Texasflyboy;
You cannot safely use semi-wadcutter data for full wad cutter bullets. The deep seating of full wadcutters will raise pressures exponentially!
On the other hand, I don't understand Alliant's data for a 240 gr SWC with Unique AT ALL. That data is more at the level of SAAMI .44 Special level than .44 Magnum levels. Makes no sense at all.
At any rate, I have chronographed the Group Buy 200 gr dbl ended Wadcutter in my .44 Special:
5.0 grs of Red Dot gave an average of 878 fps.
For target work I reduced to 4.0 grs. As you can see (even tho' the bullet is considerably lighter than yours, that it doesn't take much powder with a full wadcutter). Your original charge of Unique was WAY overboard. I am glad you didn't hurt anything.
FWIW
Dale53