Load Specifications
Load data in caliber .300 PRC with .308 | 180gr | Sako Hammerhead bullet and 79 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Accurate High Country and Norma MRP.
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>> | 96% | 58,508 psi | 90% | 2953 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 56,043 psi | 86% | 2933 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 56,159 psi | 86% | 3048 fps | 98.7% |
| Accurate MAGPRO | <<locked>> | 94% | 57,159 psi | 88% | 3051 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 82% | 56,971 psi | 88% | 2894 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 56,753 psi | 87% | 2989 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 96% | 58,363 psi | 90% | 3051 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,878 psi | 75% | 2881 fps | 97.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,569 psi | 67% | 2838 fps | 99% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 57,101 psi | 88% | 2989 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 58,378 psi | 90% | 2913 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 56,753 psi | 87% | 2989 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 58,131 psi | 89% | 3005 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,391 psi | 87% | 2979 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 58,305 psi | 90% | 3045 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 55,695 psi | 86% | 2963 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,085 psi | 85% | 3022 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 56,188 psi | 86% | 3051 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 56,463 psi | 87% | 2949 fps | 95.9% |
| Bofors RP15 | <<locked>> | 98% | 57,217 psi | 88% | 3028 fps | 99.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,937 psi | 78% | 2953 fps | 98.2% |
| Bofors RP5 | <<locked>> | 96% | 58,305 psi | 90% | 3045 fps | 99.6% |
| Bofors RP7 | <<locked>> | 86% | 58,291 psi | 90% | 2933 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,012 psi | 83% | 2976 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 86% | 57,653 psi | 89% | 2986 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 56,768 psi | 87% | 2946 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 94% | 58,363 psi | 90% | 2989 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 57,043 psi | 88% | 2969 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,145 psi | 88% | 2910 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,896 psi | 83% | 3091 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 86% | 58,363 psi | 90% | 3025 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,144 psi | 57% | 1844 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,420 psi | 87% | 2920 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,231 psi | 87% | 2904 fps | 99.8% |
| IMR 4831 | <<locked>> | 88% | 56,289 psi | 87% | 2923 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,535 psi | 85% | 2913 fps | 98% |
| IMR 7828 SSC | <<locked>> | 96% | 55,985 psi | 86% | 3025 fps | 98.6% |
| Lovex S065 | <<locked>> | 86% | 56,927 psi | 88% | 2904 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 58,653 psi | 90% | 2949 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 55,840 psi | 86% | 2917 fps | 100% |
| Norma 204 | <<locked>> | 88% | 57,508 psi | 88% | 2976 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 39,102 psi | 60% | 2759 fps | 97.2% |
| Norma MRP | <<locked>> | 94% | 58,291 psi | 90% | 3071 fps | 100% |
| Norma URP | <<locked>> | 88% | 58,073 psi | 89% | 2969 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 57,014 psi | 88% | 3051 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 56,956 psi | 88% | 2976 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,230 psi | 85% | 2982 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,869 psi | 58% | 1886 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 57,696 psi | 89% | 2989 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,970 psi | 86% | 2956 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 58,233 psi | 90% | 3041 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,679 psi | 84% | 3087 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,429 psi | 76% | 2959 fps | 96.4% |
| Rottweil R 903 | <<locked>> | 82% | 56,188 psi | 86% | 2881 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 57,899 psi | 89% | 2956 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 92% | 55,912 psi | 86% | 2969 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 86% | 58,291 psi | 90% | 2933 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,927 psi | 88% | 2904 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 58,653 psi | 90% | 2949 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 57,740 psi | 89% | 2940 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,898 psi | 86% | 2753 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,289 psi | 87% | 2858 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,463 psi | 85% | 2963 fps | 99.3% |
| Somchem S355 | <<locked>> | 82% | 55,738 psi | 86% | 2874 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,028 psi | 86% | 2894 fps | 97.9% |
| Somchem S365 | <<locked>> | 90% | 58,566 psi | 90% | 2969 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 56,318 psi | 87% | 2936 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 84% | 57,058 psi | 88% | 2848 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,260 psi | 87% | 2910 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 55,854 psi | 86% | 2920 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 86% | 55,419 psi | 85% | 2913 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 58,030 psi | 89% | 2989 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 58,088 psi | 89% | 3064 fps | 98.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 57,870 psi | 89% | 3041 fps | 98.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 50,575 psi | 78% | 2966 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 55,666 psi | 86% | 2867 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 57,870 psi | 89% | 2992 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 57,508 psi | 88% | 3100 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 56,260 psi | 87% | 2933 fps | 99.3% |
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 3100 | <<locked>> | 80% | 34,040 psi | 52% | 2500 fps | 96.7% |
| Accurate 4350 | <<locked>> | 80% | 45,614 psi | 70% | 2762 fps | 99.9% |
| Accurate High Country | 75.3 gr | 84% | 42,424 psi | 65% | 2785 fps | 95.5% |
