There are two things I would like to know from someone who has done tests themselves or can link me someone else's. 1) Stock accuracy performance from 50-200 ft. Preferably grouping details. 2) Accuracy after Air-brake mod, EdGI Custom 6.01mm Bull Barrel (435mm), teflon tape mods in various places, nineball/firefly hard bucking and m150 spring upgrade with piston and guide. Suggestions for another combination of mods mods are also ok, but keep in mind the price range of these upgrades is the maximum I'm willing to spend (around $100). So grouping details for these as well if possible.