acuratemolds.com will make any mold you want, except that he doesn't yet do the core molds necessary for a hollow base (or hollow point).
I liked the results I got in the '58 Remington using the Buffalo BallEts. They're a semi-hollow base with a round ball profile at the tip and weigh about 180 grains (roughly 40 grains more than a round ball in .44). Remember that any bullet that isn't shaped like the end of your gun's bullet ram is probably going to be distorted upon loading. The Lee 450-200-1R is good too, but I got much more velocity using the BallEts, with the same powder charge.
I've thought of getting a mold made with that semi hollow base, and a wide meplat, for a weight of between about 200 and 240 grains, for the Remington. That meplat would suggest a new bullet ram for the gun, but such would not be terrribly complicated to turn out on the lathe.
Your bullets for C&B should also have the heel base (rebated base) so they'll drop easily into, and square up with, the chamber prior to ramming. That's how the originals were made.
Buffalo Arms in Ponderay, ID (different company from above) makes a heel base conical mold specifically for the .44 revolvers, though I haven't tried it, and also one that should work nicely in the .36s.
If you have the Pietta Remington .44, it probably won't take most conicals at all unless you open up the frame around the cylinder arbor on the right side, and under the ram, so the bullets can rotate under the loading ram without hanging up on the frame. I absolutely had to do that with mine. Obviously, Pietta isn't copying the originals exactly, at least not with their standard (i.e. cheap) '58s. Conicals were quite widely used in these guns back in the 1860s.