---

.17 Magnum (Ackley) / .17-222 Magnum (P.O. Ackley Data)

Warning! Notes: Standard twist: 10"; Special twist: 11", 12". The .17 Magnum cartridge is simply the .222 Remington Magnum case necked down to .17 caliber without any other change. It has been showing some surprising results and easily produces velocities of over 4000 fps with the 25 grain bullet. It seems to be best when loaded with powders of medium burning rate such as 3031. The following loading data was developed in one test rifle which means that the maximum loads listed may be too hot for some other rifle. It is obvious, however, that it is possible to safely use loads in most any rifle and develop over 4100 fps with the 25 grain bullet. Barrel length of test gun: 25". (Handbook for Shooters & Reloaders/Vol. 2 - P.O. Ackley, 1966) 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)
20		IMR	IMR-4198	Subscribe	4233
Remarks:
20		IMR	IMR-4198	Subscribe	4255
Remarks:
20		IMR	IMR-4198	Subscribe	4326
Remarks:
20		IMR	IMR-4198	Subscribe	4762
Remarks:
20		IMR	IMR-3031	Subscribe	4148
Remarks:
20		IMR	IMR-3031	Subscribe	4165
Remarks:
20		IMR	IMR-3031	Subscribe	4348
Remarks:
20		IMR	IMR-3031	Subscribe	4484
Remarks:
20		IMR	IMR-3031	Subscribe	4672
Remarks:
22		Norma	N-203	Subscribe	4048
Remarks:
22		Norma	N-203	Subscribe	4133
Remarks:
22		Norma	N-203	Subscribe	4255
Remarks:
22		Norma	N-203	Subscribe	4426
Remarks:
22		Norma	N-203	Subscribe	4505
Remarks:
22		IMR	IMR-4198	Subscribe	4082
Remarks:
22		IMR	IMR-4198	Subscribe	4133
Remarks:
22		IMR	IMR-4198	Subscribe	4444
Remarks:
22		IMR	IMR-3031	Subscribe	4388
Remarks:
25		Norma	N-203	Subscribe	3704
Remarks:
25		Norma	N-203	Subscribe	3922
Remarks:
25		Norma	N-203	Subscribe	4062
Remarks:
25		IMR	IMR-3031	Subscribe	3650
Remarks:
25		IMR	IMR-3031	Subscribe	3942
Remarks:
25		IMR	IMR-3031	Subscribe	4000
Remarks:
25		IMR	IMR-3031	Subscribe	4050
Remarks:
25		IMR	IMR-3031	Subscribe	4187
Remarks:
25		IMR	IMR-4320	Subscribe	3850
Remarks:
25		IMR	IMR-4320	Subscribe	4050
Remarks:
25		IMR	IMR-4320	Subscribe	4125
Remarks:
25		IMR	IMR-4350	Subscribe	3774
Remarks:
25		IMR	IMR-4350	Subscribe	3820
Remarks:
25		IMR	IMR-4350	Subscribe	4000
Remarks:
25		IMR	IMR-4350	Subscribe	4066
Remarks:
25		IMR	IMR-4350	Subscribe	4111
Remarks: compressed