Wildrose I ain't bashing you but I have 2 6.5x284s, 2 243s, and I load 260 for one buddy and a 280 for another. Now first I will say that one 6.5 is a 15lbs bench gun and the other falls just under 10lbs but it is a carry rifle, one of my 243s is around 10lbs the other about 8.5, the 260 is a tad over 7 and the 280 is about 8.5 and to start off the 150 NBT over imr4831 in the 280 is the least friendly by far, 140grn partition over H4831 in the 260 is almost the same as 139 lapua and imr4350 in my lighter 6.5 and just a little more than a 107 SMK in my light 243 over H4350. My 15 bench gun does not have a break and I barely hold on to it in matches and practice and it feels like a 22-250 so weight and load have a lot more effect than the caliber itself plus the 111 lrh I reccomended has a break.