Sitting on my reloading bench was a piece of 7mm Weatherby Magnum brass which had suffered through a previous experiment resulting in a collapsed shoulder. (I don't own a 7mm W'by; it was just a random piece of brass.)

Well, I decided as how there "weren't any belted pistol cartridges" (found out later how wrong that was), I'd just cut that piece of brass down and invent one. It was cut to the OAL of a .454 Casull with the reasoning that it had to fit into an existing platform. The case mouth needed to be reduced a bit in order to hold a 300gr .458" lead bullet. Once that was done, I popped it in my pocket to haul out now and then for unsuspecting folks.

When asked, "What in the world is that?", I'd tell 'em, "It's a 46 Texas Ranger." The next question usually was, "What the hell is a 46 Texas Ranger?" Then I'd relay the story of the Ranger who was asked, "Why do you carry a 45?" To which he replies, "Because they don't make a 46."

If I only had some .50" projectiles, I'd have been only a few years too late to the party.

Then he told me 440gr. TC over 10 gr. 231 @ 1,000 fps was the most accurate load he had found, after exhaustive tests.

http://mountainmolds.com/

NOE also makes .50 caliber moulds:

http://noebulletmolds.com/

http://accuratemolds.com/catalog.php?page=14

I see some 440 gr gas check molds. I see a ton of molds for the 500 S&W that are too long, the nose is wrong, John Ross designs, etc. Or I see great looking molds for the 500 Linebaugh. Nothing yet that is what I want. I've chacked LBT, N.O.E., Mountain Molds, RCBS, etc.

Maybe I should contact Bob Baker.