I guess I jump in here with my first post...That's a real nice shooter, it's been along time since I hunted with the Browning A5. Like to own another one some day. I really miss mine.
140 rounds and just one failure ? And the rings' setting were set for heavy loads using light loads. Hmm. From what I understand, setting the rings for heavy loads will cause jams using light loads, by the less action recoil chambering. As far as unnecessary recoil, I would say' Not since your using light loads anyhow.
For firing heavy loads' .the more rings that are put in, the more slower the barrel action will move.The rings cause friction that slow the moving barrel down, absorbing the recoil.
Firing heavy loads with less rings, will give unnecessary recoil slam' that may damage your gun, and a sore shoulder.
I think I got that right? lol...... I'll leave it to the experts, to chat along.