I just started reloading for my 300 wsm. ive only shot a box of factory ammo out of it so far. They were winchester 180gr power points. Well when i went to run them through the resizing die they don't fit. I have a bag of brand new winchester brass and they fit right in no poroblem. Now what i did notice is where you measure the pressure band at the bottom of the base, it is 10 thousands bigger than the new brass, which seems alot. but i don't know what size it was before it was fired. And also on the primer, the indent has a slight crater like there is to much pressure. Now this is a brand new rifle and factory ammo, but could it be possible that there is a little over pressurizing? the dies i have are reddings that i got from the local gun shop used and were soaked in grease. and i don't know if this is causing the case to get stuck, i cleaned it out but there could possibly be some in there. But to me it just dosn't seem right. I should be able to get that brass in the die. well if anyone has any info it would be great thanks.