I was at a indoor 40 yard range with the Savage Bmag today. Sighted in the scope and tried a few first five shot groups. The groups varied from .592 to 1.541 inches with flyers or scattered like a shotgun pattern. The magazine is a learning curve to load. Didn't have any misfires or ejection problems but there is no consistent force opening the bolt after each shot. Sometimes it felt like the chamber was empty and other times I had to use really hard force to open the bolt which tells me that someone may be using the same machine to load powder for nail guns and rifle cartridges, or the brass is totally inconsistent.
By pure luck one group of five shots which was .592 inches must have been matched brass, powder and bullet. I don't have a reloading scale, sure would like to weigh some fired brass and loaded rounds to see what's going on. Anyway hopefully somebody else starts making ammo for the Super Mag rim fire. I'm not giving up on this rifle just yet, I'm thinking the gun has more accuracy potential with better ammo and stock. I've read on other sites there is a blaming game going on, Savage blames the ammo and Winchester blames the Bmags. I free floated the barrel. If you don't take out enough plastic just the weight of the barrel and action will push that flimsy stock up to touch the barrel. Savage sure messed up with that piece of plastic for a stock. Anyway, for $299 what does one expect after shooting Anschutz or Cooper rifles. It's great for bouncing milk jugs around at this point.