Gunsmithing Identifying Threads on Barrel to Specific Action

[BWN]

As the title says...

Is there a way to identify what action a barrel is threaded for, barring have multiple guns to test them out on?

A guy I know bought out a local gunsmith's stock. Most were factory take-offs, but there were 3 customs with no maker. Only caliber.

2x 6.5x84 and 1x .223 Ackley Improved. I can post whatever angles/pics if y'all know the best ones to take . I didn't want to upload a bunch of pics that wouldn't help identify them.

 

[XLR308]

O.D. micrometer or good caliper, thread gauges, some actions are flat faced bolt some are coned.
Some barrels have a recess for the face of the bolt like rem700 does.

 

[BWN]

I've got a good Fowler micrometer. No thread gushes though.

I went ahead and attached some pics. The two together are the 6.5's. The single is .223.

One of the 6.5s does have this stamp. I can make it out real well though. Maybe just the gunsmith?

 

[fdkay]

What's the OD of the threads and the length of the tenon?

 

[FisherT&C]

At first glance they look like Mauser 98s
If they have 55 degree threads at 12 threads per inch. That's probably what they are, and there are different sizes of Mausers. They look used so they were probably kept around as scrap stock to use to make things like muzzle brakes, thread protectors or even dies.

 

[BWN]

Matte 6.5: OD 1", Tenon .70
Blue 6.5: .99-1", Tenon .71

.223: .85, Tenon .81

 

[BWN]

At first glance they look like Mauser 98s
If they have 55 degree threads at 12 threads per inch. That's probably what they are, and there are different sizes of Mausers. They look used so they were probably kept around as scrap stock to use to make things like muzzle brakes, thread protectors or even dies.

I'm guessing by the dimensions, both of the 6.5s are the same action. One is a little longer than the other and different finish.

 

[RTH1800]

Used 6.5x284 barrels? Not going to matter what they fit.