Load Specifications
Load data in caliber .300 PRC with .308 | 180gr | Frontier PH HPFB bullet and 77 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Winchester StaBALL HD and IMR 7828 SSC.
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% | 58,537 psi | 90% | 2956 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 56,072 psi | 86% | 2936 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 56,971 psi | 88% | 3048 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 82% | 57,029 psi | 88% | 2890 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 56,811 psi | 87% | 2989 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 96% | 58,421 psi | 90% | 3054 fps | 98.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,936 psi | 75% | 2884 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,613 psi | 67% | 2838 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 58,421 psi | 90% | 2917 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 56,811 psi | 87% | 2989 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 58,189 psi | 90% | 3005 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,188 psi | 86% | 2976 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 58,334 psi | 90% | 3048 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 55,753 psi | 86% | 2963 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,853 psi | 84% | 3018 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 56,246 psi | 87% | 3051 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 56,275 psi | 87% | 2946 fps | 95.8% |
| Bofors RP15 | <<locked>> | 98% | 57,246 psi | 88% | 3028 fps | 99.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,966 psi | 78% | 2953 fps | 98.2% |
| Bofors RP5 | <<locked>> | 96% | 58,334 psi | 90% | 3048 fps | 99.6% |
| Bofors RP7 | <<locked>> | 86% | 58,334 psi | 90% | 2933 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,795 psi | 83% | 2972 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 86% | 57,696 psi | 89% | 2989 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 56,594 psi | 87% | 2943 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 94% | 58,363 psi | 90% | 2989 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 57,029 psi | 88% | 2969 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,174 psi | 88% | 2913 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,896 psi | 83% | 3087 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 86% | 58,407 psi | 90% | 3028 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,985 psi | 57% | 1841 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,420 psi | 87% | 2920 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,275 psi | 87% | 2904 fps | 99.8% |
| IMR 4831 | <<locked>> | 88% | 56,318 psi | 87% | 2927 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,564 psi | 85% | 2913 fps | 98% |
| IMR 7828 SSC | <<locked>> | 96% | 56,043 psi | 86% | 3025 fps | 98.6% |
| Lovex S065 | <<locked>> | 86% | 56,942 psi | 88% | 2904 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 58,639 psi | 90% | 2953 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 55,651 psi | 86% | 2913 fps | 100% |
| Norma 204 | <<locked>> | 88% | 57,566 psi | 89% | 2979 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 39,146 psi | 60% | 2759 fps | 97.2% |
| Norma MRP | <<locked>> | 94% | 58,349 psi | 90% | 3071 fps | 100% |
| Norma URP | <<locked>> | 88% | 58,117 psi | 89% | 2969 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 56,840 psi | 87% | 3048 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 57,014 psi | 88% | 2976 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,056 psi | 85% | 2979 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,884 psi | 58% | 1886 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 57,754 psi | 89% | 2989 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,028 psi | 86% | 2956 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 58,233 psi | 90% | 3041 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,520 psi | 84% | 3084 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,472 psi | 76% | 2959 fps | 96.4% |
| Rottweil R 903 | <<locked>> | 82% | 56,231 psi | 87% | 2884 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 57,957 psi | 89% | 2956 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 92% | 55,738 psi | 86% | 2963 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 86% | 58,334 psi | 90% | 2933 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,942 psi | 88% | 2904 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 58,639 psi | 90% | 2953 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 57,580 psi | 89% | 2940 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,941 psi | 86% | 2753 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,130 psi | 86% | 2854 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,303 psi | 85% | 2959 fps | 99.3% |
| Somchem S355 | <<locked>> | 82% | 55,767 psi | 86% | 2874 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,028 psi | 86% | 2894 fps | 97.9% |
| Somchem S365 | <<locked>> | 90% | 58,581 psi | 90% | 2972 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 56,318 psi | 87% | 2940 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 84% | 57,058 psi | 88% | 2848 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,260 psi | 87% | 2907 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 55,912 psi | 86% | 2917 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 86% | 55,463 psi | 85% | 2913 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 58,088 psi | 89% | 2992 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 58,117 psi | 89% | 3064 fps | 98.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 57,696 psi | 89% | 3041 fps | 98.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 50,633 psi | 78% | 2966 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 55,724 psi | 86% | 2864 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 57,914 psi | 89% | 2992 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 57,305 psi | 88% | 3097 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 56,260 psi | 87% | 2933 fps | 99.2% |
