Testing 25 types of .22LR ammo in a CZ 457 LRP

In the last few years, during my travels, i bought at least one box of any kind of .22LR ammo i found. I managed to collect 25 different types. 

So i tested them all in my CZ 457 LRP – stock from the factory. No modifications or adjustments.

I shot at 50 yards – 46 meters. 5 fouling shots on the lower right cross and then 20 shots on the upper left cross. I aimed at the center of the cross but the scope was dialed so that the shots hit lower and to the right as to not destroy the aiming mark.

In the shooting process i did not touch the rifle at all, only pulled slowly at the trigger. I filmed the routine for the initial sighting shots.

I measured the group size with the Ballistic-X phone app and measured the speed with a Caldwell Chronograph.

For some high end brands, i noticed that the first shot or the first two shots were off and the rifle needed adjustment after the shot  but afterwards all the shots were landing in the same hole. 

Results table at the end with sorting alphabetically, by group size and by standard deviation.