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-   -   Tumbling final assembled cartage (http://www.firearmstalk.com/forums/f30/tumbling-final-assembled-cartage-42887/)

hogrider 05-23-2011 11:17 AM

Tumbling final assembled cartage
 
I have read several posts that talk about tumbling the final assembled rounds when reloading. Is there a good reason to do this or is it a waste of time. I would like your opinion.

hnealg 05-23-2011 12:05 PM

I would think that it would be risky. If you are doing this to clean off lube from bottleneck cartridges, the risk involves pointed bullets and primers (the same reason you use only round or flat nosed bullets in a tube magazines) Hand cleaning is a lot safer and not a whole lot more work--a quick wipe down with a clean cloth is all that is necessary.

There is also a risk that the bullets can be forced down into the case which could lead to a higher than desirable pressures. Especially if you don't use a tight crimp.

It just doesn't sound like a good idea to me...

lonyaeger 05-23-2011 12:15 PM

The arguments I've heard AGAINST doing this are the same as in the previous post. If you think about it, the force with which a bullet tip could hit a live primer in the tumbler is probably not enough to make it fire.

The arguments or justifications I've heard FOR doing this are (1) all major ammo manufacturers tumble their cartridges before they go into the box to be shipped out to an eager public; (2) you should see the way military ammo is handled and jostled around in its journey to where it's going; and (3) it's a great way to remove case lube.

canebrake 05-23-2011 12:26 PM

Here we go again.

For the benefit of those new members that have not had the honor of many hard fought battles of tumbling live ammo I have but one suggestion; This is not a campaign ribbon you want to wear!

Been there, Done that, Got the T-shirt.

The Forum's opinion on this subject is not to do it.

hogrider 05-23-2011 01:36 PM

Thanks. I appreciate your response.

robocop10mm 05-23-2011 03:50 PM

While I have never actually experienced a detonation from this practice, I still avoid it. The vibratory action can abrade the coating of the individual kernals of powder altering the burn rate. You may experience excessive pressures in an otherwise safe load.

stalkingbear 05-23-2011 05:33 PM

That's exactly the reason I was going to recommend against it but you beat me to it.




Quote:

Originally Posted by robocop10mm (Post 510277)
While I have never actually experienced a detonation from this practice, I still avoid it. The vibratory action can abrade the coating of the individual kernals of powder altering the burn rate. You may experience excessive pressures in an otherwise safe load.


Mossyoakman3006 05-25-2011 04:45 AM

I may be wrong here but why not just tumble after deprime/resize, then you would get the case lube off and not have to worry bout changing burn rate. new to reloading but seems like the most sensible way to do it?

JonM 05-25-2011 01:59 PM

Quote:

Originally Posted by Mossyoakman3006 (Post 511387)
I may be wrong here but why not just tumble after deprime/resize, then you would get the case lube off and not have to worry bout changing burn rate. new to reloading but seems like the most sensible way to do it?

You end up with pieces of media stuck in the primer. Some primers dont react well to media abrading the primer compound.

The big manufacturers do extensive testing and dont set their tumbling on anything more than a gentle roll through the media. Its much different than the home reloader's tumbler.

What i do is use a 5 gallon bucket put the rounds in the bucket pour in just enough media to bring the level even with the rounds and swirl them gently like a miner panning for gold. This removes sizing die safely and easily. I do about 50 to 100 at a time depending on caliber. If its target or hunting ammo i hand wipe em as im not doing that many ata wack

Mossyoakman3006 05-25-2011 03:12 PM

Before you prime the case, the worst your left with is checking the flash hole and popping out a small kernal before you prime.


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