On these backslaps, have you asked the shooter how his gun is sighted in? Are they 3 inches high at 100yd in order to be dead on at 200, or something like that? If shooting say high shoulder shots at 100 or less they may not be compensating for bullet rise thus the "backslap". Just a thought.

Enjoy the tales. Hope you and the dog crew are getting plenty of water and rest. looking forward to the next track.