Originally Posted by
MountainDevil54
Talk Lehigh into making a .310" bullet. This is for a 7.62x54 round. A big time popular rifle, but NO aftermarket bullets for reloading unless you use a terrible fitting .308"
????? All kinds of .310 bullets out there. You use the same bullet in the x54 that you do for the x39, .310. I am assuming by popular you mean those with Mosins? x39 is vastly more popular than the x54's. Same bullet just different case length. Hornady and Barnes both make several versions of the .310 bullet. Sierra has a few.
Try slugging your barrel MD and see what you come up with. You may be surprised to find your barrel may be as much as .312! Lotta Mosins out there that just don't have consistent sizing of the barrels. Lehigh does make a .311 Controlled Fracturing 123 grain bullet. A .311 may just tighten your groups up as well.