I've had a couple of Mossberg 640k Chucksters and both shot good with WW FMJ and JHP loads. Now days I use a Marlin 882 ss that I put an old K4 on with super fine crosshairs and dot reticle. It shoots WW JHP and FMJ ammo ok, but the Hornady 30 gr V Max load is simply outstanding. Only ammo for the 22WMR that I considered worthless was WW Dynapoints that are a plated lead hp, they sure leaded the heck out of my Marlin in short order.I've allways had good luck in plain and plated Dynapoints in the 22Lr though. Magnum Man