I've been reading about the push in breech plug for the H&R Huntsman. The breech plug in the gun I just got does not have the two holes around the nipple, so it's not a screw in plug. Apparently, you knock the plug out from the muzzle end with a wooden dowel. Does that sound right?
I removed the barrel and made sure it wasn't loaded. This is the plug that can blow out the breech if you open it after a hangfire...or so the story goes.