Dug up this old thread searching for info to install a Savage vent liner in my Triumph breech plug. My old plug is worn. I'll purchase a new plug, but I would like to give the vent liner installation a go, on the old one.

I have ordered vent liners form PR bullets.

What I'm after is the bevel angle on the Savage vent liners, are they the same 82 degrees as the Lehighs, that I see mentioned used in other modifications?