This information might come in handy when trying to decide a twist rate for any given project. Keep in mind that the factories are trying to find an 'average' that will handle most bullet lengths. The cut-rifle process allows for more choices and we are able to configure the bore geometry to your needs, for your choice of bullets.

 

 

 

 

 

 

 

 


Factory Twist Rates

 

17 CCM - 1 in 10" . . . . . . . . . . .Cooper

17 Remington - 1 in 9" . . . . . . . .Remington 700, 7

17 Remington - 1 in 10" . . . . . . .Cooper; Sako; Thompson/Center Rifle

and Carbine

17 Ackley Hornet - 1 in 10" . . . .Cooper

17 Mach IV - 1 in 10" . . . . . . . . .Cooper

22 CCM - 1 in 14" . . . . . . . . . . .Cooper

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 Rifle and Carbine

22 K-Hornet - 1 in 14" . . . . . . . .Cooper

218 Bee - 1 in 12" . . . . . . . . . . .Thompson/Center Carbine

218 Bee - 1 in 14" . . . . . . . . . . .Cooper

221 Fireball - 1 in 12" . . . . . . . . .Thompson/Center Carbine

221 Fireball - 1 in 14" . . . . . . . . .Cooper; Remington 700 Classic

219 Zipper - 1 in 14" . . . . . . . . .Marlin 336

222 Remington - 1 in 12" . . . . . .Thompson/Center Carbine and Rifle

222 Remington - 1 in 14" . . . . . .Browning; Remington 722, 725, 700, 600, 40

XB, 760, 788, 660; Savage 24-V, 340, 112,

2400; Sako; Winchester 70, 770; Wichita ; Colt;

Husqvarna; Cooper

222 Remington - 1 in 16" . . . . . .J.C. Higgins 52, early Sako

22 PPC - 1 in 12" . . . . . . . . . . . .Thompson/Center Rifle

22 PPC - 1 in 14" . . . . . . . . . . . .Sako Benchrest-Varmint / PPC; Cooper

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 15.5" .Sako/1972

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" . . . . . . .Colt; Win. 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 Mag. - 1 in 14" .Weatherby

225 Winchester - 1 in 14" . . . . . Winchester 70, 670; Savage 340, 24-F.

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

6 TCU - 1 in 10" . . . . . . . . . . . . .Thompson/Center Carbine and Rifle

6 x 45 - 1 in 12" . . . . . . . . . . . . .Cooper

6 PPC - 1 in 10" . . . . . . . . . . . . .Thompson/Center Rifle

6 PPC - 1 in 14" . . . . . . . . . . . . .Sako, Ruger VT

6 x 47 - 1 in 12" . . . . . . . . . . . . .Cooper

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; J.C. 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

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 International - 1 in 12" . . .Remington 40-XB

6 x 47mm - 1 in 12" . . . . . . . . . .Remington 40-XB

6 x 47mm - 1 in 14" . . . . . . . . . .Remington 40-XBBR

6mm Remington BR - 1 in 14" .Remington 40-XBBR

240 Weatherby - 1 in 9 1/2" . . . .Weatherby Mark V

256 Winchester - 1 in 10" . . . . .Thompson/Center Carbine

256 Winchester - 1 in 14" . . . . .Marlin 62

25-35 Winchester - 1 in 10" . . . . .Thompson/Center Carbine, Winchester Model 94

25 TCU (25 Ugalde) - 1 in 10" . .Thompson/Center Carbine and Rifle

250 Savage - 1 in 9 1/2" . . . . . .Weatherby

250 Savage - 1 in 10" . . . . . . . .Savage 99, 110; Remington 700; Ruger 77

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

25/06 Remington - 1 in 10" . . . .Remington 700, 40-XB; Ruger 1, 77; Browning;

Sako; Winchester 70; Savage 110, 112;

Thompson/Center Rifle

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

6.5 TCU - 1 in 8" . . . . . . . . . . . .Thompson/Center Carbine and Rifle

6.5 M-Schoenauer - 1 in 8 1/4" Mannlicher-Schoenauer

260 Remington – 1 in 8" . . . . . .Ruger 77

260 Remington - 1 in 9" . . . . . . .Remington 700, Savage

260 Remington – 1 in 10" . . . . .Browning

6.5 x 55mm - 1 in 7.87" . . . . . . . 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 Remington Magnum - 1 in 9" Remington 600, 660, 700; Ruger 77

6.5 x 68mm - 1 in 11" . . . . . . . . .Mannlicher-Schoenauer

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 REN - 1 in 10" . . . . . . . . . . .Thompson/Center Carbine

270 Winchester - 1 in 9" . . . . . . .Mannlicher-Schoenauer

270 Winchester - 1 in 9 1/2" . . .Husqvarna

270 Winchester - 1 in 10" . . . . .Browning; FN; Harrington & Richardson 300;

High-Standard; J.C. 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

270 Weatherby Mag. - 1 in 9 1/2" .Weatherby Mark V

270 Weatherby Mag. - 1 in 10" .Weatherby Vanguard; Browning BAR Mark II;

Winchester

270 Weatherby Mag. - 1 in 12" .Weatherby (old)

7 TCU - 1 in 9" . . . . . . . . . . . . . .Thompson/Center Rifle and Carbine

7 x 30 Waters - 1 in 9" . . . . . . . .Thompson/Center Carbine

7 x 30 Waters - 1 in 9 1/2" . . . . . Winchester 94

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

7 x 64mm Brenneke - 1 in 9" . . .Thompson/Center Rifle

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 8.7" . . . . . . . . . .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

7mm Express - 1 in 9 1/4" . . . . .Remington 700, 4, 7400.

