My 77/22 magnum has done well with the 40gr Wincester JHP stuff. A few weeks ago, with fading light, I shot about a .8 inch 5 shot 106 yard group with CCI Maxi Mag +V.
https://www.cci-ammunition.com/rimfire/cci/maxi-mag_-v/6-59.html I haven't been able to get back out to see if this may have been a fluke. When some becomes available, it'd be worth a try.
Our local Academy had some (large quantity) 22 magnum last time I strolled through. Can't remember what it was. CCI 30 gr polymer is sticking in my mind.
