I did exactly that, and it worked perfectly. I bought a Tacticool stock for my tapered-barrel F model MkII. Surprisingly, when you measure the "tapered" sport barrel, you'll find that only the last 5" (to the muzzle) is tapered - the rest of it is straight. Plus, the tapered barrel is very close in outside diameter to the bull barrel. The net result? Less than 1/16" extra gap between the barrel & stock, where the bull barrel is visibly free-floated anyway. Without measuring it, you'll never see the difference in gap between a bull barrel & a tapered one in its fit to the stock.
Here's the only picture I could take where you could even see the gap...
Go for it & enjoy!
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