Twist of 700 .243

[dbaird]

Anybody know the twist of the older Rem. 700 VS bdl?(the old bull bbl-wood stock vs rifle).

 

[pikespeakgoat]

The one I have, best I can tell using cleaning rod is 9 1/8 or 9 1/4.

 

[laangler]

I had one it was 9.25"

 

[natdscott]

9.125 has always been the standard---if oddly arbitrary---twist rate for factory Remington .243 rifles.

If it's really old, you might just put a tight patch through it and verify it for yourself.

 

[Coyotefurharvester]

Check in the middle of the tube...

 

[Kurz]

Here is the entire list for factory barrel and cartridges:

Common Cartridge/Rifle Twist Rate Reference List

17 CCM - 1 in 10" . . .Cooper
17 Remington - 1 in 9" . .Rem 700, 7
17 Remington - 1 in 10" . .Cooper; Sako; T/C Rifle & Carbine
17 Ackley Hornet - 1 in 10" . .Cooper
17 Mach IV - 1 in 10" . .Cooper

221 Fireball - 1 in 12"...T/C Carbine
221 Fireball - 1 in 14"...Cooper; Rem 700C, XP-100

22 CCM - 1 in 14"...Cooper
22 Hornet - 1 in 12"....T/C Rifle & Carbine, NEA Handi
22 Hornet - 1 in 14"....Kimber 82; Savage 24 - V + F, 219, 340;Cooper; Ruger 77
22 Hornet - 1 in 16"....Win 70; Ruger #3; Browning A-Bolt II, 1885; Kimber; Anschutz 1432
22 K-Hornet - 1 in 12"....T/C Rifle & Carbine
22 K-Hornet - 1 in 14"...Cooper
218 Bee - 1 in 12"....T/C Carbine
218 Bee - 1 in 14"....Cooper
218 Bee - 1 in 16".....Marlin; Winchester
219 Zipper - 1 in 14"....Marlin; Winchester
222 Remington - 1 in 12"....T/C Carbine & Rifle
222 Remington - 1 in 14"...Browning; Rem 722, 725, 700, 600, 40-XB, 760, 788, 660; Savage 24-V, 340, 112, 2400; Sako; Win 70, 770; Wichita; Colt; HVA; Cooper
222 Remington - 1 in 16"... J.C. Higgins 52, early Sako
22 PPC - 1 in 12"...T/C 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; Rem 722, 700, 40-XB, HVA, Sako
222 Rem. Magnum – 1 in 15-1/2"....Sako/1972
223 Remington - 1 in 7"....Colt; Ruger Precision; Eagle Arms Eagle Eye; H&K SL-8
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 std models; Savage; Win 70
223 Remington - 1 in 10"....Ruger Mini-14 & #1
223 Remington - 1 in 12"....Colt Bolt Action, AR-15; Rem 760, 700, 788, 7; H&R; Sako; Savage 340; Win 70; T/C Contender, Encore & Rifle; Ruger # 1, 77; NEF/H&R Handi-Rifle, Howa; CZ
223 Remington - 1 in 14" ...... .Rem 40-XB; HVA; Savage 24F, 24V, 340; Wichita; Weatherby Vanguard; Cooper
224 Weatherby Mag. - 1 in 14"...Weatherby
225 Winchester - 1 in 14".....Win 70, 670; Savage 340, 24-F
22-250 Remington - 1 in 12".....Sako; Savage 110, 112; T/C Rifle
22-250 Remington - 1 in 14".....Browning; Rem 700,788, 40-XB; Savage 99, 110, 112-V; H&R; HVA; Ruger; Win 70, 770; Mossberg; Weatherby; Sako current models
220 Swift - 1 in 12"....Savage 112; T/C Rifle
220 Swift - 1 in 14"....Win 70; Rem 700; Ruger 77; FN; Savage 112-V
220 Weatherby Rocket - 1 in 14"....Weatherby