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% | 45,658 psi | 70% | 2762 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 88% | 46,253 psi | 71% | 2854 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 53,548 psi | 82% | 2841 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,000 psi | 58% | 2628 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 88% | 44,440 psi | 68% | 2799 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 96% | 42,801 psi | 66% | 2759 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 92% | 33,663 psi | 52% | 2589 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 54,839 psi | 84% | 2864 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,656 psi | 67% | 2766 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,575 psi | 78% | 2890 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,087 psi | 59% | 2625 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 84% | 38,856 psi | 60% | 2680 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,634 psi | 50% | 2530 fps | 99.3% |
| Alliant Reloder-25 | <<locked>> | 82% | 30,472 psi | 47% | 2490 fps | 95.8% |
| Alliant Reloder-26 | 73.9 gr | 80% | 35,708 psi | 55% | 2664 fps | 98.6% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 52,924 psi | 81% | 2890 fps | 95% |
| Bofors RP15 | <<locked>> | 86% | 38,653 psi | 59% | 2674 fps | 95.4% |
| Bofors RP30 | <<locked>> | 94% | 41,423 psi | 64% | 2769 fps | 95.7% |
| Bofors RP5 | <<locked>> | 84% | 38,856 psi | 60% | 2680 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 48,472 psi | 75% | 2769 fps | 98.9% |
| 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% | 44,527 psi | 69% | 2746 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 88% | 46,630 psi | 72% | 2789 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,292 psi | 64% | 2651 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 36,158 psi | 56% | 2694 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 46,847 psi | 72% | 2835 fps | 98.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,833 psi | 43% | 1647 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,772 psi | 67% | 2697 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,719 psi | 76% | 2792 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 43,497 psi | 67% | 2710 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 84% | 43,279 psi | 67% | 2687 fps | 95.1% |
| IMR 7828 SSC | 75.9 gr | 88% | 42,714 psi | 66% | 2776 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 47,253 psi | 73% | 2743 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 45,687 psi | 70% | 2730 fps | 98.9% |
| Lovex S071 | <<locked>> | 82% | 31,314 psi | 48% | 2428 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 43,888 psi | 68% | 2733 fps | 96.9% |
| Norma 217 | <<locked>> | 96% | 34,258 psi | 53% | 2635 fps | 95% |
| Norma MRP | <<locked>> | 80% | 35,447 psi | 55% | 2625 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 44,817 psi | 69% | 2749 fps | 99.9% |
| Ramshot Grand | <<locked>> | 88% | 42,540 psi | 65% | 2782 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 43,714 psi | 67% | 2746 fps | 99% |
| Ramshot Magnum | <<locked>> | 86% | 35,404 psi | 54% | 2595 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,384 psi | 44% | 1686 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 53,722 psi | 83% | 2936 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,556 psi | 70% | 2782 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,772 psi | 67% | 2799 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 35,331 psi | 54% | 2667 fps | 96.1% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 45,803 psi | 70% | 2887 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 52,707 psi | 81% | 2828 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 42,032 psi | 65% | 2667 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 37,405 psi | 58% | 2608 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 48,472 psi | 75% | 2769 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,253 psi | 73% | 2743 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 45,687 psi | 70% | 2730 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 54,070 psi | 83% | 2887 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,649 psi | 81% | 2707 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,340 psi | 71% | 2690 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,086 psi | 57% | 2602 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 52,388 psi | 81% | 2822 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 45,905 psi | 71% | 2717 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 41,713 psi | 64% | 2707 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,058 psi | 59% | 2595 fps | 96.4% |
| Vihtavuori N150 | <<locked>> | 80% | 50,241 psi | 77% | 2749 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,180 psi | 71% | 2746 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 37,666 psi | 58% | 2582 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 80% | 45,571 psi | 70% | 2746 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 36,724 psi | 56% | 2608 fps | 99.2% |
| Vihtavuori N560 | <<locked>> | 86% | 44,005 psi | 68% | 2808 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 92% | 44,048 psi | 68% | 2795 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 98% | 47,166 psi | 73% | 2900 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,194 psi | 70% | 2703 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,442 psi | 73% | 2815 fps | 99.1% |
| Winchester StaBALL HD | 71 gr | 80% | 29,080 psi | 45% | 2536 fps | 99.3% |
| Winchester Supreme 780 | <<locked>> | 84% | 39,827 psi | 61% | 2635 fps | 95.9% |
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 | 180gr | Frontier PH HPFB. Winchester StaBALL HD delivers the highest muzzle velocity at 3,097 fps; across all powders the maximum-charge window runs from 1,841 fps to 3,097 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 180.0 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. Alliant Reloder-26, Winchester StaBALL HD, IMR 7828 SSC rank at the top here: for .300 PRC with the .308 | 180gr | Frontier PH HPFB they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 Enduron, IMR 8133 Enduron 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.