Have been wondering this problem for 3 years now. I own a 1963 yugo sks. I use detachable mags and have the hardest time trying to load the magazine in the rifle. The bolt doesnt lock, so I hold that back, then I hold the mag. catch open and then once its almost in there I push it all the way so it seats. Is there a easier way to load a mag?? My uncles Russian sks's bolt locks back and he has no problem using mags.