Load Specifications
Load data in caliber .300 PRC with .308 | 190gr | Hornady CX bullet and 81 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Accurate MAGPRO and Ramshot Grand.
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 3100 | <<locked>> | 96% | 56,420 psi | 87% | 2854 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 57,928 psi | 89% | 2887 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 55,143 psi | 85% | 2949 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 82% | 55,666 psi | 86% | 2795 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 55,259 psi | 85% | 2890 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 96% | 56,608 psi | 87% | 2949 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,326 psi | 73% | 2785 fps | 97.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,872 psi | 64% | 2740 fps | 98.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 55,405 psi | 85% | 2887 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,869 psi | 87% | 2818 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 55,245 psi | 85% | 2890 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 56,449 psi | 87% | 2904 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 58,305 psi | 90% | 2933 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 96% | 56,347 psi | 87% | 2943 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 98% | 57,580 psi | 89% | 2913 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,098 psi | 82% | 2920 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 58,233 psi | 90% | 3009 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 58,624 psi | 90% | 2913 fps | 96.7% |
| Bofors RP15 | <<locked>> | 98% | 55,274 psi | 85% | 2927 fps | 99.4% |
| Bofors RP3 | <<locked>> | 82% | 57,827 psi | 89% | 2835 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 49,081 psi | 76% | 2854 fps | 98.1% |
| Bofors RP5 | <<locked>> | 96% | 56,347 psi | 87% | 2943 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 56,942 psi | 88% | 2838 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,272 psi | 80% | 2877 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 82% | 58,117 psi | 89% | 2858 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 56,086 psi | 86% | 2887 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 55,347 psi | 85% | 2848 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 94% | 56,724 psi | 87% | 2890 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 55,579 psi | 86% | 2874 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 55,651 psi | 86% | 2815 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,011 psi | 80% | 2982 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 86% | 56,608 psi | 87% | 2927 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,883 psi | 57% | 1778 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 58,595 psi | 90% | 2825 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 58,653 psi | 90% | 2877 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 86% | 58,465 psi | 90% | 2861 fps | 100% |
| IMR 4831 | <<locked>> | 90% | 58,334 psi | 90% | 2877 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 57,667 psi | 89% | 2874 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 98% | 58,392 psi | 90% | 2989 fps | 99.1% |
| Lovex S065 | <<locked>> | 88% | 58,813 psi | 90% | 2854 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 56,927 psi | 88% | 2851 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,635 psi | 83% | 2812 fps | 100% |
| Norma 204 | <<locked>> | 88% | 55,985 psi | 86% | 2881 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 37,289 psi | 57% | 2657 fps | 96.9% |
| Norma MRP | <<locked>> | 94% | 56,333 psi | 87% | 2966 fps | 100% |
| Norma URP | <<locked>> | 88% | 56,347 psi | 87% | 2871 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,984 psi | 85% | 2946 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 55,376 psi | 85% | 2877 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 57,435 psi | 88% | 2943 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,594 psi | 58% | 1818 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 57,740 psi | 89% | 2848 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 56,043 psi | 86% | 2890 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 58,175 psi | 89% | 2913 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 56,536 psi | 87% | 2940 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 52,547 psi | 81% | 2982 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 47,282 psi | 73% | 2854 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 84% | 58,160 psi | 89% | 2835 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 56,434 psi | 87% | 2861 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 94% | 57,711 psi | 89% | 2923 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 86% | 56,942 psi | 88% | 2838 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 88% | 58,813 psi | 90% | 2854 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 56,927 psi | 88% | 2851 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 56,159 psi | 86% | 2841 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 58,189 psi | 90% | 2707 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 58,407 psi | 90% | 2815 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 57,246 psi | 88% | 2917 fps | 99.6% |
| Somchem S355 | <<locked>> | 84% | 57,682 psi | 89% | 2825 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 58,131 psi | 89% | 2854 fps | 98.4% |
| Somchem S365 | <<locked>> | 90% | 56,855 psi | 87% | 2874 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 58,334 psi | 90% | 2897 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 55,521 psi | 85% | 2753 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 58,334 psi | 90% | 2864 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 57,812 psi | 89% | 2874 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 57,450 psi | 88% | 2867 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 55,912 psi | 86% | 2887 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 56,246 psi | 87% | 2963 fps | 98.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 55,709 psi | 86% | 2940 fps | 98.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 58,059 psi | 89% | 2822 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 56,318 psi | 87% | 2890 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 54,955 psi | 85% | 2992 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 58,595 psi | 90% | 2897 fps | 99.6% |
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% | 32,445 psi | 50% | 2405 fps | 96.5% |
| Accurate 4350 | <<locked>> | 80% | 43,961 psi | 68% | 2664 fps | 99.9% |
