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7.7x58mm Japanese Arisaka (P.O. Ackley Data)

Warning! Notes: This cartridge is the other Japanese service cartridge used during World War II. It is often referred to as the .31 Jap but actually it is neither a .30 or .31 calibre, but a .303, using bullets measuring .312-.314. Thousands of these rifles have been re-chambered to accept the regular .30-06 cartridge, but this is a dangerous conversion without setting the barrel back at least 3/8", because the Jap chamber is oversize at the butt for our standard cartridge thus increasing the danger of ruptured cases near the head. Reloaders should always use bullets measuring .311, rather than the standard .308 bullet. (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)
100		Hodgdon	H-380	Subscribe	3190
Remarks:
100		Hodgdon	H-380	Subscribe	3260
Remarks:
100		IMR	IMR-3031	Subscribe	3070
Remarks:
100		IMR	IMR-3031	Subscribe	3200
Remarks:
130		Norma	N-203	Subscribe	2950
Remarks:
150		IMR	IMR-4350	Subscribe	2450
Remarks:
150		IMR	IMR-4350	Subscribe	2750
Remarks:
150		IMR	IMR-4895	Subscribe	2640
Remarks:
150		IMR	IMR-4895	Subscribe	2700
Remarks:
150		IMR	IMR-3031	Subscribe	2485
Remarks:
150		IMR	IMR-3031	Subscribe	2630
Remarks:
150		IMR	IMR-3031	Subscribe	2730
Remarks:
150		Hodgdon	H-380	Subscribe	2460
Remarks:
150		Hodgdon	H-380	Subscribe	2600
Remarks:
180		IMR	IMR-4350	Subscribe	2380
Remarks:
180		IMR	IMR-4350	Subscribe	2450
Remarks:
180		IMR	IMR-4320	Subscribe	2250
Remarks:
180		IMR	IMR-4320	Subscribe	2430
Remarks:
180		IMR	IMR-4320	Subscribe	2500
Remarks:
180		Hodgdon	H-380	Subscribe	2160
Remarks:
180		Hodgdon	H-380	Subscribe	2330
Remarks:
180		IMR	IMR-4895	Subscribe	2360
Remarks:
180		IMR	IMR-4895	Subscribe	2420
Remarks:
180		Norma	N-203	Subscribe	2495
Remarks:
215		Norma	N-203	Subscribe	2265
Remarks: