TC's early 45s were 1-20 and they changed to 1-28 but i dont know when. A 1-28 is fine for the 200gr XTP. Good for a 350gr conical too. So if it dont like conicals it could be the known QLA problem. They are really too deep and often not cut centered to the bore.
Like i said though 80gr of Pyro should be very close to the sweet spot for that bullet. Not too fast but still more FPE than a 44mag pistol and a 200gr.
Last edited by Gm54-120; 10-10-2020 at 07:53 PM.