Using .308 For 7.62x39 .311

[reloader775]

Ive searched on google with mixed results so I thought I'd ask here. Is it possible to use .308 diameter bullet safely when 7.62x39 calls for .311?

Thanks

[Full Clip]

It will work but you'll get crap accuracy and probably keyhole.
Just get the right bullets: .310, .311 will work (I'e used up to 150 grn).

[Cowboy T]

+1. It's safe, but it can play havoc with your precision if your bore's not 0.308".

Slug your bore. If it's .308", like with many Ruger Mini-30's, then that's exactly the bullet size you want. Same goes for a Finnish Mosin-Nagant, where the reworking was done with 0.308" barrels. However, if it's a Com-block firearm (e. g. AK-47, SKS), you're probably looking at a .311" bore and want to go that size.