OK I get that if you fire multiple shots with a weapon that can fire them and score degrees of success then extra shots hit. Yes, Jargal, I've read the rules.
How do degrees of success affect a single shot weapon? I can't quite seem to find a note on that.
Unless there is a rule I might go with multiple DoS might add 1 point of damage to the rolled damage pet DoS, or possibly say each DoS lowers the threshold for righteous fury.
Sometimes one well placed shot can be more effective than a hasty burst of autofire...