smokeywolf
Well-Known Member
I think Ben might be the most qualified here to fit that bill.
Duplex loads...faster powder on top?
- Thread starter JonB
- Start date
I think Ben might be the most qualified here to fit that bill.
Eutectic
Active Member
Good morning Ben....
smokeywolf has recommend you to solve our mystery.
Can the word "duplex" be used in a different context other than the common definition of 'two different powders'? This, in reference to Elmer Keith's "Duplex" experiments with 'forward ignition'?
Thanks, Pete
Ian
Notorious member
Neither was Elmer. He made up terms to fit the science he was inventing, same as the rest of us.
fiver
Well-Known Member
true.
but I can't see him using the term 'duplex' in any other context than to mean something with 2 parts.
I have never met Elmer nor read his book, but have talked to others that have met or knew him and some that have even used his equipment.
from their description he would seem to be more like the old country doctor that would tell a patient to go fishing for a week rather than prescribe blood pressure medicine.
but I can't see him using the term 'duplex' in any other context than to mean something with 2 parts.
I have never met Elmer nor read his book, but have talked to others that have met or knew him and some that have even used his equipment.
from their description he would seem to be more like the old country doctor that would tell a patient to go fishing for a week rather than prescribe blood pressure medicine.
Eutectic
Active Member
Smarter than you think Lamar. He did have a way of 'playing' the conversation to make up his mind about who he was talking to.
I don't think 2 has ever been in question.... Only 2 what?
Pete
F
freebullet
Guest
Very interesting thread.
Thank you for sharing such experience & details as have been shared here.
I thought this might be of interest.
That is the 50 spotter tracer round filled with the devil based(as some would say) powder imr7383. Quite interesting what has & can be done.
Thank you for sharing such experience & details as have been shared here.
I thought this might be of interest.
That is the 50 spotter tracer round filled with the devil based(as some would say) powder imr7383. Quite interesting what has & can be done.
Skilled labor Ian, skilled labor. Or they use the people they want to get rid of?
I will see if I can find time to peruse my Keith books and see what he wrote about this. I really think the tube to push ignition to the front of the case is what he referred to as duplexing. Why he used that term I have no idea?
I don't remember any references to Elmer using two powders in a single load. He generally used the slowest possible and called it good.
I will see if I can find time to peruse my Keith books and see what he wrote about this. I really think the tube to push ignition to the front of the case is what he referred to as duplexing. Why he used that term I have no idea?
I don't remember any references to Elmer using two powders in a single load. He generally used the slowest possible and called it good.
smokeywolf
Well-Known Member
If I were going to section a round, I'd draw all components in AutoCAD, assemble them, then section them. Using the right layer coloring and lighting, you can make it look like a photograph.
You can fill a bowl with the powder, snap a jpeg of it and convert it to a surface that can be applied to a 3D object. If I wanted, I could draw a reloading bench in AutoCAD and assign an image of powder to the entire surface of the bench.
Colors and lighting sure do look like a CAD rendering. If it is a CAD rendering, somebody had to section an actual bullet to learn its interior features so it could be drawn accurately.
Also, if that were done with real components, primer and bullet would have to be epoxied into the case to keep them from popping out.
You can fill a bowl with the powder, snap a jpeg of it and convert it to a surface that can be applied to a 3D object. If I wanted, I could draw a reloading bench in AutoCAD and assign an image of powder to the entire surface of the bench.
Colors and lighting sure do look like a CAD rendering. If it is a CAD rendering, somebody had to section an actual bullet to learn its interior features so it could be drawn accurately.
Also, if that were done with real components, primer and bullet would have to be epoxied into the case to keep them from popping out.
IIRC, Elmer's reason for the duplexing was a hot barrel. They [OKH} determined they were burning the powder from the wrong end. The tube was supposed to bring the firing ignition of the primer into the top or center creating a duplex burn of the powder. It sounds like it cold be a candidate for SEE if done wrong but with the slow powders it may have worked.
I had a great admiration for Elmer but was living in the wrong end of the State of Idaho. Now, having worked across much of his growing up sites I can see how easy it would be to try to herd sheep with a 40-62 on the Winston flats.
I had a great admiration for Elmer but was living in the wrong end of the State of Idaho. Now, having worked across much of his growing up sites I can see how easy it would be to try to herd sheep with a 40-62 on the Winston flats.