I've had two of the Optimas. My old one was a very accurate gun, shooting most everything well. I shot it with both 2 and 3 50 grain pellets of Triple 7, finally deciding that 2 pellets were all I needed as the recoil produced by the 150 grain load was just more than I liked. I was shooting a 240 Hornady XTP 44 caliber in a sabot.
I bought a new one last year, and sighted it in using 100 grains of White Hot pellets and a 245 grain Powerbelt Aero bullet. It shoots well also. One thing I have noticed about shooting them, and this may be true with all blackpowder rifles, and that is that after a few shots the accuracy falls off unless you run some patches down the bore and clean it up some.
