i bought a like new cz 550 varmite in 22-250 that its just about impossible to close on a loaded shell, and including a full lenth sized case. if i resize the case two times with the decapping rod out and realy lean on the press handle i can close the bolt, but its still overly hard. i have cleaned and polished the chamber. by the way the loaded shell and a F L sized case fit into a rem 700 like greased lighting. my last resort will be a visit to a gunsmith to have the chamber ck,d.