I loaded some 429421 pc boolits over 8.5 grains of unique and the velocity was a good bit higher than I was expecting. 1052 with a 10 shot string mixed head stamp brass and a sd of 11. This is out of a 7 1/2” Super Redhawk. Well above what my Lyman book said. Have y’all ran into this before? I seared to the crimp ring.