10-15-2023, 11:42 PM
I'm running about 2750 fps with 100 gr. projectiles. Makes them good to about 300yds. The Grand Slams have a simi pointed shape, so 200 t0 250 is about max range with adequate energy for antelope and deer. My Howa has a 20" barrel. You will not likely get 2700 fps in an AR, so range is even less. The big problem here is the wind, you'll have a lot of wind drift at those speeds. I've shot a fair number of antelope with a .243 Winchester. It works to about 400 yds when the wind isn't blowing hard.