Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 100gr | Sierra VarmintKing bullet and 65 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and Ramshot Grand.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 90% | 55,753 psi | 87% | 3284 fps | 99.9% |
| Accurate 4350 | <<locked>> | 82% | 55,637 psi | 87% | 3337 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 54,853 psi | 86% | 3369 fps | 96.8% |
| ADI AR 2209 | <<locked>> | 88% | 56,927 psi | 89% | 3386 fps | 99% |
| ADI AR 2213 | <<locked>> | 90% | 55,390 psi | 87% | 3383 fps | 97.9% |
| ADI AR 2217 | <<locked>> | 98% | 54,288 psi | 85% | 3337 fps | 98.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 53,069 psi | 83% | 3353 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 84% | 56,536 psi | 89% | 3399 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 56,579 psi | 89% | 3369 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 90% | 55,825 psi | 87% | 3379 fps | 99% |
| Alliant Reloder-23 | <<locked>> | 92% | 57,363 psi | 90% | 3360 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 53,824 psi | 84% | 3356 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 54,346 psi | 85% | 3379 fps | 100% |
| Bofors RP15 | <<locked>> | 92% | 55,027 psi | 86% | 3360 fps | 98.7% |
| Bofors RP30 | <<locked>> | 96% | 54,041 psi | 85% | 3346 fps | 98.2% |
| Bofors RP5 | <<locked>> | 90% | 55,825 psi | 87% | 3379 fps | 99% |
| Bofors RP7 | <<locked>> | 82% | 56,985 psi | 89% | 3340 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 96% | 55,854 psi | 88% | 3366 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 82% | 57,072 psi | 89% | 3386 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 88% | 54,868 psi | 86% | 3314 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 57,609 psi | 90% | 3360 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 56,913 psi | 89% | 3314 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 56,782 psi | 89% | 3494 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,159 psi | 58% | 2320 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 55,506 psi | 87% | 3314 fps | 99.4% |
| IMR 4831 | <<locked>> | 84% | 56,144 psi | 88% | 3327 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 55,274 psi | 87% | 3301 fps | 97.5% |
| IMR 7828 SSC | <<locked>> | 92% | 57,551 psi | 90% | 3425 fps | 98.4% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 48,327 psi | 76% | 3241 fps | 96.8% |
| Lovex S065 | <<locked>> | 82% | 55,695 psi | 87% | 3304 fps | 99.9% |
| Lovex S070 | <<locked>> | 82% | 54,143 psi | 85% | 3294 fps | 99.5% |
| Lovex S071 | <<locked>> | 96% | 57,334 psi | 90% | 3310 fps | 100% |
| Norma 204 | <<locked>> | 84% | 57,174 psi | 90% | 3369 fps | 98.9% |
| Norma 217ᴾ | <<locked>> | 100% | 49,139 psi | 77% | 3271 fps | 98.9% |
| Norma MRP | <<locked>> | 88% | 56,043 psi | 88% | 3402 fps | 99.7% |
| Norma URP | <<locked>> | 84% | 57,682 psi | 90% | 3376 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 54,665 psi | 86% | 3373 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 84% | 57,000 psi | 89% | 3369 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 92% | 53,795 psi | 84% | 3297 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,913 psi | 59% | 2369 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 56,072 psi | 88% | 3346 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 54,781 psi | 86% | 3373 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 54,215 psi | 85% | 3409 fps | 99.9% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 53,983 psi | 85% | 3346 fps | 97% |
| Rottweil R 904 | <<locked>> | 88% | 57,711 psi | 90% | 3356 fps | 98.3% |
| Rottweil R 905 | <<locked>> | 88% | 56,072 psi | 88% | 3360 fps | 99% |
| Rottweil R 907 | <<locked>> | 82% | 56,985 psi | 89% | 3340 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 82% | 55,695 psi | 87% | 3304 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 82% | 54,143 psi | 85% | 3294 fps | 99.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 54,926 psi | 86% | 3248 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 55,680 psi | 87% | 3353 fps | 98.9% |
| Somchem S361 | <<locked>> | 86% | 55,883 psi | 88% | 3264 fps | 97.5% |
| Somchem S365 | <<locked>> | 84% | 54,998 psi | 86% | 3317 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 56,855 psi | 89% | 3330 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 82% | 55,434 psi | 87% | 3307 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 56,782 psi | 89% | 3304 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 82% | 54,969 psi | 86% | 3307 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 55,361 psi | 87% | 3337 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 55,535 psi | 87% | 3389 fps | 97.5% |
| Vihtavuori N565 | <<locked>> | 94% | 56,594 psi | 89% | 3369 fps | 98% |
| Vihtavuori N568 | <<locked>> | 96% | 54,360 psi | 85% | 3356 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 55,637 psi | 87% | 3245 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 57,261 psi | 90% | 3389 fps | 99.7% |
| Winchester StaBALL HD | <<locked>> | 92% | 57,435 psi | 90% | 3442 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 57,058 psi | 89% | 3320 fps | 99.1% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 39,073 psi | 61% | 2966 fps | 97.2% |
| Accurate 4350 | <<locked>> | 80% | 51,793 psi | 81% | 3271 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 50,952 psi | 80% | 3297 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 80% | 42,859 psi | 67% | 3110 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 86% | 47,979 psi | 75% | 3238 fps | 96% |
