Hey guys, I've had a stash of 100 Hornady 185 XTPs laying around for years that I got on a "get loaded" promo. I have two .45 pistols and plan to start reloading for them. I have hundreds of once fired brass cases and was wondering if straight wall pistol brass manufacturer is as important as for bottleneck rifle cartridges? The brass I have is mixed and in a big zip loc, and I'm not opposed to sorting it out if it would make a difference. If not, is there a reliable and consistent powder that ya'll would recommend for the 185 XTP out of a 5" government model 1911 and old school Sig 220?