IMR book load:
7.8 gr 800X, 1130 fps, 32500 psi, 5"barrel, Rem case, Rem 2 1/5 pri, 200 gr XTP, 1.250"
My G20 load work up:
200 gr BB FP .658" long bullet, WLP, Bar Sto aftermarket barrel with better case support, 14.2 gr 800X made a small case bulge, stop, which is 82% over