Load Specifications
Load data in caliber .300 PRC with .308 | 185gr | Berger JUG bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Vihtavuori N560 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>> | 94% | 55,898 psi | 86% | 2884 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 57,377 psi | 88% | 2917 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 58,436 psi | 90% | 3038 fps | 98.3% |
| ADI AR 2208 | <<locked>> | 82% | 57,972 psi | 89% | 2871 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 58,030 psi | 89% | 2972 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 94% | 55,724 psi | 86% | 2976 fps | 98.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,893 psi | 77% | 2871 fps | 98% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,541 psi | 69% | 2828 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 58,102 psi | 89% | 2969 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,492 psi | 85% | 2930 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,406 psi | 88% | 2959 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,796 psi | 86% | 2972 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 57,116 psi | 88% | 2943 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,318 psi | 87% | 3002 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 57,638 psi | 89% | 3035 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 57,305 psi | 88% | 2933 fps | 96.4% |
| Bofors RP15 | <<locked>> | 98% | 58,407 psi | 90% | 3012 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,402 psi | 81% | 2943 fps | 98.7% |
| Bofors RP5 | <<locked>> | 94% | 55,796 psi | 86% | 2972 fps | 99.5% |
| Bofors RP7 | <<locked>> | 84% | 55,811 psi | 86% | 2861 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,129 psi | 85% | 2963 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 84% | 55,100 psi | 85% | 2910 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 57,696 psi | 89% | 2927 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 55,680 psi | 86% | 2913 fps | 98.1% |
| Hodgdon H4831 SC | <<locked>> | 94% | 58,320 psi | 90% | 2956 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 58,436 psi | 90% | 2890 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,129 psi | 85% | 3074 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 55,579 psi | 86% | 2949 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,072 psi | 57% | 1818 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,522 psi | 88% | 2904 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 57,276 psi | 88% | 2884 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 57,551 psi | 89% | 2904 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,652 psi | 87% | 2897 fps | 98.4% |
| IMR 7828 SSC | <<locked>> | 96% | 57,406 psi | 88% | 3015 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 58,015 psi | 89% | 2884 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,188 psi | 86% | 2881 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 57,014 psi | 88% | 2900 fps | 100% |
| Norma 204 | <<locked>> | 88% | 58,566 psi | 90% | 2959 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 40,321 psi | 62% | 2756 fps | 97.8% |
| Norma MRP | <<locked>> | 92% | 55,564 psi | 85% | 2992 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 55,651 psi | 86% | 2900 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 58,363 psi | 90% | 3038 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 88% | 58,015 psi | 89% | 2956 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 56,652 psi | 87% | 2969 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,000 psi | 58% | 1864 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 57,276 psi | 88% | 2940 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,593 psi | 86% | 2966 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 56,057 psi | 86% | 3074 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 51,010 psi | 78% | 2956 fps | 97.1% |
| Rottweil R 903 | <<locked>> | 82% | 57,319 psi | 88% | 2861 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 55,463 psi | 85% | 2887 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 92% | 56,971 psi | 88% | 2949 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 84% | 55,811 psi | 86% | 2861 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 58,015 psi | 89% | 2884 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,188 psi | 86% | 2881 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 58,711 psi | 90% | 2917 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,869 psi | 87% | 2730 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,174 psi | 88% | 2838 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,521 psi | 87% | 2946 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 56,826 psi | 87% | 2854 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,971 psi | 88% | 2877 fps | 98.3% |
| Somchem S365 | <<locked>> | 88% | 56,159 psi | 86% | 2900 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 57,580 psi | 89% | 2923 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 58,146 psi | 89% | 2828 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 57,435 psi | 88% | 2890 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,956 psi | 88% | 2900 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 56,565 psi | 87% | 2894 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 55,738 psi | 86% | 2920 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,376 psi | 85% | 2986 fps | 98.3% |
| Vihtavuori N565 | <<locked>> | 98% | 55,216 psi | 85% | 2966 fps | 98.5% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 52,069 psi | 80% | 2963 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,898 psi | 88% | 2848 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,317 psi | 85% | 2913 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 54,824 psi | 84% | 3025 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 57,566 psi | 89% | 2920 fps | 99.5% |
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% | 34,911 psi | 54% | 2490 fps | 97.3% |
