Tumbling ANY powder, ball, spherical, or extruded, is VERY, VERY, DANGEROUS. Why? For two reasons:
1. There is a coating on all powder types called "deterrent" coating. The purpose of this coating is to establish the burn rate of that particular powder as well as to preserve the powder granule in it's original shape and consistency. (It's almost like the candy coating on medicine which determines the absorption rate and allows it to disolve at the correct rate)Tumbling destroys this coating!
2. Tumbling breaks the powder down into a fine powder. This DRAMATICALLY increases the burn rate and pressure to dangerous levels, and especially in an older gun. Breaking up the powder granules also has the effect of decreasing the volume of powder in the case and this subsequently increases the air space in the case. This in itself is a dangerous situation.
Now, anyone smart enough to understand this should be smart enough to comprehend the danger. That being said, anyone that tumbles live ammo and then shoots it deserves to have their gun and their face permanently disfigured as a reminder of how STUPID they were!
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Last edited by RL357Mag; 05-06-2009 at 04:49 PM.