Paint primer on old weapons?

[G. McCormack]

Acetone will affect certain types of patinas. Organic fats and waxes, gums, shellacs, may become dissolved. Iron chlorides may be washed away. It should not affect iron corrosion products such as goethite and akaganeite. One nice feature is it helps truly dry iron objects, where washing in distilled water can still cause flash rusting. So, it may be an option for you to consider.