Load data for .458 Lott + 420gr Impala RNFP KO
504 suitable loads across 85 powder(s) for cartridge .458 Lott with 420gr Impala RNFP KO bullet.
The most recommended powders for this combination are Hodgdon CFE223, Alliant Power Pro 1200-R and Winchester 748.
Based on C.I.P., the max. allowed case length is 2.800 in / 71.12 mm, the max. cartridge length is 3.600 in / 91.44 mm, and the max. allowed pressure is 62,366 PSI / 4,300 bar.
Based on C.I.P., the max. allowed case length is 2.800 in / 71.12 mm, the max. cartridge length is 3.600 in / 91.44 mm, and the max. allowed pressure is 62,366 PSI / 4,300 bar.
Load Specifications
ImperialMetric
Cartridge:.458 Lott load data
Case Length (L3):2.800" | 71.1 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.613" | 15.6 mm
Case Capacity:110 gow | 7.13 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):62,366 psi | 4,300 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:Stabilizes in any common twist
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