ginge,
I think you will find that the 32-40 used a 165 gr .320-.321" bullet. Full length insert barrels are available in 8x58R, which is similar to 32-40 in both case shape and ballistics. I don't think K&S has them, but Zimmerman does.
Mike

Last edited by Der Ami; 02/19/18 01:29 PM.