Rings Around Case Shoulder

[General RE LEE]

Any explanation what these rings are around my Nosler case shoulder on my 7mm STW? I full length resize and bump shoulder back .002. I use Lee Pacesetter die

Note the 7mm STW shoulder.

 

[Hondo64d]

My guess would be rough reamer cutting the die.

John

 

[nmbarta]

rough chamber, looks like it could be polished out. Shouldn't cause any real problems there, if that's on the case wall it can be a bugger. That part of the reamer does the bulk of the cutting, I wouldn't worry much about it, but it would bug me for sure.

 

[Bob Wright]

Bore scope it? I agree with above. Rough cutter, but if it shoots good, then it's just annoying.
It's getting resized more at the body/shoulder and leaving a witness mark in the process.
I would measure brass before and after sizing there, just out of curiosity.

 

[soewe812]

My lee dies cause the same marks. Doesn't seem to cause any issues.

 

[General RE LEE]

My lee dies cause the same marks. Doesn't seem to cause any issues.

I guess a $30 die can't be perfect lol

 

[Elk Hunter 338]

Buy Better dies!

 

[FEENIX]

I guess a $30 die can't be perfect lol

I have a Lee dies in 7MM STW also but never have issues as you have. It seems like you are having all kinds of challenges with your STW build. As noted in #2 and 3, better dies will not resolve your issue if this is the case. "If" it is a reamer issue, allow the gunsmith to make it right, then find a better gunsmith for future projects.

 

[morgaj1]

I have occasionally seen that with a Lee sizing die. I would contact them and they should hone or replace that die.

 

[nkyshooter]

First - let me just say, I love Lee Precision products ... especially their collet neck sizer. That being said, I would never claim they are the "high quality" choice ...

I had rings like this appearing upon FIRING as opposed to resizing ... it was due to a rough chamber that needed to be polished. If this is occurring upon RESIZING, then I'd bet this is due to a rough die that needs to be polished.

This is a tool that might help you out not only for this die but other similar needs (i.e. chamber polishing, etc) ...

Flex-Hone Rifle Chamber Hone 50 BMG 12 800 Grit

This hone features a twisted steel wire shaft with abrasive globules on flexible nylon filaments. It allows you to remove any imperfections or machining...

ads.midwayusa.com

Sorry to post a link from the pirates at midway ... but google it and I am sure you can find it from a seller that has some honor in their bones ...

 

[MW204]

First - let me just say, I love Lee Precision products ... especially their collet neck sizer. That being said, I would never claim they are the "high quality" choice ...

I had rings like this appearing upon FIRING as opposed to resizing ... it was due to a rough chamber that needed to be polished. If this is occurring upon RESIZING, then I'd bet this is due to a rough die that needs to be polished.

This is a tool that might help you out not only for this die but other similar needs (i.e. chamber polishing, etc) ...

Flex-Hone Rifle Chamber Hone 50 BMG 12 800 Grit

This hone features a twisted steel wire shaft with abrasive globules on flexible nylon filaments. It allows you to remove any imperfections or machining...

ads.midwayusa.com

Sorry to post a link from the pirates at midway ... but google it and I am sure you can find it from a seller that has some honor in their bones ...

Pirates at midway, love that as old larry potterfield has a very short memory who made him a millionaire. I still get stung by the pirate from midwayusa but only as a last resort does the pirate get a penny from me.