Originally Posted by vonmazur

The Soviet Pistole Patron Obrazhets 1974g/AKA 5.45x39.5mm AK 74; is designed to tumble upon striking any media denser than air....They do this by having an air space in front of the steel or antimony core of the bullet, this causes the projectile to tumble inside the "target". The Winchester Western 6,5mm Carcano Ammo that LHO used was made to function in the original manner of the Italian Ammo of the same model, the difference being that the US made ammo uses a lead core and a gilding metal jacket, the Italian uses a mild steel jacket, nickle plated, with an antimony core (usually)...In any case, the projectile used in this cartridge would not "explode", but its impact might cause that effect simply by energy transferance...

Dale in Ala