Twist Rates by Cartridge/Manufacturer
(if you know of others, please forward
them to me)
| Cartridge | Twist Rate | Manufacturer |
| 10mm Auto | 1 in 15 3/4" | Glock |
| 10mm Auto | 1 in 16" | Colt, IAI/AMT, Smith & Wesson, Springfield Armory |
| 10mm Auto | 1 in 16" | Thompson/Center |
| 10mm Auto | 1 in 16" | Thompson/Center Carbine |
| 17 Ackley Hornet | 1 in 10" | Cooper |
| 17 CCM | 1 in 10" | Cooper |
| 17 Mach IV | 1 in 10" | Thompson/Center |
| 17 Mach IV | 1 in 10" | Cooper |
| 17 Remington | 1 in 10" | Thompson/Center |
| 17 Remington | 1 in 9" | Remington 700, 7 |
| 17 Remington | 1 in 10" | Cooper, Sako, Thompson/Center Rifle and Carbine |
| 218 Bee | 1 in 12" | Thompson/Center |
| 218 Bee | 1 in 12" | Thompson/Center Carbine |
| 218 Bee | 1 in 14" | Cooper |
| 219 Zipper | 1 in 14" | Marlin 336 |
| 22 CCM | 1 in 14" | Cooper |
| 22 Hornet | 1 in 10" | MOA |
| 22 Hornet | 1 in 12" | Thompson/Center, current |
| 22 Hornet | 1 in 14" | Thompson/Center |
| 22 Hornet | 1 in 12" | Thompson/Center Rifle and Carbine, NEA Handi-Rifle |
| 22 Hornet | 1 in 14" | Kimber 82, Savage 24 - V + F, 219, 340,Cooper, Ruger M-77 |
| 22 Hornet | 1 in 16" | Winchester 70, Ruger 3, Browning A-Bolt II,1885, Kimber, Anschutz 1432 |
| 22 K Hornet | 1 in 12" | Thompson/Center, current |
| 22 K Hornet | 1 in 14" | Thompson/Center |
| 22 K Hornet | 1 in 12" | Thompson/Center Rifle and Carbine |
| 22 K Hornet | 1 in 14" | Cooper |
| 22 PPC | 1 in 10" | MOA |
| 22 PPC | 1 in 12" | Thompson/Center Rifle |
| 22 PPC | 1 in 14" | Sako Benchrest-Varmint/PPC, Cooper |
| 22 Remington Jet | 1 in 15" | Smith & Wesson |
| 22 Remington Jet | 1 in 12" | Thompson/Center, current |
| 22 Remington Jet | 1 in 14" | Thompson/Center |
| 22-250 Remington | 1 in 10" | MOA |
| 22-250 Remington | 1 in 12" | Sako, Savage 110, 112, Thompson/Center Rifle |
| 22-250 Remington | 1 in 14" | Browning, Remington 700,788, 40-XB, Savage 99, 110, 112-V, H&R, Husqvarna, Ruger, Winchester 70, 770, Mossberg, Weatherby, Sako current models |
| 220 Swift | 1 in 12" | Savage 112, Thompson/Center Rifle |
| 220 Swift | 1 in 14" | Winchester 70, Remington 700, Ruger 77, FN, Savage 112-V |
| 220 Weatherby Rocket | 1 in 14" | Weatherby |
| 221 Fireball | 1 in 12" | Thompson/Center, current, Remington |
| 221 Fireball | 1 in 14" | Thompson Center |
| 221 Fireball | 1 in 12" | Thompson/Center Carbine |
| 221 Fireball | 1 in 14" | Cooper, Remington 700 Classic |
| 222 Rem Magnum | 1 in 12" | Sako |
| 222 Rem Magnum | 1 in 14" | Browning, Remington 722, 700, 40-XB,Husqvarna, Sako |
| 222 Rem Magnum | 1 in 15 | Sako/1972 |
| 222 Rem Magnum | 1 in 12" | Thompson/Center |
| 222 Remington | 1 in 12" | Thompson/Center, current |
| 222 Remington | 1 in 14" | Thompson/Center |
| 222 Remington | 1 in 12" | Thompson/Center Carbine and Rifle |
| 222 Remington | 1 in 14" | Browning, Remington 722, 725, 700, 600, 40XB, 760, 788, 660, Savage 24-V, 340, 112,2400, Sako, Winchester 70, 770, Wichita, Colt,Husqvarna, Cooper |
