Pete and Snuffer,
Good evening! Every rimfire firearm seems to have it's own peculiar likes and dislikes for ammo! My Handi seems to like everything with Winchester on the label, but hates everything with CCI! I buy a box of each different type of .22WMR I run across for testing.
I'm starting to buy more .22LR again too! With the cost of .22LR going up, I figure I might as well match some good stuff to each gun. I'm loaded with bulk packs for plinking, but for hunting I like consistent accuracy.
I have a Marlin 780 bolt action in .22LR that used to LOVE American Eagle 40gr back when they were the cheapest ammo to get. I haven't bought any of that in over 15 years. I just mounted a new BSA Sweet 22 scope on it and will be testing a variety of ammos out of it to get the best match. The most I've shot it hunting was about 350rds in a day and a half of gopher shooting. Considering I can shoot up a brick or more in an afternoon with the 10/22's, it'll be worth it to wring out all the potential of the Marlin/BSA combo.
So testing a variety of ammos can make a difference. I've seen some good ones at 25yds that didn't do so well at 50 and vice versa. I chrono all the types and look for consistent velocities as well as group sizes.
Good luck and have fun!