Range day with my 358 Norma Magnum

Shooting my cast Accurate 36-310w 310g slick side cast bullet. I loaded these with the help of Quick Loads watching a few things like pressure @ my targeted velocities. Then I backed off a full 5g and worked up.
QL said I should be 1800 fps ish. I was 2000 +fps!!! Max attainable with in my max of 40K was 2300 fps. According to QL.