If the answer is yes then you are going to want to read this reloading thread.
https://www.canadiangunnutz.com/for...-180gr-311-full-copper-plated-bullet.2561878/
It is related to a prototype .311" copper plated bullet manufactured by CAMPRO that can be used in your .303 British, 7.62X54R, 7.65×53mm Argentine, 7.7×58mm Arisaka chambered rifles (and more).

https://www.canadiangunnutz.com/for...-180gr-311-full-copper-plated-bullet.2561878/
It is related to a prototype .311" copper plated bullet manufactured by CAMPRO that can be used in your .303 British, 7.62X54R, 7.65×53mm Argentine, 7.7×58mm Arisaka chambered rifles (and more).




















































