Load Specifications
Load data in caliber .300 Rem. Ultra Mag. with .308 | 139gr | RWS Evolution Green bullet and 84 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and ADI AR 2213.
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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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 2700 | <<locked>> | 82% | 58,117 psi | 89% | 3100 fps | 99.2% |
| Accurate 3100 | <<locked>> | 96% | 55,143 psi | 85% | 3094 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 57,551 psi | 89% | 3087 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 56,115 psi | 86% | 3146 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 58,262 psi | 90% | 3245 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 84% | 57,493 psi | 88% | 3127 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 57,595 psi | 89% | 3196 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 96% | 55,434 psi | 85% | 3189 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,133 psi | 63% | 2943 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 58,668 psi | 90% | 3146 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 58,668 psi | 90% | 3173 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 57,174 psi | 88% | 3212 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,592 psi | 84% | 3169 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 57,029 psi | 88% | 3182 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,129 psi | 85% | 3182 fps | 98.6% |
| Alliant Reloder-23 | <<locked>> | 98% | 56,072 psi | 86% | 3163 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,069 psi | 80% | 3156 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 57,232 psi | 88% | 3255 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 58,088 psi | 89% | 3225 fps | 98.9% |
| Bofors RP3 | <<locked>> | 82% | 56,086 psi | 86% | 3110 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,964 psi | 74% | 3071 fps | 96.5% |
| Bofors RP5 | <<locked>> | 96% | 55,129 psi | 85% | 3182 fps | 98.6% |
| Bofors RP7 | <<locked>> | 86% | 55,303 psi | 85% | 3097 fps | 99% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,314 psi | 79% | 3097 fps | 97.6% |
| Hodgdon H380 | <<locked>> | 82% | 56,275 psi | 87% | 3127 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 58,450 psi | 90% | 3205 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 86% | 57,232 psi | 88% | 3159 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 94% | 55,390 psi | 85% | 3127 fps | 96.8% |
| Hodgdon H4831 SC | <<locked>> | 96% | 58,175 psi | 90% | 3173 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 57,392 psi | 88% | 3123 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,937 psi | 78% | 3205 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 86% | 55,463 psi | 85% | 3173 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,550 psi | 56% | 2064 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,768 psi | 87% | 3107 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 57,058 psi | 88% | 3130 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,942 psi | 88% | 3123 fps | 99.5% |
| IMR 4831 | <<locked>> | 90% | 56,608 psi | 87% | 3133 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,478 psi | 87% | 3117 fps | 97.2% |
| IMR 7828 SSC | <<locked>> | 98% | 57,000 psi | 88% | 3225 fps | 97.9% |
| Lovex S062 | <<locked>> | 82% | 57,087 psi | 88% | 3100 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 57,276 psi | 88% | 3120 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 55,376 psi | 85% | 3107 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,243 psi | 80% | 3048 fps | 99.6% |
| Norma 203B | <<locked>> | 82% | 57,972 psi | 89% | 3153 fps | 100% |
| Norma 204 | <<locked>> | 90% | 58,450 psi | 90% | 3186 fps | 98.8% |
| Norma MRP | <<locked>> | 94% | 55,071 psi | 85% | 3209 fps | 99.5% |
| Norma URP | <<locked>> | 90% | 58,610 psi | 90% | 3189 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 58,102 psi | 89% | 3245 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 90% | 57,667 psi | 89% | 3186 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 56,623 psi | 87% | 3169 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,217 psi | 57% | 2113 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,115 psi | 86% | 3107 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 58,160 psi | 90% | 3219 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 56,492 psi | 87% | 3166 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 55,158 psi | 85% | 3196 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 52,127 psi | 80% | 3205 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 82% | 58,784 psi | 90% | 3110 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 56,144 psi | 86% | 3104 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,027 psi | 85% | 3104 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 94% | 56,289 psi | 87% | 3169 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 86% | 55,303 psi | 85% | 3097 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 88% | 57,276 psi | 88% | 3120 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 57,087 psi | 88% | 3100 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,376 psi | 85% | 3107 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 58,189 psi | 90% | 3163 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,347 psi | 87% | 2986 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,956 psi | 88% | 3068 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 55,840 psi | 86% | 3163 fps | 98.7% |
| Somchem S355 | <<locked>> | 84% | 55,985 psi | 86% | 3104 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 57,130 psi | 88% | 3091 fps | 97.2% |
| Somchem S365 | <<locked>> | 90% | 54,897 psi | 84% | 3133 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 57,072 psi | 88% | 3140 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 86% | 57,595 psi | 89% | 3071 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 56,652 psi | 87% | 3123 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 56,681 psi | 87% | 3110 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 82% | 58,131 psi | 89% | 3071 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 55,970 psi | 86% | 3127 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 58,204 psi | 90% | 3192 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,984 psi | 85% | 3196 fps | 97.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,810 psi | 84% | 3163 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 56,797 psi | 87% | 3077 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 58,450 psi | 90% | 3205 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 58,233 psi | 90% | 3297 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 57,450 psi | 88% | 3133 fps | 98.8% |
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 2700 | <<locked>> | 80% | 54,346 psi | 84% | 3045 fps | 98.8% |
