How do you clean old shell casings?

[eliochnb4]

I have been finding a lot of WWII shell casing as of late, lots of 50 Cal and some smaller calibers, and was wondering what is the best way to clean them?

[allank]

A tumbler will make the brass look new , you can find them under reloading equipment.

[Xaquin]

I use a soft bristle tooth brush and warm soapy water for all the brass I've found. Doesn't seem to hurt them too much =)

[eliochnb4]

Thanks, I will prob just go with the brush since they are pretty old and I want them to keep some of their age. Thanks for the tips.

[Xaquin]

You might ask Turtlefoot what he does as he's the resident expert =)