| ADI AR 2217 | <<locked>> | 92% | 43,671 psi | 68% | 3120 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 90% | 37,057 psi | 58% | 2999 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,211 psi | 77% | 3278 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,018 psi | 67% | 3107 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 82% | 41,974 psi | 66% | 3100 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,463 psi | 59% | 2995 fps | 99.4% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,430 psi | 51% | 2877 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,656 psi | 67% | 3156 fps | 99.2% |
| Bofors RP15 | <<locked>> | 84% | 41,742 psi | 65% | 3094 fps | 95.2% |
| Bofors RP30 | <<locked>> | 90% | 43,337 psi | 68% | 3133 fps | 95.2% |
| Bofors RP5 | <<locked>> | 82% | 41,974 psi | 66% | 3100 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 53,287 psi | 84% | 3278 fps | 99% |
| Hodgdon H1000 | <<locked>> | 88% | 41,597 psi | 65% | 3077 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 53,345 psi | 84% | 3320 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 84% | 47,529 psi | 74% | 3179 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 86% | 50,096 psi | 79% | 3225 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,383 psi | 73% | 3143 fps | 100% |
| Hodgdon Retumbo | 86.9 gr | 86% | 39,363 psi | 62% | 3114 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,746 psi | 43% | 2096 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,588 psi | 76% | 3189 fps | 98.3% |
| IMR 4831 | <<locked>> | 80% | 48,936 psi | 77% | 3205 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 48,399 psi | 76% | 3173 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 86% | 46,224 psi | 72% | 3209 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 98% | 44,831 psi | 70% | 3169 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 52,098 psi | 82% | 3245 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 50,633 psi | 79% | 3232 fps | 99.1% |
| Lovex S071 | <<locked>> | 82% | 35,694 psi | 56% | 2884 fps | 95.9% |
| Norma 204 | <<locked>> | 80% | 49,472 psi | 78% | 3228 fps | 97.4% |
| Norma 217 | <<locked>> | 94% | 39,117 psi | 61% | 3058 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 41,423 psi | 65% | 3110 fps | 96.7% |
| Norma URP | <<locked>> | 80% | 50,241 psi | 79% | 3255 fps | 99.9% |
| Ramshot Grand | 89.4 gr | 86% | 46,586 psi | 73% | 3219 fps | 96.1% |
| Ramshot Hunter | <<locked>> | 80% | 49,472 psi | 78% | 3238 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 84% | 39,001 psi | 61% | 3002 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,340 psi | 44% | 2146 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 52,112 psi | 82% | 3284 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,604 psi | 79% | 3304 fps | 99.9% |
| ReloadSwiss RS 76 | 90.8 gr | 84% | 36,434 psi | 57% | 3005 fps | 95.3% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 49,922 psi | 78% | 3268 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 82% | 47,050 psi | 74% | 3159 fps | 95.9% |
| Rottweil R 905 | <<locked>> | 80% | 42,409 psi | 66% | 3091 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 53,287 psi | 84% | 3278 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,098 psi | 82% | 3245 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 50,633 psi | 79% | 3232 fps | 99.1% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,358 psi | 80% | 3186 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,090 psi | 66% | 3087 fps | 95.6% |
| Somchem S361 | <<locked>> | 82% | 48,704 psi | 76% | 3140 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 47,616 psi | 75% | 3199 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 43,120 psi | 68% | 3071 fps | 96.9% |
| Vihtavuori N160 | <<locked>> | 80% | 51,750 psi | 81% | 3245 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 40,103 psi | 63% | 2986 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 51,256 psi | 80% | 3245 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 41,887 psi | 66% | 3087 fps | 99.4% |
| Vihtavuori N560 | <<locked>> | 84% | 47,921 psi | 75% | 3245 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 88% | 45,542 psi | 71% | 3159 fps | 95.1% |
| Vihtavuori N568 | <<locked>> | 94% | 50,372 psi | 79% | 3281 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,663 psi | 81% | 3186 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,519 psi | 84% | 3323 fps | 99.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 34,780 psi | 55% | 3009 fps | 99.7% |
| Winchester Supreme 780 | <<locked>> | 82% | 42,641 psi | 67% | 3048 fps | 95.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 71 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 100gr | Sierra VarmintKing. Hodgdon Retumbo delivers the highest muzzle velocity at 3,494 fps; across all powders the maximum-charge window runs from 2,320 fps to 3,494 fps. ADI AR 2218 gives the best case fill at 100 %, and 71 of the 71 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 100.0 gr projectile in 0.284" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. ADI AR 2218, ADI AR 2225, Alliant Reloder-33 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Hodgdon Retumbo, ReloadSwiss RS 76, Ramshot Grand rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 100gr | Sierra VarmintKing they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2218, Alliant Reloder-50, Vihtavuori N170 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.