| 222 Remington | 1 in 16" | JC Higgins 52, early Sako |
| 223 Remington | 1 in 10" | MOA |
| 223 Remington | 1 in 12" | Thompson/Center, Remington |
| 223 Remington | 1 in 7" | Colt, Ruger Mini-14, Eagle Arms Eagle Eye,H&K SL8 |
| 223 Remington | 1 in 8" | Eagle Arms Golden Eagle, Armalite |
| 223 Remington | 1 in 9" | 70 HBV, Savage 110, 112, 116, Steyr Aug-SA, Eagle Arms standard models, Savage,Winchester 70 |
| 223 Remington | 1 in 10" | Ruger Mini-14 & #1 |
| 223 Remington | 1 in 12" | Colt Bolt Action, AR-15, Remington 760, 700, 788, 7, H&R, Sako, Savage 340, Winchester 70, Thompson/Center Contender, Encore and Rifle, Ruger # 1, 77, NEA Handi-Rifle, Howa, CZ |
| 223 Remington | 1 in 14" | Remington 40-XB, Husqvarna, Savage 24-F+V,340, Wichita,Weatherby Vanguard, Cooper |
| 224 Weatherby Magnum | 1 in 14" | Weatherby |
| 225 Winchester | 1 in 14" | Winchester 70, 670, Savage 340, 24-F |
| 240 Weatherby | 1 in 9 1/2" | Weatherby Mark V |
| 243 Winchester | 1 in 9" | MOA |
| 243 Winchester | 1 in 9" | Remington 660, 700, 788 (1969), |
| 243 Winchester | 1 in 9 1/8" | Remington 700, 7400, 7600, 7, |
| 243 Winchester | 1 in 9 1/4" | Savage (present) |
| 243 Winchester | 1 in 10" | Browning, Colt, FN, Harrington and Richardson models 300, 308, 360, Husqvarna, Mannlicher-Schoenauer, Musketeer, Mossberg 800, Remington 700, 40-XB, Savage 99, 110, 111, 112-V, 116 (old), Sako Bolt and Lever Actions, Schultz and Larsen, Stevens 110, Winchester 70, 88,100,670,770, JC Higgins 51-L, Ruger 1, 77, Wichita, Weatherby Vanguard, Thompson/Center Rifle |
| 243 Winchester | 1 in 12" | Steyr SSG-PII |
| 244 Remington | 1 in 10" | Remington 700 |
| 244 Remington | 1 in 12" | Remington 722, 760, 740, 725, 40-XB, Sako |
| 25 Auto (ACP) | 1 in 10" | Beretta |
| 25 Auto (ACP) | 1 in 16" | Colt, Bauer, Sterling |
| 25 TCU (25 Ugalde) | 1 in 10" | Thompson/Center Carbine and Rifle |
| 25-06 Remington | 1 in 10" | Remington 700, 40-XB, Ruger 1, 77, Browning, Sako, Winchester 70, Savage 110, 112, Thompson/Center Rifle |
| 25/20 Winchester | 1 in 10" | Thompson/Center |
| 25/35 Winchester | 1 in 9" | Thompson/Center |
| 25/35 Winchester | 1 in 10" | Thompson/Center, current |
| 25/35 Winchester | 1 in 10" | Thompson/Center Carbine, Winchester Model 94 |
| 250 Savage | 1 in 10" | MOA |
| 250 Savage | 1 in 9 1/2" | Weatherby |
| 250 Savage | 1 in 10" | Savage 99, 110, Remington 700, Ruger 77 |
| 256 Winchester | 1 in 14" | Ruger |
| 256 Winchester | 1 in 8" | Merrill |
| 256 Winchester | 1 in 10" | Thompson/Center, current |
| 256 Winchester | 1 in 14" | Thompson/Center |
| 256 Winchester | 1 in 10" | Thompson/Center Carbine |
| 256 Winchester | 1 in 14" | Marlin 62 |
| 257 Roberts | 1 in 9 1/2" | Browning A-Bolt II |
| 257 Roberts | 1 in 10" | Remington 722, 760, 700, Winchester 70, Ruger 77, Thompson/Center Rifle |
| 257 TCU (25 Ugalde) | 1 in 10" | Thompson/Center |
| 257 Weatherby Mag | 1 in 9 1/2" | Weatherby (current) |
