We have hunting matches down here in New Zealand that are field style. Rifle weight limit to10# max. 60 seconds for the stage. Only first round scores. You get two follow-up rounds to figure out what went wrong if you want, but they do not score.
Shooting positions are prone, shooting off packs, sitting, offhand, fence posts, etc. Shooting around or over brush, logs, etc. No tripods. No padding yourself with bags, etc. Some stages allow no supports of any kind. Must carry all gear between stages.
Targets are animal shaped up to Wapiti/Elk sized. They are made of rubber, but the kill zone is a steel plate of appropriate size (6" to 12") and painted same color as the animal. Only hitting the plate counts. Gut shots make you cry and score nothing. Ranges are 100 to 800+ yards.
On 20 targets, extremely good shooters will do 18+. Average is in the 7-10 range if wind isn't too bad. Last match the wind was ferocious so averages probably closer to 5-7 out of 20.
For testing yourself, I keep it dead simple. Start standing with gear. You have 60 seconds to get into designated position you are practicing (sitting, pack shoot, etc). and get off a shot on 6-8" plate. Keep going back further until you can't consistently hit that plate. That is your max distance in that position.
If you want to add more excitement, run 100 yards into the position then start the timer so you are winded when making the shot.