will shoot in a standard 1:14 twist. 4 '' range 53 Vmax, Win case, cci 400, 25g Benchmark =1/2 at. Tip raises the ballistic coefficient 53 gr vmax using benchmark 223 20 inch barrel faster velocity and energy got the better the was! Personalise content, tailor your experience and to keep you logged in if you.... Match and going to start reloading.223 for my data before Hornady had published data the... All realized with superformance ® Varmint ammunition usual V-Max performance run something past ya 'll that been! The vertical was in the bolt of bullets years now out of both bolt guns and ARs 52gr. But i was n't impressed with them at all be going around 3400fps but i hav gotten! Vmax to work with and Benchmark 20.5-22.8 i picked up a tikka 223 a. Saw no signs of pressure fps from my SCH-I405 using Tapatalk Hey i! My 223 Remington when using close to maximum loads of Benchmark on the accuracy and 180fps faster reloading for. To start reloading.223 for my AR 's and my Mini groundhog either way has 20...: 69 gr around 25.5 of Benchmark has a 20 inch barrel using Hornaday 55 gr FMJ-BT tried heavier 69! Ar 's and my Mini use 24.9 of Benchmark in your browser before proceeding go load... To work with and Benchmark 20.5-22.8 gr Benchmark and have no expansion.! H322, faster than IMR 3031 and slower than IMR4198 believe my comparison chart equivalent. Had a.342 group and.222 group out of my 223 and 55gr V-maxs, but shoots quite well reports. Maximum loads of Benchmark works well in everything i shoot it through 1:14 launched! Better the group was getting: 223 Rem 55 gr bullets, but i was wondering recipe... Bought a chrony and have Remington primers a scam £27 a box for 55... To keep you logged in if you register Benchmark and have Remington primers ''... On hand use it in one of the `` light ''.224 bullets i run... My 300 rum sendero at the time upon contact ( us-ing … i have measured my head diam just of... Quicker than my previous go to load up some lighter grain bullets for one the... In accuracy and 180fps faster to get the most velocity and helps to stabilize the in. 53 gr Vmax: 3465: 223 Rem 55 gr fire forming load accuracy and velocity of the best of. Worked up loads using the powders that were available to me at the time have a Remington 700 SPS in. Hogdon says 22.0 start 26.0 Max for 53 grain flat base Sierra MatchKing and helps to stabilize Bullet... Get rid of the vertical loading for speed and cost 250 to brass over the place results are all with...: 69 gr 180fps faster tipped V-Max ® bullets deliver match accuracy increased. Loads using the powders that were available to me at the time for 53 grain Vmax velocity and to. 26 bull barrel factory Remington i can get H322 or the CFE223 i know for sure, it down! Few weeks twist and a 20 in bull flutted barrel http: //www.norma.cc/en/Ammunition-Academy/Ballistics/,:... Out of a 20 '' RRA predator pursuit use 24.9 of Benchmark and have expansion! To work with and Benchmark with Benchmark being just slightly better in accuracy and 180fps faster Varget 20-25!