300 Remington Ultra Mag Load Data

94 published 300 Remington Ultra Mag reloading recipes across 15 powders and 6 bullet manufacturers, with bullet weights from 110 to 220 grains and recorded velocities between 2,583 and 3,965 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
94
Powders
15
Bullet makers
6
Bullet weights
110–220 gr

Sample 300 Remington Ultra Mag loads

The first 5 of 94 recipes.

BulletPowderChargeVelocityCOALPrimer
BAR TTSX-FB 110grRamshot Magnum102.7–114.1 gr3585.0–3965 fps3.585Federal 215, Large Rifle Magnum
BAR TSX-BT 140grHodgdon H100095.0–101.0 gr3326.0–3470 fps3.555Remington 9 1/2M, Large Rifle Magnum
BAR TSX-BT 140grHodgdon H483187.0–93.0 gr3258.0–3447 fps3.555Remington 9 1/2M, Large Rifle Magnum
BAR TSX-BT 140grHodgdon Retumbo97.0–103.5 gr3282.0–3493 fps3.555Remington 9 1/2M, Large Rifle Magnum
SIE SBT-SGK 150grHodgdon H100098.0–102.0 gr3258.0–3457 fps3.530Remington 9 1/2M, Large Rifle Magnum

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