| Accurate 3100 | <<locked>> | 84% | 35,723 psi | 55% | 2723 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 53,708 psi | 83% | 3031 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 42,047 psi | 65% | 2900 fps | 99% |
| Accurate MAGPRO | <<locked>> | 92% | 50,053 psi | 77% | 3100 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 50,575 psi | 78% | 3018 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 43,540 psi | 67% | 2943 fps | 95.6% |
| ADI AR 2213 | 86.6 gr | 92% | 48,167 psi | 74% | 3058 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 98% | 38,363 psi | 59% | 2874 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,561 psi | 79% | 3041 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 55,027 psi | 85% | 3117 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,408 psi | 62% | 2913 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,007 psi | 72% | 3045 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 43,526 psi | 67% | 2936 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 88% | 41,495 psi | 64% | 2923 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,660 psi | 46% | 2635 fps | 97.1% |
| Alliant Reloder-25 | <<locked>> | 88% | 34,316 psi | 53% | 2776 fps | 96.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 32,619 psi | 50% | 2759 fps | 96.1% |
| Bofors RP15 | <<locked>> | 92% | 43,961 psi | 68% | 2976 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 52,257 psi | 80% | 3051 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 44,512 psi | 69% | 3002 fps | 95.5% |
| Bofors RP5 | <<locked>> | 88% | 41,495 psi | 64% | 2923 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 45,339 psi | 70% | 2917 fps | 97.2% |
| Hodgdon H1000 | <<locked>> | 96% | 44,295 psi | 68% | 2959 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 52,504 psi | 81% | 3064 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 44,077 psi | 68% | 2953 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 80% | 46,789 psi | 72% | 2979 fps | 96.9% |
| Hodgdon H4831 | <<locked>> | 92% | 51,561 psi | 79% | 3061 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 92% | 50,575 psi | 78% | 3045 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,898 psi | 58% | 2792 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 94% | 41,249 psi | 63% | 2995 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 43,801 psi | 67% | 2966 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,195 psi | 42% | 1857 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,171 psi | 82% | 3054 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,002 psi | 63% | 2838 fps | 96% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,920 psi | 72% | 2953 fps | 98% |
| IMR 4831 | <<locked>> | 80% | 40,161 psi | 62% | 2848 fps | 98.8% |
| IMR 4955 Enduron | <<locked>> | 90% | 49,516 psi | 76% | 2999 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 92% | 45,977 psi | 71% | 3022 fps | 95.1% |
| Lovex S062 | <<locked>> | 80% | 53,345 psi | 82% | 3045 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,135 psi | 68% | 2894 fps | 98.5% |
| Lovex S070 | <<locked>> | 80% | 42,569 psi | 66% | 2874 fps | 97.2% |
| Lovex S071 | <<locked>> | 88% | 34,751 psi | 53% | 2700 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 54,389 psi | 84% | 3100 fps | 100% |
| Norma 204 | <<locked>> | 82% | 43,903 psi | 68% | 2930 fps | 95.6% |
| Norma MRP | 81.6 gr | 84% | 37,797 psi | 58% | 2867 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 41,582 psi | 64% | 2894 fps | 98.9% |
| Ramshot Grand | <<locked>> | 92% | 46,064 psi | 71% | 3031 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 40,567 psi | 62% | 2877 fps | 97.3% |
| Ramshot Magnum | <<locked>> | 92% | 41,263 psi | 64% | 2897 fps | 96.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,717 psi | 43% | 1900 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,489 psi | 81% | 3048 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,966 psi | 77% | 3104 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,134 psi | 65% | 2913 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,683 psi | 63% | 2927 fps | 98.5% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 38,319 psi | 59% | 2904 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 55,100 psi | 85% | 3061 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 49,095 psi | 76% | 2995 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 48,240 psi | 74% | 2986 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 86% | 42,482 psi | 65% | 2913 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 45,339 psi | 70% | 2917 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,135 psi | 68% | 2894 fps | 98.5% |
| Shooters World Precision | <<locked>> | 80% | 53,345 psi | 82% | 3045 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,569 psi | 66% | 2874 fps | 97.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,749 psi | 78% | 3051 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,588 psi | 76% | 2890 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,294 psi | 67% | 2835 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 42,119 psi | 65% | 2907 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 48,994 psi | 75% | 2992 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 49,792 psi | 77% | 2969 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 38,276 psi | 59% | 2844 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 40,205 psi | 62% | 2831 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 47,079 psi | 72% | 2917 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,033 psi | 66% | 2894 fps | 99.1% |
| Vihtavuori N165 | <<locked>> | 88% | 39,987 psi | 62% | 2812 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 54,389 psi | 84% | 3018 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,525 psi | 65% | 2890 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 80% | 33,199 psi | 51% | 2717 fps | 97.2% |
| Vihtavuori N560 | 87.4 gr | 90% | 47,442 psi | 73% | 3061 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 96% | 47,427 psi | 73% | 3031 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,395 psi | 65% | 2851 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,208 psi | 68% | 2956 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,339 psi | 41% | 2602 fps | 96.2% |
| Winchester Supreme 780 | <<locked>> | 88% | 42,917 psi | 66% | 2881 fps | 95.6% |
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 89 powders for .300 Rem. Ultra Mag. loaded with the .308 | 139gr | RWS Evolution Green. Winchester StaBALL HD delivers the highest muzzle velocity at 3,297 fps; across all powders the maximum-charge window runs from 2,064 fps to 3,297 fps. ADI AR 2217 gives the best case fill at 100 %, and 89 of the 89 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. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Norma MRP, Vihtavuori N560, ADI AR 2213 rank at the top here: for .300 Rem. Ultra Mag. with the .308 | 139gr | RWS Evolution Green they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Norma 217, ReloadSwiss RS 80, Vihtavuori N568 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.