My efforts were somewhere in the middle, decent accuracy and velocity but certainly doesn't supplant H4350, RL16, or RL26. I truly believe that if Winchester had called it StaBall 7-08, they would've cornered the market for 7-08 shooters. StaBall seems tailored for that cartridge. I use 48.8grs under a 140 Accubond for 2900fps in a 7-08 with a 23" barrel. If StaBall is the only powder available it will keep your 6.5 shooting, just not to the level if others IMO. Strangely, it doesn't foul the barrel to bad but when your done shooting, looking down the barrel you'd think you were looking down a muzzleloader, lots of "leftovers".