Heading out to Wyoming on an antelope hunt this Sept /Oct. Looking for rifle advice. 243/9twist, 260/8 twist, 6.5-284/8 twist. Those are my 3 options sitting in my safe. I have both smaller and larger options but chose those being what I feel are best. The 95 bergers shoot best in the 243. The 260 and 6.5-284 like the 140 class bullets. Shots are expected from 200-1000. All 3 guns can achieve the range accurately given environmental conditions allow shots. Any help on best choice for bullet weight/ caliber / cartridge would be great. Thanks.