Boyd Allen
Active member
I have been doing a little measuring and math, trying out some tools for the first time for this task. I pulled the barrel from a DGA in 6PPC that has a flat bolt face, and measured the action and tenon, then I took the same measurements from a Panda barrel. It looks to me like the threads are within a half a thou. of each other in pitch diameter, and the depth of the cone, to the edge of the chamber is very close to the same as how far the go gauge sticks out of the back of the DGA barrel. What it comes down to is that if I cut the cone off of the Panda barrel ( with a die in place to straighten the end of the threads, and come up with a ground spacer that is .092 thick. I should be able to have a barrel that fits both. The only time that my flat bolt face DGA has a feeding problem is when I want to feed an empty case, which means that for shooting, the cone is not needed. I remember reading that someone wrote that DGA threads are oversize from 1.062 nominal, guessing that that was need to clean up the casting. I think that 1.075 was mentioned. Well, mine isn't, and the barrel threads are about as snug, threading into the action as I would want. Next, I plan on measuring a BAT tenon, from a barrel that I have on hand, and seeing if another spacer would let that work on a panda, and by cutting off the cone, and using a third spacer, be able to safely use a single barrel on a Panda, Saguaro, DGA. and BAT. Should make for an interesting test, if I get the chance.