Load Specifications
Load data in caliber .300 PRC with .308 | 190gr | Remington SP Extended-Range BT bullet and 71 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Winchester StaBALL HD and ReloadSwiss RS 76.
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>> | 92% | 55,767 psi | 86% | 2851 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 56,797 psi | 87% | 2877 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 58,160 psi | 89% | 3002 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 90% | 57,566 psi | 89% | 2936 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 92% | 55,419 psi | 85% | 2943 fps | 99% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,301 psi | 82% | 2907 fps | 99% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,877 psi | 74% | 2867 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 57,551 psi | 89% | 2927 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 58,726 psi | 90% | 2936 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 56,971 psi | 88% | 2927 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 55,666 psi | 86% | 2940 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 94% | 56,956 psi | 88% | 2907 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 56,449 psi | 87% | 2969 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 57,725 psi | 89% | 2999 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 56,637 psi | 87% | 2904 fps | 96.9% |
| Bofors RP15 | <<locked>> | 96% | 58,378 psi | 90% | 2982 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 56,318 psi | 87% | 2979 fps | 99.4% |
| Bofors RP5 | <<locked>> | 92% | 55,666 psi | 86% | 2940 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 58,479 psi | 90% | 2874 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 58,755 psi | 90% | 2992 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 84% | 58,204 psi | 90% | 2930 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 56,927 psi | 88% | 2884 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 90% | 55,114 psi | 85% | 2881 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 92% | 57,856 psi | 89% | 2923 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 57,972 psi | 89% | 2854 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 55,463 psi | 85% | 3051 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 54,897 psi | 84% | 2907 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,260 psi | 57% | 1811 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 56,695 psi | 87% | 2861 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 56,217 psi | 86% | 2841 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 56,884 psi | 88% | 2864 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 56,028 psi | 86% | 2864 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 94% | 57,203 psi | 88% | 2982 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 43,279 psi | 67% | 2766 fps | 97% |
| Lovex S065 | <<locked>> | 84% | 57,029 psi | 88% | 2838 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 55,288 psi | 85% | 2838 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 57,029 psi | 88% | 2867 fps | 100% |
| Norma 204 | <<locked>> | 86% | 57,798 psi | 89% | 2920 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 43,656 psi | 67% | 2795 fps | 99% |
| Norma MRP | <<locked>> | 90% | 55,550 psi | 85% | 2956 fps | 100% |
| Norma URP | <<locked>> | 86% | 58,624 psi | 90% | 2907 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 58,363 psi | 90% | 3009 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 86% | 57,450 psi | 88% | 2917 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 56,681 psi | 87% | 2936 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,174 psi | 59% | 1854 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 56,724 psi | 87% | 2897 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 55,056 psi | 85% | 2923 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 56,101 psi | 86% | 3041 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 55,303 psi | 85% | 2995 fps | 98.4% |
| Rottweil R 904 | <<locked>> | 90% | 58,494 psi | 90% | 2907 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 90% | 56,637 psi | 87% | 2913 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 58,479 psi | 90% | 2874 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 57,029 psi | 88% | 2838 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 55,288 psi | 85% | 2838 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 56,173 psi | 86% | 2795 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 56,217 psi | 86% | 2913 fps | 99.7% |
| Somchem S361 | <<locked>> | 88% | 56,217 psi | 86% | 2841 fps | 98.6% |
| Somchem S365 | <<locked>> | 86% | 55,767 psi | 86% | 2861 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 57,130 psi | 88% | 2887 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 57,174 psi | 88% | 2782 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 56,753 psi | 87% | 2851 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 56,594 psi | 87% | 2867 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 55,883 psi | 86% | 2854 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 55,506 psi | 85% | 2884 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 55,259 psi | 85% | 2953 fps | 98.6% |
| Vihtavuori N565 | <<locked>> | 96% | 55,274 psi | 85% | 2936 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 56,086 psi | 86% | 2999 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 55,999 psi | 86% | 2802 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 58,421 psi | 90% | 2933 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 55,608 psi | 86% | 2992 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 56,869 psi | 87% | 2884 fps | 99.7% |
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% | 37,217 psi | 57% | 2516 fps | 98.4% |
| Accurate 4350 | <<locked>> | 80% | 49,530 psi | 76% | 2766 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 44,034 psi | 68% | 2749 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 41,147 psi | 63% | 2641 fps | 97.1% |
