I would say that it is barrel depndent. I have heard so many people go on about Bisely Magnums but this one does not work in my barrel. 1" grouping at best at 30 yards. You really need to test the pellets.
I find the best grouping 3/8" at 40 yrads with exact 4.53 and even beter with the expensive JSB Premiums 4.52 but these cost the same price of a .22 LR round and are out of my leaguge.
The JSB heavies are also good but not as good as the exacts. The other pellet that I found accurate upto 40 yards was the H and N Hunter Xtreme. 3/4" at 40 yards or so. I have also had good success with the old Defiant HFT Specials. But as a whole I have setteld on the Exact 4.53s for genral target and plinking.
A.G