Cleaning Bullets?

Ron Wood · 01-26-2014, 08:54 AM

Looks like that might be old "punch crimped" 7.63mm D.W.M./KK/403 ammo?

rhuff · 01-26-2014, 04:10 PM

Marc,

That old myth that tumbling cartridges will change the internal powder/burn rate has pretty much been proven incorrect. At least that is my understanding .Some folks took some freshly loaded ammo and tumbled it for 48 hours and then ran it over a chrono against identical, non-tumbled ammo, and the velocity was identical. No pressure spikes.

If those old cartridges were mine, I would put them into my tumbler with corncob and brass polish and give them a good cleaning. Some handloader use a liquid car wax, like NuFinish(cheap to buy) in their corncob media, and they feel that it not only cleans the brass, but it deposits a coating on the brass that help keep it from tarnishing so quick.

I have tumbled loaded ammo for many many years with no deleterious effects to me or my ammo. YMMV

LU1900 · 01-26-2014, 05:12 PM

Quote:

Originally Posted by Ron Wood

Looks like that might be old "punch crimped" 7.63mm D.W.M./KK/403 ammo?

/
Nambu ?
But never use tumbler for cleaning : this increases the power load !!

Pistole+Parabellum · 01-26-2014, 05:25 PM

Quote:

Originally Posted by LU1900

/
Nambu ?
But never use tumbler for cleaning : this increases the power load !!

yes correct; 8mm Nambu bullets

01-26-2014, 08:54 AM	#1
Ron Wood Moderator 2010 LugerForum Patron Join Date: Jun 2002 Location: Santa Teresa New Mexico just outside of the West Texas town of El Paso Posts: 7,056 Thanks: 1,130 Thanked 5,302 Times in 1,733 Posts	Looks like that might be old "punch crimped" 7.63mm D.W.M./KK/403 ammo? __________________ If it's made after 1918...it's a reproduction

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01-26-2014, 04:10 PM	#2
rhuff Patron LugerForum Patron Join Date: Mar 2011 Location: Az. Posts: 2,316 Thanks: 2,767 Thanked 1,000 Times in 735 Posts	Marc, That old myth that tumbling cartridges will change the internal powder/burn rate has pretty much been proven incorrect. At least that is my understanding .Some folks took some freshly loaded ammo and tumbled it for 48 hours and then ran it over a chrono against identical, non-tumbled ammo, and the velocity was identical. No pressure spikes. If those old cartridges were mine, I would put them into my tumbler with corncob and brass polish and give them a good cleaning. Some handloader use a liquid car wax, like NuFinish(cheap to buy) in their corncob media, and they feel that it not only cleans the brass, but it deposits a coating on the brass that help keep it from tarnishing so quick. I have tumbled loaded ammo for many many years with no deleterious effects to me or my ammo. YMMV