Load Specifications
Load data in caliber .300 PRC with .308 | 185gr | Reichenberg HDB Universal bullet and 77 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, IMR 7828 SSC 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.
A valid access license is required to use the Personalized Load Calculator.
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% | 58,653 psi | 90% | 2927 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 56,231 psi | 87% | 2907 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 57,580 psi | 89% | 3028 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 82% | 57,188 psi | 88% | 2864 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,246 psi | 88% | 2966 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 55,085 psi | 85% | 2972 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,168 psi | 76% | 2864 fps | 97.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,700 psi | 67% | 2818 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 58,523 psi | 90% | 2887 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 57,392 psi | 88% | 2963 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 58,711 psi | 90% | 2979 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,623 psi | 87% | 2953 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 58,769 psi | 90% | 3025 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,173 psi | 86% | 2936 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,579 psi | 86% | 2999 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 56,710 psi | 87% | 3028 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 56,753 psi | 87% | 2930 fps | 96.4% |
| Bofors RP15 | <<locked>> | 98% | 57,638 psi | 89% | 3005 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,503 psi | 79% | 2936 fps | 98.5% |
| Bofors RP5 | <<locked>> | 96% | 58,769 psi | 90% | 3025 fps | 99.7% |
| Bofors RP7 | <<locked>> | 86% | 58,610 psi | 90% | 2910 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,389 psi | 84% | 2956 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 86% | 58,117 psi | 89% | 2966 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 57,000 psi | 88% | 2920 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 54,824 psi | 84% | 2907 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 94% | 57,711 psi | 89% | 2953 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,595 psi | 89% | 2884 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,360 psi | 84% | 3068 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 54,694 psi | 84% | 2940 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,956 psi | 57% | 1821 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,826 psi | 87% | 2897 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,652 psi | 87% | 2881 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 56,594 psi | 87% | 2900 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,912 psi | 86% | 2890 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 96% | 56,753 psi | 87% | 3009 fps | 98.9% |
| Lovex S065 | <<locked>> | 86% | 56,971 psi | 88% | 2874 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 55,317 psi | 85% | 2871 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 55,941 psi | 86% | 2890 fps | 100% |
| Norma 204 | <<locked>> | 88% | 57,957 psi | 89% | 2953 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 39,320 psi | 60% | 2740 fps | 97.6% |
| Norma MRP | <<locked>> | 94% | 58,813 psi | 90% | 3045 fps | 100% |
| Norma URP | <<locked>> | 88% | 58,494 psi | 90% | 2946 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 57,609 psi | 89% | 3031 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 88% | 57,406 psi | 88% | 2953 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,753 psi | 86% | 2963 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,811 psi | 58% | 1867 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 58,349 psi | 90% | 2966 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,318 psi | 87% | 2930 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,766 psi | 84% | 2959 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 55,114 psi | 85% | 3064 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,922 psi | 77% | 2940 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 82% | 56,159 psi | 86% | 2851 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 58,363 psi | 90% | 2936 fps | 99% |
| Rottweil R 905 | <<locked>> | 92% | 56,086 psi | 86% | 2940 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 86% | 58,610 psi | 90% | 2910 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,971 psi | 88% | 2874 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 55,317 psi | 85% | 2871 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 57,957 psi | 89% | 2913 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,057 psi | 86% | 2723 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,289 psi | 87% | 2831 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,666 psi | 86% | 2940 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 55,985 psi | 86% | 2848 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,289 psi | 87% | 2874 fps | 98.2% |
| Somchem S365 | <<locked>> | 88% | 55,216 psi | 85% | 2894 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 56,565 psi | 87% | 2913 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 57,130 psi | 88% | 2818 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,623 psi | 87% | 2884 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,231 psi | 87% | 2897 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 55,695 psi | 86% | 2887 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 58,291 psi | 90% | 2963 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 58,566 psi | 90% | 3041 fps | 98.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 58,218 psi | 90% | 3018 fps | 98.9% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 51,155 psi | 79% | 2949 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,130 psi | 86% | 2841 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 58,334 psi | 90% | 2969 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 58,291 psi | 90% | 3074 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 56,637 psi | 87% | 2913 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% | 33,765 psi | 52% | 2470 fps | 96.9% |
