I'll bet you, knowing how tedious serious trap shooters are, that the top shooters of the day used only one barrel. Not only did that give them the exact same POI every shot, but the same hand position on the grip and the same familiar feel on the trigger.

Consistency is the name of the game in competitive shooting, of any "race, creed or color". Thus, the reason most serious competitive shooters of double guns use a single trigger. It's not that a double trigger slows you down on quick second shots ........ it doesn't. Rather, it's the familiarity of doing the exact same thing every shot that most want.

SRH

May God bless America and those who defend her.