I have a favorite load that is 5.6 gr of HP38 behind a 200 grn lead flat nose bullet from Missouri Bullet. My XD tactical loves it but it won't reliably cycle my Gen 4 21...just not enough oomph to cycle it with stock recoil spring. Does anyone have a spring setup for reduced power loads in the Gen 4 21? I can get a Gen 3 spring adapter ring for the gun, but then what pound spring to install? I'm using a Wolf barrel. The load is really nice and easy to shoot and I'd like to be able to feed it to both guns! Thanks.