Bullet size for STG 2000 C

[pmeisel]

I want to load some rounds for the STG 2000 C (AK semi clone) that is on long term loan to me while my son is overseas. 7.62x39mm

Don't cast, will buy both some jacketed (a few) and cast (what I prefer).

What diameter should I get??

[RU shooter]

Without slugging the bore I would say .312-.314 for cast and .310-.312 for those inaccurate jacketed things.In my Rom. kit build AK I use .314

Tim