I have a 6.5” Ruger Blackhawk 41 Magnum. Up until now Ive only ever shot 7.5-8.0gr of unique with 215gr cast SWC bullets. I wanted to put together a hunting load for it with 210gr XTP’s. Using the Hornady manual, I chose loads that were supposed to be going 1250fps and loaded up 6 of each. They included 14.7gr AA No7, 17.0gr AA No9, 18.4gr 2400, 21.1gr H110, and 20.5gr IMR4227 (max load 1200fps). The results were interesting. 2400 shot the best and were going 1398fps. AA No7 and IMR4227 shot well, but not as good as 2400. AA No7 was 1338fps and 4227 was 1264fps. AA No9 and H110 were the least accurate of the 5 loads. AA No9 was 1317fps and H110 was 1407fps.
I haven’t decided exactly which direction I am going to go next but I think I’m going to play around some more with 2400.
JTD