Re: the best long range varmint caliber
Have done quite a bit with prairie dogs at distance. The bigger bullet the better. The 6mm with the vld type bullets are ok but not great. Under ideal conditions the 6br with long bullets is good, but seldom do I have that kind of conditions to shoot on the prairie. I have used 22-250 ack. w/80-90 gr.,6br w/105, 6mmack w/115, 6.5x284 w/140, 7stw w/120-180, 300 w/185-210.
The small stuff is fun to play with but for consistent hits on small targets I prefer 6.5 or bigger.