Firing pin steel selection

[Metaloxide]

That was out of 1144 stress proof.

 

[Metaloxide]

I think I got it about perfect. It doesn't ding the shoulder of the chamber if it's dry fired and it doesn't interfere with the cylinder when it's rotated. However I think the end that gets hit by the hammer needs to be a few thousandths longer because it doesn't imprint the round as deeply as I am accustomed to and I don't want to risk hang fires.
Here's a picture installed from the hammer side.
And one from the cylinder side with the hammer raised.
And with the hammer down
And here's a couple of the test shell.
P.s those pictures were taken over my aquarium because I needed the good light.

 

[Metaloxide]

Well would you look at that!

 

[pontiac428]

Well would you look at that!

A PID, relay, and a type-K should cost about $75. Then, you've got yourself a heat treat furnace!

 

[Metaloxide]

A PID, relay, and a type-K should cost about $75. Then, you've got yourself a heat treat furnace!

Yep I'm so excited I could jump up and down like a little kid that just ate ice cream right now! I hadn't even thought to look on Facebook but I was just scrolling Facebook on one of the local groups I'm in and somebody posted a bunch of metal for free they're just trying to clean out the shop at a new house they bought and I see that thing in there so I messaged them as quick as I could and said I'll give you 50 for it because I don't want somebody else to get it.

 

[pontiac428]

Yep I'm so excited I could jump up and down like a little kid that just ate ice cream right now!

Since that's the case, I compressed this enough to fit and will just leave it here...

 

[Metaloxide]

$60 and it's mine!

 

[Metaloxide]

I just got home and ohmed out the coils and they are intact! It just keeps getting better!

 

[Metaloxide]

Well I made a probably final version.
I made it out of 4140 that was pre hardened to Rockwell C25 according to McMasters. I am wondering if that's hard enough?

 

[Advil]

No. You are looking for something 50ish Rockwell C. No less than 45.