Digging through the attic over my garage I found an old tin of .22LR ammo (about 300 rounds) and an ammo box full of 9mm ammo. The .22LR could be from around 1976, the 9mm from around 1999. The 9mm looks to be in good condition, the .22LR the lead bullets appear oxidized and are rough to the touch, leading me to suspect they could cause feed problems. With the current scarcity of .22LR ammo, would this be salvageable? Just wondering if I took and touched the tips to a low speed buffer to remove the oxidation if they would still be usable? Also, would the 9mm still be safe to use? Obviously, the 9mm has more energy than the .22LR, so my concern would be reliability. Any thoughts? Advice? If usable, I plane on using these for range ammo. Thanks...