Thinking about a Mech Tech .45 ACP CCU for my G21. Have done some research here and other sites. I believe Mech Tech is a quality product but my concern is that the Mech Tech blow-back mechanism may require "near-max" / +P loads to function reliably. My usual .45 ACP load is Promo 4.6 ~ 4.8 gr under a 200 ~ 230 gr. boolit which is hardly high-end. I sure don't want anything that requires a special loading.
The voice of experience from anyone who uses a Mech Tech .45 ACP would sure be appreciated.