I have a Bmag and have had it for a couple of months.
Accuracy is good, not great.
The 25 gr is more accurate in my rifle than the faster 20gr.
The rotary magazine is junky and doesn't feed reliably.
The rifle is pretty rough around the edges.
The accutrigger takes a little getting used to but it is at least adjustable. I have it on the lightest setting.
I have shot a few armadillos with it. It makes them pop.
It shoots pretty flat for a rimfire. No hold over at 100yds.

I wish someone would come out with a better looking and functioning rifle. Maybe like Ruger's .17 that looks like a Model 77. Also, would someone please make an aftermarket magazine that works??