Another note, while initially expensive to get set up, BR shooting is a pretty reasonable hobby cost wise. A good, used BR LV rifle is under 2K, don't underestimate a good Weaver scope, rest, bags, gear, etc.. $4K will get you there. Then also, the big push is toward the 30 BR, which endures thousands of rounds before wearing out (some say that they'll stay at peak accuracy with a good, cut rifled barrel for over 8000 rounds, WOW), so you aren't looking at a rebarrel every 1500 to 2500 rounds as you are with a 22 or 6mm PPC.
Those of us who like to have these discussions, but have been scared away by concern over our skill not being world class, don't be. It is way fun, and most everybody shooting are just good folks doing so recreationally, just like us.
Also, don't let the $4K pricetag kill you either. A person using an off the shelf varmint rig like a Remington VS in 223 (223 for barrel life mainly), Caldwell rests and a decent scope can compete quite nicely for less than $1200 or $1300.
I'll take a master marksman with a cheap rig like that over me, and most everybody else, even if I am shooting a state of the art everything rig. The reason is in how they time their shots, judge wind and mirage, and use their experience.