I've long wanted a 336 in a long pistol caliber, and been told consistently it can't be done, at least reliably. Now I have a single shot in 445 SuperMag and would be a very happy man to learn I could get a custom 336 in that caliber. 454 would work also, but is shorter and higher pressure. The 445 is just a stretched 44 mag. If the 44 works OK, it seems to me the extra 1/10 inch in length (about 2" loa) might be even better. My ideal rifle would be with nice wood, good fit and finish, and oct barreled, so a new bbl would be needed but I might not be that picky if I found I could do it at all. Wonder if the 44 could just be reamed 1/10 and carrier adjusted to feel reliably. I don't mean to be just re-asking the same question, but this thread has given me hope. Many thanks.