I can't be exact but if your muzzle velocity is around 2000 fps and you sight in about 1.5" high at 100, you should be around 2.5" low at 150. If it's a little slower, say 1800fps, sight in 2" high at 100 and your still around 2.5" low at 150. No matter what your MV or sight in is, you should go to the range and see what it does out to the distance you consider max that you would shoot so you can see what the load and youcan do.

Have a safe and enjoyablehunt and let us know how it goes.

P.S. nice looking gun you have there.