ALL
Not that it matters, my Remingtons and the A&H all have concave, dished out, faces on the breech plug. I know a lot of the modifications the Encore/Omega breech plug has gone through are to alleviate Underclocks infamous "Crud Ring" withT7. With these concaves I do not get the "Crud Ring" but I am shooting loose T7. There is some specualtion that TC will unvail another breech plug at the "Shot Show" coming up soon.