| ADI AR 2213 | <<locked>> | 82% | 39,407 psi | 61% | 2631 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 92% | 40,770 psi | 63% | 2661 fps | 96% |
| ADI AR 2225 | <<locked>> | 88% | 32,227 psi | 50% | 2500 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,268 psi | 73% | 2769 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 54,911 psi | 84% | 2884 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,205 psi | 63% | 2635 fps | 97.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,130 psi | 57% | 2582 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,897 psi | 55% | 2543 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,009 psi | 48% | 2454 fps | 97% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,581 psi | 61% | 2687 fps | 99.7% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 49,951 psi | 77% | 2785 fps | 95.2% |
| Bofors RP15 | <<locked>> | 82% | 36,956 psi | 57% | 2575 fps | 95.7% |
| Bofors RP30 | <<locked>> | 88% | 37,391 psi | 58% | 2615 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 37,130 psi | 57% | 2582 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 51,605 psi | 79% | 2766 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 88% | 38,943 psi | 60% | 2625 fps | 96% |
| Hodgdon H414 | <<locked>> | 80% | 51,097 psi | 79% | 2815 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 80% | 53,388 psi | 82% | 2828 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 82% | 41,930 psi | 65% | 2638 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 82% | 41,307 psi | 64% | 2625 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,701 psi | 69% | 2651 fps | 100% |
| Hodgdon Retumbo | 75.1 gr | 84% | 34,650 psi | 53% | 2598 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 50,937 psi | 78% | 2841 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,050 psi | 43% | 1621 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,934 psi | 72% | 2697 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,968 psi | 81% | 2792 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 46,876 psi | 72% | 2707 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,814 psi | 63% | 2582 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 84% | 40,683 psi | 63% | 2674 fps | 95.7% |
| IMR 8133 Enduron | <<locked>> | 96% | 37,971 psi | 58% | 2648 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 50,589 psi | 78% | 2740 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,820 psi | 75% | 2730 fps | 99.7% |
| Lovex S071 | <<locked>> | 80% | 32,068 psi | 49% | 2395 fps | 96.7% |
| Norma 204 | <<locked>> | 80% | 47,210 psi | 73% | 2743 fps | 98.4% |
| Norma 217 | <<locked>> | 92% | 33,286 psi | 51% | 2552 fps | 95.6% |
| Norma MRP | <<locked>> | 80% | 39,001 psi | 60% | 2651 fps | 97.9% |
| Norma URP | <<locked>> | 80% | 48,283 psi | 74% | 2746 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 37,637 psi | 58% | 2615 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 47,137 psi | 73% | 2746 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 82% | 33,620 psi | 52% | 2497 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,631 psi | 44% | 1657 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,516 psi | 76% | 2785 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,645 psi | 73% | 2805 fps | 100% |
| ReloadSwiss RS 76 | 78.4 gr | 82% | 31,415 psi | 48% | 2503 fps | 95.1% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 43,903 psi | 68% | 2789 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 42,438 psi | 65% | 2621 fps | 96.4% |
| Rottweil R 905 | <<locked>> | 80% | 40,698 psi | 63% | 2625 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 80% | 51,605 psi | 79% | 2766 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,589 psi | 78% | 2740 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,820 psi | 75% | 2730 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,458 psi | 76% | 2687 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,364 psi | 62% | 2621 fps | 97.1% |
| Somchem S361 | <<locked>> | 80% | 43,105 psi | 66% | 2612 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 45,585 psi | 70% | 2703 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,205 psi | 63% | 2608 fps | 98% |
| Vihtavuori N150 | <<locked>> | 80% | 53,577 psi | 82% | 2733 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 49,734 psi | 77% | 2743 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,766 psi | 55% | 2480 fps | 96.1% |
| Vihtavuori N550 | <<locked>> | 80% | 48,979 psi | 75% | 2743 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,103 psi | 62% | 2618 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 41,785 psi | 64% | 2700 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 86% | 39,450 psi | 61% | 2635 fps | 95% |
| Vihtavuori N568 | <<locked>> | 94% | 45,237 psi | 70% | 2802 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,863 psi | 75% | 2700 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,097 psi | 79% | 2815 fps | 99.8% |
| Winchester StaBALL HD | 73.4 gr | 80% | 32,256 psi | 50% | 2569 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,637 psi | 58% | 2530 fps | 96.1% |
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 76 powders for .300 PRC loaded with the .308 | 190gr | Remington SP Extended-Range BT. Hodgdon Retumbo delivers the highest muzzle velocity at 3,051 fps; across all powders the maximum-charge window runs from 1,811 fps to 3,051 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 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 1:6.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2218, ADI AR 2225 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. Hodgdon Retumbo, Winchester StaBALL HD, ReloadSwiss RS 76 rank at the top here: for .300 PRC with the .308 | 190gr | Remington SP Extended-Range BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2218, IMR 7977 Enduron, Vihtavuori N170 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.