| 257 Weatherby Mag | 1 in 12" | Weatherby (old) |
| 257 Weatherby Mag | 1 in 14" | Mannlicher-Schoenauer |
| 260 Remington | 1 in 8" | Ruger 77 |
| 260 Remington | 1 in 9" | Remington 700, Savage |
| 260 Remington | 1 in 10" | Browning |
| 264 Winchester Magnum | 1 in 8" | Thompson/Center Rifle |
| 264 Winchester Magnum | 1 in 9" | Browning, FN, Husqvarna, Musketeer, Remington 700, Savage 110, Sako, Schultz & Larsen, Winchester 70, 670, 770 |
| 264 Winchester Magnum | 1 in 10" | Colt, Mannlicher-Schoenauer |
| 270 Maximum | 1 in 10" | MOA |
| 270 REN | 1 in 8" | RPM |
| 270 REN | 1 in 10" | Thompson/Center |
| 270 REN | 1 in 10" | Thompson/Center Carbine |
| 270 Weatherby Magnum | 1 in 9 1/2" | Weatherby Mark V |
| 270 Weatherby Magnum | 1 in 10" | Weatherby Vanguard, Browning BAR Mark II, Winchester |
| 270 Weatherby Magnum | 1 in 12" | Weatherby (old) |
| 270 Winchester | 1 in 10" | MOA |
| 270 Winchester | 1 in 9" | Mannlicher-Schoenauer |
| 270 Winchester | 1 in 9 1/2" | Husqvarna |
| 270 Winchester | 1 in 10" | Higgins 50, 51, 51-L,Husqvarna, Musketeer, Remington 700, 721,760, 725, 7400, 7600, 4, 6, Savage 110, 114,116, Sako, Schultz & Larsen, Winchester 70,670, 770, Ruger 1, 77, Mossberg, Marlin 455,Wichita,Weatherby Mark V, Vanguard, Magnum Research Mountain Eagle, (Sako-Krieger-Bell and Carson), Thompson/Center Rifle |
| 270 WSM | 1 in 10" | Winchester 70, Browning |
| 280 Remington | 1 in 9" | Magnum Research Mountain Eagle, Thompson/Center Rifle |
| 280 Remington | 1 in 9 1/4" | Remington 760, 740, 742, 700, 721, 725, 7400, 7600 |
| 280 Remington | 1 in 9 1/2" | Ruger 77 (old), Savage 110, Ruger (present) |
| 280 Remington | 1 in 10" | Winchester 70, Browning A-Bolt II, Sako |
| 284 Winchester | 1 in 8 3/4" | Ruger 77 |
| 284 Winchester | 1 in 10" | Browning A-Bolt, 81 BLR, Savage 99,Winchester 88, 100 |
| 30 BR | 1 in 10" | MOA |
| 30 Carbine | 1 in 10" | IAI /AMT |
| 30 Carbine | 1 in 20" | Ruger |
| 30 Carbine | 1 in 10" | MOA, Thompson/Center, current |
| 30 Carbine | 1 in 12" | Thompson/Center |
| 30 Carbine | 1 in 20" | Thompson/Center |
| 30 Herrett | 1 in 10" | RPM, Merrill, MOA, Thompson/Center, current |
| 30 Herrett | 1 in 14" | Thompson/Center |
| 30 Herrett | 1 in 10" | Thompson/Center Carbine |
| 30 M1 Carbine | 1 in 10" | Thompson/Center Carbine |
| 30 M1 Carbine | 1 in 16" | Carbine, Universal |
| 30 M1 Carbine | 1 in 20" | Marlin 62, Ruger |
| 30 Merrill | 1 in 10" | Merrill |
| 30 Remington | 1 in 12" | Remington 81, 141 |
| 30 x 20 | 1 in 10" | MOA |
| 30 x 39 | 1 in 10" | MOA |
| 30-06 | 1 in 10" | Higgins 50, 51, 51-L, Harrington & Richardson 300, Mannlicher Schoenauer, Marlin, Musketeer, Remington 721, 760, 740, 742, 725, 700, 40-XB, 7400, 7600, Savage 110, 114, 116 (present), Sako, Schultz & Larsen, Stevens 110, Winchester 70, 670, 770,Weatherby Vanguard, Mark V, Ruger 1, 77: Wichita, Mossberg, Magnum Research Mountain Eagle, Thompson/Center Rifle |
| 30-06 | 1 in 12" | Husqvarna, Remington 700 Varmint (old), Browning 78 |
