I wouldn't recommend that particular model (granted I don't like any of the tascos, but I must admit that 2 of them are actually fine - or at least were before the company went out of business.)
As for this particular model, I have seen it fail when mounted on a .270. Specifically, the scope simply would not hold zero and tracking was sloppy. A slug gun kicks more than a 270. As such, I wouldn't recommend it.
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