303 bullets in 7.62 x 39

[saskcop]

Play with the bullets a bit. Running 123 sst in .310; 123 speer .310, and a good load with the old 30-30 .308 speer fnsp, about to test the .308 bal tip and sierra. 311 150. bore dia in my carbine is .310....

Anxious to see your results! Please post when completed!

 

[MiG25]

CIP specifies a .312 groove diameter in the 7.62x39.

 

[flashman2]

Had good results with the .311 Sierra Pro Hunter 125 spitzers out of a mini 30.