Wildcat case forming dies?

[mdonnr]

I'm looking to do a wildcat cartridge off a short mag case and was wondering who makes a case forming die similar to Skip Otto's? I know pbike257 did some for 308 case sizes but it sounds like he's pretty busy right now. From what I saw, he didn't make anything for short mag cases.

Any leads would be helpful.

 

[Terry]

You need to be more specific.

WSM or WSSM case?

what will it become?

 

[mdonnr]

300 Ruger Compact Magnum shortened .200" or so and necked down to 6mm or 6.5mm

This is just gonna be a winter/screw around project, something different

 

[Dusty Stevens]

Get some drill bushings and make your own

 

[STS]

What is the largest diameter on the body of the case you are working with? I have a case forming die and a probably 12 bushings (IIRC). I would have to measure the body diameter of the die to see if it would do the RCM case.

 

[mdonnr]

The body/shoulder junction measures .515" and the base of the body measures .532"

 

[STS]

The die body is .550 ID. I'll send a PM so you can get an idea of what this die/bushing set is like.

 

[mdonnr]

Pm Replied

 

[357Mag]

Mdonnr -

Howdy !

For rudimentary case forming, might you be able to use a .300 Rem Ultra Mag FL die cut shorter ?
Or..... use the same die un-modified, along w/ a " perch "; that will allow the cases to be run up-into the
larger diam die ?

You can make a " perch " out of a shell holder, a flat head machine screw w/ head diam < base diam of the
brass; and a jam nut. The perch method works along w/ a conventional press; like a " Rockchucker ".

Case specs I read for .300 Rem Ultra Mag show shoudler diam and base diams slightly > the case measurements you quoted. The .300 RUM specs I viewed also listed a shoulder angle of 25*.
That being true, it would maker a great shoulder angle for case forming purposes; vs something like a die
w/ a 308 angle.


With regards,
357Mag

 

[357Mag]

MDONNR

Howdy, again !


My... I made quite a few typos. The last line of previous message was supposed to read .... " 30 degrees ".


With regards,
357Mag