All batteries will arc. In order to run 0.2Ωcoils on a Reo for any period you will likely need to clean and mess with your contacts (even the new ones - the gold ones) more than you prefer.
I've melted all the buttons, even the new PEEK ones, such that the firing pin is embedded in the button!
hehehe!
I modify all my Reo buttons now by attaching sacrificial metal to them, whether that's by drilling a pilot hole and putting a small screw in there (better), or by epoxying a rivet head on top. If you do something like this with a TRA Reo, i suggest you research the chances of it shorting to the side of the mod.
But i have done this for over a year with no issues on a powder coated black Grand.
It looks something like this - file down ruined button and off you go. L-R, pull rivet apart, upside down top, painted top, epoxied on button. Painting the tops is a waste a time, even with high temp. paint, but i was picky back then.
T