I'm preparing a 7mm Rem Mag load of 65.9 grains of RL22 behind a 168 gr. Berger VLD Hunting bullet, seated .02 off the rifling. Norma brass. Federal magnum primers. Twenty Six inch Hart barrel. I have no chrony, and I'm guessing 3050 muzzle velocity for this load. What's your informed guess as to the muzzle velocity?