As Ron stated it will work very well with BH, but the original Omega plug has a 1/8" flash channel and will plug with a hard carbon fairly rapidly. For hunting it is great but if you do extended range sessions you may experiance hang fires after as little as 8 to ten shots, depending on the primer you choose to use.

I have opened all my Omega plugs with a #21 bit, just slightly greater than 5/32", the increase in flame channel diameter serves a couple of purposes, it allows the increase of volume the flash channel can handle and it increases the number of shots that can be shot before cleaning is necessary. With the addition of the reversed dome shaped Lehigh vent liner it further reduces the collection of blow back and carbon build up in the flash channel. The reversed dome sheds some of the blow back off to the sides of the liner and reduces the direct surface area that funnels blow back back into the breech plug.

When i was shooting a factory Omega/Encore breech plug I would try to remember to hand spin a 1/8" drill bit every 8-10 shots. This seemed to insured consistency from shot to shot.

In this picture you can see the increased size of the flame channel to allow better breating for the primer... This plug is drilled all the way out and tapped to allow installation of a hardened vent liner.



This picture shows the two type of vent liners that can be installed. I tried both the flat top and the dome and found the dome to provide a cleaner longer lasting plug over a range session.



In this picture you might be able to see the start of the carbon build up in a factory Knight plug.



But again if you are only an occasional shooter the factory Omega/Encore plug should serve you well as long as you do the maintenance on the channel...