I have a Hornady progressive press and already reload for my FS92 Beretta, SIG P220, S&W snubbies and 686 (38, 357) and M&P15 223 (EOTech 557 and 4 x magnifier) just fine. With a new G21, is it better to: 1. Not reload for this gun, related to head support ??? 2. Go ahead and reload, but always keep well within SAAMI specs ?, or 3. Go ahead and replace the barrel with a Bar-Sto barrel and reload until the cows come home? Same question for a 40 cal G23. I think the chamber pressure max is around 35,000 psi for this one, a bit lower than the 10 mm, but a lot higher than the G21 45 cal. I know Glock says no reloads, but how much of this is related to the Glock's ability to eat and kick out just about anything you feed it and support near the bottom of the case? Also, for anyone out there with a Gen 4 G22, are you reloading for that handgun as well? I would rather ask before the fact, than afterwards. KBs can spoil your entire weekend.