Load Specifications
Load data in caliber .300 PRC with .308 | 167gr | MRR Green Hunting bullet and 89 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Vihtavuori N560.
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% | 56,739 psi | 87% | 2969 fps | 99.2% |
| Accurate 3100 | <<locked>> | 98% | 56,043 psi | 86% | 3018 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 55,927 psi | 86% | 2940 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 57,769 psi | 89% | 3064 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 57,696 psi | 89% | 3173 fps | 98.3% |
| Accurate MAGPRO | <<locked>> | 96% | 54,737 psi | 84% | 3107 fps | 96.5% |
| ADI AR 2208 | <<locked>> | 84% | 56,231 psi | 87% | 2982 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,216 psi | 85% | 3058 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 98% | 56,652 psi | 87% | 3117 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,914 psi | 60% | 2808 fps | 96.6% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 55,347 psi | 85% | 3054 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 57,203 psi | 88% | 3005 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 57,377 psi | 88% | 3031 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,013 psi | 85% | 3071 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 56,391 psi | 87% | 3091 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 58,305 psi | 90% | 3107 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,072 psi | 86% | 3110 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 57,043 psi | 88% | 3087 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,052 psi | 75% | 3022 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 57,682 psi | 89% | 3182 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,998 psi | 85% | 3091 fps | 98.6% |
| Bofors RP3 | <<locked>> | 84% | 58,102 psi | 89% | 3022 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 56,072 psi | 86% | 3110 fps | 98.8% |
| Bofors RP7 | <<locked>> | 88% | 57,363 psi | 88% | 3015 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,501 psi | 75% | 2963 fps | 96.9% |
| Hodgdon H380 | <<locked>> | 84% | 58,450 psi | 90% | 3041 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 56,260 psi | 87% | 3064 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 55,492 psi | 85% | 3022 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 96% | 56,681 psi | 87% | 3058 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 55,564 psi | 85% | 3038 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 55,390 psi | 85% | 2992 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,182 psi | 74% | 3068 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 88% | 56,768 psi | 87% | 3104 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,535 psi | 56% | 1896 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,463 psi | 85% | 2963 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 57,856 psi | 89% | 3002 fps | 99.7% |
| IMR 4350 | <<locked>> | 92% | 58,813 psi | 90% | 3051 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,492 psi | 85% | 2989 fps | 99.4% |
| IMR 4831 | <<locked>> | 92% | 58,189 psi | 90% | 3054 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 58,015 psi | 89% | 3045 fps | 97.6% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 58,160 psi | 89% | 3156 fps | 98.2% |
| Lovex S062 | <<locked>> | 82% | 55,767 psi | 86% | 2956 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,593 psi | 86% | 2979 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 57,174 psi | 88% | 3028 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,763 psi | 77% | 2917 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 56,681 psi | 87% | 3015 fps | 100% |
| Norma 204 | <<locked>> | 90% | 56,086 psi | 86% | 3051 fps | 98.5% |
| Norma MRP | <<locked>> | 96% | 55,811 psi | 86% | 3133 fps | 99.6% |
| Norma URP | <<locked>> | 90% | 56,391 psi | 87% | 3051 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 57,769 psi | 89% | 3041 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,795 psi | 84% | 3107 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 90% | 55,259 psi | 85% | 3051 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,852 psi | 81% | 3041 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,333 psi | 57% | 1942 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 58,218 psi | 90% | 3028 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 55,753 psi | 86% | 3077 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 58,073 psi | 89% | 3091 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 56,463 psi | 87% | 3120 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,370 psi | 74% | 3064 fps | 99.2% |
| Rottweil R 902 | <<locked>> | 82% | 57,595 psi | 89% | 2966 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 58,421 psi | 90% | 3018 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 56,681 psi | 87% | 3028 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 96% | 57,696 psi | 89% | 3094 fps | 99% |
| Rottweil R 907 | <<locked>> | 88% | 57,363 psi | 88% | 3015 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,593 psi | 86% | 2979 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 55,767 psi | 86% | 2956 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 57,174 psi | 88% | 3028 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 56,463 psi | 87% | 3028 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 58,813 psi | 90% | 2894 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,143 psi | 85% | 2933 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 57,232 psi | 88% | 3087 fps | 98.9% |
| Somchem S355 | <<locked>> | 86% | 58,160 psi | 89% | 3015 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 58,508 psi | 90% | 3022 fps | 97.5% |
| Somchem S365 | <<locked>> | 92% | 56,362 psi | 87% | 3051 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 58,189 psi | 90% | 3064 fps | 99.5% |
| Vihtavuori N135 | <<locked>> | 82% | 58,247 psi | 90% | 2920 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 58,392 psi | 90% | 2936 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 55,927 psi | 86% | 2936 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 58,436 psi | 90% | 3045 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 57,740 psi | 89% | 3041 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 82% | 56,608 psi | 87% | 2933 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 57,580 psi | 89% | 3048 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 55,434 psi | 85% | 3058 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 55,854 psi | 86% | 3127 fps | 97.3% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,387 psi | 79% | 3028 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 58,334 psi | 90% | 3002 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 56,478 psi | 87% | 3071 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,809 psi | 83% | 3166 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 58,653 psi | 90% | 3064 fps | 99% |
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% | 52,997 psi | 82% | 2907 fps | 98.8% |
| Accurate 3100 | <<locked>> | 84% | 34,301 psi | 53% | 2595 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 52,562 psi | 81% | 2890 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,770 psi | 63% | 2766 fps | 99.1% |
