As above
Have just trotted downstairs and tested all my Cal BB/4.5mm with a neodmium speaker magnet on a stick with which I normally clear up my Cal BB with when I have had a mad splurge blowing Beer Ahem! Pop cans to bits,
being hollow spherical copper coated steel they all stuck to the magnet??
Brands
Crossman Copperheads and SMK Golds all Cal BB/4.5mm,
The plastic ones were non magnetic, Phew! the Home Made Sloe Gin is not to blame after all
I am more into lead slinging but more than willing to be led astray,
So a Pm explaining 6mm technology, Dan Wesson/Hop Up
Would be Welcome,
Bernard.
So saying,
Are 6mm ally etc