My sister just got a 99 in 250-3000 from our dad. Had had cancer in 2001 (still a survivor) and hadn't touched most of his guns since. We scrubbed inside and out though it looked pretty nice, aka not pitted/rusty. Problem: cartridges won't seat in the chamber easily, like it should. They feed nicely until the very end, then binds. I re-scrubbed & tried again. Same thing. So I worked the cartridge in lightly til it started to bind then retracted it, repeated 4 or 5 times to see if I could detect a scratch on the bullet. When I inspected for a scratch, the bullet had been forced into the case about 3/16". My sister tried the same thing once and the bullet stuck, case ejected spilling powder. Factory ammo. The guy I work for at the steel shop says it's possible for the tiny-est rust spot MAY have created a burr not easily visible from the muzzle with a bore-light. Anyone here run into this issue? Fix???