Found this elsewhere, thought I'd pass it on. QL results. Looks like 45.5 is at the edge at about 60K.
Code: Cartridge : .338 Federal Bullet : .338, 210, Nosler PART SP 16337 Useable Case Capaci: 48.541 grain H2O = 3.152 cm³ Cartridge O.A.L. L6: 2.820 inch = 71.63 mm Barrel Length : 22.0 inch = 558.8 mm Powder : IMR 8208 XBR
Predicted data by increasing and decreasing the given charge, incremented in steps of 2.0% of nominal charge. CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time % % Grains fps ft.lbs psi psi % ms