6.5 CM shooting your choice of ELD-X or -M with an impact velocity of >1800 fps gets my vote. My sample size is relatively small (two WT, two elk, a bobcat, a javelina, and a ~100lb pig), but as of today I’m stupidly impressed with that combo. I know a 13 year old girl who's got countless whitetail, an oryx, and several African plains game species with it too and all have been drama-free, as far as I know.
The recoil is laughably tame, I like being able to spot impacts sub-100 yards, I like that I can get a new shooter/hunter behind the gun and know they can handle it, and I can’t argue with the results
I’ve had.
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Elk shoulder exit - through onside shoulder and this hole was with the offside quarter removed. The hole only extended partially into that shoulder.
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whitetail exit - crunched onside shoulder, exited behind offside shoulder