| 30/30 Winchester | 1 in 10" | Thompson/Center, Wichita, RPM, Merrill, MOA |
| 30/30 Winchester | 1 in 10" | Marlin 336, Remington 788, Thompson/Center Carbine |
| 30/30 Winchester | 1 in 12" | Savage 24, 170, 340, 219, Winchester 64, 94,66, Mossberg 479, 679 |
| 30-338 | 1 in 10" | Remington 40-XB |
| 30-378 Weatherby | 1 in 10" | Weatherby Mark V |
| 30-40 Krag | 1 in 10" | Ruger 3, Winchester 95 |
| 300 Dakota | 1 in 10" | Dakota Arms |
| 300 H & H Magnum | 1 in 10" | Browning, Remington 721, Sako, Winchester 70 |
| 300 RUM | 1 in 10" | Remington 700, Savage |
| 300 SAUM | 1 in 10" | Remington Model Seven |
| 300 Savage | 1 in 10" | Remington 81, 722, 760, Savage 110 |
| 300 Savage | 1 in 12" | Savage 99 |
| 300 Weatherby Magnum | 1 in 9 1/2" | Weatherby Mark V (current) |
| 300 Weatherby Magnum | 1 in 10" | Weatherby Vanguard (current), Sako,Winchester 70, Remington 700 |
| 300 Weatherby Magnum | 1 in 12" | Weatherby (old), Remington 700 (current) |
| 300 Whisper | 1 in 10" | Thompson/Center |
| 300 Winchester Magnum | 1 in 10" | Browning BAR Mark II, A-Bolt II, FN, Harrington & Richardson 300, Musketeer, Remington 700, 40-XB, Savage 110, 112, 114, 116, Sako, Winchester 70, 670, 770, Ruger 1,77, Magnum Research Mountain Eagle, Wichita,Weatherby Mark V, Vanguard (new), Thompson/Center Rifle |
| 300 Winchester Magnum | 1 in 12" | Husqvarna |
| 300 WSM | 1 in 10" | Winchester 70, Browning, Savage |
| 307 Winchester | 1 in 12" | Winchester 94 |
| 308 Norma Magnum | 1 in 10" | Musketeer, Schultz & Larsen |
| 308 Norma Magnum | 1 in 12" | Browning, Husqvarna |
| 308 Winchester | 1 in 10" | Pachmayr, Wichita, MOA |
| 308 Winchester | 1 in 10" | Savage 99, 110, 112, 116 (present), Weatherby Vanguard, Steyr SSG-PIV, Thompson/Center Rifle |
| 308 Winchester | 1 in 12" | , Springfield Armory M1A |
| 32 Auto | 1 in 16" | Walther, Mauser |
| 32 Auto | 1 in 18 3/4" | Mauser |
| 32 Colt New Police | 1 in 14" | Colt |
| 32 H&R Magnum | 1 in 16" | Ruger |
| 32 H&R Magnum | 1 in 18 3/4" | Dan Wesson, Smith & Wesson |
| 32 H&R Magnum | 1 in 10" | Thompson/Center, RPM |
| 32 H&R Magnum | 1 in 14" | Wichita |
| 32 H&R Magnum | 1 in 10" | Thompson/Center Carbine |
| 32 Remington | 1 in 14" | Remington 81, 141 |
| 32 S&W Long | 1 in 17" | Charter Arms |
| 32 S&W Long | 1 in 18 3/4" | Smith & Wesson |
| 32 Winchester Special | 1 in 16" | Marlin 336, Winchester 64, 94 |
| 32-20 Winchester | 1 in 10" | Thompson/Center, RPM, BF |
| 32-20 Winchester | 1 in 10" | Thompson/Center Carbine |
| 32-40 Winchester | 1 in 16" | Thompson/Center Rifle |
| 330 Dakota | 1 in 10" | Dakota Arms |
| 338 Lapua Magnum | 1 x 10" | Sako TRGS |
| 338 Lapua Magnum | 1 x 12" | Sako TRG42 |
| 338 RUM | 1 in 10" | Remington 700 |
| 338 Winchester Magnum | 1 in 10" | Weatherby Mark V, Mannlicher-Schoenauer, Savage 110, 116, Winchester 70, Ruger 77, Sako (current), Mossberg, Remington 700, Weatherby, Vanguard, Browning A-Bolt II, Magnum, Research Mountain Eagle, Thompson/Center, Rifle |
