8mm IHMSA Load Data

37 published 8mm IHMSA reloading recipes across 10 powders and 3 bullet manufacturers, with bullet weights from 125 to 220 grains and recorded velocities between 1,704 and 2,650 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
37
Powders
10
Bullet makers
3
Bullet weights
125–220 gr

Sample 8mm IHMSA loads

The first 5 of 37 recipes.

BulletPowderChargeVelocityCOALPrimer
Hornady spire-point 125grHodgdon H-32239.0 gr2,363 fps——
Hornady spire-point 125grHodgdon H-32243.0 gr2,576 fps——
Hornady spire-point 125grHodgdon H-32241.0 gr2,477 fps——
Hornady spire-point 125grIMR IMR-419834.0 gr2,481 fps——
Hornady spire-point 125grIMR IMR-419832.0 gr2,301 fps——

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