Re: SUB-SONIC / CYCLONE AND TRAIL BOSS LOADINGS ?
Take a look in the reloading section, there are tons of recipe's for sub loads. Me personally I like Hornady 180gr RN behind 10.6gr of TB. They stabilize well out of 20" barrel.
I would suggest that when you do development, leave the suppressor off and use a chrony to get your velocity. Also work down with your loads. Once you get your velocity where you want it, shoot some 25yd targets and look for keyholes. If you are GTG, slap on the suppressor and have fun.