In my limited experience I have found that faster powders with the same weight bullets seem to be "snappier" in recoil while getting nowhere near the velocity of the slower powders.
If it were me, and I have done this, I would look to a different powder than Unique for these kinds of loads. I would use SR4756. Better metering and with older data will out perform Unique for your application. Believe me, I have done the tests.
As a suggestion though, don't try to work up loads without a chronograph. You have absolutely no way of knowing whether you are getting over the edge or not. I'm not saying that the loads you are using now are, not at all, but how will you tell when you do go over without a chronograph?
A simple tool for under $100 from most sources.
FWIW
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