Hey Guys, I want to clarify before I post my question that this isn't a problem I'm trying to solve; more that I'm wondering if my observations are consistent with what others have seen. That said, I've got a 6.5CM Krieger with ~2,400 rounds on it. The barrel continues to shoot really well, however by round count alone it's obviously nearing the end of its useful 'competitive' life. I've had to do all the usual things to keep the rifle in tune; I'm up on charge weight about .5gr, and the throat has grown .040" the last time I took a measurement. Tonight I got some free time on my hands so I decided to clean it up, and I happened to have my bore-scope out; after giving it the usual cleaning I scoped it (last time I scoped it was probably at the 200 round mark) and I noticed something interesting. I didn't observe much of any 'fire cracking' that I would expect to see with this many rounds, however it looks as though the rifling is just 'gone' from a decent portion of the throat (maybe 1"); it's actually difficult to tell rifling had ever been there. This leads me to my question...is it common to see barrels that have worn away rifling in the throat, but not to see fire cracking/chucks of metal missing from the rifling? For what it's worth, it lived off a diet of H4350 almost exclusively.