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Cortina & Borden Interview

I consider Jim a friend even though we have never met. Definitely one of the guys that really gets actions. Theres not as many of them as you would think. He was the first timed action out there that had good ignition, at least in my opinion. It was a great interview. I do hope he has him on again.
 
Great video! One thing that hit me was years ago when he was starting out Pierce preferred chromoly over stainless because of issues with the stainless moving during machining. Borden's experience was the opposite. Interesting how things may be different with different techniques. I'm also sure Pierce figured out why that was going on.
 
I consider Jim a friend even though we have never met. Definitely one of the guys that really gets actions. Theres not as many of them as you would think. He was the first timed action out there that had good ignition, at least in my opinion. It was a great interview. I do hope he has him on again.
Agreed. Jim is full of information and really does a good job on his actions. This interview with Borden was excellent and is right there with your’s and Tom’s.
 
He is also an engineer if I'm not mistaken...
Yes, fairly common knowledge. He references it the video right at the beginning.

From the transcript:

"I started with TR (truing) up Remington 700s and Bob adamovic and I and I Consul with Bob brne some back in the day when he was doing uh action Tru and uh Bob was an engineer for bird machine and I was engineer for Proctor and Gamble"
 
Borden in the video stated he went to an .065" diameter pin tip instead of the common at the time Stiller .062". His old bolt bushing instructions call for an .062" pin with an .065" reamed hole.
 
Borden in the video stated he went to an .065" diameter pin tip instead of the common at the time Stiller .062". His old bolt bushing instructions call for an .062" pin with an .065" reamed hole.
I've never seen those instructions. I have not done many but I've always tried to keep that clearance at about half of that without issue. There are certainly others, Jim included, with far more experience in that area than myself. Jim's actions are top notch. I don't question much that he does and I'm not questioning this either. They work as received and are very consistent. The best IMHO.
 
Great down to earth approach to just about everything.

Since the interview is out there, I would ask him what his tempering temperature is. He is establishing a finished action with a RC hardness in the low 40’s giving a nominal tensil strength around 175,000 psi.

Since quenching 416 from 1800 degrees F will only yield a RC hardness of between 41 and 45, exactly what is his tempering temperature?
 
Great down to earth approach to just about everything.

Since the interview is out there, I would ask him what his tempering temperature is. He is establishing a finished action with a RC hardness in the low 40’s giving a nominal tensil strength around 175,000 psi.

Since quenching 416 from 1800 degrees F will only yield a RC hardness of between 41 and 45, exactly what is his tempering temperature?
Call him. Without looking it up, it sounds reasonable to me but I'm not sure of his process. I'm pretty sure he'd share that info, though, as it's pretty generic heat treat info.
 

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