ORIGINAL: cayugad
that's an interesting problem. Have any of the Omega and Encore owners on this forum experienced this? I just checked my rifles and they are fine.
Actually, I think I am

You can substitute my Encore's breechplug for the one shown. I got the same cutting and oblong hole. My accuracy has recently went south too. Actually heading back to Gander MT tonight. I got 1 year free gunsmithing service for my Encore when I bought it. Hope I'll walk out with a new (and free) breechplug.