Rifle Bore Machining Marks

[rckendall]

I bore scoped my new rifle a couple days ago to see how well my cleaning was doing. To my surprise, I see machining marks in the bore that look like tool chatter. I'm at a loss as to what to think or do about it, and I would like to hear from some of you guys prior to contacting the manufacturer. The rifle is an Armalite AR-50 in 50 BMG.

Thanks,
Richard

 

[paperpuncher]

Not uncommon in factory rifle barrels. If it was mine I would just shoot it

 

[edwardware]

That would appear to be a better than average commercially produced bore. I'd be delighted if every commercial barrel I own looked that well finished.

My custom hand-lapped aftermarket barrels are prettier, but they also cost more than the rest of gun did.

 

[rckendall]

Thank you for your replies, and I will just continue to shoot it. In the case of these rifles, 50 BMG, even custom barrels don't cost as much as the rifle itself, and $800 is the number I hear mentioned regarding a new barrel! Not cheap to buy or shoot, but fun.

Richard

 

[CharlieNC]

No where close to the railroad track bores in Savages, and they still shoot well. I always cringe looking at my custom barrels with the bore scope too.

 

[DaveTooley]

Reamer marks ironed out with the rifling button. Very common.