Load Specifications
Load data in caliber .300 Norma Mag. with .308 | 150gr | Peregrine Bushmaster (VRG-3) bullet and 88 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 Alliant Reloder-26.
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 2495 | <<locked>> | 82% | 57,130 psi | 90% | 3077 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 55,071 psi | 86% | 3100 fps | 98.5% |
| Accurate 3100 | <<locked>> | 98% | 53,940 psi | 85% | 3143 fps | 99.5% |
| Accurate 4064 | <<locked>> | 82% | 54,114 psi | 85% | 3084 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,709 psi | 87% | 3199 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 55,492 psi | 87% | 3297 fps | 97.2% |
| Accurate MAGPRO | <<locked>> | 98% | 56,724 psi | 89% | 3294 fps | 96% |
| ADI AR 2208 | <<locked>> | 84% | 54,505 psi | 85% | 3120 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 57,101 psi | 89% | 3251 fps | 98.2% |
| ADI AR 2213 | <<locked>> | 98% | 54,824 psi | 86% | 3241 fps | 96.7% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 57,116 psi | 90% | 3245 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,434 psi | 87% | 3146 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,463 psi | 87% | 3169 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,826 psi | 89% | 3268 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,288 psi | 85% | 3225 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 56,333 psi | 88% | 3235 fps | 98.2% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,128 psi | 85% | 3235 fps | 97.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,810 psi | 86% | 3222 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,297 psi | 74% | 3140 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 96% | 55,129 psi | 86% | 3310 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,881 psi | 83% | 3209 fps | 97.6% |
| Bofors RP3 | <<locked>> | 84% | 56,275 psi | 88% | 3163 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 54,128 psi | 85% | 3235 fps | 97.9% |
| Bofors RP7 | <<locked>> | 88% | 55,622 psi | 87% | 3146 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 84% | 56,594 psi | 89% | 3179 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,317 psi | 85% | 3196 fps | 99% |
| Hodgdon H4350 | <<locked>> | 88% | 57,479 psi | 90% | 3219 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 96% | 54,781 psi | 86% | 3179 fps | 96% |
| Hodgdon H4831 SC | <<locked>> | 98% | 57,624 psi | 90% | 3228 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 56,985 psi | 89% | 3179 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,340 psi | 73% | 3176 fps | 96.8% |
| Hodgdon Superformance | <<locked>> | 88% | 54,708 psi | 86% | 3232 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,390 psi | 57% | 2021 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,392 psi | 90% | 3159 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,289 psi | 88% | 3140 fps | 99.2% |
| IMR 4350 | <<locked>> | 92% | 56,913 psi | 89% | 3186 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 88% | 57,319 psi | 90% | 3179 fps | 99.2% |
| IMR 4831 | <<locked>> | 92% | 56,347 psi | 88% | 3196 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 56,942 psi | 89% | 3199 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 56,275 psi | 88% | 3173 fps | 96.5% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 56,043 psi | 88% | 3278 fps | 97.1% |
| Lovex S062 | <<locked>> | 84% | 57,638 psi | 90% | 3153 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,493 psi | 90% | 3173 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 55,303 psi | 87% | 3159 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,906 psi | 75% | 3035 fps | 98.7% |
| Norma 203B | <<locked>> | 82% | 54,781 psi | 86% | 3153 fps | 100% |
| Norma 204 | <<locked>> | 90% | 54,215 psi | 85% | 3176 fps | 97.6% |
| Norma MRP | <<locked>> | 96% | 53,621 psi | 84% | 3258 fps | 98.9% |
| Norma URP | <<locked>> | 90% | 54,375 psi | 85% | 3182 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,956 psi | 88% | 3182 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,826 psi | 89% | 3301 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 92% | 57,261 psi | 90% | 3245 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,734 psi | 80% | 3153 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,086 psi | 58% | 2067 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,565 psi | 89% | 3166 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 53,563 psi | 84% | 3219 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,825 psi | 87% | 3222 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,375 psi | 85% | 3251 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,528 psi | 73% | 3169 fps | 98.1% |
