This being the 'Heeled' Bullet, and the old Ideal Mold Number of 386 refers ( counter-intuitively ) to the Heel diameter...while major Diameter is about .406 or so...163 Grain Bullet.
Any make Mold for Casting this Boolit would do!
Looks like this -
Hosted on Fotki
Hosted on Fotki
Also looking for Brass or old Cartridges for the .41 Colt Short, usually Head Stamped as "41 S D A".