I have been having a lot of trouble with magazine fit and feeding with both my Model 93 rifles - both the 22 magnum and the 17HMR. The magazines are hard to push in and pull out, even if I keep rearward pressure on the locking tab throughout. Both rifles also have feeding difficulties. The bullet nose often jams against the bottom edge of the chamber. I can reduce this by keeping constant upward pressure on the forward part of the bottom of the magazine, but it still happens quite a bit. I've tried working the bolt as quicky as possible and with some real snap, but that has resulted in pushing some 17 HMR bullets back into the case. I bought two brand new mags, and that helps a little, but the problem still exists. Same problem with both 5- and 10- round mags.