I competed at a small local PRS shoot for a few years. At least it USED to be small. It was always 8-12 guys, done by noon, we all had a great time. And then it got popular. Now there's 50 guys and it takes all day. I'd rather drive up in the mtns and shoot with a buddy or two than sit on my ass for 10 hours for 10 minutes of shooting.

My setup was a DPMS LR260 with a NF 5.5-22x50. But there were guys with the whole spectrum of rifles, even an old guy with a bdl Rem 700P in 308 loading from the top!

If your match doesn't handicap semi-autos, there's nothing wrong with a large frame AR IME. 243, 260, 6.5cm.