Common rifle twist

[Simo2830]

What is the standard common manufacturer's rifle twist for .30-06 and .308 rifles? My recollection is 1:10" or 1:12", but I'm just trying to verify. Thank you.

 

[Rifleman97]

30-06 seems to vary more rifle to rifle than 308 but standard 308 twist is 1:12, although some mfgs are starting to convert to 1:10 or 11 for it.

I know for a fact Winchester uses 1:10 in 30-06 and 1:12 in their 308. I think weatherby is the same. So I guess it depends what mfg you want to know about?

 

[ncwg2boatguy]

1:10 is the factory norm these days for a while now. A few company's who sell shorter barrel setups have 1:11 twist obviously for lighter bullets but you dont see many 1:12 factory these days or im not following those companies

 

[FEENIX]

What is the standard common manufacturer's rifle twist for .30-06 and .308 rifles? My recollection is 1:10" or 1:12", but I'm just trying to verify. Thank you.

If you are verifying what you have, try this ...


This works regardless of make/brand.

 

[Rflshootr]

What is the standard common manufacturer's rifle twist for .30-06 and .308 rifles? My recollection is 1:10" or 1:12", but I'm just trying to verify. Thank you.

Remington has used both in the 308. It depends on the model. I have a 308 700 VLS with a 12 and a 700 BDL with a 10. They have made 40X's in both, depending on the model. So, it just depends. Pretty much all 30-06's that I know of are 10's, except a few.

SIERRA
5 RELOADING MANUAL • 5TH EDITION

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

A few -06's also had 12's.

30-06 - 1 in 12" . . . . . . . . . . . . . .Husqvarna; Remington 700 Varmint (old); Browning 78

 

[osok-1k]

The Army's M24 is 1-11.27, my 700 PSS is 1-12 and my Tikka is 1-11 (all 308s). The Army sniper round M118 is a 175 grain Sierra MK so the light bullet concept is not applicable. That said, most current production 308 rifle are 1-10. The 1-11.27 is interesting, I asked Mike Rock of Rock Creek barrels who at the time worked at Aberdeen Proving Grounds and was instrumental in developing the M24. He said that he specified the .27 part to make people think that it was some magical formula for shooting the 175 Sierra bullet and that 1-11.25 works just fine. He laughed.

I like 1-11 for 308, my custom 308 has a Brux medium Palma 1-11 and shoots heavy (175 class) bullets very well. I think this group is smaller than .221 but it still ain't bad for five rounds.

 

[Maligator]

Sako, Tikkas, and Franchi are all 1-11 twist for 308 and 30-06 for their hunting rifles. I agree, I think it depends on manufacturer.

 

[sable tireur]

From the compiled list of factory twist rates:

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

 

[waveslayer]

The Army's M24 is 1-11.27, my 700 PSS is 1-12 and my Tikka is 1-11 (all 308s). The Army sniper round M118 is a 175 grain Sierra MK so the light bullet concept is not applicable. That said, most current production 308 rifle are 1-10. The 1-11.27 is interesting, I asked Mike Rock of Rock Creek barrels who at the time worked at Aberdeen Proving Grounds and was instrumental in developing the M24. He said that he specified the .27 part to make people think that it was some magical formula for shooting the 175 Sierra bullet and that 1-11.25 works just fine. He laughed.

I like 1-11 for 308, my custom 308 has a Brux medium Palma 1-11 and shoots heavy (175 class) bullets very well. I think this group is smaller than .221 but it still ain't bad for five rounds.

It was 11.25, but we are splitting hairs! Lol!

 

[Simo2830]

30-06 seems to vary more rifle to rifle than 308 but standard 308 twist is 1:12, although some mfgs are starting to convert to 1:10 or 11 for it.

I know for a fact Winchester uses 1:10 in 30-06 and 1:12 in their 308. I think weatherby is the same. So I guess it depends what mfg you want to know about?

Did any of the manufacturers make rifle with a factory twist of 1:11.25"? I've seen that twist rate touted by custom barrelmakers of late, but was it a common twistrate decades ago? Apologies for the question, but I don't know where to access such information online.

 

[waveslayer]

Did any of the manufacturers make rifle with a factory twist of 1:11.25"? I've seen that twist rate touted by custom barrelmakers of late, but was it a common twistrate decades ago? Apologies for the question, but I don't know where to access such information online.

yes, all Remington 700 5R's were 11.25" twists for the 175 grain bullets. But with the advancement of faster twists stabilizing and manufacturing processes improving on bullets... the game has changed to faster twists, better overall. You can handle the heavies and get better performance, then we head into Left twist barrels over right twists....

 

[Simo2830]

Is there an advantage to LH twist? Full disclosure...I was watching a video last night re: the King assassination. One of the issues in the case was that the bullet that killed him had a 1:11.25" twist rate, yet the rifle had a 1:10". As the rifle used was supposed to have been a Remington 760, I was wondering if there had been a variety of rifling twists in factory rifle barrels in or around 1968. The devil is always in the detailed minutiae. I think M1 Rifles, 1903s, et al, were all 1:12" twists, so the 1:11.25" struck me as odd.

 

[waveslayer]

Is there an advantage to LH twist? Full disclosure...I was watching a video last night re: the King assassination. One of the issues in the case was that the bullet that killed him had a 1:11.25" twist rate, yet the rifle had a 1:10". As the rifle used was supposed to have been a Remington 760, I was wondering if there had been a variety of rifling twists in factory rifle barrels in or around 1968. The devil is always in the detailed minutiae. I think M1 Rifles, 1903s, et al, were all 1:12" twists, so the 1:11.25" struck me as odd.

there is an advantage, Gravitational pull, it will cancel out Spin drift. Go to the Hide to get all the details, very interesting stuff

 

[Rifleman97]

there is an advantage, Gravitational pull, it will cancel out Spin drift. Go to the Hide to get all the details, very interesting stuff

It's not a 1:1 cancellation, it just lessens the effect and can even go the other way with really fast twists. Plus LH twist only cancels it out in the northern hemisphere. Sure most of us live in the northern hemisphere, but it's important to note as there's a surprising number of Aussies into long range shooting who might be below the equator, as well as southern Africans (by that I don't mean the country but the southern portion of the continent)