Vintage Canvas: I should also have noted, I adjust my .22Hornet FL sizing die so only 3/16" of the case neck is sized. This kinda leaves the look of having 2 shoulders, one larger than the other. It helps with case capacity as well as accuracy as the case is more properly aligned in THAT chamber.
Seemingly little things are what makes a difference.
My first CZ .22 Hornet preferred pistol primers, while the second one did not care. Guns are different, even the same models from the same manufacturer.