I tested my hit indicator housing last weekend, and it worked fine. Side note, 338lm will throw one right off the back of a 10", 3/8" thick plate by about 5ft at 525yds pretty easily, even with a monster rare earth magnet holding it on the back of the plate.
(It was fine when I picked it up and slid the angled reflector back into the housing)
I can't imagine this wouldn't hold up to 22lr without an issue.
I can't imagine this wouldn't hold up to 22lr without an issue.