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Old February 12th, 2020, 07:53 PM #1
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Stainless Pin Wet Tumbling- Gripe

I wet tumbled a bunch of 6.5 Grendel with Dawn, Lemishine (overpriced citric acid) and stainless pins.
Anyone want to guess the precise length of the stainless pins? Yup, the sunsabitches are exactly the same length of the ID of a 6.5mm/.264" cartridge.
I spent more time removing wedged pins from the case mouths than I spent resizing and decapping the brass.
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Old February 12th, 2020, 07:59 PM #2
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that sucks, did you pull the cases out of the water by hand or try to tumble them out?

are you decapping w/ a decapper or are you sizing/decapping first with a sizing die? If you only decap, it can leave a larger ID.
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Old February 12th, 2020, 08:28 PM #3
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You need to use a tumble type separator to shake those thinks loose.
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Old February 12th, 2020, 08:32 PM #4
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I still dont see the need to clean brass with SS pins. Seems like more work than it's worth.

Believe it or not, you need lube or carbon build up in the neck for a consistent bullet release. SS pins strip all that away.
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Old February 12th, 2020, 09:28 PM #5
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SS pin tumbling

I use SS pins for cleaning rifle brass, 5.56 and larger. I use small pins and large pins depending on the caliber of the brass. I can tumble 1200 5.56 brass at a time using the same formula you use. I pour out the dirty water and rinse the brass by pouring clean water in to tumbler and pouring it out. I then fill a 5 gallon bucket with warm water and dump all of the brass and pins into it. The water level is about 2/3 thirds high in the bucket. I proceed to remove the brass by hand and allow the water to flush out the pins. I have never had an issue, but it does take some time. I occasionally have to shake the brass for some pins to come out. I thought about a tumbler to use for the pin removal, but you can only tumble so much brass at one time. I do this in the summer so that I can lay the brass out on a towel on the deck to dry. I do this on brass I want to load for accuracy loads, not plinking.
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Old February 13th, 2020, 06:56 AM #6
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Surface tension of water helps hold the pins to the cases, inside and out. I empty my Thumbler tumbler contents into a Lyman media separator (I still do some dry tumbling at times), liquid and all. Most of the pins fall through the basket straight away. Add fresh water until the tumbler basket with the brass has an inch or three of water in it. Then close up everything and give it 10 slow spins clockwise, then 10 slow spins anti-clockwise. Tumbling the cases under water defeats the surface tension, and good old-fashioned gravity (as opposed to the new fangled gravity) does the rest. Rinse, dry in a free dehydrator off of Marketplace, and then spin the dry brass one last time in the separator. Less than 1% of cases that have a pin stuck inside. The process is not nearly as cumbersome as it might sound. When prepping brass, I set up all the tools beside one another on the bench and simply pour the brass from one tool to the next. The Harbor Freight long-reach magnetic pickup recovers the pins quick and easy.

Maybe I just have different size pins, maybe I am lucky, or just maybe this process does the job.
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Old February 13th, 2020, 07:01 AM #7
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OP here...
The pins were wedged horizontally across the case mouth. I had to use a pick to remove them. Now I'm concerned about neck tension.
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Old February 13th, 2020, 07:09 AM #8
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Stop using the pins. Soap and Water gives you clean brass.
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Old February 13th, 2020, 08:45 AM #9
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Quote:
Originally Posted by squaregrouper View Post
OP here...
The pins were wedged horizontally across the case mouth. I had to use a pick to remove them. Now I'm concerned about neck tension.
You can mic OD of the neck and see if they are far off, I'd imagine they all wouldn't have gotten pins stuck sideways.

Are you using a neck bushing die? If so, you could use a tighter bushing .003 tighter than normal and then open the necks back up with an expander ball.
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Old February 13th, 2020, 09:02 AM #10
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Thanks Ky, for talking me out of stainless tumbling(for the hundredth time ).

I have a small wet tumbler that I use for cleaning suppressor baffles. Works pretty good. I tried some 9mm cases in it and it just seemed like a lot more work than dry tumbling.

I'm gonna stick with walnut dry tumbling.
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