| Accurate 4350 | <<locked>> | 80% | 45,658 psi | 70% | 2736 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 46,441 psi | 71% | 2831 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 53,722 psi | 83% | 2815 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,145 psi | 59% | 2608 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 86% | 41,756 psi | 64% | 2717 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 94% | 40,118 psi | 62% | 2674 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 92% | 33,533 psi | 52% | 2566 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 54,926 psi | 85% | 2835 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,990 psi | 68% | 2746 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,952 psi | 78% | 2864 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,189 psi | 59% | 2602 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 82% | 36,376 psi | 56% | 2598 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,605 psi | 50% | 2503 fps | 99.4% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,297 psi | 44% | 2402 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,737 psi | 55% | 2641 fps | 98.8% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 53,345 psi | 82% | 2871 fps | 95.6% |
| Bofors RP15 | <<locked>> | 86% | 38,740 psi | 60% | 2651 fps | 95.8% |
| Bofors RP30 | <<locked>> | 92% | 38,783 psi | 60% | 2684 fps | 95.2% |
| Bofors RP5 | <<locked>> | 82% | 36,376 psi | 56% | 2598 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 48,414 psi | 74% | 2743 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 38,363 psi | 59% | 2638 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 47,500 psi | 73% | 2789 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 50,024 psi | 77% | 2805 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 86% | 44,744 psi | 69% | 2726 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 86% | 43,859 psi | 67% | 2707 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,307 psi | 64% | 2628 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 36,129 psi | 56% | 2671 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 47,152 psi | 73% | 2812 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,673 psi | 43% | 1627 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,932 psi | 68% | 2674 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,806 psi | 77% | 2769 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 43,395 psi | 67% | 2680 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 43,294 psi | 67% | 2664 fps | 95.5% |
| IMR 7828 SSC | 74.7 gr | 86% | 40,103 psi | 62% | 2694 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 47,340 psi | 73% | 2717 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 45,571 psi | 70% | 2703 fps | 99.1% |
| Lovex S071 | <<locked>> | 82% | 30,850 psi | 47% | 2398 fps | 95.7% |
| Norma 204 | <<locked>> | 80% | 43,903 psi | 68% | 2710 fps | 97.2% |
| Norma 217 | <<locked>> | 96% | 34,127 psi | 53% | 2608 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 35,476 psi | 55% | 2602 fps | 96.3% |
| Norma URP | <<locked>> | 80% | 44,831 psi | 69% | 2723 fps | 99.9% |
| Ramshot Grand | <<locked>> | 86% | 39,697 psi | 61% | 2697 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 43,714 psi | 67% | 2720 fps | 99.2% |
| Ramshot Magnum | <<locked>> | 86% | 35,375 psi | 54% | 2572 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,340 psi | 44% | 1670 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 54,288 psi | 84% | 2907 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,701 psi | 70% | 2756 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,034 psi | 68% | 2776 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 32,851 psi | 51% | 2575 fps | 95.2% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 46,122 psi | 71% | 2871 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 52,605 psi | 81% | 2799 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 42,206 psi | 65% | 2648 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 80% | 37,318 psi | 57% | 2582 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 48,414 psi | 74% | 2743 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,340 psi | 73% | 2717 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 45,571 psi | 70% | 2703 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 54,215 psi | 83% | 2861 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,779 psi | 81% | 2680 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,224 psi | 71% | 2664 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,999 psi | 57% | 2579 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 52,547 psi | 81% | 2795 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 42,902 psi | 66% | 2635 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 41,843 psi | 64% | 2680 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,855 psi | 58% | 2569 fps | 96.7% |
| Vihtavuori N150 | <<locked>> | 80% | 50,227 psi | 77% | 2720 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,383 psi | 71% | 2723 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 35,114 psi | 54% | 2500 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 45,658 psi | 70% | 2723 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 36,477 psi | 56% | 2575 fps | 99.4% |
| Vihtavuori N560 | 77.6 gr | 86% | 44,237 psi | 68% | 2785 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 90% | 41,104 psi | 63% | 2707 fps | 95.1% |
| Vihtavuori N568 | <<locked>> | 98% | 47,558 psi | 73% | 2884 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,411 psi | 70% | 2680 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,688 psi | 73% | 2792 fps | 99.3% |
| Winchester StaBALL HD | 71.4 gr | 80% | 28,776 psi | 44% | 2507 fps | 99.5% |
| Winchester Supreme 780 | <<locked>> | 82% | 37,115 psi | 57% | 2552 fps | 95.4% |
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 82 powders for .300 PRC loaded with the .308 | 185gr | Reichenberg HDB Universal. Winchester StaBALL HD delivers the highest muzzle velocity at 3,074 fps; across all powders the maximum-charge window runs from 1,821 fps to 3,074 fps. ADI AR 2217 gives the best case fill at 100 %, and 82 of the 82 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 1:11.5 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. Winchester StaBALL HD, IMR 7828 SSC, Vihtavuori N560 rank at the top here: for .300 PRC with the .308 | 185gr | Reichenberg HDB Universal 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.