Jeff, the key word in TWR's comment about shooting Standing with a single stage was "quickly".
The precision required in HP is a whole 'nuther animal.
I've had students who were very good 3 Gunners try to shoot like that at CMP clinics. It does not work out for them.
Totally understood but trophy trigger rolling a 2 stage is pretty dang fast IMHO. Fast enough for me to place in local matches years ago...
And note I've not had time or money or effort to buy something supposedly perfect like an Elftman or such yet.
