Estimate chamber pressure and muzzle velocity for the 416 Weatherby Magnum with the free, in-browser MyLoads internal-ballistics simulator. The figures below are illustrative estimates from a physics model — not a recommended recipe. Always cross-check a current published loading manual.
| Maximum average pressure (MAP) | 53,500 CUP |
|---|---|
| Nominal case capacity | 120.0 gr H₂O |
| Groove / bullet diameter | 0.416 in (10.57 mm) |
Muzzle velocity
Peak chamber pressure (interval, ±10% burn-rate)
maximum average pressure for this cartridge is specified as 53,500 CUP (CUP is not directly comparable to this psi estimate)
Illustrative example — every figure here is an estimate and can be wrong. Always consult a current published loading manual, and never trust these numbers on their own.
Open the 416 Weatherby Magnum in the MyLoads calculator →