Re: .223 powders
Hunter is the ideal Ramshot powder for the .260 Rem and the 140's. Think of it as H4350 in ball form. Since most serious .260's wear custom barrels; I'd be hesitant to specify loads. But as a ballpark, I'd consider the 140 SMK and A-Max, also the 140 SST for hunting, the 142SMK and 139 Scenar, and start my loads at 42.0gr. First things first, do incremental pressure testing for <span style="font-style: italic">your</span> barrel. The 120 Nosler BT and 120SMK are very good for semi's and upclose, and the 95 V-Max is a flat, accurate, and devastating varmint bullet. For the 120's and down, the Hunter will work fine, but Big game is also worth trying, maybe even TAC for the 95. My 95 V-Max load is 47gr of H4350, a Hodgdon published <span style="font-style: italic">minimum</span> load. I use the minimum because I'm being cautious about running bullets at 3400-3500fps through a 1:8" twist.
Greg