Winchester 40gr FMJ 22 Magnum Ammo Accuracy Test

I test the accuracy of the Winchester 40gr FMJ 22 WMR ammo at 50 and 100 yards using both my Ruger American Rimfire and CZ 457 rifles. Both have the identical Leupold 3-7x33 VX-Freedom rimfire optics and a timney trigger. Some very interesting results. What's your favourite 22 magnum ammo, CCI, Remington, Armscor, Hornady, Federal or something else?