Ken,

It was never mentioned before in this thread, but your link to Holo-Krome screws was used as a start to make vent liner for this rifle. The plug now in this rifle had a vent liner, but it was brazed in; when the flash hole reached 0.035" it was removed. It was tough going, but now the vent liner can readily be removed and replaced as it erodes. Our local machine shop orders them Holo-Krome for me. Holo-Krome screws made in the USA, sold by a local retailer, and drilled by an old carpenter from South Dakota are the vent liner in all my rifle.

Thank you for your help, and encouragement!!