7.7 x 58mm Japanese Load Data

18 published 7.7 x 58mm Japanese reloading recipes across 9 powders and 2 bullet manufacturers, with bullet weights from 150 to 180 grains and recorded velocities between 2,011 and 2,768 fps. Every load lists charge weight, velocity, COAL, primer and case where the source published it.

Always begin at the minimum charge weight and work up gradually. Never exceed maximum loads. Verify all data against a current published reloading manual before use. LoadDevelopment.com is not responsible for errors or omissions in this data.
Recipes
18
Powders
9
Bullet makers
2
Bullet weights
150–180 gr

Sample 7.7 x 58mm Japanese loads

The first 5 of 18 recipes.

BulletPowderChargeVelocityCOALPrimer
HDY SP 150grAccurate A270048.5–51.0 gr2602.0–2768 fps3.175Winchester LR, Large Rifle
HDY SP 150grAccurate A435046.8–52.0 gr2346.0–2666 fps3.175Winchester LR, Large Rifle
SIE SP 150grHodgdon BL-C(2)41.0–44.0 gr2289.0–2487 fps3.050Remington 9 1/2, Large Rifle
SIE SP 150grHodgdon H33541.0–44.0 gr2309.0–2499 fps3.050Remington 9 1/2, Large Rifle
SIE SP 150grHodgdon H38044.0–47.0 gr2169.0–2461 fps3.050Remington 9 1/2, Large Rifle

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