Originally Posted by ronlaughlin

The adapter hole is about 0.082". The flame channel is OEM--0.125"

The new diameter of the primer pocket which allows the adapters is 0.282".

As mentioned before the new diameter of the flash hole is 0.034".

The depth of the primer pocket is kinda tricky, but not really. It has to be deep enough to allow the action of the Omega to close on the adapter plus the o-ring which is 1.5mm thick, but not so deep the primer doesn't fire when struck by the firing pin. What i guessed at the second time is about half the thickness of the o-ring. The first plug i drilled, i drilled too deep, and so didn't get reliable primer ignition when struck by the firing pin.

The 0-ring needs to be hard enough when compressed to hold the primer so it ignites when struck by the firing pin, but loose enough to allow the action to close with reasonable pressure. That seems to be about half the thickness of the o-ring--0.75mm.

The depth of the primer pocket on the plug purchased from PR Bullet is exactly the same as the OEM TC plug. Neither utilizes an o-ring.