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

7mm SAUM - 1 in 9 1/4" . . . . . .Remington Model Seven

7mm WSM - 1 in 9 1/2" . . . . . . . Winchester 70, Browning

7mm RUM - 1 in 9 1/4" . . . . . . .Remington 700

7 x 61 Sharpe & Hart - 1 in 10" .Schultz & Larsen

7mm Dakota - 1x10" . . . . . . . . .Dakota Arms

7mm Remington Magnum - 1 in 9" Husqvarna; Remington 40-XB, 700 (1969);

Magnum Research Mountain Eagle;

Thompson/Center Rifle

7mm Remington Mag. - 1 in 9 1/4" Remington 700

7mm Remington Mag. - 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 Mag. - 1 in 9 1/2" Ruger (present); Savage (present)

7mm Remington Mag. - 1 in 10" .Browning; FN; Harrington & Richardson 300;

Musketeer; Schultz & Larsen; Browning BAR

Mark II;Weatherby Vanguard

7mm Weatherby Mag. - 1 in 9 1/4" .Remington 700

7mm Weatherby Mag. - 1 in 9 1/2" .Weatherby Mark V (present)

7mm Weatherby Mag. - 1 in 10" Weatherby (1965)

7mm Weatherby Mag. - 1 in 12" Weatherby (old)

7mm STW – 1 in 9" . . . . . . . . . .Remington 700, Winchester 70

7mm STW – 1 in 9 1/2" . . . . . . .Ruger 1; Savage

30 M1 Carbine - 1 in 10" . . . . . .Thompson/Center Carbine

30 M1 Carbine - 1 in 16" . . . . . ..30 U.S. Govt. Carbine; Universal

30 M1 Carbine - 1 in 20" . . . . . .Marlin 62; Ruger

7.62 x 39mm - 1 in 10" . . . . . . .Thompson/Center Rifle

7.62 x 39mm - 1 in 12" . . . . . . .Colt; Ruger

30 Herrett - 1 in 10" . . . . . . . . . .Thompson/Center Carbine

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 Remington - 1 in 12" . . . . . . .Remington 81, 141

300 Savage - 1 in 10" . . . . . . . .Remington 81, 722, 760; Savage 110

300 Savage - 1 in 12" . . . . . . . .Savage 99

30-40 Krag - 1 in 10" . . . . . . . . .Ruger 3, Winchester 95

307 Winchester - 1 in 12" . . . . . Winchester 94

308 Winchester - 1 in 10" . . . . .Colt; J.C. Higgins 51-L; Mannlicher Schoenauer;

Marlin 455; Musketeer; Remington 722, 740,

742, 760, 700, 40-XB, 788, 660, 600, 7400,

7600, Four, Six, Seven; Schultz & Larsen;

Ruger 77; Wichita . Savage 99, 110, 112, 116

(present);Weatherby Vanguard; Steyr SSG-PIV;

Thompson/Center Rifle

308 Winchester - 1 in 12" . . . . .Browning 81 BLR, BAR Mark II, A-Bolt II; Colt;

FN; High Standard; J.C. Higgins 50, 51, 51-L;

Harrington & Richardson 300, 308; Husqvarna;

Mossberg 800; Savage 99, 100, 110, 2400;

Sako Bolt Action and Lever Action; Winchester

70, 88, 670, 770; Steyr SSG-PI, PII, PIII;

Stevens 110; 100, Remington 700, 40-XC.;

Springfield Armory M1A

30-06 - 1 in 10" . . . . . . . . . . . . . .Browning 81 BLR, BAR Mark II, A-Bolt II; Colt,

FN; High Standard; J.C. 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.

