Ditto what shootall said. I used W-296 under a 240gr XTP MAG , shot great.
My only question to ya....are you experienced with a 454 ? They can have a pretty good thump. If your new to the 454 , perhaps use some 45 colts before graduating to the 454. Ya can load up the 45s pretty good in a SRH, far heavy enuf for deer. After I got over the "need for power" thing , I loaded mine ( 454 brass ) with the 240 gr XTP mag over 2400 , to I believe near 1600 fps....sort of a mild load for the 454 , again shoot good , plenty of power and not quit so hard on the hands. Good luck
regards irold