Lyman M-Die anyone?

[M1Tommy]

I need to buy a couple case expander dies (long sordid tale).
The Lyman M-Die seems like a 'good thing'. Do any of y'all have an opinion about this die?

Sincerely,
Tommy

Information

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[RicinYakima]

I've used them for years with cast bullets. They work just fine, but even better with the Lee "O" ring dies, correctly adjusted, they center the mouth very well. HTH, Ric

[M1Tommy]

I've used them for years with cast bullets. They work just fine, but even better with the Lee "O" ring dies, correctly adjusted, they center the mouth very well. HTH, Ric

OK, thanks.
Yes, My main use would be w/ cast bullets ("boolits"?).

Question: Why "with Lee O-ring dies"? Do you use a Lee die body and the Lyman M-die innards or what?
I have Dillon dies.

Tommy

[burgie]

M dies are great I own two. I see that Lee came out with one die that does it all but have never seen one.

Lee Precision, Inc. Reloading Tools and Equipment: Lee Lube and Size Kit

[AndyCA]

I need to buy a couple case expander dies (long sordid tale).
The Lyman M-Die seems like a 'good thing'. Do any of y'all have an opinion about this die?

Sincerely,
Tommy

Hey Tommy,

I just bought one a couple weeks ago for a cast load experiment for my 03's, and so far i like it. I'm using a standard RCBS die to resize/deprime, then hit it with a properly adjusted M die. I made sure all my brass was trimmed to the same length before running it thru the "M". It make seating easier, and no shavings from the lead are present (which caused me to look at the M die in the 1st place).

HtH
-Andy/CA

[M1Tommy]

M dies are great I own two. I see that Lee came out with one die that does it all but have never seen one.

Lee Precision, Inc. Reloading Tools and Equipment: Lee Lube and Size Kit

As I understand what I've read, the Lee die flares only the upper bit of the case mouth, whereas the Lyman die works the case body a bit and also flares teh case mouth as desired.

Thanks,
Tommy

[M1Tommy]

Hey Tommy,

I just bought one a couple weeks ago for a cast load experiment for my 03's, and so far i like it. I'm using a standard RCBS die to resize/deprime, then hit it with a properly adjusted M die. I made sure all my brass was trimmed to the same length before running it thru the "M". It make seating easier, and no shavings from the lead are present (which caused me to look at the M die in the 1st place).

HtH
-Andy/CA

OK, thanks. I trim every firing with a Giraud trimmer, so case length is 'on'.
I'm thinking t buy 3 M-dies now, .45, .38 and for 30-06 too.
Thanks for the reply.
Tommy

[RicinYakima]

M1Tommy,

Sorry, I didn't proof read that well enough. I meant to say "Lee "O" ring die lock nut". It is designed like a regular die lock nut except that the surface that mates with the press has an "O" ring. Lee made them so you could tighten with your fingers and the die not move in use. But they also allow the die to center in the threaded press hole. There is a lot of tolerances between press threads and dies threads. The Lee nut works very well with everything except the Bonasza press.

The Lee Universal expanding die does indeed only flare the very top of the neck.

Ric

[M1Tommy]

M1Tommy,

Sorry, I didn't proof read that well enough. I meant to say "Lee "O" ring die lock nut". It is designed like a regular die lock nut except that the surface that mates with the press has an "O" ring. Lee made them so you could tighten with your fingers and the die not move in use. But they also allow the die to center in the threaded press hole. There is a lot of tolerances between press threads and dies threads. The Lee nut works very well with everything except the Bonasza press.

The Lee Universal expanding die does indeed only flare the very top of the neck.

Ric

OK, that makes sense.... as far as I understand the O-ring lock nuts. IO've seen them, but have never used one before.
Thanks for that reply.

Tommy

[jmoore]

I like "M" neck expanding dies well enough to have made the concept work in the Dillon 550 powder feed tube / expander sleeve. Scads easier to start bullets straight!