| Accurate MAGPRO | 76.7 gr | 88% | 44,498 psi | 68% | 2756 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 52,272 psi | 80% | 2746 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 36,811 psi | 57% | 2536 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 88% | 43,047 psi | 66% | 2703 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 96% | 41,220 psi | 63% | 2661 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 92% | 32,169 psi | 49% | 2493 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 37,188 psi | 57% | 2539 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 53,432 psi | 82% | 2769 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,453 psi | 65% | 2677 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,008 psi | 75% | 2792 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 36,854 psi | 57% | 2536 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 84% | 37,420 psi | 58% | 2589 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,212 psi | 48% | 2434 fps | 99.2% |
| Alliant Reloder-25 | <<locked>> | 82% | 29,051 psi | 45% | 2395 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,040 psi | 52% | 2566 fps | 98.4% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 51,663 psi | 79% | 2795 fps | 95% |
| Bofors RP15 | <<locked>> | 86% | 37,101 psi | 57% | 2579 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 54,201 psi | 83% | 2782 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 39,682 psi | 61% | 2667 fps | 95.6% |
| Bofors RP5 | <<locked>> | 84% | 37,420 psi | 58% | 2589 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 46,920 psi | 72% | 2671 fps | 98.8% |
| Hodgdon H1000 | <<locked>> | 92% | 39,436 psi | 61% | 2625 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 54,317 psi | 84% | 2805 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 45,905 psi | 71% | 2717 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 80% | 48,588 psi | 75% | 2736 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 86% | 43,004 psi | 66% | 2651 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 88% | 45,194 psi | 70% | 2694 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,813 psi | 61% | 2559 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 37,159 psi | 57% | 2661 fps | 96.2% |
| Hodgdon Superformance | <<locked>> | 80% | 45,324 psi | 70% | 2740 fps | 98.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,601 psi | 42% | 1588 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 55,013 psi | 85% | 2776 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,554 psi | 65% | 2605 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,573 psi | 75% | 2700 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 41,843 psi | 64% | 2612 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 84% | 42,032 psi | 65% | 2595 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 88% | 41,263 psi | 63% | 2677 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 45,832 psi | 71% | 2648 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 44,077 psi | 68% | 2635 fps | 98.9% |
| Lovex S071 | <<locked>> | 82% | 29,602 psi | 46% | 2329 fps | 95.3% |
| Norma 204 | <<locked>> | 80% | 42,467 psi | 65% | 2641 fps | 96.9% |
| Norma 217 | <<locked>> | 98% | 34,853 psi | 54% | 2595 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 33,953 psi | 52% | 2530 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 43,236 psi | 67% | 2654 fps | 99.9% |
| Ramshot Grand | 74.6 gr | 88% | 40,973 psi | 63% | 2687 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 42,192 psi | 65% | 2648 fps | 99% |
| Ramshot Magnum | <<locked>> | 86% | 33,852 psi | 52% | 2497 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,137 psi | 43% | 1624 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 54,070 psi | 83% | 2792 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 52,156 psi | 80% | 2838 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,918 psi | 68% | 2687 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,235 psi | 65% | 2700 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 33,808 psi | 52% | 2569 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 43,729 psi | 67% | 2785 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 50,908 psi | 78% | 2730 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 40,901 psi | 63% | 2579 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 80% | 36,071 psi | 55% | 2516 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 46,920 psi | 72% | 2671 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,832 psi | 71% | 2648 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 44,077 psi | 68% | 2635 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 52,547 psi | 81% | 2789 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,430 psi | 79% | 2618 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,889 psi | 69% | 2595 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 35,737 psi | 55% | 2513 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 50,836 psi | 78% | 2726 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 44,382 psi | 68% | 2625 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 40,161 psi | 62% | 2608 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,550 psi | 56% | 2500 fps | 96.3% |
| Vihtavuori N150 | <<locked>> | 80% | 48,660 psi | 75% | 2651 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,875 psi | 69% | 2654 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 36,114 psi | 56% | 2487 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 44,135 psi | 68% | 2654 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 35,070 psi | 54% | 2513 fps | 99.2% |
| Vihtavuori N560 | 73.5 gr | 86% | 42,337 psi | 65% | 2710 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 92% | 42,090 psi | 65% | 2694 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,801 psi | 67% | 2612 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,905 psi | 71% | 2717 fps | 99.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,601 psi | 42% | 2438 fps | 99.2% |
| Winchester Supreme 780 | <<locked>> | 84% | 38,348 psi | 59% | 2543 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 81 powders for .300 PRC loaded with the .308 | 190gr | Hornady CX. Alliant Reloder-26 delivers the highest muzzle velocity at 3,009 fps; across all powders the maximum-charge window runs from 1,778 fps to 3,009 fps. ADI AR 2217 gives the best case fill at 100 %, and 81 of the 81 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 190.0 gr projectile in 0.308" calls for a 1:9.5 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 MAGPRO, Ramshot Grand rank at the top here: for .300 PRC with the .308 | 190gr | Hornady CX 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.