I haven't looked up the thresholds for each round, but judging by other similarly constructed rounds, TMK won't fragment as far downrange as GD will expand. It's (TMK) also NOT a hunting round unless you're only going for head/neck shots.
Euro, for a 10.5" or 11.5", I'd go for the 62/64 gr. version of GD and not look back. If you see Docs recommendations, with a good bonded round, you don't need the heavier bullets.
ETA: just saw the two updated posts above mine. Euro, I've hunted with 70gr TSX out of a 16", and while it does the job, I would limit it to 100yds (even though I have made a kill at 365 yds - but it was a headshot). I've since built a 308 for my hunting needs.
My recommendation above of which I would chose, still stands either way.
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