So I am getting POF revolution piston .308. From looking at reviews it looks like this thing is kinda picky about ammo. I'm guessing this is due to the piston system's interaction with the barrel from a harmonics standpoint, but just a guess. Anyway, I was wondering if anyone else owns this rifle and what they have been feeding it. I was thinking of breaking it in with sierra 175s and 168s, (manual says to break it in with bullets 168 or heavier, I have them on hand, and reviews have been successful with them) and then maybe switch to Hornady 155 BTHPs, or maybe even a 135 monolithic. Wanted to see what experience others had. Also wondering about feedback on the Hornady 155s, as I've never shot those before. Thanks.