I don't want to start a fight, but I am old school and in my opinion...from what I have seen of '3-gun' matches on TV,,,,that game is for people who don't know how to shoot.
I would like to see those guys shoot a 3 gun match with the following: rack grade 1911 in 45 hardball....an off the shelf M1 Garand 30-06 M118 (173gr ball)...and a new in the box Rem 870 12 gauge shooting high brass rounds.
Then I could tell if they knew how to shoot a real firearm.
And I'd like to see you take their gear and make the shots they do. It's easy to say "it's all gear", "it's an arms race" or whatever. Bring your "high brass" loads to a match and ask the top shooters to shoot against you. Or ask to shoot their gear, I'm sure they'd let ya.
