Endeavour (Encore) .50 Breech Plug

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Well-Known Member
Oct 4, 2019
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Just got a used Endeavour barrel for my 6th Encore (3rd Pro Hunter) I’ve owned. Anyhow this barrel came with a spare used breech plug. The spare plug flash channel was almost plugged completely and took multiple drill bit sizes to get it cleaned out and finally accept a 1/8” bit. This plug has a flash hole of 0.054” in size. The plug in the barrel wasn’t as bad in the flash channel and flash hole of 0.033”. Both measured with pin gauges.
My questions…
Can these speed breech plugs be modified to fit a liner effectively?
Anybody have a contact for new plugs in Canada?
With a load of 90g Pyro P and saboted projectile in the 240gr-300gr, how much further life can I expect from the current plug?
Thanks all