Nickle Silver is recognized as the best bet. Not as conductive as the other 2 but as the OP noted the oxide is actually a better conductor than clean rail. It’s still better to keep the rail clean though. The oxide can attract dust and dirt.
Nickle Silver is recognized as the best bet. Not as conductive as the other 2 but as the OP noted the oxide is actually a better conductor than clean rail. It’s still better to keep the rail clean though. The oxide can attract dust and dirt.