Going through a box of old pellets(some probably 10 years old) I found some weird stuff. Some russian brand pellets that seem super hard and some crossman penetrators which are the ones that are poly around the base and sides and has a hard alloy pointed tip sabot type deal within. Is there any way these would hurt rifleing? I know these uglies won't be accurate but my curiosity is there. I just want to see what they will do to some wood really lol. Maybe try to punch some holes in coins. I only had break barrels when I purchased these things long ago.