answered

[swiftone]

answered

[ar15barrels]

Is the barrel nitrided, melonited or treated with any other type of process to give a really hard surface?

[ar15barrels]

Nope.

I can do it then.

If the barrel was Salt Bath Nitrided or any other process that hardens the surface, then you are going to have a much harder time getting someone to do it as the hardened surfaces damage tooling.

Many CMMG barrels DO have a hard surface treatment.
As an example, all 3 series of banshee's have SBN finished barrels:

https://cmmginc.com/product-category/banshee/banshee-100-series/?orderby=popularity

https://cmmginc.com/product-category/banshee/banshee-200-series/?orderby=popularity

https://cmmginc.com/product-category/banshee/banshee-300-series/?orderby=popularity

Post a link to the exact barrel you have.

[rdtompki]

Well shoot - I did not know what SBN stood for in the description prior to this. Learned something new today.

Looks like I am stuck. Darn it.

Check out CMMG threads on the PCC AR15.com subforum. There are folks with the proper tool to fix this problem. OTOH, if you're using a Redding competition seating die it's very easy to tweak the OAL although since you're not using coated load you don't have the possibility of color coding your bullets.

[ar15barrels]

Check out CMMG threads on the PCC AR15.com subforum.
There are folks with the proper tool to fix this problem.

Carbide tooling is the answer.
It's just expensive and therefore much less common.