I shoot two of those no-longer-available 10/22 magnums. One of them has the factory barrel. The other has a Green Mountain .920 fluted stainless barrel. Both have had trigger mods and aftermarket hammer and recoil springs. The both shoot very well. I also have a Ruger American Rimfire in .22 WMR which is a regular addition to the prairie dog battery. All of them seem to prefer the Hornady 30 gr VMax loads.
My Marlin 782 is quite an accurate gun and I enjoy shooting it. My other 22 mag is a Colt Trooper Mark III in satin stainless. Nice revolver to target shoot and squirrel hunt with.