22 Savage Hi-Power - 1 in 12"......Savage 99

6 TCU - 1 in 10"....T/C Carbine & Rifle
6x45 - 1 in 12"...Cooper
6 PPC - 1 in 10".....T/C Rifle
6 PPC - 1 in 14"....Sako, Ruger VT
243 Winchester - 1 in 9"....Rem 660, 700, 788 (1969), Ruger 77
243 Winchester - 1 in 9-1/8"....Rem 700, 7400, 7600, 7;
243 Winchester - 1 in 9-1/4".....Savage (present)
243 Winchester - 1 in 10"......Browning; Colt; FN; H&R 300, 308, 360; HVA; Mannlicher-Schoenauer; Interarms Musketeer; Mossberg 800; Rem 700, 40-XB; Savage 99, 110, 111, 112-V, 116 (old); Sako Bolt & Lever Actions; Schultz & Larsen; Stevens 110; Win 70, 88,100,670,770; J.C. Higgins 51-L; Ruger #1, 77; Wichita; Weatherby Vanguard; T/C Rifle
243 Winchester - 1 in 12"...Steyr SSG-PII
244 Remington - 1 in 10"....Rem 700
244 Remington - 1 in 12"....Rem 722, 760, 740, 725, 40-XB; Sako
6mm Remington - 1 in 9".... .Rem 600, 700, 4, 6, 7, 7400,7600, 742, 760, 788, 660; Browning B-78; Ruger 77.
6mm Remington - 1 in 10"....Rem 40-XB; Schultz and Larsen; Ruger #1, 77; Browning
6mm International - 1 in 12"....Rem 40-XB
6mm Remington BR - 1 in 14"....Rem 40-XBBR
6x47mm - 1 in 12" ....Cooper; Rem 40-XB
6x47mm - 1 in 14"..... .Rem 40-XBBR
240 Weatherby - 1 in 9-1/2"... .Weatherby Mark V

256 Winchester - 1 in 10"... .T/C Carbine
256 Winchester - 1 in 14"... .Marlin 62, Ruger
25-20 WCF - 1 in 24"....Win 1892 (SN390000 to SN675000)
25-20 WCF - 1 in 30"...Win 1892 (under SN390000)
25-20 WCF - 1 in 36"….Win 1892 (SN675000 to end)
25-35 WCF - 1 in 8"....Savage 99
25-35 Winchester - 1 in 10"....T/C Carbine, Win 94
25 TCU (25 Ugalde) - 1 in 10" ..T/C Carbine & Rifle
250 Savage - 1 in 9-1/2"....Weatherby
250 Savage - 1 in 10".. .Savage 99 (late), 110; Rem 700; Ruger 77
250 Savage - 1 in 14"....Savage 99 (early)
257 Roberts - 1 in 9-1/2"....Browning A-Bolt II
257 Roberts - 1 in 10".... .Rem 722, 760, 700; Win 70;Ruger 77; T/C Rifle
25/06 Remington - 1 in 10". ..Rem 700, 40-XB; Ruger #1, 77; Browning; Sako; Win 70; Savage 110, 112; T/C 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

260 Remington – 1 in 8"....Ruger 77
260 Remington - 1 in 9" ...Rem 700, Savage
260 Remington – 1 in 10"....Browning
6.5 Creedmoor - 1 in 8"..... Ruger American, Ruger Hawkeye, Savage
6.5 Creedmoor - 1 in 9.5"...Weatherby
6.5 Creedmoor - 1 in 10"... T/C
6.5 TCU - 1 in 8" ... .T/C Carbine & Rifle
6.5 M-S - 1 in 8 1/4"......Mannlicher-Schoenauer
6.5x55mm - 1 in 7.87"....Win 70
6.5x55mm - 1 in 8" .... .Husqvarna; Rem 700 (1994); T/C Rifle, Ruger 77
6.5x55mm - 1 in 8 1/4".....Schultz & Larsen
6.5x55mm - 1 in 9" ....Rem 40-XB
6.5x68mm - 1 in 11"....Mannlicher-Schoenauer
6.5/284 Norma - 1 in 8".... Savage
6.5 Remington Magnum - 1 in 9"...Rem 600, 660, 700; Ruger 77
264 Winchester Magnum - 1 in 8"...T/C Rifle
264 Winchester Magnum - 1 in 9"...Browning; FN; HVA; Interarms Musketeer; Rem 700; Savage 110; Sako; Schultz & Larsen; Win 70, 670, 770
264 Winchester Magnum - 1 in 10"..Colt; Mannlicher-Schoenauer

