I've seen that site. I think the Pedersoli mold produces a rather lightweight bullet of 170 grains compared to the originally discussed, in 1847 at least, conical numbering 32 per pound, or 219 grains each. It would be interesting to see if the 2nd/3rd gen Walker molds produce a heavier conical than the Pedersoli mold.
BTW Steg you would be mighty welcome down Tejas way, ceptin theres no water and its too hot in the summer. If you happen to have an original conical mold for your own Walker, could you possibly put a micrometer to it to measure the OAL and max diameter. I have some profile pics from the web and if I even just had the OAL I could estimate other dimensions. From my research, and as the late Mr. Rapley probably mentioned to you back in 2003, the original conical molds for the Walker are 10 times as rare as the revolver itself, only 1 single conical mold having been delivered by Colt for every 10 of the 500 military marked Walkers shipped to Mexico. Thats why I frequent estate sales, antuque shops, gunshows, etc. here in Texas alot, looking for both old .44 single and six cavity conical armory gang moulds. You just never know what you might run across, like that conical brass gang mold I came across in Bexar last year I mentioned to you.
I might just check with the curator of the Texas Ranger Hall of Fame to see if they have an original they can measure.