I used them for years in both the 45 and the 50, They are one of the best all lead bullets for general shooting and deer hunting, the only reasonable priced conical that compares is the Hornady FPB the Thors are very good but you have to match the size to each gun and the price is truly excessive almost as bad as the power belts.
Molding your own, since I do not know how much molding you do i will mention some basics.
You need to "flux " the melted lead to get the impurities out, I use bees wax a small lump about the size of the head of a big hat pin it will smoke a bit and bring the impurities to the top so you can skim them off.
Also when the lead is up to temperature hold the corner just the corner of the mold in the melted lead until it reaches a good temperature. for casting this will save molding a lot of wrinkled bullets to get the mold hot.
BE SURE THERE IS NO MOISTURE IN ANY MOLDING EQUIPMENT if there is the steam will blow hot lead all over.
The load: In my guns they usually shoot with from 70 to 90 grof powder.