270 REN - 1 in 10"...T/C Carbine
270 Winchester - 1 in 9"...Mannlicher-Schoenauer
270 Winchester - 1 in 9-1/2"....HVA
270 Winchester - 1 in 10" ....Browning; FN; H&R 300; High-Standard; J.C. Higgins 50, 51, 51-L; HVA; Interarms Musketeer; Rem 700, 721,760, 725, 7400, 7600, 4, 6; Savage 110, 114, 116; Sako; Schultz & Larsen; Win 70, 670, 770; Ruger #1, 77; Mossberg; Marlin 455; Wichita; Weatherby Mk V, Vanguard; Magnum Research Mountain Eagle, (Sako/Krieger/Bell & Carson); T/C Rifle
270 WSM - 1 in 10"....Win 70, Browning
270 Weatherby Mag. - 1 in 9-1/2"..Weatherby Mk V
270 Weatherby Mag. - 1 in 10" ....Weatherby Vanguard; Browning BAR Mark II; Winchester
270 Weatherby Mag. - 1 in 12" ...Weatherby (old)

7mm TCU - 1 in 9"...T/C Rifle & Carbine
7x30 Waters - 1 in 9"....T/C Carbine
7x30 Waters - 1 in 9-1/2"..... .Win 94
7mm-08 Remington - 1 in 9" ....T/C Rifle
7mm-08 Remington - 1 in 9-1/2" ....Browning BLR 81, A-Bolt II; Sako; Savage (present)
7mm-08 Remington - 1 in 10" .....Rem 7, 788, 700; Win 70; Savage 110
7x57mm - 1 in 8"......Ruger (present)
7x57mm - 1 in 8-1/2"......Win 70 (post 64)
7x57mm - 1 in 8.7" ... .FN
7x57mm - 1 in 8-3/4" ....Win 54, 70 (pre ‘64); Ruger 77
7x57mm - 1 in 9" .... .Mannlicher-Schoenauer; T/C Rifle
7x57mm - 1 in 9-1/4"....Remington 700
7x57mm - 1 in 9-1/2" .....Ruger #1, 77 (old); Savage 110
7x57mm - 1 in 10" ......Win70
7mm Express - 1 in 9-1/4".... Rem 700, 4, 7400.
280 Remington - 1 in 9"....Magnum Research Mountain Eagle; T/C Rifle
280 Remington - 1 in 9-1/4"....Rem 760, 740, 742, 700, 721, 725, 7400, 7600
280 Remington - 1 in 9-1/2".....Ruger 77; Savage 110
280 Remington - 1 in 10" ....Win 70; Browning A-Bolt II; Sako
284 Winchester – 1 in 8-3/4". ..Ruger 77
284 Winchester - 1 in 10" .....Browning A-Bolt, BLR 81; Savage 99; Win 88, 100
7mm SAUM - 1 in 9-1/4" .....Rem Model Seven
7mm WSM - 1 in 9-1/2" ..... .Win 70, Browning
7mm RUM - 1 in 9-1/4"...Rem 700
7x61 Sharpe & Hart - 1 in 10"...Schultz & Larsen
7x64mm Brenneke - 1 in 9".....T/C Rifle
7mm Dakota - 1x10"....Dakota Arms
7mm Remington Magnum - 1 in 9"...HVA; Rem 40-XB, 700 (1969); Magnum Research Mountain Eagle; T/C Rifle
7mm Remington Mag. - 1 in 9-1/4".... Remington 700; Savage 110, 111, 112, 114, 116; Sako; Win 70, 770; Ruger #1, 77 (old); Mossberg; Browning A-Bolt II, BLR 81; Weatherby Mk V
7mm Remington Mag. - 1 in 9-1/2"... Ruger (present); Savage (present)
7mm Remington Mag. - 1 in 10" ....Browning; FN; H&R 300; Interarms Musketeer; Schultz & Larsen; Browning BAR Mk II; Weatherby Vanguard
7mm Weatherby Mag. - 1 in 9-1/4"..Rem 700
7mm Weatherby Mag. - 1 in 9-1/2"...Weatherby Mk V (present)
7mm Weatherby Mag. - 1 in 10"....Weatherby (1965)
7mm Weatherby Mag. - 1 in 12".... Weatherby (old)
7mm STW – 1 in 9".....Rem 700, Win 70
7mm STW – 1 in 9 1/2".....Ruger #1; Savage

