Thread: Ring/groove at base of case shoulder

Yep, although I wonder if bit more than a polish as it is a groove...looked through bore scope and could see it.

Sorry, I thought the cartidge had the groove. If its the chamber with a recess I would take it to a good gunsmith to make sure it is not a crack and then get his opinion on rechambering if safe. If you bought the rifle new and it has been doing this since brand new with commercial loads then kimber should become involved. Gunsmith examination in the first instance.

Dropped of to the gunsmith for a good polish...thinks swarf may have got caught when barrel was cut (or something like that) and happened at production. Is contacting agent.

Originally Posted by Marty Henry

This is how the experts do it, whatever it is

I am good at that

Action closed...albeit stiffly...on the no go gauge but not on the field no go. So safe to shoot but at the edge... going to run reamer in chamber to see if burr comes off.

Then look to shift to neck sizing.

Originally Posted by Tikka7mm08

Dropped of to the gunsmith for a good polish...thinks swarf may have got caught when barrel was cut (or something like that) and happened at production. Is contacting agent.

Welll, bit hard to imagine this would simply be from a pickup during chambering. You'd expect the material to be partially round the periphery, not a solid ridge like the pics suggest. Not good QC either way if it left the factory like that.

not a huge issue if it does close on a nogo guage as long as you reload,and dont shoot factory loads...you just have a .308 and a bit..a nearly 30/06 if you take it to extreme and reem it another mm or 2 longer....

That's a bugger. Hopefully the chamber can be cleaned up.

Who was it that suggested out with the hacksaw and internally inspect? Bit dear on a chamber though, but I still say it's worth it for the education of the great unwashed on here!!!!!!!

Originally Posted by No.3

Who was it that suggested out with the hacksaw and internally inspect? Bit dear on a chamber though, but I still say it's worth it for the education of the great unwashed on here!!!!!!!

He was suggesting hacksawing a case in half, not the chamber!

Had covid all week so get rifle back Monday.

Got a Lee collet neck size die...gotta say Lee stuff is well made, had a few things from them now.


Sent from my SM-G998B using Tapatalk

beauty...definately nothing going on internally there.
if you just happen to have one thats going in the web area...slice it open and post up a photo please...it would be great to have one stuck somewhere for reference when its talked about.

A lot better but still can be seen.

Going to fire new cases and size with Lee neck collet sizer. Once fired case on left.



Sent from my SM-G998B using Tapatalk

Certainly perplexing!

Sent from my SM-G975F using Tapatalk