AR-Stoner 6.5 Grendel barrel short chambered.

[Tedward]

Did you ask Satern how the chambers of Liberty barrels differ from those of their Satern-brand cut-rifled barrels? Is it the same reamer, or a different one? Same procedure, or a different one? Was Satern using an AA reamer when a business relationship existed between the two companies, and Satern now uses a different reamer, or a different type from a different supplier?

I ask these questions because I've never seen a complaint regarding Satern cut-rifled barrels. I think it would be interesting to know, from a manufacturing perspective, how the chambers differ between their cut-rifled and button-rifled barrels. It would seem that the chambers are cut differently, or something changed along the way at some point. But that's just speculation in an effort to understand the reported issues...

ETA- Are Satern and Liberty barrels made under the same roof, or different locations? Also, if the reamers and / or techniques are different, it would be interesting to use the "Satern" reamer / technique on a Liberty barrel, then examine the results.

Steve said he sands to 180 grit to remove the machining marks and that's it. Yes he could polish it and spend more time but it will cost more. He didn't say if it was the same reamer used on the button cut as the rifle cut so I'll ask that on Monday.

The print I was looking at is the JGS copy and it has AA's name in the left corner. I tried to upload it but the system here won't let it for some reason. I emptied almost all of my pictures and it still wont work. It matches the one J.A. Smith put the link up on.

AA never made a reamer, they had them made just like Satern has them made today, by PPG. Steve has been talking to Dave Kiff at PPG. You will hear more next week because this is not the end of the topic for Satern. Steve knows what your looking at and said the barrels need broke in and it will be fine. They use a go/no-go gauge on every chamber and the issue you think there seeing is the throat being tight.

All I can do is tell you what he said today and he is very confident if you drop the bolt catch, it will chamber and fire. Then it will break in and get looser. It takes at least 25 rounds on a match barrel till a barrel is even broke in and not being hand lapped, you need to run more ammo to get it working smoothly.