30 M1 Carbine - 1 in 10"....T/C Carbine
30 M1 Carbine - 1 in 16" ...30 U.S. Govt. M1 Carbine; Universal Carbine
30 M1 Carbine - 1 in 20" ...Marlin 62; Ruger
7.62x39mm - 1 in 10"...T/C Rifle
7.62x39mm - 1 in 12"...Colt; Ruger
30 Herrett - 1 in 10"...T/C Carbine
30-30 Winchester - 1 in 10"...Marlin 336; Rem 788; T/C Carbine, Savage 99
30-30 Winchester - 1 in 12" ...Savage 24, 170, 340, 219; Win 64/94; Mossberg 479, 679
30 Remington - 1 in 12"...Rem 81, 141
300 Savage - 1 in 10"...Rem 81, 722, 760; Savage 110
300 Savage - 1 in 12" ...Savage 99
30-40 Krag - 1 in 10"...Ruger #3, Win 1895
307 Winchester - 1 in 12"...Win 94
308 Winchester - 1 in 10"...Colt; J.C. Higgins 51-L; Mannlicher-Schoenauer; Marlin 455; Interarms Musketeer; Rem 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; T/C Rifle
308 Winchester - 1 in 12"...Browning BLR 81, BAR Mark II, A-Bolt II; Colt; FN; High Standard; J.C. Higgins 50, 51, 51-L; H&R 300, 308; HVA; Mossberg 800; Savage 99, 100, 110, 2400; Sako Bolt Action and Lever Action; Win 70, 88, 670, 770; Steyr SSG-PI, PII, PIII; Stevens 110; 100, Rem 700, 40-XC.; Springfield Armory M1A
30-06 - 1 in 10"...Browning BLR 81, BAR Mark II, A-Bolt II; Colt, FN; High Standard; J.C. Higgins 50, 51, 51-L; H&R 300; Mannlicher-Schoenauer; Marlin; Interarms Musketeer; Rem 721, 760, 740, 742, 725, 700, 40-XB, 7400, 7600; Savage 110, 114, 116 (present); Sako; Schultz & Larsen; Stevens 110; Win 70, 670, 770; Weatherby Vanguard, Mark V; Ruger #1, 77: Wichita; Mossberg; Magnum Research Mountain Eagle; T/C Rifle
30-06 - 1 in 12"...HVA; Rem 700V (old);Browning 78, Colt/Sauer
300 H&H Magnum - 1 in 10"...Browning; Rem 721; Sako; Win 70
300 WSM - 1 in 10" ....Win 70, Browning; Savage
300 SAUM -1 in 10" ...Rem Model Seven
308 Norma Magnum - 1 in 10"...Interarms Musketeer; Schultz & Larsen
308 Norma Magnum - 1 in 12" ...Browning; HVA
30-338 - 1 in 10" ...Rem 40-XB
300 Winchester Mag. - 1 in 10"....Browning BAR Mk II, A-Bolt II; FN; H&R 300; Interarms Musketeer; Rem 700, 40-XB; Savage 110, 112, 114, 116; Sako; Win 70, 670, 770; Ruger #1,77; Magnum Research Mountain Eagle; Wichita; Weatherby Mk V, Vanguard (new); T/C Rifle
300 Winchester Magnum - 1 in 12"...HVA
300 Weatherby Mag. - 1 in 9 1/2"...Weatherby Mk V (current)
300 Weatherby Mag. - 1 in 10".....Weatherby Vanguard (current); Sako; Win 70; Rem 700
300 Weatherby Mag. - 1 in 12".....Weatherby (old); Rem 700 (current)
300 RUM - 1 in 10" .....Rem 700; Savage
30-378 Weatherby – 1 in 10"....Weatherby Mark V
300 Dakota - 1 in 10" ....Dakota Arms

