Load Specifications
Load data in caliber .300 PRC with .308 | 180gr | Speer Boat-Tail bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Alliant Reloder-26 and Winchester StaBALL HD.
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% | 57,957 psi | 89% | 2946 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 55,637 psi | 86% | 2927 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 56,608 psi | 87% | 3041 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 82% | 56,579 psi | 87% | 2887 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 56,376 psi | 87% | 2982 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 96% | 57,870 psi | 89% | 3045 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,472 psi | 75% | 2874 fps | 97.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,163 psi | 66% | 2831 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 57,957 psi | 89% | 2910 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 56,347 psi | 87% | 2982 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 57,740 psi | 89% | 2999 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 55,840 psi | 86% | 2969 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 57,783 psi | 89% | 3038 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 55,100 psi | 85% | 2953 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,534 psi | 84% | 3015 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 55,593 psi | 86% | 3045 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 56,637 psi | 87% | 3022 fps | 99.3% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,401 psi | 78% | 2946 fps | 98.1% |
| Bofors RP5 | <<locked>> | 96% | 57,783 psi | 89% | 3038 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 57,972 psi | 89% | 2927 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,534 psi | 82% | 2969 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 86% | 57,290 psi | 88% | 2982 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 56,405 psi | 87% | 2940 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 94% | 57,827 psi | 89% | 2982 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 56,695 psi | 87% | 2966 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 56,739 psi | 87% | 2907 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,374 psi | 82% | 3077 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 86% | 58,030 psi | 89% | 3025 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,115 psi | 57% | 1841 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,043 psi | 86% | 2913 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,883 psi | 86% | 2897 fps | 99.8% |
| IMR 4831 | <<locked>> | 88% | 55,927 psi | 86% | 2920 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 58,813 psi | 90% | 2966 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 96% | 55,680 psi | 86% | 3022 fps | 98.5% |
| Lovex S065 | <<locked>> | 86% | 56,550 psi | 87% | 2897 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 58,305 psi | 90% | 2946 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 55,259 psi | 85% | 2907 fps | 100% |
| Norma 204 | <<locked>> | 88% | 57,203 psi | 88% | 2972 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 38,696 psi | 60% | 2749 fps | 97% |
| Norma MRP | <<locked>> | 94% | 57,754 psi | 89% | 3064 fps | 100% |
| Norma URP | <<locked>> | 88% | 57,696 psi | 89% | 2966 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 56,434 psi | 87% | 3045 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 56,608 psi | 87% | 2972 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 54,708 psi | 84% | 2976 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,840 psi | 58% | 1883 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 57,246 psi | 88% | 2986 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,622 psi | 86% | 2953 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 57,841 psi | 89% | 3035 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,012 psi | 83% | 3077 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 48,994 psi | 75% | 2953 fps | 96.3% |
| Rottweil R 903 | <<locked>> | 82% | 55,767 psi | 86% | 2877 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 57,609 psi | 89% | 2953 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 92% | 55,361 psi | 85% | 2959 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 86% | 57,972 psi | 89% | 2927 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,550 psi | 87% | 2897 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 58,305 psi | 90% | 2946 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 57,348 psi | 88% | 2936 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,724 psi | 86% | 2749 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,956 psi | 86% | 2851 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 58,668 psi | 90% | 3012 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 55,535 psi | 85% | 2871 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 55,535 psi | 85% | 2887 fps | 97.8% |
| Somchem S365 | <<locked>> | 90% | 58,146 psi | 89% | 2966 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,985 psi | 86% | 2933 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 84% | 56,666 psi | 87% | 2841 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,883 psi | 86% | 2904 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 55,347 psi | 85% | 2910 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 88% | 58,595 psi | 90% | 2959 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 57,653 psi | 89% | 2986 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 57,522 psi | 88% | 3054 fps | 98.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 57,363 psi | 88% | 3035 fps | 98.6% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 55,361 psi | 85% | 2861 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 57,508 psi | 88% | 2986 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 56,855 psi | 87% | 3097 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,970 psi | 86% | 2930 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% | 33,823 psi | 52% | 2497 fps | 96.6% |
