You don't want a carbide chain .First of all it's slow as a snail, plus it has to be machined sharpened .Most of all just one loop of it will cost more than a whole roll of regular chain .
About the chain ,you want semi chisel .You have to know the pitch and gauge of the chain though,you can't just guess at it .To get the pitch measure the length of three rivets from the center of the rivets and divide by two .To get the gauge measure the driver with a set of micrometers .
My guess if it's an old timey Pioneer it likely will be .404 by .063 . If that be the case Baileys has a close out on that size at this very minute .
