I don't know about AR15 300 blk, only used the bolt action rifle in subsonic's, shot only 2 deer and 5 pigs all head and neck shot at no more that 60m. Subs are grate for knocking a few goats over on the way to your favourite deer hotspot without a sound. Easy to make brass for and reloading too. Have not reloaded in supersonics yet but would think it would be similar to a 223 in noise and performance within 200m. I do like the idea of a AR blackout the fun factor and with the ability to double tap shots and after all its 2 guns in 1, subs and supers. win win. One thing about hunting with an AR they noisy when in tight bush and cocking them when in the zone compared to a bolt action.
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