| 338 Winchester Magnum | 1 in 12" | Browning BAR Mark II, Sako (old) |
| 338-06 ASquare | 1 in 10" | Weatherby Mark V |
| 338-378 Weatherby | 1 x 10" | Weatherby Mark V |
| 340 Weatherby Magnum | 1 in 10" | Weatherby Mark V |
| 348 Winchester | 1 in 12" | Winchester 71 |
| 35 Herrett | 1 in 14" | Thompson/Center Carbine |
| 35 Remington | 1 in 14" | Thompson/Center, current |
| 35 Remington | 1 in 16" | Thompson/Center |
| 35 Remington | 1 in 12" | Savage 170 |
| 35 Remington | 1 in 14" | Thompson/Center Carbine |
| 35 Remington | 1 in 16" | Marlin 336, Remington 81, 141, 600, 760 |
| 35 Whelen | 1 in 14" | Thompson/Center Rifle |
| 35 Whelen | 1 in 16" | Remington 700, 7400, 7600, Ruger |
| 350 Remington Magnum | 1 in 16" | Remington 600, 660, 700, Ruger 77 |
| 356 Winchester | 1 in 12" | Winchester 94 |
| 357 Herrett | 1 in 14" | Thompson/Center, current, RPM, Merrill |
| 357 Herrett | 1 in 16" | Thompson/Center |
| 357 Magnum | 1 in 14" | Colt, Dan Wesson ( 10”,12”, 15” barrels only),Magnum Research Desert Eagle, Freedom Arms |
| 357 Magnum | 1 in 16" | Ruger SA’s |
| 357 Magnum | 1 in 17" | Charter Arms |
| 357 Magnum | 1 in 18 3/4" | Smith & Wesson, Dan Wesson, Ruger DA’s,Taurus, High Standard |
| 357 Magnum | 1 in 12" | MOA |
| 357 Magnum | 1 in 14" | Thompson/Center, RPM, Merrill |
| 357 Magnum | 1 in 16" | Thompson/Center, Navy Arms RB |
| 357 Magnum | 1 in 18" | Thompson/Contender, Mossberg Abilene |
| 357 Magnum | 1 in 14" | Thompson/Center Carbine |
| 357 Magnum | 1 in 16" | Marlin 1894, Navy Arms RB |
| 357 Maximum | 1 in 16" | Ruger |
| 357 Maximum | 1 in 18 3/4" | Dan Wesson |
| 357 Maximum | 1 in 12" | MOA |
| 357 Maximum | 1 in 14" | Thompson/Center, RPM |
| 357 Maximum | 1 in 16" | Wichita |
| 357 Maximum | 1 in 14" | Thompson/Center Carbine |
| 357/44 Bain & Davis | 1 in 14" | Merrill, Thompson/Center |
| 358 Norma Magnum | 1 in 12" | Husqvarna, Schultz & Larsen |
| 358 Winchester | 1 in 12" | MOA |
| 358 Winchester | 1 in 10" | Mannlicher-Schoenauer |
| 358 Winchester | 1 in 12" | Savage 99, Schultz & Larsen, Winchester 70,88,100 |
| 358 Winchester | 1 in 16" | Ruger |
| 375 Dakota | 1 in 12" | Dakota Arms |
| 375 H&H Magnum | 1 in 12" | Remington 700, Winchester 70, Ruger, Sako, Browning A-Bolt II,Weatherby Mark V, Remington 700 Custom, Thompson/Center Rifle, Savage |
| 375 H&H Magnum | 1 in 14" | Browning (old) |
| 375 RUM | 1 in 12" | Remington 700 |
| 375 Super Mag | 1 in 18 3/4" | Dan Wesson |
| 375 Weatherby Magnum | 1 in 12" | Weatherby |
| 375 Winchester | 1 in 12" | Merrill, Thompson/Center |
| 375 Winchester | 1 in 12" | Winchester 94, Marlin 375, Savage 99, Ruger, Thompson/Center Carbine and Rifle |
| 378 Weatherby Magnum | 1 in 12" | Weatherby Mark V |
| 38 S&W | 1 in 18 3/4" | Smith & Wesson |
| 38 Special | 1 in 14" | Colt |
| 38 Special | 1 in 16" | Ruger SA’s |
| 38 Special | 1 in 17" | Charter Arms |
| 38 Special | 1 in 18 3/4" | Smith & Wesson, Dan Wesson, Ruger DA’s, Taurus |
