Smellydog
Well-Known Member
I don't know what tolerance they work to.I really doubt that would be the case ('scuse the pun) 70/30 Cu/Zn is the usual mix for cartridge brass...it has the required properties for deep drawing...the alloy percentages are too easily checked, and if you were a supplier would you risk your future business by supplying what must be a major customer with out of spec products?
Alan
It could just be the speed of the machinery.
Who knows......