Not wanting to open a can of worms about springs - picking springs seems to be…a can of worms. Wolff lists recoil springs from 7# to 16#, then above that for “extra power”. Then there’s firing pin, trigger, etc, etc.
What is a reliable starting point for shooting WB ammo consistently? For point of reference, I shoot a Tisas 5”, modern category, and not recoil sensitive.