Officially these are Lee C358-180-RF. They look a lot like LBTs, but they are not a copy of anything. It's just that anyone designing a 180 grain GC bullet with a big meplat so they will work through lever carbines is gonna come up with pretty much the same design.
Lar45 honchoed the project and the moulds are long gone. He's working with MidSouth to have them offered as a two cavity special order mould.
I waterquench as I cast, lube and GC in a .360 sizer and get no leading up to 2000 fps. My current load is 18-19 grains of WC 820. WC 680 and H-110 work as well but use more powder.
My accuracy is not quite as good as Bob's but it's a lot better than I was expecting, certainly better than anyone is gonna really need out of pistols and pistol caliber carbines.
The interesting part is that everyone reporting back is getting the same results and this bullet is being shot through a lot of different guns.