Just shooting my 6.5 x 55 today. Load of 49 grains N160 with 120 grain heads. Never had any problems...or havent noticed any , but today a couple of cases were a bit tight when I when to eject them and the bolt was hard to lift. I also noticed the ones that were hard to lift had a mark on the face of the case from the ejector. Im pretty sure this is a pressure sign ...and others with me agreed....if I am backing off the pressures should I do it in half grain incriments or less?