| 38 Special | 1 in 14" | Merrill, Thompson/Center |
| 38 Super | 1 in 9.84" | Sig-Sauer |
| 38 Super | 1 in 14" | Springfield Armory |
| 38 Super | 1 in 16" | Colt |
| 38-40 Winchester | 1 in 16" | Colt SAA |
| 38-40 Winchester | 1 in 16" | Thompson/Center |
| 38-55 Winchester | 1 in 12" | Thompson/Center |
| 38-55 Winchester | 1 in 12" | Thompson/Center Carbine and Rifle |
| 38-55 Winchester | 1 in 18" | Ruger, Marlin 336 Cowboy |
| 380 Auto (ACP) | 1 in 9.84" | Sig-Sauer, Taurus |
| 380 Auto (ACP) | 1 in 16" | Colt, AMT,Walther |
| 40 Smith & Wesson | 1 in 15 3/4" | Glock |
| 40 Smith & Wesson | 1 in 10" | Ruger |
| 40 Smith & Wesson | 1 in 16" | Colt, Magnum Research Baby Eagle,Smith & Wesson |
| 40 Smith & Wesson | 1 in 16" | Thompson/Center |
| 40 Smith & Wesson | 1 in 16" | Thompson/Center Carbine |
| 404 Dakota | 1 in 14" | Dakota Arms |
| 41 Action Express | 1 in 13 3/4" | Taurus |
| 41 Action Express | 1 in 18" | Magnum Research Baby Eagle |
| 41 Action Express | 1 in 16" | Bar-Sto |
| 41 Magnum | 1 in 18" | Magnum Research Desert Eagle |
| 41 Magnum | 1 in 18 3/4" | Smith & Wesson, Dan Wesson |
| 41 Magnum | 1 in 20" | Ruger |
| 41 Magnum | 1 in 14" | RPM |
| 41 Magnum | 1 in 18 3/4" | Merrill |
| 41 Magnum | 1 in 20" | Thompson/Center |
| 41 Magnum | 1 in 18 1/2" | Marlin 1894 |
| 416 Dakota | 1 in 14" | Dakota Arms |
| 416 Remington Magnum | 1 in 16 1/2" | Ruger |
| 416 Remington Magnum | 1 in 14" | Remington 700, Winchester 70, Sako,Thompson/Center Rifle |
| 425 Express | 1 in 10" | Savage 116 SE |
| 44 Auto Magnum | 1 in 18" | Auto Mag |
| 44 Magnum | 1 in 18" | Magnum Research Desert Eagle |
| 44 Magnum | 1 in 18 3/4" | Dan Wesson |
| 44 Magnum | 1 in 20" | Colt, Smith & Wesson, Dan Wesson, Ruger,Freedom Arms |
| 44 Magnum | 1 in 14" | MOA |
| 44 Magnum | 1 in 18" | RPM, Merrill |
| 44 Magnum | 1 in 20" | Thompson/Center, current, Mossberg Abilene, Freedom Arms |
| 44 Magnum | 1 in 22" | Thompson/Center |
| 44 Magnum | 1 in 20" | Thompson/Center Carbine |
| 44 Magnum | 1 in 38" | Ruger Carbine, Marlin 336, 1894,Remington788, Winchester 94, Browning 92 |
| 44 Special | 1 in 16" | Colt |
| 44 Special | 1 in 18" | Charter Arms |
| 44 Special | 1 in 20" | Colt SAA, Smith & Wesson |
| 44/40 Winchester | 1 in 20" | Colt SAA |
| 444 Marlin | 1 in 38" | Marlin 336, 444S |
| 445 Super Magnum | 1 in 18 3/4" | Dan Wesson |
| 445 Super Magnum | 1 in 20" | Thompson/Center |
| 45 Auto (ACP) | 1 in 16" | Marlin 45, Thompson/Center, Wichita |
| 45 Auto (ACP) | 1 in 15 3/4" | Glock |
| 45 Auto (ACP) | 1 in 15" | Smith & Wesson, Sig-Sauer |
| 45 Auto (ACP) | 1 in 16" | Colt, Springfield Armory |
| 45 Auto (ACP) | 1 in 18" | Springfield Armory (Omega only) |
| 45 Auto (ACP) | 1 in 24" | Freedom Arms |
| 45 Auto Rim | 1 in 15" | Smith & Wesson |
| 45 Long Colt | 1 in 16" | Colt SAA and Anaconda, Ruger,Smith & Wesson |
| 45 Long Colt | 1 in 20" | Smith & Wesson |
| 45 Long Colt | 1 in 24" | Ruger, Freedom Arms |
