Hornady customer service was nice enough to email their data for the 240g XTP when I was working up that bullet for my Marlin 1894. I worked up to best accuracy with 2400 @ 1740 fps in my rifle. It shoots well, attached is my 50 yard sight in target from this season, the XTP performed perfectly on a quartering mule deer at 90 yards for me during the season.
The two powders I always see good results reported for are H110/W296 and 2400. I personally like 2400, but that's no knock on any of the others. I use standard LP (CCI 300) primers without issue with 2400.
I also shoot cast and have found the barrel runs large, .431, in mine. Talking with others with later manufacture 1894's in 44 mag this seems to be not uncommon. I've found the .430 XTP to be somewhat more accurate, probably because of the better barrel fit and rifling grab, than the .429 bullets I've tried. Also, all other things being identical, I find a significant increase of velocity with the .430 XTP, an average of 120 fps, over the .429 bullets I've tried, possibly for the same barrel fit reason.
Basically what I'm saying is...good bullet. Follow the loading data and track velocity with a chrony if you can, find the accurate load and it'll do what you need it to.