303 Savage - 1 in 10"...Savage 99

32 H&R Mag - 1 in 10"...T/C Carbine
32 H&R Mag - 1 in 16"...Ruger
32-20 WCF - 1 in 10"....T/C Carbine
32-40 WCF - 1 in 16"....Marlin, T/C Rifle, Winchester, Savage 99
32-20 WCF - 1 in 24"....Win 1892 (SN390000 to SN675000)
32-20 WCF - 1 in 30"....Win 1892 (under SN390000)
32-20 WCF - 1 in 36"....Win 1892 (SN675000 to end)
32 Winchester Special - 1 in 16"....Marlin 336; Win 64/94
8x57 Mauser - 1 in 9-1/2"......Euro rifles
8x68S - 1 in 11".....Mannlicher-Schoenauer
8mm Remington Magnum - 1 in 10"....Rem 700

330 Dakota - 1 in 10"....Dakota Arms
338 Federal - 1 in 10"
338 Winchester Magnum - 1 in 10"...Weatherby Mark V; Mannlicher-Schoenauer; Savage 110, 116; Win 70; Ruger 77; Sako (current), Mossberg; Rem 700; Weatherby; Vanguard; Browning A-Bolt II; Magnum Research Mountain Eagle; T/C Rifle
338 Winchester Magnum - 1 in 12"....Browning BAR Mark II; Sako (old)
338 Lapua Magnum – 1 x 10"....Sako TRGS
338 Lapua Magnum – 1 x 12"....Sako TRG42
338-378 Weatherby – 1 x 10"...Weatherby Mk V
338-06 A-Square – 1 x 10" ......Weatherby Mk V
338 RUM - 1 in 10" .....Rem 700
340 Weatherby Magnum - 1 in 10"...Weatherby Mk V

348 Winchester - 1 in 12"... Browning 71; Win 71

9mm Luger - 1 in 10".....Colt; Marlin 9; Uzi Carbine
9mm Luger - 1 in 14" .....T/C Carbine
9x57 Mauser - 1 in 14"....Most Euro rifles
9.3x62 - 1 in 10".... CZ
9.3x62 - 1 in 14".....Most Euro rifles
9.3x64 - 1 in 14".....Most Euro rifles
357 Magnum - 1 in 14".....T/C Carbine
357 Magnum - 1 in 16".....Marlin 1894; Navy Arms RB
357 Magnum - 1 in 19"....Chiappa M92
357 Magnum - 1 in 18-3/4"......Win 94
357 Magnum - 1 in 26".....Win 94 Trapper
357 Magnum - 1 in 30".....Rossi 92
357 Rem. Maximum - 1 in 14"....T/C Carbine
35 Herrett - 1 in 14"....T/C Carbine
35 Remington - 1 in 12"....Savage 170
35 Remington - 1 in 14".....T/C Carbine
35 Remington - 1 in 16"......Marlin 336; Rem 81, 141, 600, 760
356 Winchester - 1 in 12".....Win 94BB
358 Winchester - 1 in 10" .....Browning BLR, Mannlicher-Schoenauer
358 Winchester - 1 in 12" ....Savage 99; Schultz & Larsen; Win 70, 88, 100
358 Winchester - 1 in 16" .....Ruger
35 Whelen - 1 in 14".....T/C Rifle
35 Whelen - 1 in 16" .....Rem 700, 7400, 7600; Ruger
350 Remington Magnum - 1 in 12"....Ruger 77 Mk II
350 Remington Magnum - 1 in 16"...Rem 600, 660, 700; Ruger 77
358 Norma Magnum - 1 in 12"....HVA; Schultz & Larsen