| 45 Long Colt | 1 in 16" | Thompson/Center, current, Mossberg Abilene |
| 45 Long Colt | 1 in 24" | Thompson/Center, Freedom Arms |
| 45 Long Colt | 1 in 16" | Thompson/Center Carbine |
| 45 Long Colt | 1 in 38" | Winchester 94 |
| 45 Winchester Mag | 1 in 16" | Thompson/Center Carbine |
| 45 Winchester Magnum | 1 in 10" | Wildey |
| 45 Winchester Magnum | 1 in 24" | Freedom Arms |
| 45 Winchester Magnum | 1 in 16" | Thompson/Center |
| 45/70 Government | 1 in 14" | Thompson/Center Carbine |
| 45/70 Government | 1 in 20" | Ruger 1, 3, Marlin 1895S, Browning B-7, 1885,Thompson/Center Rifle |
| 45/70 Government | 1 in 22" | Navy Arms |
| 45/70 Government | 1 in 14" | Thompson/Center Contender |
| 450 Dakota | 1 in 14" | Dakota Arms |
| 450 Marlin | 1 in 20" | Marlin 1895M |
| 454 Casull | 1 in 24" | Freedom Arms, Ruger, Taurus |
| 454 Casull | 1 in 14" | MOA |
| 454 Casull | 1 in 24" | Freedom Arms |
| 458 Winchester Magnum | 1 in 16 1/2" | Browning, Savage 116SE |
| 458 Winchester Magnum | 1 in 14" | Remington 700, Winchester 70, Ruger 1, Savage |
| 458 Winchester Magnum | 1 in 15" | Mannlicher-Schoenauer |
| 458 Winchester Magnum | 1 in 18" | Sako |
| 460 Weatherby Magnum | 1 in 16" | Weatherby Mark V |
| 475 Linebaugh | 1 in 18" | Freedom Arms, Linebaughs |
| 480 Ruger | 1 in 18" | Ruger |
| 50 AE | 1 in 19" | Magnum Research Desert Eagle |
| 50 AE | 1 in 20" | Freedom Arms |
| 50 AE | 1 in 19" | Desert Eagle |
| 50 AE | 1 in 20" | Freedom Arms |
| 6mm PPC | 1 in 9" | MOA |
| 6mm PPC | 1 in 10" | Thompson/Center Rifle |
| 6mm PPC | 1 in 14" | Sako, Ruger VT |
| 6mm TCU | 1 in 10" | Thompson/Center Carbine and Rifle |
| 6 x 45 | 1 in 12" | Cooper |
| 6 x 47 | 1 in 12" | Cooper |
| 6 x 47mm | 1 in 12" | Remington 40-XB |
| 6 x 47mm | 1 in 14" | Remington 40-XBBR |
| 6.5 TCU | 1 in 8" | Thompson /Center |
| 6.5 x 39 | 1 in 8" | MOA |
| 6.5-35M | 1 in 8" | MOA |
| 6.5 M Schoenauer | 1 in 8 1/4" | Mannlicher-Schoenauer |
| 6.5 Remington Magnum | 1 in 9" | Remington 600, 660, 700, Ruger 77 |
| 6.5 TCU | 1 in 8" | Thompson/Center Carbine and Rifle |
| 6.5 x 55mm | 1 in 7 | Winchester 70 |
| 6.5 x 55mm | 1 in 8" | Husqvarna, Remington 700 (1994), Thompson/Center Rifle, Ruger 77 |
| 6.5 x 55mm | 1 in 8 1/4" | Schultz & Larsen |
| 6.5 x 55mm | 1 in 9" | Remington 40-XB |
| 6.5 x 68mm | 1 in 11" | Mannlicher-Schoenauer |
| 6mm BR Remington | 1 in 9" | Remington, MOA |
| 6mm International | 1 in 12" | Remington 40-XB |
| 6mm Remington | 1 in 9" | Remington 600, 700, 742, 760, 660, Browning B-78, Ruger |
| 6mm Remington | 1 in 9" | Remington 700, 4, 6, 7, 7400,7600 |
| 6mm Remington | 1 in 10" | Remington 40-XB, Schultz and Larsen, Ruger 1, 77, Browning |
| 6mm Remington BR | 1 in 14" | Remington 40-XBBR |
| 6mm TCU | 1 in 10" | Thompson/Center |
| 7 PPC | 1 in 10" | Wichita |
| 7 Super Magnum | 1 in 9" | Thompson/Center |
| 7 TCU | 1 in 9" | Thompson/Center Rifle and Carbine |
| 7 x 30 Waters | 1 in 9" | Thompson/Center |
| 7 x 30 Waters | 1 in 9" | Thompson/Center Carbine |
