This is what iam loading 308 win: Remington brass, winchester large rifle primers, Hornady 165 gr BTSP bullets, Winchester 760 powder. Load book has a range of 48gr on low side and a max load of 52 gr. I am loading for a new rifle, I started by loading 10 loads @ 1 grain increments (48, 49,50, 51). My question Load @ 51 gr just about fills the case, maybe 1/4" from top of case. 52gr would be hard to get in case. There is no mention in the load info that this is a compressed load. Iam I doing something wrong?