300 H & H Magnum - 1 in 10" . .Browning; Remington 721; Sako; Winchester 70

300 WSM - 1 in 10" . . . . . . . . . . Winchester 70, Browning; Savage

300 SAUM -1 in 10" . . . . . . . . . .Remington Model Seven

308 Norma Magnum - 1 in 10" .Musketeer; Schultz & Larsen

308 Norma Magnum - 1 in 12" .Browning; Husqvarna

30-338 - 1 in 10" . . . . . . . . . . . . .Remington 40-XB

300 Winchester Mag. - 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 Weatherby Mag. - 1 in 9 1/2" .Weatherby Mark V (current)

300 Weatherby Mag. - 1 in 10" .Weatherby Vanguard (current); Sako;

Winchester 70; Remington 700

300 Weatherby Mag. - 1 in 12" .Weatherby (old); Remington 700 (current)

300 RUM - 1 in 10" . . . . . . . . . .Remington 700; Savage

30-378 Weatherby – 1 in 10" . . .Weatherby Mark V

300 Dakota - 1 in 10" . . . . . . . . .Dakota Arms

32 H&R Magnum - 1 in 10" . . . .Thompson/Center Carbine

32-20 Winchester - 1 in 10" . . . .Thompson/Center Carbine

32-40 Winchester - 1 in 16" . . . .Thompson/Center Rifle

32 Remington - 1 in 14" . . . . . . .Remington 81, 141

32 Winchester Special - 1 in 16" .Marlin 336; Winchester 64, 94

8 x 68S - 1 in 11" . . . . . . . . . . . .Mannlicher-Schoenauer

8mm Remington Magnum - 1 in 10" .Remington 700

330 Dakota - 1 in 10" . . . . . . . . .Dakota Arms

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)

340 Weatherby Magnum - 1 in 10" Weatherby Mark V

338 Lapua Magnum – 1 x 10" . .Sako TRGS

338 Lapua Magnum – 1 x 12" . .Sako TRG42

338-378 Weatherby – 1 x 10" . .Weatherby Mark V

338-06 A-Square – 1 x 10" . . . .Weatherby Mark V

338 RUM - 1 in 10" . . . . . . . . . .Remington 700

348 Winchester - 1 in 12" . . . . . Winchester 71

9mm Luger - 1 in 10" . . . . . . . . .Colt; Marlin 9; Uzi Carbine

9mm Luger - 1 in 14" . . . . . . . . .Thompson/Center Carbine

357 Magnum - 1 in 14" . . . . . . .Thompson/Center Carbine

357 Magnum - 1 in 16" . . . . . . .Marlin 1894; Navy Arms RB

357 Rem. Maximum - 1 in 14" . .Thompson/Center Carbine

35 Herrett - 1 in 14" . . . . . . . . . .Thompson/Center Carbine

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

38-55 Winchester - 1 in 12" . . . .Thompson/Center Carbine and Rifle

38-55 Winchester - 1 in 18" . . . .Ruger; Marlin 336 Cowboy

356 Winchester - 1 in 12" . . . . . Winchester 94

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

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

358 Norma Magnum - 1 in 12" .Husqvarna; Schultz & Larsen

375 Winchester - 1 in 12" . . . . . Winchester 94; Marlin 375; Savage 99; Ruger;

Thompson/Center Carbine and Rifle

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 Weatherby Magnum - 1 in 12" Weatherby

375 RUM - 1 in 12" . . . . . . . . . .Remington 700

375 Dakota - 1 in 12" . . . . . . . . .Dakota Arms

378 Weatherby Magnum - 1 in 12" Weatherby Mark V

40 Smith & Wesson - 1 in 16" . .Thompson/Center Carbine

10mm Auto - 1 in 16" . . . . . . . . .Thompson/Center Carbine

404 Dakota - 1 in 14" . . . . . . . . .Dakota Arms

41 Magnum - 1 in 18 1/2" . . . . .Marlin 1894

416 Remington Magnum - 1 in 14" Remington 700; Winchester 70; Sako;

Thompson/Center Rifle

416 Remington Mag. - 1 in 16 1/2" Ruger

416 Dakota - 1- 14" . . . . . . . . . .Dakota Arms

425 Express - 1 in 10" . . . . . . . .Savage 116 SE

44 Magnum - 1 in 20" . . . . . . . .Thompson/Center Carbine

44 Magnum - 1 in 38" . . . . . . . .Ruger Carbine; Marlin 336, 1894;

Remington788; Winchester 94; Browning 92

444 Marlin - 1 in 38" . . . . . . . . . .Marlin 336; 444S

450 Marlin – 1 x 20" . . . . . . . . . .Marlin 1895M

45 ACP - 1 in 16" . . . . . . . . . . . .Marlin 45

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

45-70 - 1 in 14" . . . . . . . . . . . . . .Thompson/Center Carbine

45-70 - 1 in 20" . . . . . . . . . . . . . .Ruger 1, 3; Marlin 1895S; Browning B-7, 1885;

Thompson/Center Rifle

45-70 - 1 in 22" . . . . . . . . . . . . . .Navy Arms

450 Dakota - 1 in 14" . . . . . . . . .Dakota Arms

458 Winchester Magnum - 1 in 14" . .Remington 700; Winchester 70; Ruger 1; Savage

458 Winchester Magnum - 1 in 15" . .Mannlicher-Schoenauer

458 Winchester Mag. - 1 in 16 1/2" . .Browning; Savage 116SE

458 Winchester Magnum - 1 in 18" . .Sako

460 Weatherby Magnum - 1 in 16" . .Weatherby Mark V