I have to agree.. if you were going to shoot distances with that rifle and that kind of powder charge you might want to look into a 250 grain Shockwave for the mule deer and a 200 grain Shockwave for the antelope. You will get the maximum range abilities out of that rifle with those projectiles. Of course this is just my opinion, you might shoot the powerbelts and find they do just fine at the long range also and want to stick with that...

I shoot a relative of the Omega.. a Thompson Center Black Diamond XR.