| Accurate High Country | <<locked>> | 90% | 46,557 psi | 72% | 2969 fps | 95.8% |
| Accurate MAGPRO | <<locked>> | 94% | 50,894 psi | 78% | 3038 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 49,574 psi | 76% | 2874 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 42,061 psi | 65% | 2808 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 92% | 46,122 psi | 71% | 2920 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 98% | 36,405 psi | 56% | 2743 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 42,337 psi | 65% | 2808 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,386 psi | 78% | 2897 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,766 psi | 83% | 2972 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,479 psi | 61% | 2776 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,411 psi | 70% | 2907 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 41,887 psi | 64% | 2802 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 90% | 42,656 psi | 66% | 2858 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,892 psi | 44% | 2513 fps | 97.2% |
| Alliant Reloder-25 | <<locked>> | 88% | 32,909 psi | 51% | 2644 fps | 95.8% |
| Alliant Reloder-26 | 72.8 gr | 80% | 31,125 psi | 48% | 2628 fps | 95.8% |
| Bofors RP15 | <<locked>> | 92% | 42,061 psi | 65% | 2844 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 50,836 psi | 78% | 2907 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 42,656 psi | 66% | 2858 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 44,309 psi | 68% | 2779 fps | 97.3% |
| Hodgdon H1000 | <<locked>> | 98% | 45,266 psi | 70% | 2894 fps | 96% |
| Hodgdon H380 | <<locked>> | 80% | 51,039 psi | 79% | 2927 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 42,743 psi | 66% | 2815 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 80% | 45,643 psi | 70% | 2841 fps | 96.9% |
| Hodgdon H4831 | <<locked>> | 92% | 49,414 psi | 76% | 2930 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 48,428 psi | 75% | 2913 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,086 psi | 57% | 2661 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,378 psi | 61% | 2858 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 41,916 psi | 64% | 2828 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,282 psi | 42% | 1696 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,141 psi | 80% | 2910 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 54,288 psi | 84% | 2943 fps | 99.4% |
| IMR 4350 | <<locked>> | 80% | 39,972 psi | 61% | 2703 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,934 psi | 71% | 2815 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 39,001 psi | 60% | 2710 fps | 98.8% |
| IMR 4955 Enduron | <<locked>> | 90% | 47,834 psi | 74% | 2864 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 94% | 47,253 psi | 73% | 2959 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 52,286 psi | 80% | 2900 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,265 psi | 67% | 2756 fps | 98.6% |
| Lovex S070 | <<locked>> | 80% | 41,437 psi | 64% | 2736 fps | 97.3% |
| Lovex S071 | <<locked>> | 88% | 33,431 psi | 51% | 2575 fps | 95.4% |
| Norma 203B | <<locked>> | 80% | 53,084 psi | 82% | 2956 fps | 100% |
| Norma 204 | <<locked>> | 82% | 42,482 psi | 65% | 2795 fps | 95.5% |
| Norma MRP | 74.2 gr | 84% | 36,158 psi | 56% | 2733 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 40,350 psi | 62% | 2756 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 80% | 53,925 psi | 83% | 2982 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 43,801 psi | 67% | 2897 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 39,349 psi | 61% | 2746 fps | 97.3% |
| Ramshot Magnum | <<locked>> | 92% | 38,914 psi | 60% | 2762 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,891 psi | 43% | 1739 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,053 psi | 79% | 2910 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,283 psi | 74% | 2963 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,741 psi | 63% | 2782 fps | 98.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,363 psi | 61% | 2795 fps | 98.4% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,158 psi | 56% | 2766 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 53,969 psi | 83% | 2913 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,747 psi | 73% | 2854 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 46,630 psi | 72% | 2851 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 86% | 41,104 psi | 63% | 2785 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 44,309 psi | 68% | 2779 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,265 psi | 67% | 2756 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 52,286 psi | 80% | 2900 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,437 psi | 64% | 2736 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,371 psi | 76% | 2913 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,733 psi | 75% | 2749 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,293 psi | 65% | 2700 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 40,741 psi | 63% | 2779 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 47,950 psi | 74% | 2851 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 47,776 psi | 74% | 2841 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 37,028 psi | 57% | 2710 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 38,870 psi | 60% | 2703 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 54,679 psi | 84% | 2871 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 54,737 psi | 84% | 2887 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 45,818 psi | 70% | 2776 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,916 psi | 64% | 2759 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 38,421 psi | 59% | 2684 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 52,910 psi | 81% | 2877 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,191 psi | 63% | 2756 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 80% | 32,169 psi | 49% | 2589 fps | 97.3% |
| Vihtavuori N560 | 81.3 gr | 92% | 48,544 psi | 75% | 2992 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 98% | 47,993 psi | 74% | 2966 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,959 psi | 63% | 2723 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,931 psi | 66% | 2818 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,498 psi | 39% | 2480 fps | 96.1% |
| Winchester Supreme 780 | <<locked>> | 88% | 41,017 psi | 63% | 2749 fps | 95.2% |
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 PRC loaded with the .308 | 167gr | MRR Green Hunting. Alliant Reloder-26 delivers the highest muzzle velocity at 3,182 fps; across all powders the maximum-charge window runs from 1,896 fps to 3,182 fps. ADI AR 2225 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. The 167.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-23, 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. Alliant Reloder-26, Norma MRP, Vihtavuori N560 rank at the top here: for .300 PRC with the .308 | 167gr | MRR Green Hunting 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.