Start pressure was 1160 (lead/cast bullets)
Note velocity predicated (1,915fps) vs actual (LABRADAR 2,153 & 2155) .. then quit.
Absolutely
nothing I could adjust/alter in QL could come close to accounting for it.
First time ever in 10 years of experience.
postscript: Federal Commercial cases/loads don't show that unexplained mouth/rim artifact (same length cases).
Again, go figure.