This is a bit more complicated then one would think to provide an accurate response to your question. The reason being is that Richard uses several differnet jacket designs on his ULD bullets depending on caliber and weight of bullet.
Some of his jackets used on the ULD HP designs are the same jackets used on the Berger match bullets, the J-4. Now I also know Richard is trying to get away from these jackets because there have been some issues that have casued some problems that are a result of this light jacket.
He also has some heavier tapered jackets that he uses on some of his calibers that are much better suited to big game hunting.
So to answer your question best I can, some will act exactly like the commerical match bullets while others will offer much more traditional big game bullet terminal performance on game.
The best thing to do would be to drop Richard an e-mail and ask what jackets he would recommend for your specific use and he would get you exactly what you needed.
As far as his BC bullets. Yes they are lower in BC then his ULD RBBTs but not by as much as you would think. These are stout bullets and the only thing I have seen with these is that at times, in smaller calibers, they are actually overly stout.
Again, best thing is to contact Richard and tell him what you have and what you will be shooting and at what possible ranges, from the muzzle to X yards. Then let him recommend what he feels would serve you best.
Like you said it is all dependant on the game targeted with the bullets used. His Heavy ULD HPs are great for any deer size game even at closer ranges.
Just drop him a line at firstname.lastname@example.org
Have a great day,