Here are the 3 breech plugs. starting from the left #1 was original that came in my Encore which is just about flat. #2 is widedeep dish and #3 is the one thatI just pulled out of my new Omega I got that hasn't been fired yet. So that is atleast 3 different plugs. The flat on#3 is 1/8" wide which would supportpellets better.