It won't hurt anything, but those light bullets will probably only print a 4 inch group at 50 yards. Everything will be erratic as far as grouping goes.
Considering all the 1-in-12 rifles still out there, maybe you can swap with someone who can use them. You won't get much satisfaction, other than making noise, and then having to clean your weapon.
A 4 inch group is not too bad for me, right now. Especially with just a red dot sight on my scope. We’ll upgrade me to a nice highpowered scope one of these days but until then I’m going to be a little inaccurate.