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2022 Cast Bullet Seminar Sign Up Thread
- Thread starter 38ExtraSpecial
- Start date
For those that want to try it ... in my opinion the word "duplex" is incorrect. I need to buy the book and see what the guy calls it. If you Google Duplex loads, they are loads using two powders, usually a little bit of smokeless under black powder.
38ExtraSpecial
NES Member
IIRC duplex according to Elmer Keith was using a threaded tube that extended from the primer pocket to say 3/4 of the way up the case. This directed the primer flame up to the front of the powder causing ignition at the front of the powder column which somehow caused consistent ignition and I think higher velocity. The idea was mimicking large artillery/cannon shells.
Then the term was stolen for dual powder loads. Usually a small charge of fast burning smokeless that was in the bottom of the case covered by black powder. The smokeless helps the load burn cleaner and more complete supposedly.
Somewhere along the line the military loaded multiple bullets. I can’t remember if they called those duplex loads or not.
Front ignition cases, Elmer Keith Duplex loading?
Has anyone ever worked with the extended primer tube cases? I meet a guy last weekend who loaned me ten
forum.castbulletassoc.org
namedpipes
NES Member
That's a yes
namedpipes
NES Member
And thanks for the reminder, I'd forgotten to send my payment! (@Michael J. Spangler check your paypal)
I have some assorted "old school" reloading equipment I may bring to get some advice on, along the lines of "Save for Posterity, Use or Trash"
38ExtraSpecial
NES Member
Received.
Been away for the weekend but I’ll get out the PMs to everyone with the location probably tomorrow. Can’t freaking wait for this seminar. Seriously one of my favorite days of the year.
38ExtraSpecial
NES Member
This is my understanding as well. "Duplex" is a old skool' trick to help boost and extend the black powder burn. Black Powder actually does not progressively burn like smokeless, BP "explodes" . They are different behaviors. I've also read that guys will load a small amount of 4F first, followed by a main charge of the primary 1.5F / 2F and so on.. Don't ask me for more insight, that's all I got, LOLIIRC duplex according to Elmer Keith was using a threaded tube that extended from the primer pocket to say 3/4 of the way up the case. This directed the primer flame up to the front of the powder causing ignition at the front of the powder column which somehow caused consistent ignition and I think higher velocity. The idea was mimicking large artillery/cannon shells.
Then the term was stolen for dual powder loads. Usually a small charge of fast burning smokeless that was in the bottom of the case covered by black powder. The smokeless helps the load burn cleaner and more complete supposedly.
Somewhere along the line the military loaded multiple bullets. I can’t remember if they called those duplex loads or not.
Front ignition cases, Elmer Keith Duplex loading?
Has anyone ever worked with the extended primer tube cases? I meet a guy last weekend who loaned me ten
ffej ruedorb
NES Member
- Joined
- Oct 23, 2016
- Messages
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- 1,094
Gallery loads ?
So is there any need for another pot ? I would be happy to bring along my LEE Pro 20# pot if it would help allowing more guys to try. My primary goal in attending is more to observe / listen and learn from the veteran casters rather than actual casting.
38ExtraSpecial
NES Member
Yeah for sure. I’ll have 2 and I think Pastera has a couple.
Speaking of pots , anyone have a source of 120v heater elements?
Lee finally has their elements back in stock but at $30 not a terrible price
Oh and I think the Elements are the only lee part not made in the USA
Lee finally has their elements back in stock but at $30 not a terrible price
Oh and I think the Elements are the only lee part not made in the USA
pastera
NES Member
Lee Pro 4 Furnace Lead Melting Pot Heating Coil
The Lee Pro 4 Heating Coil is a handy replacement item to have on hand for your Pro 4 furnace. You never know when a part might wear out or break. ...
www.midwayusa.com
$8 plus shipping
$8 nice , might order a few!Lee Pro 4 Furnace Lead Melting Pot Heating Coil
The Lee Pro 4 Heating Coil is a handy replacement item to have on hand for your Pro 4 furnace. You never know when a part might wear out or break. ...
$8 plus shipping
Chaparral66
NES Member
Looking for 380 ACP dies and molds. Will have many RCBS dies and other RCBS supplies to possibly trade. Will have lots of odds and ends, solvents, brass and random gun parts available. Think McDonalds Dollar menu.
I have all the COWW and SOWW sorted and ready for smelting. Will bring my smelting setup along with pewter, tin/lead solder and 1 pound 90/10 solder rolls. If you go home empty handed it will not be my fault.
I have all the COWW and SOWW sorted and ready for smelting. Will bring my smelting setup along with pewter, tin/lead solder and 1 pound 90/10 solder rolls. If you go home empty handed it will not be my fault.
38ExtraSpecial
NES Member
Good way to send a Sunday! We will cast a bullet if your name.
Artie
NES Member
We missed you. Burnt up a couple buckets of the smokey range scrap today. Over 100lbs.
