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Need advice on dropping powder into large (magnum) cases, on a press.

 
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  #8  
Old 06-17-2012, 10:15 AM
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Re: Need advice on dropping powder into large (magnum) cases, on a press.

UPDATE: I haven't received the measure yet, but I am now just about 100% sure (from looking at pics) that I will definitely be needing an "intermediary" die, which has an ID that will handle RUM cases. The only one that I can come up with which conforms to that requirement is the dillon extra large powder die. But I'm not sure if the fit would be universal fit to powder measures OTHER than the 450/550/650 series dillon setups. For a powder die to have "universal" fit, it would need to have the top tapped out to 7/8X14 female for PM's to fit into, and 7/8X14 male thread at the bottom, to fit standard presses, correct?

Can anyone say if the top of the DXLPD is properly threaded to fit standard powder measures? (I'm sure that the bottom thread is correct)

If that is NOT the case, is any sort of adapter available?

If THAT is not case, would it be soft enough to easily drill and tap it?

On that same note (the "soft enough?" note), would I be better off just taking a regular size large rifle die that I KNOW will fit the PM, and drill (the bottom end of) it out just a bit (to 9/16, as I don't have a 35/64 drill bit), so the RUM cases will fit into it?
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Old 06-20-2012, 05:45 AM
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Re: Need advice on dropping powder into large (magnum) cases, on a press.

Wow, I'm pretty amazed at the lack of responses regarding this subject. I would have though that there WERE people who have already been though this, and know what is what. But if that isn't the case, I'll try to help others out by sharing what I have learned so far.

The top of the dillon extra large powder die has exactly the same appearance as the top of the lee powder dies. But it isn't of large enough diameter to directly accept a powder measure having 7/8x14 thread. Then I saw a die that had what looks like a thread adapter (is it something that you would call a collet?) mounted to the top of it, by means of what looks like set screws (again, I am only looking at pictures). That looks like the last piece of the puzzle that I was looking for, to make everything fit together. Does anyone know what the correct name for that piece is?

Once I have one of those, it looks like I should be good-to-go. Thanks.
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Old 06-24-2012, 10:30 AM
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Re: Need advice on dropping powder into large (magnum) cases, on a press.

OK, I'm starting to get tired of having to update my own findings as the hardware arrives, having to retract what I said that I thought the situation was, before I actually had the pieces in had. With no one able (or maybe willing?) to set me straight on this stuff BEFORE I actually purchase something that I don't know for sure will fit/work for what I am trying to do, I feel like the proverbial lab rat. But if it helps anyone ELSE out, I'm glad to do it.

After I finally received the PM, I saw that the thread size is NOT 7/8x14. NOR is it 5/8x14, as I believe one poster did suggest. NOR is it 5/8x18, which is the size that the smaller, pistol-sized PM's (and dies) use. It mikes out to 5/8x12, which is very coarse for that diameter. But being that it is 5/8, means that it WOULD be able to fit into of a powder die WITHOUT any sort of collar fixed to it.

Here I go making guesses/assumptions again, but this will be the last one (and I'm done): I haven't received the BIG die yet to verify a direct fit with the PM, but I'm now thinking that there are 2 standards for PM's & powder dies. The small capacity PM's used for small cases (as in pistol) have 18 pitch, which is what the small powder dies will accept. The large capacity PM's run 12 pitch, only allowing fitment onto/into large powder dies. I'm tempted to ask if anyone can verify this, but going by previous responses, I need not bother asking. But if this IS the case, THEN I'm good-to-go!
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  #11  
Old 06-24-2012, 08:41 PM
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Re: Need advice on dropping powder into large (magnum) cases, on a press.

I'm tagging this for intrest having huge issue's with my RCBS digital right now. Thinking about the Harrel but I just dont know. Love to here more from the owners and how it works with powders like H1000 and RUTUMBO.
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  #12  
Old 07-06-2012, 11:19 AM
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Re: Need advice on dropping powder into large (magnum) cases, on a press.

I don't know about the RCBS digital or the harrel (PM's, I presume). But for lee and compatibles, HERE is the deal, after I finally had the dillon XL powder die in my hand: First off, I believe that I need to make the following correction: The thread size of the lee perfect powder measure (and whatever else is compatible, if it is in fact, a "standard") apparently is 5/8x11 - NOT 5/8x12. Anyways, unlike the lee powder-through dies (which are threaded for the smaller capacity 5/8x18 thread disc type measure), the dillon XLPD is NOT threaded at all at the top, on the inside. But it does appear that the 3/4" bore in the top of the die WOULD be able to accept a pressed-in 5/8x11 thread INSERT. But instead of bothering to try to find such an animal, I decided to take a different approach. On the lee PPM (and presumably others), there is a knurled aluminum locking collar with an o-ring that tightens down on the horn at the bottom where the powder comes out, so it can be adjusted for correct height, depending on the length of the cases being charged. What I did, was turn down the bottom .15" of the collar, just enough to get a tight "press" fit into the top of the XL powder die. With adjustability at the outlet horn, and adjustablity of the the die itself in the press, I do believe that the setup is now universal, able to be adjusted for any size rifle case that needs to be charged - on the progressive press! There is one other thing that I think I should mention before closing out on this subject. Obviously, you could link the PM's "strokes" to the action of the press's strokes. But I don't advise doing that, if obtaining consistent, accurate powder drops means anything to you. These types of PM's provide maximum accuracy/repeatability when the handle/lever is given a somewhat quick, but solid (and consistent), "flick" up, given an adequate (and consistent) amount of time for the powder to fill the measuring chamber, then flicked back down (also in a repeatable manner) to fill the case. Obviously, the correct time to do this would be when you have the press at the top of it's stroke. -There you have it.
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  #13  
Old 07-06-2012, 03:10 PM
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Re: Need advice on dropping powder into large (magnum) cases, on a press.

Looks like you solved your problem. Do you shoot that many RUM rounds that you need to automate charging for high volume? This is what I do.



That was a funnel I cut down that fits snuggly into the Lee Turret. More elegant is the Lee Powder Through Expander dies that accept the Lee Funnel. I just use a custom dipper cup when charging large cases instead of farting around with a powder measure. I make dippers from retired cases and they are very repeatable.
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