Bushed firing pin hole - what material?

[acloco]

What material to use when applying a bushing to the firing pin hole of a bolthead?

 

[shortgrass]

4140HT,,,, which is the material a grade 8 bolt is made of (or the equivalent material that meets the same specs).

 

[Rustystud]

Look on Jim Bordens web site he has the instructions on how to do it. Step by step.
Nat Lambeth

 

[acloco]

Thanks!

 

[GNERGY]

I have done a couple for myself and a couple friends and I have used a 5-40 flat socket head capscrews, they are grade 8. I loctite them and then drill the .062 hole in the center and then turn down the firing pin to .060. Then face off the head of the screw flush with the face of the bolt. Only countersing the screw into the bolt about .050 so when you face it off you get rid of the hex for the wrench, ( I learned that the hard way ), other wise your primers have a nice hex on them after firing. :-[
Tarey