I thought he may prefer a full bore projectile since he's shooting powerbelts, but as is often the case guys shoot what they can find easily, or what someone else said worked for them, without really trying a variety of things. I'm guilty of that. I shot maxiballs in my sidelocks and I've only shot FPBs in my inline. BUT, I'll say I never had accuracy or terminal performance issues that made me want to consider another option. Anyway, from my limited experience and accounts I've heard, FPBs do reliably shoot through deer. Some have issues with loading, and some don't get the accuracy they want.