For starter based on where you are located have you considered the PRS/NRL 22 style comps. Senior (here on THF) puts on multiple matches and there are others within a couple hours drive to you.
Just like all the shooting sports you can go basic or get as extravagant as you feel inclined and ammo is not as hard to find nor as pricey as the Centerfire stuff.
I shoot a few local club matches and when my schedule allows make a bigger match here and there. Wanted to make the Punisher Match that Senior is having next weekend but have to play golf in the Nimitz Golf Classic.
Are you saying they have 13 guns or they weigh 13lbs in PRS? I would say both of those would be incorrect. The guns now weigh 23lbs and instead of 13 guns it’s that many shooting bags