Mosin 91 "B" barrels .308?

[big bear]

Does anyone know if Finn Mosin 91 with "B" barrels are 308, 310,311 calibre? safe to shoot with surplus 7.62x54R ammo, thanks.

 

[whitey07]

I've got a b barrel m39 it slugs out at .310 it shoots surplus 7.62x54r no problem. It seems to like hornady 174gr .310 fmjhpbt in front of imr4350.I win matches with this combo.I think m39s use cut down b 91barrel blanks

 

[SA85M1]

Two theories on the Finn "B" marked barrels...one is the B is marked on bbls made in Belgium for the Finnish Army,the other is in regard to bbl quality,and there can be bbls found marked A,B,C,and a few with other letters.Does your rifle have a "D" stamped on the bbl shank? Some Finn bbls are .308-.309,though the Finns did mod a number of these bbls-hence the "D" marking to accept .310-311 ball rounds...if your rifle is a Russian-SA marked Finn capture it's likely with the .310-.314 bore and suitible for 7.62x54 ammo,..not .308.....slugging the bore is the best bet....

 

[Nabs]

Two theories on the Finn "B" marked barrels...one is the B is marked on bbls made in Belgium for the Finnish Army,the other is in regard to bbl quality,and there can be bbls found marked A,B,C,and a few with other letters.Does your rifle have a "D" stamped on the bbl shank? Some Finn bbls are .308-.309,though the Finns did mod a number of these bbls-hence the "D" marking to accept .310-311 ball rounds...if your rifle is a Russian-SA marked Finn capture it's likely with the .310-.314 bore and suitible for 7.62x54 ammo,..not .308.....slugging the bore is the best bet....

Agreed on the bore slugging idea. I slugged the bore of a buddy's Finnish M-27 as it was D stamped but he wanted to be sure as to the bore diameter before firing anything through it. Websites and people will tell you one thing but your rifle may be another.

 

[big bear]

B barrel

If it is any help my rifle looks exactly like the Mosin 91 with B barrel for sale right now on the Milsurps EE

 

[Ryan j]

Your barrel is a 'B' blank VKT with a 'D' bore. I shot S&B SP's that were .311 out of it and they grouped pretty good IIRC.

 

[BUSHMAN79]

If it is any help my rifle looks exactly like the Mosin 91 with B barrel for sale right now on the Milsurps EE

Just like mine, you should buy it! I slugged the bore on it long ago, and I think it was .311. Shoots great.

 

[big bear]

thanks

Your barrel is a 'B' blank VKT with a 'D' bore. I shot S&B SP's that were .311 out of it and they grouped pretty good IIRC.

Thanks