My much older colleague hunters said they used to shoot european foxes with FMJ in the old days. Long story short: if hit, they die eventually, but can run away up to 200 meters, so plenty of tracking for not much blood and can end up in the thickest bush imaginable (most shots with 7x57 - don't know bullet weight).
So it definitely can be done, just be prepared for some serious tracking.
IMHO
aiming for the spine should prevent You for several hours tracking adventure
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Rather than 147 (or 150) I would go with 180 grs for this.
I agree with
@shootist~ : the blunt nose could be way to go
But must say that in general I do not like much such experiments -
I personally aim for the cleanest and fastest kill possible to minimize suffering - so expanding bullets is THE WAY
p.s.: I think I saw a cutting edge recommendation .... don't think this is a good idea - several people told me it is a good recipe to turning fox into the red mist with chunks of fox laying around ...