Can't see the forest for the trees.
Don't over-think certain things: If we are called "Single Action Shooting Society," why in the world would we allow anything but single action weapons? I don't go to a pancake house when I am hungry for pizza.
"The Cowboy dress code is prohibiting to new potential shooters, they don’t want to dress cowboy." - I understand that the dress code is less important to some than to others but why call it "Cowboy Action Shooting" if there are no cowboys shooting. Again, pancake house for pizza.
Don't advertise something that you can't deliver. Change/modification is inevitable in any business but don't do so much that you lose your identity in the market.