38-40 WCF - 1 in 24"...Win 1892 (SN390000 to SN675000)
38-40 WCF - 1 in 30"...Win 1892 (under SN390000)
38-40 WCF - 1 in 36"...Winchester 73, 1892-92 (SN67500 to end)
38-40 WCF - 1 in 38"....Marlin 1894/94
38-55 Winchester - 1 in 12"...T/C Carbine and Rifle
38-55 Winchester - 1 in 18" ...Ruger; Marlin 336 Cowboy, Savage 99
375 Winchester - 1 in 12" ....Win 94; Marlin 375; Savage 99; Ruger; T/C Carbine and Rifle
375 Ruger - 1 in 14"....Ruger
375 H&H Magnum - 1 in 12"...Rem 700; Win 70; Ruger; Sako; Browning A-Bolt II; Weatherby Mk V; Rem 700C; T/C Rifle; Savage
375 H&H Magnum - 1 in 14" .....FN Browning
375 Weatherby Magnum - 1 in 12"....Weatherby
375 RUM - 1 in 12" .....Rem 700
375 Dakota - 1 in 12" .....Dakota Arms
378 Weatherby Magnum - 1 in 12"...Weatherby Mark V

40 Smith & Wesson - 1 in 16"...S&W, T/C Carbine
10mm Auto - 1 in 16"....Most handguns
404 Dakota - 1 in 14"...Dakota Arms
405 Winchester - 1 in 14"...Ruger; Winchester

41 AE - 1 in 13-3/4"......Taurus
41 AE - 1 in 18".......Magnum Research Baby Eagle
41 Magnum - 1 in 14".....RPM
41 Magnum - 1 in 18".....Magnum Research Desert Eagle
41 Magnum - 1 in 18-1/2".... Marlin 1894
41 Magnum - 1 in 18-3/4"......Dan Wesson; Merrill; S&W
41 Magnum - 1 in 20"......Ruger; T/C
416 Remington Magnum - 1 in 14"....Rem 700; Winchester 70; Sako; T/C 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 Special - 1 in 16".....Colt DA
44 Special - 1 in 18"....Charter Arms
44 Special - 1 in 20"....Chiappa M92; Colt SAA; S&W
44 Magnum - 1 in 14"....MOA
44 Magnum - 1 in 16"....Win 94
44 Magnum - 1 in 18"....AutoMag; Magnum Research Desert Eagle; Merrill; RPM
44 Magnum - 1 in 20" ... Abiline; Cimmaron; Freedom Arms; Ruger 96; T/C Carbine
44 Magnum - 1 in 22"....T/C
44 Magnum - 1 in 30"...Rossi 92
44 Magnum - 1 in 38" ...Henry Big Boy; Ruger Carbine; Marlin 336, 1894; Rem 788; Win 94; Browning 92
444 Marlin - 1 in 12"...Win 94BB Black Shadow
444 marlin - 1 in 20"....Win 94BB Timber Carbine, post-1998 Marlin (Ballard rifling)
444 Marlin - 1 in 38"...Marlin 336, 444S; Win 94BB Std carbine
44-40 WCF - 1 in 20"....Colt SAA
44-40 WCF - 1 in 24"....Win 1892 (SN390000 to SN675000)
44-40 WCF - 1 in 30"....Win 1892 (under SN390000), Rossi 92
44-40 WCF - 1 in 36"....Win 73, 1892 (SN675000 to end)
44-40 WCF - 1 in 38"....Marlin; Win

45 ACP - 1 in 16" .....Marlin 45
45 Colt - 1 in 16" .....Chiappa M92; Ruger; T/C Carbine
45 Colt - 1 in 26"......Win 92
45 Colt - 1 in 38"....Henry Big Boy; Marlin; Ruger; Win 94
454 Casull - 1 in 24".....Freedom Arms; Ruger
45 Winchester Mag. - 1 in 16".....T/C Carbine
45-70 - 1 in 14"......T/C Carbine
45-70 - 1 in 20" ......Ruger #1, #3; Marlin 1895S; Browning B-78/1885; T/C Rifle
45-70 - 1 in 22" ......Navy Arms
450 Marlin – 1 in 20".....Marlin 1895M, Winchester 94BB Timber
450 Dakota - 1 in 14" ......Dakota Arms
458 Winchester Magnum - 1 in 14"....Rem 700; Win 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
450 Rigby - 1 in 17".....Most Euro rifles
460 Weatherby Magnum - 1 in 16"...Weatherby Mark V