Having watched Mike Beliveau's video on it I became curious... Do these have a safety function? With 9 shots an empty is certainly no big deal! What is a max load for the .44 and 20 ga? What is the recoil like shooting the shotgun barrel? What is the range for the shotgun keeping the pattern under 24"? Are these prone to cap jam problems? What is the real difference between the Army, Navy, and Cavalry models? Being a Pietta I'd guess it takes a .451" RB?