I tried the 162s with 7797, h1000, and Retumbo. I could get close to 3100fps using Retumbo, but things really came alive when I tried some RL26. With that I was able to reach 3200fps out of a 24" barrel, although I know that was leaning on it and I backed down a bit looking for an accuracy node. However, it seems like 3100+ fps is pretty doable with RL26. I haven't found the sweet spot yet (I haven't made it to the range in a while...short days and cold!) but it looks pretty promising, at least as far as MV is concerned. It seems to be a pretty ideal burn rate for 160-168 grain bullets from a 7mm Rem Mag.
BTW: RL 26 also worked great in my 6.5 SAUM with 147 gr ELD-M. It ties Retumbo for speed and accuracy using about 2 grains less. It's a little slow burning for a .260 Rem, but if you shoot 140gr or heavier bullets and can load them l-o-n-g you can just get enough RL26 into the case to make it work. Seems about perfect for a 260AI shooting 140 grainers. OK, now back to your regularly scheduled program...