Load Specifications
Load data in caliber .300 Rem. Ultra Mag. with .308 | 120gr | SAKO Powerhead Blade bullet and 92 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Alliant Reloder-16 and Hodgdon H414.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 56,130 psi | 86% | 3196 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 57,566 psi | 89% | 3245 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 57,246 psi | 88% | 3278 fps | 99.4% |
| Accurate 4064 | <<locked>> | 84% | 56,666 psi | 87% | 3248 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 58,639 psi | 90% | 3346 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 58,740 psi | 90% | 3333 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 56,652 psi | 87% | 3281 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 55,956 psi | 86% | 3323 fps | 97.3% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 57,754 psi | 89% | 3369 fps | 96.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,333 psi | 87% | 3406 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 56,188 psi | 86% | 3320 fps | 97.4% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 56,188 psi | 86% | 3320 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 57,580 psi | 89% | 3304 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 57,841 psi | 89% | 3330 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 55,143 psi | 85% | 3353 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 56,898 psi | 88% | 3379 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,434 psi | 85% | 3307 fps | 97.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,971 psi | 88% | 3366 fps | 97.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,606 psi | 83% | 3297 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,557 psi | 72% | 3202 fps | 98.7% |
| Alliant Reloder-26 | <<locked>> | 98% | 58,798 psi | 90% | 3445 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,924 psi | 80% | 3278 fps | 96.6% |
| Bofors RP3 | <<locked>> | 84% | 55,042 psi | 85% | 3261 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,971 psi | 88% | 3366 fps | 97.8% |
| Bofors RP7 | <<locked>> | 90% | 58,204 psi | 90% | 3297 fps | 98.4% |
| Hodgdon H380 | <<locked>> | 84% | 55,506 psi | 85% | 3278 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 90% | 56,768 psi | 87% | 3337 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 88% | 56,086 psi | 86% | 3294 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,622 psi | 86% | 3264 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,652 psi | 87% | 3317 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 57,914 psi | 89% | 3369 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,172 psi | 56% | 2188 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,927 psi | 88% | 3291 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,854 psi | 86% | 3261 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 58,726 psi | 90% | 3294 fps | 98.9% |
| IMR 4350 | <<locked>> | 92% | 55,970 psi | 86% | 3264 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,130 psi | 86% | 3268 fps | 98.5% |
| IMR 4831 | <<locked>> | 92% | 55,187 psi | 85% | 3278 fps | 99.9% |
| IMR 4895 | <<locked>> | 82% | 55,448 psi | 85% | 3301 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 57,217 psi | 88% | 3251 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 56,231 psi | 87% | 3258 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,376 psi | 87% | 3261 fps | 99.4% |
| Lovex S070 | <<locked>> | 92% | 58,015 psi | 89% | 3304 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,253 psi | 73% | 3110 fps | 97.9% |
| Norma 201 | <<locked>> | 82% | 57,363 psi | 88% | 3274 fps | 100% |
| Norma 202 | <<locked>> | 82% | 58,131 psi | 89% | 3271 fps | 100% |
| Norma 203B | <<locked>> | 84% | 57,145 psi | 88% | 3314 fps | 100% |
| Norma 204 | <<locked>> | 92% | 57,145 psi | 88% | 3320 fps | 97.4% |
| Norma MRP | <<locked>> | 98% | 56,898 psi | 88% | 3399 fps | 98.9% |
| Norma URP | <<locked>> | 92% | 56,956 psi | 88% | 3330 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 58,508 psi | 90% | 3330 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,782 psi | 86% | 3350 fps | 96.5% |
| Ramshot Hunter | <<locked>> | 92% | 56,144 psi | 86% | 3320 fps | 99.3% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,285 psi | 77% | 3212 fps | 97.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,796 psi | 57% | 2238 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,434 psi | 85% | 3251 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 56,159 psi | 86% | 3373 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,766 psi | 84% | 3301 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 57,421 psi | 88% | 3396 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,369 psi | 71% | 3222 fps | 97.2% |
| Rottweil R 902 | <<locked>> | 84% | 58,102 psi | 89% | 3274 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,245 psi | 85% | 3258 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 57,421 psi | 88% | 3291 fps | 96.4% |
