Hi all, I have a 300 RUM and have turned all the necks on my cases to .014 to .015. I load them with 98.0 gr of H-1000 and 165 SST. At the next reloading using the above when I went to seat the bullets, some went easy and some went hard. I don't see any pressure signs. Did I start to extrude the brass into the neck making it thicker again or is it something else.