| Rottweil R 902 | <<locked>> | 82% | 55,825 psi | 87% | 3110 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,333 psi | 88% | 3159 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,911 psi | 86% | 3156 fps | 96.8% |
| Rottweil R 905 | <<locked>> | 96% | 55,666 psi | 87% | 3219 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 88% | 55,622 psi | 87% | 3146 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,493 psi | 90% | 3173 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 57,638 psi | 90% | 3153 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,303 psi | 87% | 3159 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,505 psi | 85% | 3163 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 57,087 psi | 89% | 3038 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 57,188 psi | 90% | 3123 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 55,201 psi | 87% | 3215 fps | 98.1% |
| Somchem S355 | <<locked>> | 86% | 56,231 psi | 88% | 3153 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,739 psi | 89% | 3146 fps | 96.4% |
| Somchem S365 | <<locked>> | 92% | 54,085 psi | 85% | 3186 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 56,304 psi | 88% | 3192 fps | 98.8% |
| Vihtavuori N135 | <<locked>> | 82% | 56,478 psi | 89% | 3068 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,623 psi | 89% | 3081 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 54,041 psi | 85% | 3071 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,507 psi | 89% | 3179 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,782 psi | 87% | 3169 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 82% | 54,911 psi | 86% | 3074 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,753 psi | 87% | 3182 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 57,014 psi | 89% | 3248 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 53,737 psi | 84% | 3245 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 56,478 psi | 89% | 3140 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,549 psi | 85% | 3199 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,952 psi | 80% | 3291 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,637 psi | 89% | 3189 fps | 98.1% |
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 2495 | <<locked>> | 80% | 53,534 psi | 84% | 3025 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,387 psi | 81% | 3035 fps | 97.9% |
| Accurate 3100 | <<locked>> | 86% | 35,404 psi | 55% | 2762 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 50,763 psi | 80% | 3028 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,986 psi | 61% | 2874 fps | 98.1% |
| Accurate High Country | <<locked>> | 92% | 48,022 psi | 75% | 3150 fps | 95.3% |
| Accurate MAGPRO | <<locked>> | 96% | 52,663 psi | 83% | 3225 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 47,935 psi | 75% | 3005 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 88% | 43,482 psi | 68% | 2986 fps | 95% |
| ADI AR 2213 | <<locked>> | 96% | 51,155 psi | 80% | 3173 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 43,671 psi | 68% | 2986 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,704 psi | 76% | 3031 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,909 psi | 81% | 3107 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,029 psi | 60% | 2890 fps | 98.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,555 psi | 68% | 3028 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 88% | 43,149 psi | 68% | 2976 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 92% | 43,874 psi | 69% | 3031 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,731 psi | 43% | 2602 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 90% | 33,910 psi | 53% | 2805 fps | 95.1% |
| Alliant Reloder-26 | 78.3 gr | 82% | 32,198 psi | 50% | 2792 fps | 95.1% |
| Bofors RP15 | <<locked>> | 94% | 43,250 psi | 68% | 3015 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 49,066 psi | 77% | 3041 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 43,874 psi | 69% | 3031 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 42,902 psi | 67% | 2900 fps | 96.1% |
| Hodgdon H380 | <<locked>> | 80% | 49,472 psi | 78% | 3058 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 41,220 psi | 65% | 2933 fps | 96.2% |
| Hodgdon H4350 | <<locked>> | 80% | 44,092 psi | 69% | 2959 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 94% | 51,097 psi | 80% | 3110 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 96% | 53,751 psi | 84% | 3159 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,491 psi | 56% | 2772 fps | 98.7% |
| Hodgdon Retumbo | <<locked>> | 98% | 43,265 psi | 68% | 3100 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 40,393 psi | 63% | 2940 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,108 psi | 42% | 1808 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,415 psi | 79% | 3041 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,750 psi | 83% | 3077 fps | 98.7% |
