M Die Expander Plug Threads
- Thread starter gman
- Start date
Glen's post brings up a good question. Are we talking about the part that threads into the top of the die or the actual expander spud that screws into the other part?
I agree with Glen on the part that threads into the die being 9/16-18. Made a few of those. The actual expander spud is probably 8-32 or 10-32.
I agree with Glen on the part that threads into the die being 9/16-18. Made a few of those. The actual expander spud is probably 8-32 or 10-32.
gman
Well-Known Member
Update:
The spud would fall right through the Lee die. I found a washer that fit perfect in the die and sit right on the shoulder that the Lee or NOE spuds sit on. I put a smaller washer on top that was a closer fit to the threaded shank on the spud and secured with a nut. Added a jam nut just in case. It's a temporary fix but it does work.
The spud would fall right through the Lee die. I found a washer that fit perfect in the die and sit right on the shoulder that the Lee or NOE spuds sit on. I put a smaller washer on top that was a closer fit to the threaded shank on the spud and secured with a nut. Added a jam nut just in case. It's a temporary fix but it does work.
Pistolero
Well-Known Member
Glen,
What diameters do you use for a .22 cal M-die spud? I am assuming that you want around .001 or .002
interference fit on the bullet itself - so if you are using .225 diam, you would theoretically want a .223
or even maybe .224 for the lower part, and then maybe something like .227 or .228 for the top part to
make the funnel to start the bullet in.
I plan on making one for .22 Hornet, just haven't had the time, too many other projects demanding
my time.
Bill
What diameters do you use for a .22 cal M-die spud? I am assuming that you want around .001 or .002
interference fit on the bullet itself - so if you are using .225 diam, you would theoretically want a .223
or even maybe .224 for the lower part, and then maybe something like .227 or .228 for the top part to
make the funnel to start the bullet in.
I plan on making one for .22 Hornet, just haven't had the time, too many other projects demanding
my time.
Bill
Pistolero
Well-Known Member
OK, I am starting from 100% ignorance on the topic, other than generally what the M-die is.
Never owned or used one, thinking about making a few stems and trying them. Always used
the Lee Universal Flare die to get Pb bullets into rifle cases. Didn't realize that the entry area
was that much larger.
Bill
Never owned or used one, thinking about making a few stems and trying them. Always used
the Lee Universal Flare die to get Pb bullets into rifle cases. Didn't realize that the entry area
was that much larger.
Bill
There seem to be 2 separate trains of thought back at Lyman with the M dies -- one in which the die actually flares the case mouth (like a typical pistol flaring die), and a second where there is a single step up to may .003" above bullet diameter. I chose to use the first simply because I can see it and know the case has been flared, but obviously the second approach places less strain on the case mouth.
Teddy (punchie)
New Member
I have a few of these from trades and buying boxes of dies and mixed lots.
Buddy is loading 380 and says he is having to open mouth very wide and deep to take the hard cast bullet.
I said now, not 100 % but I think you need and M die expander. M die from what I understand expands deeper and straighter then a regular neck of month expander.
Is that about right ?? Teddy
Buddy is loading 380 and says he is having to open mouth very wide and deep to take the hard cast bullet.
I said now, not 100 % but I think you need and M die expander. M die from what I understand expands deeper and straighter then a regular neck of month expander.
Is that about right ?? Teddy
To the OP,mcould you take the spud,drill and tap for the correct thread and use it that way?
I myself like the M die. Some folks love them some cuss them. I have not as of yet had an issues that I can point a finger at the M die caused.
It should open the brass back up to a more standard size and length for a cast bullet. But, what is standard when size is king?
Got into an interesting sit down over coffee discussion on this some time back with a couple of guys.
Sizer die may size down to much. Then the M die is not quite enough, but better. Then on some type crimping dies it may actually swag down our perfectly sized bullet in the case
A bushing die of proper size may be in order in some instances.
I was loaned a lee universal belling die,mi returned it in short order. My K31, Krag and 1903 had no tolerance for its use. The 03 being the pickiest of the three leaded in about 10 rounds.
I pulled them when I got home and the case had sized the bullet down sure enough. I suspected it when I seated them.
I have since got a set of dies that sizes on the large end of things, but I still use the M die.
I do have to be careful with the K31 with its tight dimensions.
Jeff
I myself like the M die. Some folks love them some cuss them. I have not as of yet had an issues that I can point a finger at the M die caused.
It should open the brass back up to a more standard size and length for a cast bullet. But, what is standard when size is king?
Got into an interesting sit down over coffee discussion on this some time back with a couple of guys.
Sizer die may size down to much. Then the M die is not quite enough, but better. Then on some type crimping dies it may actually swag down our perfectly sized bullet in the case
A bushing die of proper size may be in order in some instances.
I was loaned a lee universal belling die,mi returned it in short order. My K31, Krag and 1903 had no tolerance for its use. The 03 being the pickiest of the three leaded in about 10 rounds.
I pulled them when I got home and the case had sized the bullet down sure enough. I suspected it when I seated them.
I have since got a set of dies that sizes on the large end of things, but I still use the M die.
I do have to be careful with the K31 with its tight dimensions.
Jeff