klallen
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i've heard that being one of the two reaons why folks would tumble their loaded ammo. my thinking is, if there's that much excess lube that needs to be removed post assembly, you're using way to much lube then is necessary.
other reason i've heard, incidently, is folks who've purchased factory ammo that's been in the box a bit longer then normal and has tarnished or blemished for one reason or another. i purchased some old uzi factory stuff for my .41ae that's similarly blemished or tarnished on the case. i'd still not consider a tumble as it's not going to effect cartridge performance in any way.
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| Posted: Mon Aug 10th, 2009 02:04 PM |
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RemMan700
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I always tumble after I size to get the lube off. This discussion came from another site where a guy was talking about how he gets finger prints on his cases after reloading them and wanted to know if tumbling was ok to get the marks off. I suggested that he were latex gloves if it is that big of a problem.
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| Posted: Mon Aug 10th, 2009 02:34 PM |
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klallen
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morning, remman700. did fingerprints on his cases equate to a round that would perform worse because of the prints then otherwise? or was it just someone needing to have "pretty" cases?
i hear that alot with tumbling cases, in general. people want them to "look" good. lol. never really understood the fascination with shiney cases.
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| Posted: Tue Aug 11th, 2009 02:05 AM |
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-6
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Helped my son load some 30/30s and he was going to leave the lub on them. Just could not handle it and started wiping as I took them out of the last stroke. Rewiped them after the crimp stroke and they were pretty clean. wc
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| Posted: Tue Aug 11th, 2009 10:31 AM |
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Bigdog57
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Same here - I simply wipe them after sizing. No problem. 
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| Posted: Tue Aug 11th, 2009 03:52 PM |
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rat31465
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One of the primary reasons I started this thread and sent letters to these companies was for those New to Reloading.
Even us old salts however sometimes get in a groove doing something a certain way and it can be hard to break away from such a routine.
As for tumbling casings to make 'em pretty! I think that cleaner is better, but not for asthetics sake!
A dirty, sticky casing can cause feeding and even extraction problems in more than just auto-loaders.
I prefer clean casing during the inspection process...looking for cracked case mouths, webs etc...
And lastly one of the main excuses I have readfor tumbling loaded ammo is that it is going to be placed in long term storage... If corrosion is a real concern then I believe that a desiccant along with a Moisture barrier bag or container is called for.
At a previous job I ordered from this company in the past http://www.protectivepackaging.net/desiccants-mil-d-3464?page=desiccants
My take on this practice though is that the bad outweighs the benefits.
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| Posted: Tue Aug 11th, 2009 06:22 PM |
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rat31465
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Lapua/Vhitavouria's response from today.
Tumbling loaded cartridges
Tuesday, August 11, 2009 10:44 AM
"Kevin S Thomas" <ksthomas@lapua.us>
Dear David,
Adam forwarded your inquiry to me, and I'll be happy to answer. The short answer is, no, it's not going to cause a problem, but I do want to cover a few things just to be safe. The slightly longer answer is yes, it could. Tumbling of loaded ammunition is a common practice for ammo manufacturers, and it's done all the time. The key is, they don't do it for very long; usually nothing more than required to remove any traces of lube from the loaded ammunition, or whatever else may need to be accomplished. I normally do this with large lots of pistol ammunition if I've bulk loaded them on a progressive press. Again, the key is, they're run for a very short period of time, never more than 10 minutes. You're obviously familiar with powder "construction" and the application of deterrent coatings such as graphite or dinitrotoluene (DNT), and I assume your concern stems from the possible removal of or damage to this coating. Actually, this is precisely how many of these coatings are applied to begin with, and the powder goes through several tumblings during its production. In short, damaging it via this same process is fairly unlikely, especially once the powder is contained in a loaded cartridge.
This said, anything can be overdone. Tumbling cartridges for an excessive length of time, or in too vigorous a tumbler could be detrimental. I can't hazard a guess as to how long this may take, as I suspect there will be several variables coming into play. The bottom line is, minimum tumbling, in as gentle a process as will accomplish the task. For my own loadings, as I said before, I use ten minutes as my own personal maximum, in a vibratory tumbler. Loaded cartridges will likely see much more severe treatment than this in the field (bouncing around in SUVs off road, etc.) so I personally regard this as an acceptable limit.
Longer tumbling times and/or exceptionally rough tumbling methods could, theoretically, create problems. These may relate to the deterrent coatings, or to the possibility of external damage . The potential for accidental ignition via a primer being impacted by an FMJ, that sort of thing. I've never heard of such an occurrence, but I wouldn't discount it, either. The key here is some moderation and common sense.
I hope this answers your concerns, but if you'd like to address anything more specifically, I'd be happy to discuss this with you further. Please feel free to contact us again, anytime. As always, we're more than happy to be of service.
Sincerely,
Kevin Thomas
Lapua USA
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