I was admiring the Marlin 336w 30-30 rifle for sale at a gun store online. I went to forums to research it and found that military 7.62x39 ammo can be fired in the 336w, which is good because that ammo is cheap (1/3 the price of 30-30 ammo). However, someone said that if you put 7.62x39 ammo in the tube, the tip of a bullet can set off the primer of the next cartridge. Could that happen while shooting the rifle? What if the rifle was dropped with 7.62x39 ammo installed, could it explode?