The 160 GKs were designed for deer and also to handle elk, although Sierra doesn't really recommend them for elk. They'll still expand pretty fast on deer if it's a close range shot.
The 140 GKs are designed just for deer, and combined with a 7mm RM they can completely fragment unless the shot is over 200yds.
If you're worried about meat damage a bonded bullet might be in your future.
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