| Accurate 4350 | <<locked>> | 80% | 45,397 psi | 70% | 2759 fps | 99.9% |
| Accurate MAGPRO | 79.8 gr | 88% | 45,730 psi | 70% | 2844 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 53,301 psi | 82% | 2838 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 37,826 psi | 58% | 2621 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 88% | 44,135 psi | 68% | 2792 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 96% | 42,366 psi | 65% | 2749 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 92% | 33,301 psi | 51% | 2579 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 54,592 psi | 84% | 2861 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,410 psi | 67% | 2762 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,096 psi | 77% | 2884 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,884 psi | 58% | 2618 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 84% | 38,667 psi | 59% | 2677 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,445 psi | 50% | 2523 fps | 99.2% |
| Alliant Reloder-25 | <<locked>> | 82% | 30,197 psi | 46% | 2480 fps | 95.6% |
| Alliant Reloder-26 | 73.4 gr | 80% | 35,389 psi | 54% | 2661 fps | 98.5% |
| Bofors RP15 | <<locked>> | 86% | 38,290 psi | 59% | 2667 fps | 95.3% |
| Bofors RP30 | <<locked>> | 94% | 41,089 psi | 63% | 2762 fps | 95.6% |
| Bofors RP5 | <<locked>> | 84% | 38,667 psi | 59% | 2677 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 48,051 psi | 74% | 2759 fps | 98.8% |
| Hodgdon H1000 | <<locked>> | 92% | 40,669 psi | 63% | 2713 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 47,065 psi | 72% | 2808 fps | 99% |
| Hodgdon H4350 | <<locked>> | 80% | 49,501 psi | 76% | 2822 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 86% | 44,179 psi | 68% | 2740 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 88% | 46,282 psi | 71% | 2782 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,901 psi | 63% | 2648 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 38,247 psi | 59% | 2749 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 46,470 psi | 71% | 2828 fps | 98.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,731 psi | 43% | 1644 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,540 psi | 67% | 2690 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,501 psi | 76% | 2789 fps | 99.2% |
| IMR 4831 | <<locked>> | 80% | 43,120 psi | 66% | 2703 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 84% | 42,975 psi | 66% | 2680 fps | 95% |
| IMR 7828 SSC | <<locked>> | 88% | 42,380 psi | 65% | 2769 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 47,021 psi | 72% | 2736 fps | 99.6% |
| Lovex S070 | <<locked>> | 80% | 45,281 psi | 70% | 2723 fps | 98.8% |
| Lovex S071 | <<locked>> | 82% | 31,111 psi | 48% | 2425 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 43,511 psi | 67% | 2726 fps | 96.8% |
| Norma 217 | <<locked>> | 98% | 36,303 psi | 56% | 2690 fps | 96% |
| Norma MRP | <<locked>> | 80% | 35,114 psi | 54% | 2621 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 44,440 psi | 68% | 2743 fps | 99.8% |
| Ramshot Grand | <<locked>> | 88% | 42,206 psi | 65% | 2776 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 43,337 psi | 67% | 2740 fps | 99% |
| Ramshot Magnum | <<locked>> | 86% | 35,128 psi | 54% | 2589 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,427 psi | 44% | 1686 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 53,214 psi | 82% | 2930 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,179 psi | 70% | 2776 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,410 psi | 67% | 2792 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 35,056 psi | 54% | 2661 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 45,339 psi | 70% | 2881 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 52,272 psi | 80% | 2825 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 41,858 psi | 64% | 2664 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 37,217 psi | 57% | 2605 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 48,051 psi | 74% | 2759 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,021 psi | 72% | 2736 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 80% | 45,281 psi | 70% | 2723 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,650 psi | 83% | 2881 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,446 psi | 81% | 2703 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,963 psi | 71% | 2684 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,883 psi | 57% | 2598 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 52,141 psi | 80% | 2818 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 45,600 psi | 70% | 2713 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 41,423 psi | 64% | 2700 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,739 psi | 58% | 2589 fps | 96.3% |
| Vihtavuori N150 | <<locked>> | 80% | 49,835 psi | 77% | 2743 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,963 psi | 71% | 2743 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 37,318 psi | 57% | 2572 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 45,353 psi | 70% | 2746 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 36,347 psi | 56% | 2602 fps | 99.2% |
| Vihtavuori N560 | <<locked>> | 86% | 43,656 psi | 67% | 2802 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 92% | 43,555 psi | 67% | 2785 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,020 psi | 69% | 2703 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,065 psi | 72% | 2808 fps | 99% |
| Winchester StaBALL HD | 70.5 gr | 80% | 28,790 psi | 44% | 2530 fps | 99.3% |
| Winchester Supreme 780 | <<locked>> | 84% | 39,479 psi | 61% | 2628 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 82 powders for .300 PRC loaded with the .308 | 180gr | Speer Boat-Tail. 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 1:13.0 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. Accurate MAGPRO, Alliant Reloder-26, Winchester StaBALL HD rank at the top here: for .300 PRC with the .308 | 180gr | Speer Boat-Tail 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.