| Accurate MAGPRO | <<locked>> | 88% | 46,195 psi | 71% | 2854 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 53,505 psi | 82% | 2838 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,130 psi | 59% | 2631 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 88% | 44,425 psi | 68% | 2799 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 96% | 42,772 psi | 66% | 2756 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 92% | 33,649 psi | 52% | 2589 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 38,406 psi | 59% | 2628 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 54,824 psi | 84% | 2864 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,642 psi | 67% | 2769 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,531 psi | 78% | 2890 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,058 psi | 59% | 2621 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 84% | 39,001 psi | 60% | 2684 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,648 psi | 50% | 2530 fps | 99.3% |
| Alliant Reloder-25 | <<locked>> | 82% | 30,472 psi | 47% | 2490 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,723 psi | 55% | 2664 fps | 98.6% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 53,098 psi | 82% | 2890 fps | 95% |
| Bofors RP15 | <<locked>> | 86% | 38,609 psi | 59% | 2674 fps | 95.4% |
| Bofors RP30 | <<locked>> | 94% | 41,568 psi | 64% | 2772 fps | 95.8% |
| Bofors RP5 | <<locked>> | 84% | 39,001 psi | 60% | 2684 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 48,428 psi | 75% | 2769 fps | 98.8% |
| Hodgdon H1000 | <<locked>> | 92% | 40,959 psi | 63% | 2720 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 47,253 psi | 73% | 2812 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 80% | 49,879 psi | 77% | 2828 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 86% | 44,483 psi | 68% | 2746 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 88% | 46,601 psi | 72% | 2785 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,263 psi | 63% | 2654 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 36,114 psi | 56% | 2690 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 46,833 psi | 72% | 2835 fps | 98.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,818 psi | 43% | 1647 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,903 psi | 68% | 2697 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,676 psi | 76% | 2792 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 43,468 psi | 67% | 2707 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 84% | 43,279 psi | 67% | 2687 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 88% | 42,685 psi | 66% | 2772 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 47,224 psi | 73% | 2743 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 45,658 psi | 70% | 2733 fps | 98.9% |
| Lovex S071 | <<locked>> | 82% | 31,299 psi | 48% | 2431 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 43,845 psi | 67% | 2733 fps | 96.9% |
| Norma 217 | <<locked>> | 96% | 34,229 psi | 53% | 2635 fps | 95.1% |
| Norma MRP | 71.7 gr | 80% | 35,447 psi | 55% | 2628 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 44,831 psi | 69% | 2749 fps | 99.9% |
| Ramshot Grand | <<locked>> | 88% | 42,540 psi | 65% | 2785 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 43,671 psi | 67% | 2743 fps | 99% |
| Ramshot Magnum | <<locked>> | 86% | 35,389 psi | 54% | 2595 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,369 psi | 44% | 1686 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 53,679 psi | 83% | 2933 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,571 psi | 70% | 2782 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,729 psi | 67% | 2795 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 35,447 psi | 55% | 2671 fps | 96.1% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 45,745 psi | 70% | 2887 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 52,678 psi | 81% | 2831 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 42,163 psi | 65% | 2671 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 80% | 37,420 psi | 58% | 2608 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 48,428 psi | 75% | 2769 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,224 psi | 73% | 2743 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 45,658 psi | 70% | 2733 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 54,027 psi | 83% | 2884 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,605 psi | 81% | 2707 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,311 psi | 71% | 2690 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,086 psi | 57% | 2605 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 52,344 psi | 81% | 2822 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 45,905 psi | 71% | 2720 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 41,814 psi | 64% | 2707 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,043 psi | 59% | 2595 fps | 96.4% |
| Vihtavuori N150 | <<locked>> | 80% | 50,198 psi | 77% | 2746 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,151 psi | 71% | 2743 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 37,623 psi | 58% | 2579 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 80% | 45,542 psi | 70% | 2746 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 36,709 psi | 56% | 2608 fps | 99.2% |
| Vihtavuori N560 | 77.1 gr | 86% | 44,005 psi | 68% | 2808 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 92% | 44,034 psi | 68% | 2792 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 98% | 47,137 psi | 73% | 2900 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,339 psi | 70% | 2707 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,442 psi | 73% | 2815 fps | 99.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 29,080 psi | 45% | 2539 fps | 99.3% |
| Winchester Supreme 780 | <<locked>> | 82% | 37,202 psi | 57% | 2575 fps | 95% |
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 79 powders for .300 PRC loaded with the .308 | 180gr | Sako Hammerhead. Winchester StaBALL HD delivers the highest muzzle velocity at 3,100 fps; across all powders the maximum-charge window runs from 1,844 fps to 3,100 fps. ADI AR 2217 gives the best case fill at 100 %, and 79 of the 79 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. 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. Vihtavuori N560, Accurate High Country, Norma MRP rank at the top here: for .300 PRC with the .308 | 180gr | Sako Hammerhead 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.