Just got to really shoot mine a good amount today. Loaded with J bullets. It shot pretty good at 50. Haven't measured yet, but less than an inch at 50 if I throw out the called fliers. Loaded with 1680 and either 208gr AMAX or 225gr BTHP. Got to drop my load just a tad as most were just supersonic in my rifle with a can on it. I had three I had loaded with 190gr Hornady spritzers over a charge of RL7 just to test for function etc. Those sounded like a pellet rifle and cycled my carbine gassed action with bolt lock back on the last shot. I like the round and really like the quiet of having a can on the end. I really am of the opinion that every firearm sold should come with one as standard equipment.
ETA: Factory Rem subs don't shoot worth a darn in my rifle. Not accurate at all and often have a fail to feed and not lock back the bolt.