Have not dealt with X-Reload, so can't compare. I've gotten my bullets and brass from Henry, at Budget Shooter Supply - both for 500 S&W and 50 AE. At the time, he supplied 2 bullet weights for .50 cal - 325 gn and 350 gn. (Berry's Bullets). The brass I got from him was Starline, which works well for me. I believe the 325 is intended for the 50 AE and the 350 for the 500 S&W - but, both guns will shoot both bullets. I found his prices were/are good and shipping is prompt.