Seafire - each gun is a law unto itself. Plus, what is "accurate" to you may not be to me ... and vice versa. I've never had as much success with 55s in general as I have with lighter bullets from 50 grains on down in any of the .22 calibers. .223s with a 1-12" twist are less bad than the bigger cases with 1-14" twists but still not been happy.
MarkD - I don't know about dirty. It's got half again the muzzle flash and shock wave of anything else I've used. You want abuse, try slightly reduced H335 loads in a bigger case like a .22-250. Egad.
