I had a Superten Carbine in .177, with only a 200 BAR bottle and filling to 180 BAR I only got about 50 shots per fill before it came off the reg. I have to say that I really did not like the gun at all. I also had a AA S400 which was (and still is) a much more accurate gun that only needs 170 BAR in a tube about half the volume of the BSA for the same number of more accurate shots!

Alan