I must confess .22 Magnums have been something to a mystery to me over the years--and apparently to others as well. I've owned a bunch of .22LR rifles and they all have shot at least decently with a wide variety of ammo, and I can't remember one scattering shots all over. Same with .17 rimfires.
But every .22 Magnum I've shot (including one Volquartsen) has shown decided preferences for one or two brands, and very rarely have they shot every kind of ammo reasonably. I'm guessing it can't be an ammo problem, because some will shoot one brand into tiny groups, while another rifle will scatter the same load all over.
Consequently I keep a number of sample loads on hand, to see what a new-to-me rifle might like.