| Rottweil R 905 | <<locked>> | 98% | 58,421 psi | 90% | 3356 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 58,204 psi | 90% | 3297 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,376 psi | 87% | 3261 fps | 99.4% |
| Shooters World Precision | <<locked>> | 84% | 56,231 psi | 87% | 3258 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 58,015 psi | 89% | 3304 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 57,058 psi | 88% | 3317 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,522 psi | 89% | 3294 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 57,972 psi | 89% | 3205 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,709 psi | 86% | 3143 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,289 psi | 87% | 3209 fps | 98.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 57,928 psi | 89% | 3350 fps | 97.9% |
| Somchem S335 | <<locked>> | 82% | 57,783 psi | 89% | 3192 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 58,697 psi | 90% | 3310 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 56,782 psi | 87% | 3333 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,347 psi | 85% | 3261 fps | 98.1% |
| Vihtavuori N133 | <<locked>> | 82% | 58,479 psi | 90% | 3186 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 58,465 psi | 90% | 3232 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,216 psi | 85% | 3189 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,623 psi | 87% | 3225 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,347 psi | 85% | 3264 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,853 psi | 84% | 3232 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 84% | 57,551 psi | 89% | 3232 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 58,392 psi | 90% | 3323 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 98% | 56,144 psi | 86% | 3330 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,608 psi | 86% | 3222 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 57,000 psi | 88% | 3343 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,690 psi | 76% | 3360 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 57,899 psi | 89% | 3301 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,941 psi | 86% | 3255 fps | 97.3% |
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 2495 | <<locked>> | 80% | 52,475 psi | 81% | 3140 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,256 psi | 77% | 3120 fps | 96.7% |
| Accurate 3100 | <<locked>> | 90% | 40,118 psi | 62% | 2963 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 49,647 psi | 76% | 3140 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,000 psi | 58% | 2963 fps | 96.8% |
| ADI AR 2206H | <<locked>> | 80% | 55,114 psi | 85% | 3278 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 46,775 psi | 72% | 3107 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 92% | 48,834 psi | 75% | 3196 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 98% | 53,925 psi | 83% | 3304 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,359 psi | 81% | 3340 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 48,950 psi | 75% | 3189 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 48,950 psi | 75% | 3189 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,326 psi | 73% | 3133 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,589 psi | 78% | 3209 fps | 99.7% |
| Alliant Reloder-16 | 71.4 gr | 80% | 36,811 psi | 57% | 2972 fps | 96.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,293 psi | 65% | 3120 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 92% | 48,341 psi | 74% | 3179 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 46,137 psi | 71% | 3169 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 84% | 30,995 psi | 48% | 2808 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 94% | 38,130 psi | 59% | 3005 fps | 96% |
| Alliant Reloder-26 | 84.7 gr | 86% | 36,709 psi | 56% | 3012 fps | 96.2% |
| Bofors RP15 | <<locked>> | 98% | 48,486 psi | 75% | 3212 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 47,892 psi | 74% | 3143 fps | 99.9% |
| Bofors RP5 | <<locked>> | 94% | 46,137 psi | 71% | 3169 fps | 95.1% |
| Bofors RP7 | <<locked>> | 82% | 44,831 psi | 69% | 3054 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 48,298 psi | 74% | 3150 fps | 98.8% |
| Hodgdon H414 | 77.1 gr | 82% | 43,004 psi | 66% | 3077 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 82% | 45,919 psi | 71% | 3107 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,316 psi | 53% | 2854 fps | 97.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,852 psi | 81% | 3261 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 42,554 psi | 65% | 3081 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,919 psi | 41% | 1972 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,330 psi | 82% | 3232 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,182 psi | 76% | 3150 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,488 psi | 79% | 3173 fps | 97.7% |
