Good luck next weekend!!
Yes. I’m using Precision Spherical Buffer. Just like the tri-ball loads. The wad petals are about 0.007” thinner on the BPI wads vs the precision reloading wads. I didn’t go to the trouble to attempt measuring differences between the thickness of the bottom of the cups. Especially since we already know the PR wads withstand tri-ball.
I guess I can cut down some proper PR wads and try those tomorrow.