| IMR 4350 | <<locked>> | 82% | 41,220 psi | 65% | 2877 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,498 psi | 70% | 2936 fps | 97% |
| IMR 4831 | <<locked>> | 80% | 37,579 psi | 59% | 2825 fps | 97.8% |
| IMR 4895 | <<locked>> | 80% | 53,258 psi | 83% | 3136 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 52,721 psi | 83% | 3107 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 96% | 48,718 psi | 76% | 3136 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 50,662 psi | 79% | 3038 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,843 psi | 66% | 2877 fps | 97.7% |
| Lovex S070 | <<locked>> | 80% | 40,103 psi | 63% | 2851 fps | 96% |
| Lovex S071 | <<locked>> | 92% | 36,535 psi | 57% | 2789 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 51,256 psi | 80% | 3091 fps | 100% |
| Norma 204 | <<locked>> | 84% | 43,976 psi | 69% | 2976 fps | 95% |
| Norma MRP | 81.5 gr | 88% | 40,059 psi | 63% | 2976 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 38,928 psi | 61% | 2874 fps | 98% |
| Ramshot Big Game | <<locked>> | 80% | 52,170 psi | 82% | 3120 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 48,849 psi | 77% | 3150 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 37,869 psi | 59% | 2854 fps | 96% |
| Ramshot Magnum | <<locked>> | 94% | 40,393 psi | 63% | 2933 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,644 psi | 43% | 1850 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,458 psi | 78% | 3038 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,296 psi | 73% | 3091 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,015 psi | 61% | 2894 fps | 97.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,869 psi | 59% | 2904 fps | 97.2% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 40,147 psi | 63% | 3009 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 52,431 psi | 82% | 3054 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,180 psi | 72% | 2982 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 48,153 psi | 75% | 3028 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 90% | 45,339 psi | 71% | 3025 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 42,902 psi | 67% | 2900 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,843 psi | 66% | 2877 fps | 97.7% |
| Shooters World Precision | <<locked>> | 80% | 50,662 psi | 79% | 3038 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,103 psi | 63% | 2851 fps | 96% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,703 psi | 75% | 3045 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,297 psi | 74% | 2887 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,973 psi | 64% | 2815 fps | 96.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 44,933 psi | 70% | 3018 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 46,369 psi | 73% | 2982 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 52,982 psi | 83% | 3084 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 35,288 psi | 55% | 2818 fps | 99.5% |
| Somchem S385 | <<locked>> | 86% | 40,103 psi | 63% | 2874 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 52,939 psi | 83% | 3015 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,200 psi | 83% | 3031 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,396 psi | 70% | 2904 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,277 psi | 63% | 2871 fps | 98.3% |
| Vihtavuori N165 | <<locked>> | 92% | 42,482 psi | 67% | 2917 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 51,430 psi | 81% | 3018 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,769 psi | 62% | 2871 fps | 98% |
| Vihtavuori N555 | <<locked>> | 80% | 30,690 psi | 48% | 2687 fps | 95.7% |
| Vihtavuori N560 | 87.1 gr | 94% | 50,140 psi | 79% | 3176 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,479 psi | 62% | 2838 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 41,379 psi | 65% | 2933 fps | 96.2% |
| Winchester StaBALL HD | <<locked>> | 82% | 26,179 psi | 41% | 2625 fps | 95.1% |
| Winchester Supreme 780 | <<locked>> | 92% | 45,716 psi | 72% | 2992 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 88 powders for .300 Norma Mag. loaded with the .308 | 150gr | Peregrine Bushmaster (VRG-3). Alliant Reloder-26 delivers the highest muzzle velocity at 3,310 fps; across all powders the maximum-charge window runs from 2,021 fps to 3,310 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 88 of the 88 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-25, Bofors RP15 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, Alliant Reloder-26 rank at the top here: for .300 Norma Mag. with the .308 | 150gr | Peregrine Bushmaster (VRG-3) 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.