What action are these barrels chambered for?

[Mordamer]

I bought 2 chambered barrels on a whim. The seller had very little information on what they were for. What I do know is that they are both labeled as Kreiger barrels chambered in 6 PPC. They came from the seller in nice barrel bags embroidered with "Jay Sperry" and "Jerry's Gun Shop". Neither appear to have ever been fired.

Here are the measurements I took on one barrel tennon:
Tennon Length=1.039"
18 Threads Per Inch
Major thread diameter=1.056"
Pitch diameter=1.022"
Conical recess cut for a coned bolt head. I estimate the cone to be 20 degrees, but don't have a good way to measure this easily. (I could put one in the lathe and check the angle with dial indicator on the compound if I had to)
Both barrels appear to have 1.5 turns of rifling in 21 inches for a 1:14 twist and both have 4 grooves.

What action are these likely threaded and chambered for?

 

[GenePoole]

I would guess Stiller:

http://www.viperactions.com/files/viper_tenonB.pdf

Although they claim 1.0625x18, every one I've done would not fit the action at that size (over wires). All of them had to be turned down to about 1.059 to fit the actions.

 

[Mark Buettgen]

Hey Guys,
Jay was a Benchrest shooter from Wisc. who shot a lot at the Minnetonka range, Super Shoot and Nationals. He even shot a World Record
in the Unlimted class for 200yd group.
The Barrels would be 6PPC's that Jerry Simison would have chambered. Jerry passed away a few years ago but was one of the BEST!
They would have been chambered for a BAT action and the cone angle is 25 deg.

Latter, Mark Buettgen
Bartlein Barrels Inc.

 

[Mordamer]

Thank you for the info Mark. I found Jay's name on some of the National Bench Rest Shooters match lists.