Tuesday I got my first 44 Mag. A Ruger Super Redhawk. I took it to the range today to try it out. I cleaned it first to make sure all the oil was out of it. I fired about 30 rounds in fairly quikck order(less than 5 minutes). When I went to load it again 3 of the shells wouldn't full seat. I thought the chambers were dirty, but they weren't. So I packed up and went back to the house to clean it. When I got home I tried loading some rounds again before cleaning and they easyly fit in the chamber. By this time I got home the gun had cooled off. Could a hot gun been the reason for the chambering issues? I thought it might have been my reloads and planned on putting on a little more crimp. My load was 240gr. LSWC, 18.5 grs. of 2400 and a WLP. Anyboby have any thoughts on this?