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.22-303 / .22 Rocket / .22-4000 (P.O. Ackley Data) Reloading Data

Warning! Notes: This is a .22 cartridge made by necking the .303 British case down to .22 without any other change. It produces a cartridge in the Swift or Varminter class as is adapted for use in single shot rifles, and bolt or lever action rifles designed for use with long rimmed cartridges. It was originally designed in Australia for use on Australian varmints and has gained wide popularity in other countries where the .303 British cartridge is common and easily obtained. This cartridge is very similar to many American versions made by necking .30/40 brass. Standard twist: 14". Special twist: 16". (Handbook for Shooters & Reloaders/Vol. 1 - P.O. Ackley, 1962) NOTE: USE THIS DATA WITH EXTREME CAUTION
Be Alert: Publisher cannot be responsible for errors in published load data.
Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS)
48 Cast Gas-check bullet Alliant 2400 Click Here 1800
48 Cast Gas-check bullet IMR IMR-4227 Click Here 1750
45 jacketed IMR IMR-4895 Click Here 3575
45 jacketed IMR IMR-3031 Click Here 3550
45 jacketed IMR IMR-4064 Click Here 3650
45 jacketed IMR IMR-4320 Click Here 3600
50 jacketed IMR IMR-4895 Click Here 3450
50 jacketed IMR IMR-4064 Click Here 3740
55 jacketed IMR IMR-4895 Click Here 3300

.22 Caliber Reloading Data