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222 Remington Load Data & Ballistics Calculator

Estimate chamber pressure and muzzle velocity for the 222 Remington 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.

222 Remington reference

Maximum average pressure (MAP)50,000 psi
Nominal case capacity27.0 gr H₂O
Groove / bullet diameter0.224 in (5.69 mm)

Example simulation illustrative

Bullet
Hornady 0.224 52 gr A-MAX
Powder
Hodgdon H322
Charge
21.5 gr
Barrel
24 in

Muzzle velocity

3,013 fps

Peak chamber pressure (interval, ±10% burn-rate)

36,590 – 48,051 – 61,307 psi

nominal is 96% of the 50,000 psi maximum average pressure

This sample load runs near the maximum average pressure for the 222 Remington (about 96% of MAP at the nominal estimate; the upper interval can exceed it). It is shown only to illustrate the simulator — reduce the charge and work up from your manual's start load.

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.

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