Kinda my thoughts on the 260 vs. 243 A.I. as well. I've shot 7828, H4350& 4831sc, H100v and Retumbo in the 243. 7828 does well for me outta the 280/162amax load, and 300Ackley/180 TTSX. Good stuff. Saw your post about it with your 6.5.... what a screamer.