Before I begin: I DID NOT FIRE A .22 IN A .17!!! If you accuse me of doing so in the comments, I will proceed to call you an idiot for not reading the original post. Anyways, my uncle has a .17 HMR rifle, nice gun, looks great, shoots fine, blah blah blah. So recently, he let someone borrow it. They apparently mistook it as a .22, and chambered and FIRED a .22lr in it. It didn't explode, the bullet was badly disfigured, and didn't make it out the barrel. He managed to get the bullet out the barrel, but I figured he should take it to a gunsmith and have the head spacing, chamber, and integrity CAREFULLY checked. Anything else that he should have looked at?