I think I need some education here; what is the premise of a 3-gun match? I had thought it was to simulate real-world scenarios, but some of the action and targets don't seem to fit that model, as far as I could see.
Back in the '80's Multi gun was based off combat type shooting and tactics. Today it's simply action shooting. Different matches challenge the different shooting skills. Sometimes its an all out foot race. Sometimes its about who can pull the trigger fastest. Sometimes its a memorization challenge with hidden targets. Sometimes its an accuracy challenge. The gun is that its never the same.
To be succesful it requires you to master every possible challenge with all 3 guns. You need to know your rifle zero from 1 to 600 yards in evey possible position.
You need to know how to shoot flying targets, kniw your shotgun patterns with multiple chokes. Be able to shoot slugs from 1 to 100 yards. You need to know how your gun shoots buckshot too.
Pistol skills are required to be accurate and fast on targets from 1 to 100 yards.
I have shot from moving platforms and vehicles as well as shot at various types of moving targets. Just when it seems like there isn't anything I haven't tried the next match they come up with something new, exciting, challenging and fun.