Yes. StaBall 6.5. When I shot the 144's the load was wrong. It ran 2755. In between my windows of 2660 and 2780. It shot an ES of 30 over a 10 shot string but still put 5" groups on steel at 1,000yds. I just tested 153's with 4350, H100V and StaBall and they shot like shit. Gonna go backwards...