| Accurate 4350 | <<locked>> | 80% | 46,702 psi | 72% | 2746 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 47,282 psi | 73% | 2844 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 54,505 psi | 84% | 2822 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,856 psi | 60% | 2618 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 86% | 42,569 psi | 65% | 2730 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 94% | 40,814 psi | 63% | 2684 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 90% | 32,271 psi | 50% | 2523 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,672 psi | 69% | 2753 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,735 psi | 80% | 2871 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,928 psi | 60% | 2615 fps | 95.9% |
| Alliant Reloder-22 | <<locked>> | 82% | 37,275 psi | 57% | 2612 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,475 psi | 51% | 2516 fps | 99.6% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,138 psi | 45% | 2421 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,782 psi | 57% | 2657 fps | 99% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 53,911 psi | 83% | 2877 fps | 95.6% |
| Bofors RP15 | <<locked>> | 84% | 37,086 psi | 57% | 2605 fps | 95.2% |
| Bofors RP30 | <<locked>> | 92% | 39,813 psi | 61% | 2703 fps | 95.5% |
| Bofors RP5 | <<locked>> | 82% | 37,275 psi | 57% | 2612 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 49,182 psi | 76% | 2749 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 39,117 psi | 60% | 2648 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 48,298 psi | 74% | 2799 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 80% | 50,879 psi | 78% | 2815 fps | 99% |
| Hodgdon H4831 | <<locked>> | 84% | 42,453 psi | 65% | 2674 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 86% | 44,643 psi | 69% | 2720 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,235 psi | 65% | 2638 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 37,028 psi | 57% | 2690 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 48,022 psi | 74% | 2825 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,905 psi | 43% | 1627 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,614 psi | 69% | 2680 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,575 psi | 78% | 2776 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 44,483 psi | 68% | 2694 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 43,976 psi | 68% | 2671 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 86% | 40,944 psi | 63% | 2703 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 48,153 psi | 74% | 2726 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 46,572 psi | 72% | 2717 fps | 99.2% |
| Lovex S071 | <<locked>> | 80% | 30,124 psi | 46% | 2369 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 44,672 psi | 69% | 2717 fps | 97.4% |
| Norma 217 | <<locked>> | 96% | 35,230 psi | 54% | 2631 fps | 96% |
| Norma MRP | 71.7 gr | 80% | 36,405 psi | 56% | 2621 fps | 96.7% |
| Norma URP | <<locked>> | 80% | 45,818 psi | 70% | 2736 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 40,582 psi | 62% | 2710 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 44,527 psi | 69% | 2730 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 86% | 36,361 psi | 56% | 2589 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,471 psi | 44% | 1667 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,659 psi | 72% | 2769 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,817 psi | 69% | 2785 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 33,852 psi | 52% | 2598 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 43,685 psi | 67% | 2815 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 53,780 psi | 83% | 2808 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 40,205 psi | 62% | 2598 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 80% | 38,319 psi | 59% | 2602 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 49,182 psi | 76% | 2749 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,153 psi | 74% | 2726 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 46,572 psi | 72% | 2717 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 54,955 psi | 85% | 2864 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,563 psi | 82% | 2687 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,195 psi | 73% | 2674 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,985 psi | 58% | 2595 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 53,345 psi | 82% | 2802 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 43,729 psi | 67% | 2644 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 42,743 psi | 66% | 2690 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,943 psi | 60% | 2585 fps | 97% |
| Vihtavuori N150 | <<locked>> | 80% | 51,198 psi | 79% | 2726 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,137 psi | 73% | 2730 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 35,955 psi | 55% | 2510 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 46,543 psi | 72% | 2733 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,652 psi | 58% | 2598 fps | 99.5% |
| Vihtavuori N560 | 75.3 gr | 84% | 42,076 psi | 65% | 2733 fps | 95% |
| Vihtavuori N565 | <<locked>> | 90% | 42,206 psi | 65% | 2726 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 98% | 48,457 psi | 75% | 2897 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,209 psi | 71% | 2687 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,486 psi | 75% | 2799 fps | 99.4% |
| Winchester StaBALL HD | 70.9 gr | 80% | 29,747 psi | 46% | 2533 fps | 99.7% |
| Winchester Supreme 780 | <<locked>> | 82% | 37,971 psi | 58% | 2562 fps | 95.6% |
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 80 powders for .300 PRC loaded with the .308 | 185gr | Berger JUG. Hodgdon Retumbo delivers the highest muzzle velocity at 3,074 fps; across all powders the maximum-charge window runs from 1,818 fps to 3,074 fps. ADI AR 2217 gives the best case fill at 100 %, and 80 of the 80 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 185.0 gr projectile in 0.308" calls for a 1:12.0 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. Winchester StaBALL HD, Vihtavuori N560, Norma MRP rank at the top here: for .300 PRC with the .308 | 185gr | Berger JUG they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, 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.