Why is virtually all commercial and military ammunition for the 7.62x39mm loaded with the same bullet weight of 123gr? Does the cartridge not perform well with lighter of heavier bullets? - Quora

Answer (1 of 9): 7.62x39mm can certainly be customized to suit particular use better - be it changing the bullet weight, composition, or powder load. But, there’s just really no commercial demand for it. One reason is monolithic market for the guns that utilize the round - mostly AK variants and

Can you reload a 7.62x39 bullet into a 7.62x54r case to increase velocity at the expense of mass? - Quora

Guns and Firearms: What is the strongest 7.62x39mm cartridge? - Quora

How much gunpowder does a 123 grain 7.62x39 cartridge contain? - Quora

Which round does more damage, 7.62 or 5.56? - Quora

Why is virtually all commercial and military ammunition for the 7.62x39mm loaded with the same bullet weight of 123gr? Does the cartridge not perform well with lighter of heavier bullets? - Quora

What would happen if one attempted to fire a 7.62x51mm round from a rifle, which is specifically made to use the 7.62x39mm round as standard ammunition? - Quora

Why is virtually all commercial and military ammunition for the 7.62x39mm loaded with the same bullet weight of 123gr? Does the cartridge not perform well with lighter of heavier bullets? - Quora

Could ammo such as .50 BMG be made so there are two parts of the bullet: one that get it out of the gun and flying, and another that detonates while the

Why are hollow-point rifle bullets more accurate? - Quora