Ok so I worked up a load for my SPS Tactical .308 w/ 20" 1-12 twist. I am using 178 gr AMAX, win brass, CCI200s and Varget. I worked up from 41 grains to 43.5 going up in .5 increments at the 100 yard range. The tightest group was a 3 shot at less than an inch (42 grains Varget) as I got above 42 grains they opened up. Ok so now to my question. I went out to my long rang spot today and I was able to make 5 shot groups on rock faces at less than 1 MOA from 300, 511, and 916 yards. Using my Shooter app I figured out my loads are at about 2450 FPS (at 500 yards I had to dial 4 mils). My question is this too slow or should it be fine. I was thining about taking this gun out for some long range antelope hunting in Wyoming this year and was wondering what the farthest I could make a clean kill on a goat with this setup. AMAX G1=.495. Oh and I was pretty proud of myself cause I shot fairly well considering the wind was gusting from 8-27 MPH. The shooter app is awesome and so is the Vortex Viper Tactical.