Copper Fouling and Tin

M

Marco Califo

New member
I understand Tin has been added to certain new powders to combat copper fouling very effectively.

Question: Can powdered Tin be added to other powders, by reloaders, to achieve the same effect?

And if so, where would one obtain powdered Tin?
 
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Thank you for that. A little light reading for Sunday afternoon!

That patent calls for, paraphrasing, applying a surface coating of tin dioxide via isopropyl alcohol and evaporating off the isopropyl. Which is more work than I had in mind. Mixing tin into the grain (rather than surface coating) did not have the desired ballistic benefit (which were not about eliminating copper fouling).
"the tin dioxide must be less than about 325 mesh, U. S. Tyler screen, or in other words less than about 44 microns."

So, my question is refined to: if powdered tin dioxide (to spec above), could be shaken dry with, for example H335, and have the anti-fouling effect.
 
You have no idea what burn characteristics, if any, may be affected by such action. Don't mess with it. Leave that to the experts.
 
that's an interesting idea. I would do the testing on a small pistol caliber first, loading slow, preferably a revolver that can use powder-puff loads. get a chrony and compare the tinned powder to standard powder and see if you are getting any different burns, check cases and all that. then start moving into higher pressure territory. if you see the tin isn't affecting burn, then you would have to figure a way to test if it is actually deterring copper fouling or not, probably more difficult to figure out. but I like your thinking since you can never find any of the CFE's on the shelves
 
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