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Which charging die for 7RUM (load master w/auto-disk)?

 
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  #1  
Old 05-18-2012, 07:15 AM
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Which charging die for 7RUM (load master w/auto-disk)?

With my 7RUM due to arrive soon, I have decided to get the first rounds that will be shot through it loaded up. I picked up an RCBS carbide 2-die set, and the first 50 (new) brass cases are now sized, expanded, trimmed, chamfered, tumbled, and polished. I'm now setting up the load master press for priming, powder charging, and seating of the bullets (they will be re-sized & expanded as well). The powder measure that I have is a (chain-driven) auto-disk pro.

But there is an issue that is holding me up. What charging die am I supposed to use for charging the 7RUM cases with the auto-disk? The Lee "universal charging die" says it is for the "perfect" powder measure, not the auto-disk. And the Lee "auto-disk rifle powder charging die" says it only handles cases up to 2.015", and 7RUM cases are 2.850". That is basically putting me between a rock and a hard place, as I am unable to come up with anything else, so far.

Can someone please help me out with what charging die I am supposed to use for this particular application? (I'm not finding a 7RUM "powder through" die, either)
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Old 05-18-2012, 02:44 PM
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Re: Which charging die for 7RUM (load master w/auto-disk)?

going to be hard to get that answer. Your probably the only one in the country loading ultra mags on a lee progressive!!
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Old 05-19-2012, 08:39 AM
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Re: Which charging die for 7RUM (load master w/auto-disk)?

Really? Why is it such a big deal? Isn't the load master pretty much the beefiest press out there?. It fits/handles the ultra mags with ease. I was having no problems whatsoever, until it came to dropping powder charges.

I'm not 100% sure that Lee doesn't make either a universal die that is compatible with the auto-disk, an auto-disk rifle powder charging die that handles cases longer than 2.015", or a 7RUM powder though die that fits auto-disk, or even some sort of adapter that makes for fitment of any of the above to the powder measuring/charging setup that I have. But for some reason, Midway doesn't appear to carry anything that will work. I was of the belief that if it exists, THEY are the most likely to carry it. But that could be a false assumption, I suppose.

If I do come up totally dry on something commercially available, it looks like I'm going to have resort to modding (or maybe hacking up would be the better way to put it, as I only have rudimentary tools to work with) one of my existing dies. So this is basically my plea to anyone who can think of anything that is a bolt-on solution.
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Old 05-19-2012, 01:50 PM
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Re: Which charging die for 7RUM (load master w/auto-disk)?

lee does sell a conversion for the auto disc that allows you to stack two discs on top of each other. As to it being the beafy press on out there, a lot of guys would argue with you on that one. It is plenty strong though for about anything. I had one in my early days and sure dont miss it. I spent more time tweeking things then putting out ammo.
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Old 05-19-2012, 02:27 PM
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Re: Which charging die for 7RUM (load master w/auto-disk)?

in my humble opinion if you are reloading the 7mm mag and doing it with any auto indexing loader your are not only looking for problems you are asking for them. All magnum loads must have individually wieghed charges.
But, by all means go ahead use that system, and when, not if but, WHEN you have a burst chamber you will be able snatch the 2 pebbles from my hand.
Grasshopper
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Old 05-19-2012, 04:03 PM
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Re: Which charging die for 7RUM (load master w/auto-disk)?

I agree totaly. I load alot on progressives. Ive got 3 lnl hornadys and 2 550 dillons. But about the only bottlenecked rifle rounds i load progressively are 223 and 308 for the ars and then i will ONLY LOAD IT progressively using ball powders. I doubt a guy would ever shoot more then 50 rounds out of a mag rifle in a day anyway and for that kind of quanity i prefer the slow, precise and careful way.
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Old 05-19-2012, 11:34 PM
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Re: Which charging die for 7RUM (load master w/auto-disk)?

Quote:
Originally Posted by lloydsmale View Post
I agree totaly. I load alot on progressives. Ive got 3 lnl hornadys and 2 550 dillons. But about the only bottlenecked rifle rounds i load progressively are 223 and 308 for the ars and then i will ONLY LOAD IT progressively using ball powders. I doubt a guy would ever shoot more then 50 rounds out of a mag rifle in a day anyway and for that kind of quanity i prefer the slow, precise and careful way.

Exactly
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