What caliber do you use for Elk?

[BigBassaholic]

In the past years, I have knocked down 2 elk with a 6mm w/90 grain bullets... shot placement is everything.... they took 2-3 steps and fell over.. then 1 with a win 300 mag 180 grain bullet. Last years spike dropped with Browning 270 wsm 150 grain... Shot placement, shot placement, shot placement....
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