Can anyone explain the different types od 38 Special Wadcutter brass?

CZ93X62

Official forum enigma
Roger that, Chargar. A small thing, but chemical weirdnesses are off-putting. Too many drug labs in my past life, I guess. I have never seen Unique or 2400 cause that in my tools.
 

RicinYakima

High Steppes of Eastern Washington
The new made Alliant Bullseye is listed at 30-40% nitroglycerin in its composition, and Unique at 20-30% and 2400 at 5-10%. It is the nitroglycerin that dissolves the plastics in powder measures, at a rate dependent upon temperature and humidity. Double based rifle powders tend to have such heavy deterrent coatings, that the powder doesn't etch the plastic. Never a good idea to store powders in anything but the original containers.
 

Charles Graff

Moderator Emeritus
The new made Alliant Bullseye is listed at 30-40% nitroglycerin in its composition, and Unique at 20-30% and 2400 at 5-10%. It is the nitroglycerin that dissolves the plastics in powder measures, at a rate dependent upon temperature and humidity. Double based rifle powders tend to have such heavy deterrent coatings, that the powder doesn't etch the plastic. Never a good idea to store powders in anything but the original containers.
In 53 years of reloading, I have never left any powder in the measure overnight. I was told early on not to do that. Not to prevent damage to the masure, but as a safety measure, not to forget which powder it was and what can it went in.
 

Petrol & Powder

Well-Known Member
There is only one can of powder on the bench at a time. It is a simple rule and a foolproof method to avoid trouble.

Like Charles, I typically empty the powder measure when I'm done. On the rare occasions I do leave powder in a measure, it is in a measure that is labeled for that powder AND the only can on the bench is the can for that powder.

I NEVER have more than one can of powder on the bench. Whatever powder I'm working with, that's the can and only can, on the bench.