Brad,
I didn't get the velocity with H4350 in my .260 that everyone seems to get in any bullet weight. Good accuracy though.
Couple of weeks back a 130 Scirocco with 42.5 grains of RL-17 in R-P brass and CCI's gave me 2900 and good accuracy. I maxed at about 43.4'ish. 21 1/2" tube.
Run the ballistics on that one...grin...