| IMR 4350 | <<locked>> | 84% | 43,033 psi | 66% | 3022 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,294 psi | 67% | 3025 fps | 95.5% |
| IMR 4831 | <<locked>> | 80% | 36,463 psi | 56% | 2910 fps | 96.4% |
| IMR 4895 | <<locked>> | 80% | 51,909 psi | 80% | 3245 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 53,693 psi | 83% | 3196 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,385 psi | 76% | 3146 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,843 psi | 63% | 2969 fps | 96.3% |
| Lovex S070 | <<locked>> | 82% | 41,785 psi | 64% | 3002 fps | 95.4% |
| Lovex S071 | <<locked>> | 94% | 38,566 psi | 59% | 2930 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 53,795 psi | 83% | 3219 fps | 100% |
| Norma 202 | <<locked>> | 80% | 54,491 psi | 84% | 3219 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,951 psi | 77% | 3196 fps | 99.8% |
| Norma 204 | <<locked>> | 88% | 49,559 psi | 76% | 3186 fps | 95.6% |
| Norma MRP | <<locked>> | 90% | 42,351 psi | 65% | 3117 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 37,710 psi | 58% | 2956 fps | 96.6% |
| Ramshot Big Game | <<locked>> | 80% | 50,778 psi | 78% | 3212 fps | 99.9% |
| Ramshot Grand | <<locked>> | 98% | 51,706 psi | 80% | 3274 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 82% | 39,508 psi | 61% | 2999 fps | 95.4% |
| Ramshot Magnum | <<locked>> | 96% | 43,149 psi | 66% | 3064 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,398 psi | 42% | 2018 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,356 psi | 74% | 3130 fps | 97.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,904 psi | 69% | 3186 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,971 psi | 58% | 2972 fps | 96.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,985 psi | 57% | 2979 fps | 95.7% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 42,931 psi | 66% | 3140 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 51,213 psi | 79% | 3166 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,933 psi | 69% | 3081 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 53,722 psi | 83% | 3228 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 92% | 47,500 psi | 73% | 3159 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 82% | 44,831 psi | 69% | 3054 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,843 psi | 63% | 2969 fps | 96.3% |
| Shooters World Precision | <<locked>> | 80% | 49,385 psi | 76% | 3146 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 41,785 psi | 64% | 3002 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,340 psi | 71% | 3133 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,809 psi | 83% | 3238 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 54,259 psi | 84% | 3153 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,963 psi | 71% | 2995 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 42,931 psi | 66% | 2963 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 47,094 psi | 72% | 3156 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 54,244 psi | 83% | 3143 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 45,165 psi | 70% | 3084 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 34,185 psi | 53% | 2907 fps | 98.7% |
| Somchem S385 | <<locked>> | 90% | 45,136 psi | 69% | 3077 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 54,810 psi | 84% | 3136 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 51,271 psi | 79% | 3133 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,721 psi | 80% | 3140 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,236 psi | 67% | 3005 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 39,160 psi | 60% | 2959 fps | 97% |
| Vihtavuori N165 | <<locked>> | 94% | 44,541 psi | 69% | 3045 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 50,299 psi | 77% | 3127 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,798 psi | 60% | 2956 fps | 96.7% |
| Vihtavuori N555 | <<locked>> | 82% | 32,082 psi | 49% | 2835 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,740 psi | 60% | 2923 fps | 99.1% |
| Winchester 760 | <<locked>> | 82% | 43,149 psi | 66% | 3081 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 86% | 29,675 psi | 46% | 2841 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 54,070 psi | 83% | 3241 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 48,225 psi | 74% | 3123 fps | 95.5% |
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 92 powders for .300 Rem. Ultra Mag. loaded with the .308 | 120gr | SAKO Powerhead Blade. Alliant Reloder-26 delivers the highest muzzle velocity at 3,445 fps; across all powders the maximum-charge window runs from 2,188 fps to 3,445 fps. Accurate 3100 gives the best case fill at 100 %, and 92 of the 92 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 120.0 gr projectile in 0.308" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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. Alliant Reloder-26, Alliant Reloder-16, Hodgdon H414 rank at the top here: for .300 Rem. Ultra Mag. with the .308 | 120gr | SAKO Powerhead Blade they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.