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21
Loading Data & Reloading Procedures / Re: problem crimping 357 magnum
« Last post by mikefamig on January 14, 2021, 10:32:49 am »
Thanks much, I'll work with it some more today and let you know how it goes.

Mike.
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Loading Data & Reloading Procedures / Re: problem crimping 357 magnum
« Last post by rbwillnj on January 14, 2021, 09:57:32 am »
When I set up machines for a roll crimp, I back of the seating stem so it doesn't come into play.  I put an sized, unflared case in the seating/roll crimp station, and with the tool head as low as it goes (not camed over) bring the die down to where the crimp section of the die just touches the mouth of the case.  Then bring the die down another half turn.  Then I adjust the seating stem to get the desired OAL.   You will mess up a few bullets in the process, but that's jus the way it is.   If you happen to have a loaded round with the correct OAL, you can put that in the seating station and with the tool head in it's lowest position, bring the seating stem down to where it stops on the bullet.   This will get you pretty close but you might need to make some minor adjustments.

The condition you have happens when the crimped portion of the brass bottoms out in the crimp groove, or digs into the bullet while the bullet is still moving.  The brass has nowhere else to go so it begins to buckle or bulge the case below the bullet.

This is also a common problem with bullets that have no crimp groove like 45 ACP.   If people try to crimp too much they get a bulge below the bullet.  Doing a Taper Crimp in a separate station alleviates the problem.   For 45 ACP, I set the Seating/Role Crimp die so it removes the flair, but doesn't crimp, then crimp with a Taper crimp die.
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Loading Data & Reloading Procedures / Re: problem crimping 357 magnum
« Last post by mikefamig on January 14, 2021, 09:09:11 am »
Yes I am certain that it's happening in teh last stage when crimping. I increased the flare to allow the bullet to enter the casing with less resistance and it is no better so it is the crimping that causes it. Today I'll try backing off the crimp a little  (~1/8 turn)  at a time.

I also had some trouble setting up this stage with the 38 special. Moving the crimp die effects the OAL more than I would expect it to. The crimp die seems to be hitting the bullet and pushing it down.

Can anyone give me detailed instructions on setting the combined roll crimp and bullet press stage?
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Loading Data & Reloading Procedures / Re: problem crimping 357 magnum
« Last post by NYKenn on January 14, 2021, 07:18:39 am »
No, I do not think it is okay. It may function, but it also stresses the case and could lead to premature case failure.

Have you confirmed this is occurring at the seater die and not another stage.

Perhaps the case is being impacted at the powder drop and being slightly compressed by the spout when the head is brought down?  Possible also on the priming station but less likely.

Definitely let us know when you work it out and find the cause.

NYKenn
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Loading Data & Reloading Procedures / Re: problem crimping 357 magnum
« Last post by mikefamig on January 13, 2021, 11:03:28 pm »
Here's a pic that shows the crimp and the rings around the body of the casing where it buckled a little.
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Loading Data & Reloading Procedures / problem crimping 357 magnum
« Last post by mikefamig on January 13, 2021, 10:35:06 pm »
I startedreloading about six months ago when I inherited a Star press and some loading supplies. I cleaned up the press, set it up for 38 special and all went well. I've loaded a few hundred rounds and fired a few and it all looks good.

tonight I started to set the press for loading 357 magnum ammo. Everything was fine until I got to crimp and set stage. I used the same procedure that I used with the 38 special. I brought the crimp die down until it touched the top of a flared casing. Then  I set the bullet press to get the OAL approximately correct. Then i slowly worked the crimp down to get a nice snug crimp and then the bullet press to the desired OAL (~1.560 - 1.570).

The problem is that the walls of the brass casing is buckling a little bit when O press the final stage. I set and reset and approached the crimp slowly and gently and still I see a little wrinkle in the wall of the casing. Is this OK?

TIA, Mike.
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Star Reloaders / Re: Parted out Machines on eBay - Buyer Beware!
« Last post by rbwillnj on January 11, 2021, 11:47:17 pm »
Sorry, the $250 does not include dies or shell plate.  I was trying to do an apples to apples comparison to the stripped down tool head that sold on eBay.  There are from time to time some good bargains on eBay for complete tool heads with dies, but you have to be patient and hope no one else is looking for the same thing.



Maybe,  If you don't mind unhappy customers.   I'm pretty sure the ones who purchased the crankshaft assembly and primer casting won't be very happy with their purchase.

As for the tool head, I sell a nice complete tool head with powder slide housing for $250.   If you add up all the parts that tool head is missing, it comes to $138 plus shipping, The tool head customer spent $140 plus $10 shipping, so not exactly a bargain.

Does tat $250 price apply to a tool head equipped with 45 ACP dies? I don't want to spend the money right now but that will be on my wish list if it does. And does it include the casing holder?

Mike.
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Star Reloaders / Re: Parted out Machines on eBay - Buyer Beware!
« Last post by mikefamig on January 11, 2021, 10:54:45 pm »
Maybe,  If you don't mind unhappy customers.   I'm pretty sure the ones who purchased the crankshaft assembly and primer casting won't be very happy with their purchase.

As for the tool head, I sell a nice complete tool head with powder slide housing for $250.   If you add up all the parts that tool head is missing, it comes to $138 plus shipping, The tool head customer spent $140 plus $10 shipping, so not exactly a bargain.

Does tat $250 price apply to a tool head equipped with 45 ACP dies? I don't want to spend the money right now but that will be on my wish list if it does. And does it include the casing holder?

Mike.
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Star Reloaders / Re: Star Universal Shell Plate Movement
« Last post by beeser on January 11, 2021, 06:28:12 pm »
Thanks!  Removing the ball and cleaning the seat resolved the issue completely. 
30
Star Reloaders / Re: Star Universal Shell Plate Movement
« Last post by rbwillnj on January 11, 2021, 03:52:06 pm »
The steel ball is probably not coming all the way up.  This is usually caused by crud in the hole in which the steel ball rides.   The best solution is to unmount your reloader, remove the brass plug on the bottom and clean up the hole.    Sometimes, you can fix the problem by pushing down on the ball with a pencil eraser and blowing out the crude with some air.
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