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Measuring Lock Time of Actions...

"If the bolt shroud is not hardened enough where the firing pin rides, and if the firing pin is not 40-42 RC, it will cause increased friction, therefore drag."

Did you determine a hardness value for the shroud you can share?
 
"If the bolt shroud is not hardened enough where the firing pin rides, and if the firing pin is not 40-42 RC, it will cause increased friction, therefore drag."

Did you determine a hardness value for the shroud you can share?
60 RC is what we use and found to be the lowest CF in our testing.
 

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