Going out on a limb! Don't cut it off!
OK, I've acquired some of these bullets and I think they are going to very interesting to work with...I need, however, starting load data using Unique, WW231 or ???. Can anybody help?
OK, I am going to assume that your caliber is 45 Colt. It is in the title of your post so.......
Here is what I would do. I would take the data from any other bullet in the same weight class as a starting point. Not a starting load point, a starting point for the calculation that I am about to explain!
Take the information gathered in the research given above and see how much of the bullet in the data is in the case. That is called "seating depth", this is critical, friend. Compare that to the bullet you are going to seat. If the bullet you are going to load has more of itself in the case, then reduce the load by .2 or .3gr for every .030" that the bullet enters the case. Now, all of this depends on what powder you are going to use but with most fast powders this will work. Start low and work up
WITH A CHRONOGRAPH!
If you don't have a chronograph, stop and get one. They are cheap compared to eyes, ears, noses, friends, loved ones, etc. It is the only tool we handloaders have to see what our loads are doing. Case in point: Your new wadcutter load seems a bit snappy. You go ahead and load them and continue to shoot them. One day, you do run them over a chronograph and find out they are doing 2000fps from your 4" barrel! You have been shooting them for years at that point. It might have been good to know that when you were working them up. Then, you switch to a pot metal gun. It cannot withstand your fantastic loads and blows up. Your wife is standing nearby, do I need to go on?
Another thing to do is call the powder company and see what they suggest. Ben A. from Alliant is a great guy to talk to. Hodgdon folks are only too willing to help. The Accurate Arms ballistician is/was a little hard to understand, he is of some foreign ancestry and has an accent. He will help though and is very willing to do so.