I think "single action" is really a misnomer as it take 2 actions to fire it. I've become a fan of the "single motion" concept. I was issued an M29 in the mid 60's in the Artic circle when I worked for a defense contractor. Here in soth Texas it is not bears buy angry feral hogs. I have a lovely 629MG and a 686 snubbie. Lately my favorite has been a battered, mismatched Brazilian contract 1917. Action is worn smooth and it reloads with moon clips very quickly not that feral hogs often shoot back.