Good plan, try some 50-grain Federal Gameshok if you can find any...
I've had good luck with it in my Grendels
For those who dunno...Grendel is the fore-runner of Keltec.
Both companies created and run by George KellGren.
99% of all weapon designs for those two companies were created by him.
And he's one of the FEW that got .22WMR semi-autos RIGHT!

Marlin 922M & H&R 700 being two other rifles that got it right as well.
Keep 'em clean like you would an AR15, as in,
after each range visit/hunting trip where you fire a round or thirty.
Boxes O' Fun
Grendel P-30 & R-30
I'll eventually end up with a PMR30 & hopefully an RMR 30...
but only at under MSRP...I have huge issues paying over $300 for any rimfire...