I do believe that I saw that they would fire them somewhere too. I just roll my own with the lee dies and Starline 32/20 dies. I cast some 90 gr .314 SWC and put them over 3.6 gr Unique and they work excellent. In fact, I'm reloading some now, as I plugged a few boxes through this weekend.
I have 6 of these babies and every one of them likes them fine. With the bullet seated below the case mouth, I would suspect that it's probably getting at the 32SW potential. I do know there are guys loading this same set-up at 4 gr unique without any problems, so .....