Originally Posted by
HEAD0001
Ron I read your post three times. But I don't understand. Why did you do this?? Were you wearing out the factory breech plug with 100 shots?? Is that what you are saying??
I guess so, but i don't believe it was totally worn out.
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I assume by showing the nicked up bit that you are trying to say how hard the steel is in the breech plug??
Not so much in the plug itself, but in the brazed vent liner
How many shots do you get from the screw in place??
The breech plug with the brazed vent liner was fired 106 shots, but i am sure i could have used it more. I chose not to because i have read on these forum, that 0.035" flash hole is where accuracy starts to degrade.
If you mean the home made vent liner i am now using, i haven't any data at all in this breech plug. Shooting will commence in the morning, unless it is raining. In other breech plugs and uses, the Holo-Krome screws made into vent liners seem to erode about the same as any other breech plug, or these Knight breech plug. The difference is the screws cost me some less than $0.20 each, and i can make 20 or more vent liner with one drill which cost me about $3. These home made vent liner end up costing me about $0.35 each. Starting with a flash hole size of 0.028" may give these home made vent liner a life of 200 shots before they erode to 0.035". Time will tell.
Just trying to understand.
You and me both. I am just trying to understand.
Thanks, Tom.
It seems that hardness does not equate to erosion resistance. When i made vent liner from stainless steel screw, they didn't seem to be as hard as Lehigh vent liner, but they are far more resistant to erosion when used as a vent liner. The Holo-Krome screws i am now using seem to resist erosion as well as the Lehigh vent liner in these Knight breech plug, but they aren't near as hard. Nothing i have worked with has been as erosion resistant as stainless steel, but them screws are so very hard to drill, i decided to use Holo-Krome for my own personal use.
To make one vent liner from stainless steel screw might take 1 drill, and 1 screw, or 5 drill, and 5 screw, depending on luck or perhaps how i hold my mouth.
I can make 20 vent liner from 20 Holo-Krome screw using just 1 #70 drill.