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The advice to lube lightly and size in steps is a good one. Can try this:
Use new brass
1. Lube lightly.
2. strip the decapper/expander rod out of the .219zipper die...want it empty on the inside so if a case crumples, it won't be trapped.
3. Set the Zipper die way-way out of the press.
4. Raise the ram all the way up (the die should be so far out of the press,the 30-30 case doesn't contact anything).
5. Screw the zipper die down until it just contacts the 30-30 case mouth.
6. "Bump" size in small steps. Move the 30-30 case down 1/2 inch, turn the zipper die down 1/4-1/2 turn, rise ran and size just that little bit of 30-30 case. Do it again...and again...and again...until you've size the whole case to .219Zipper.
(the idea here is to use only the top 1/2" of ram travel, where your leverage is the best).
7. If getting wrinkles...try using LESS lube or periodicaly withdrawing the partly sized case and redistributing the lube.

I've mangaed to make .22Jet and .256WCF cases from .357's without any intermediate dies this way. Still make .225W ases from 30-30's (after lathing the rim) without an in-betweens steps this way. (Before anyone point it out...only use the converted 30-30 cases for low pressure loads in the .225).

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Better would be some intermediate dies. If you could scrounge a 7mm and a .25 cal die it would help. As all you need it sot size the neck down until small enough to actually use the .219 die, can use ANY 7mm/25 die that is short enough to size the shoulder and wide enough in the body to not touch the 30-30 case. A 250 savage die would work (adjust to just size the neck) as would a 7mm/08.
 

· Registered
Joined
·
9,796 Posts
The advice to lube lightly and size in steps is a good one. Can try this:
Use new brass
1. Lube lightly.
2. strip the decapper/expander rod out of the .219zipper die...want it empty on the inside so if a case crumples, it won't be trapped.
3. Set the Zipper die way-way out of the press.
4. Raise the ram all the way up (the die should be so far out of the press,the 30-30 case doesn't contact anything).
5. Screw the zipper die down until it just contacts the 30-30 case mouth.
6. "Bump" size in small steps. Move the 30-30 case down 1/2 inch, turn the zipper die down 1/4-1/2 turn, rise ran and size just that little bit of 30-30 case. Do it again...and again...and again...until you've size the whole case to .219Zipper.
(the idea here is to use only the top 1/2" of ram travel, where your leverage is the best).
7. If getting wrinkles...try using LESS lube or periodicaly withdrawing the partly sized case and redistributing the lube.

I've mangaed to make .22Jet and .256WCF cases from .357's without any intermediate dies this way. Still make .225W ases from 30-30's (after lathing the rim) without an in-betweens steps this way. (Before anyone points it out...only use the converted 30-30 cases for low pressure loads in the .225).

------------------
Better would be some intermediate dies. If you could scrounge a 7mm and a .25 cal die it would help. As all you need it for is to size the neck down (the body is pretty close as it is)until small enough to actually use the .219 die, can use ANY 7mm/25 die that is short enough to size the shoulder and wide enough in the body to not touch the 30-30 case. A 250 savage die would work (adjust to just size the neck) as would a 7mm/08.

Here I'd size the neck in a 7.08 die...then in an adjusted out .250savage die, then right to the .219 die...all dies stripped of the decapping rod until after fully formed...then you put the decapping rod back in and start normal loading procedures.
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NEW BRASS...if I could yell it, I would. Old brass will triple the discard rate...real old brass will jsut plain refuse to form.

After all this forming, I would anneal the SURVIVORS of the first load (call it a fire form load, but it really isn't).
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Necks will get a bit thicker...but not enough to be a hazard.
 
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