Welcome to the world of rimfire, sadly you will have to buy a bunch of the small 50 round boxes of .22 ammo and see what works best for the rifle.
A lot of .22's are finicky like this, so get it out to the range or bush and see what does not jam in it.
Warning, holding the magazine while firing can cause feeding issues (Manual even alerts you to this).
There may also be random sticky points in the mag when loading it, these are just casting marks that will smooth out the more you load and unload your magazines.
Enjoy your rifle.