| 7 x 30 Waters | 1 in 9 1/2" | Winchester 94 |
| 7 x 35 | 1 in 9" | MOA |
| 7 x 39 | 1 in 9" | MOA |
| 7 x 57mm | 1 in 8" | Ruger (present) |
| 7 x 57mm | 1 in 8 1/2" | Winchester 70 (post 64) |
| 7 x 57mm | 1 in 8 | FN |
| 7 x 57mm | 1 in 8 3/4" | Winchester 54, 70 (pre ‘64), Ruger 77 |
| 7 x 57mm | 1 in 9" | Mannlicher-Schoenauer, Thompson/Center Rifle |
| 7 x 57mm | 1 in 9 1/4" | Remington 700 |
| 7 x 57mm | 1 in 9 1/2" | Ruger 1, 77 (old), Savage 110 |
| 7 x 57mm | 1 in 10" | Winchester 70 |
| 7 x 61 Sharpe & Hart | 1 in 10" | Schultz & Larsen |
| 7 x 64mm Brenneke | 1 in 9" | Thompson/Center Rifle |
| 7.62 x 39mm | 1 in 10" | Thompson/Center Rifle |
| 7.62 x 39mm | 1 in 12" | Colt, Ruger |
| 7mm BR Remington | 1 in 9" | MOA |
| 7mm BR Remington | 1 in 10" | Remington |
| 7mm Dakota | 1 in 10" | Dakota Arms |
| 7mm Express | 1 in 9 1/4" | Remington 700, 4, 7400. |
| 7mm IHMSA | 1 in 9" | Wichita |
| 7mm Merrill | 1 in 9" | Merrill |
| 7mm Remington Magnum | 1 in 9 1/4" | Remington 700 |
| 7mm Remington Magnum | 1 in 9 1/4" | Savage 110, 111, 112, 114, 116, Sako, Winchester 70, 770, Ruger 1, 77 (old), Mossberg, Browning A-Bolt II, 81 BLR, Weatherby Mark V |
| 7mm Remington Magnum | 1 in 9 1/2" | Ruger (present), Savage (present) |
| 7mm Remington Magnum | 1 in 10" | Browning, FN, Harrington & Richardson 300, Musketeer, Schultz & Larsen, Browning BAR Mark II, Weatherby Vanguard |
| 7mm Remington Magnum | 1 in 9" | Husqvarna, Remington 40-XB, 700 (1969), Magnum Research Mountain Eagle, Thompson/Center Rifle |
| 7mm Rocket | 1 in 9" | Merrill |
| 7mm RUM | 1 in 9 1/4" | Remington 700 |
| 7mm SAUM | 1 in 9 1/4" | Remington Model Seven |
| 7mm STW | 1 in 9" | Remington 700, Winchester 70 |
| 7mm STW | 1 in 9 1/2" | Ruger #1, Savage |
| 7mm TCU | 1 in 9" | Thompson/Center, MOA |
| 7mm TCU | 1 in 10" | Wichita |
| 7mm Weatherby Magnum | 1 in 9 1/4" | Remington 700 |
| 7mm Weatherby Magnum | 1 in 9 1/2" | Weatherby Mark V (present) |
| 7mm Weatherby Magnum | 1 in 10" | Weatherby (1965) |
| 7mm Weatherby Magnum | 1 in 12" | Weatherby (old) |
| 7mm WSM | 1 in 9 1/2" | Winchester 70, Browning |
| 7mm-08 Remington | 1 in 9" | Wichita, MOA |
| 7mm-08 Remington | 1 in 9 1/4" | Remington |
| 7mm-08 Remington | 1 in 9" | Thompson/Center Rifle |
| 7mm-08 Remington | 1 in 9 1/2" | Browning 81, BLR, A-Bolt II, Sako, Savage (present) |
| 7mm-08 Remington | 1 in 10" | Remington 7, 788, 700, Winchester 70, Savage 110 |
| 8 x 68S MS | 1 in 11" | Mannlicher-Schoenauer |
| 8mm Remington Magnum | 1 in 10" | Remington 700 |
| 9mm Luger | 1 in 9.84" | Sig-Sauer, Glock, Taurus |
| 9mm Luger | 1 in 10" | Smith & Wesson (old), Ruger, Beretta, Magnum Research Baby Eagle |
| 9mm Luger | 1 in 16" | Colt, Browning, Springfield Armory |
| 9mm Luger | 1 in 18 3/4" | Colt, Smith & Wesson (new) |
| 9mm Luger | 1 in 14" | Thompson/Center |
| 9mm Luger | 1 in 10" | Colt, Marlin 9, Uzi Carbine |
| 9mm Luger | 1 in 14" | Thompson/Center Carbine |