Rowdy, Just found this post so I hope this isn't a repeat. John Taffin gave me a load years ago for the 66/73s with Unique that he said was the most accurate load he came up with for the 225 gr. bullet...8.0 gr. Unique, just as you have found with the 200+- bullet. He even has it posted on page 232 of his book, Gun Digest Book of the .44. I have personally used a 9 gr load of Trail Boss with 200 gr. bullets in 44-40 with no adverse affects. HOWEVER, if anyone tries this load w/o working up to it, they are doing so at their own risk. This load in my 66 will thump targets at 600 yds but don't have specs, ie. velocity/energy.