Crack in VH barrel?

[charlie cleveland]

thanks EDGAR i d always heard it called magna fluxing.... now maybe i can remember its iron filings and not magnesium...but any way it would be a cheap way to check for cracks in a gun barrel....charlie

[edgarspencer]

Magnaflux is actually a trade name of the MQS Co., (stands for magnaflux quality services) but the 'magna' stands for magnetic.
You mentioning magnesium reminded me how I got my a$$ kicked for playing with it in high school chem lab. Funny I remembered that and not anything important.