Bigtimer,
Where do you live? Do you know anyone in your area that has experience with ML'ers that can help out? Maybe someone on the forum lives in your area and can help out.

As for loads, if your going with something in the 250 to 300 grain range, 90 to 100 grains of powder should put you into the 1700 to 1800 fps range which should be enough to give you a 5" point blank range around 150 yards with enough energy to get the job done. In my 14yo son's regular Optima shooting 80gr of Pyro P and a 250 Shockwave he gets around 1650fps. With it zeroed at 125 yards he is 2.5" high at 75 yardsanddown 3" at 150yards. Energy at 150 is over 870fp.With a 300 grain SW and 100 grains of powder it's around 1750fps, it's about 2.5" high at 75 yards and down1.5 at 150 yards. Energy at 150 is over 1200fp. I prefer the 300 myself but the 250 may be better for your back.

Good luck on your load and your hunt.