Hello all. I recently had a Rem. 700 re-barreled with a 6mm barrel off a Rem. 600 Mohawk. I just got it in yesterday, haven't shot it but I've noticed my reloads chamber hard, as in the bolt closes hard. I full-length re-size and am no stranger to reloading-since 1981 and I've never had this experience. I can drop a "fired" case in (not resized) and the bolt closes normally, like I'm used to. So my first thought was the oal. length of the cartridge was excessive so I seated the bullet deeper and deeper trying to figure out the problem but to no avail-same hard bolt closure. I might add a reputable smith did the work. So is this a head-space problem? Thanks for your help