I got this 22 rifle from my grandfather, it's in great shape but im have a problem with the magazine. this is a magazine (holds 5) bolt action rifle. the rim of a top bullet will catch the rim of the under bullet in the mag. and lock up the cycle. I have loaded it slow and precise to make sure each bullet is aligned proper, but it will still overlap in the magazine. not every time but when it does I have to drop the mag. push the lower bullet down to release the top bullet. why?