Blackberry, note my 22" barrel Swede makes 2,966fps with the 129gr. Hornady using Re#19 powder. This powder has a similar burn rate to the various 4350's, yet works splendidly with this barrel length. Pressure wise, is it sub - Norma factory 156gr. as to expansion of the case web. by .001". The 160gr. load noted below develops .0005" less expansion than the 129gr. load. The accuracy with the this load is terrific as well. I submit that 1-1/2" groups off the bags at 100 meters with iron sights is terrific. Once I find a B-Square mount for it, I'll see what a scope might give for acurracy.
: I expect a 160gr. Hornady Interlock, driven at 2,580fps by Re#22 to do nicley on a Mule Deer buck next weekend, given the opportunity, that is. My Daugter will be using her .260 Rem (built by myself) with 160gr. Sierra SemiRN at about 2,300fps. This load is far from even moderate for pressure in her .260, but is accurate, she shoots it well indeed and it duplicates the 6.5x54, a proven game ctg.