I have an Umarex Smith & Wesson, 4" and 6" barrels and would ssy that you'd be doing well to get 8 pellets in the black, offhand at 10m. Whether or not the gun could put 8 in the 8 from a vice, I don't know. That said, it's pretty satisfying to shoot, either single or double action and goes off with quite a crack - enough to make the neighbours wonder!