Hornady Handbook
55 grain spire point
4198 powder 21.2, 22, 22.8, 23.7, 24.5 grains
BL-c2 powder 24.8 ,25.7, 26.5, 27.3, 28.2
4895 powder 25,25.9, 26.8 27.7, 28.6, 29.5
That will be a start. Start low and work up, look for signs of pressure. You know the drill. Twyman