Last few years I've had a big surprise with one particular gun- 6mmAI Encore. Used it in ID for rockchucks-longest shot 412 yds, AZ-55# javelina-177 yds., WV hundreds of groundhogs, deer from 175 to 400 yds. None of these animals moved.
Mine is unported, recoil is minimal, accuracy supreme with 70, 80 gr. BTs, 85 gr. NPTs.
I'm a big 6.5/.284 fan, but the 6mm has opened my eyes. I don't feel undergunned for any of the above animals. A very pleasant surprise.