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Old February 3, 2000, 09:42 AM   #1
Join Date: January 24, 2000
Posts: 35
We just tried or first reloads for .41 mag pistol on a Dillon 550 w/ Dillon dies.

The resizing die was tough as hell to cycle (compared to .45 & 9mm). All the .41 mag brass was once-fired factory, reasonably well polished. Do factory .41 mag cases swell so much they require brute force to resize, or should we consider the die set may be slightly imperfect? I bought the high-dollar carbide dies so I wouldn't have to fool with any messy lubes; I'm determined not to cave in and use lube.

According to our calipers, the sized cases were .001-2 under the spec shown in a Lyman #47 handbook.

I do plan to call Dillon & quiz them, but I wanted to ask here as well.


PS: I only hope that someday I can contribute 1/2 as much knowledge as I 've aquired on these forums!
able2ski is offline  
Old February 3, 2000, 01:47 PM   #2
Robert the41MagFan
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Join Date: November 18, 1999
Posts: 1,233
The larger Magnum cases are a bit harder to cycle in the resizing die, but not to the point of damaging the equipment. The cases are large and wider in diameter, creating lots of friction and a longer stroke. I use Lee carbide dies, so can't help much as to the quality of Dillon die.
I have two 41 Magnum cases in front of me, one factory new and the other fired and resized 5 times. The factory new case is .429" at the belly, the used case is .4295". The wall thickness is the same in both cases, .010".
Hope this helps a bit, feel free to email me if you have any other questions.

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Old February 4, 2000, 08:19 PM   #3
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Nickel plated or plain brass? I've found the brass cases to be a little easier to resize.
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Old February 5, 2000, 11:57 AM   #4
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I've found my cases easier to resize if sized before tumbling.
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Old February 6, 2000, 04:54 AM   #5
Join Date: January 3, 2000
Location: PRK, USA
Posts: 31
Able, I've never encountered your problem in either nickel or brass cases. I use Dillon carbide dies in a RL550 and don't ever recall having a difficult time. I usually de-prime with a universal die. Then, I clean them in a Lyman 1200 tumbler. From this point on, I just size, prime, add powder, seat bullet, and crimp. Call Dillon and inquire as to what they think is happening. It's possible your die is slightly undersize. Dillon's customer service is nothing if not first rate. Perhaps the .41Magnum is making a comeback? I certainly hope so:^) All you .41Magnum shooters e-mail Winchester about a partition gold in .410 of about 250grs.!!!! RKBA!

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Old February 8, 2000, 12:58 AM   #6
Join Date: August 1, 1999
Posts: 56
10-4 on the 41 making a comeback! Reddog
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Old February 8, 2000, 09:22 PM   #7
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Join Date: October 24, 1999
Location: Over da bridge, Mi
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I agree on the .41 mag. comeback. In fact I'm helping the cause with a new Desert Eagle in that caliber.
Never had any problems resizing them with carbide dies. Must have been fired in really oversized cylinder chambers.

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