Load Specifications
Load data in caliber .300 PRC with .308 | 168gr | Speer MHP BTHP M bullet and 78 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and ADI AR 2213.
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% | 55,767 psi | 86% | 3005 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 57,145 psi | 88% | 3048 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 58,131 psi | 89% | 3156 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 84% | 58,320 psi | 90% | 3005 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 58,015 psi | 89% | 3100 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 96% | 55,709 psi | 86% | 3097 fps | 97.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,408 psi | 64% | 2864 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,231 psi | 87% | 2982 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 57,841 psi | 89% | 3104 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,347 psi | 85% | 3064 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 57,348 psi | 88% | 3084 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,521 psi | 85% | 3094 fps | 98.9% |
| Alliant Reloder-23 | <<locked>> | 98% | 56,565 psi | 87% | 3074 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,228 psi | 80% | 3068 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 57,246 psi | 88% | 3166 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 58,131 psi | 89% | 3133 fps | 99.1% |
| Bofors RP3 | <<locked>> | 82% | 57,246 psi | 88% | 2999 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,037 psi | 74% | 2986 fps | 96.9% |
| Bofors RP5 | <<locked>> | 96% | 55,521 psi | 85% | 3094 fps | 98.9% |
| Bofors RP7 | <<locked>> | 86% | 56,159 psi | 86% | 2989 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,387 psi | 79% | 3012 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 82% | 57,334 psi | 88% | 3018 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 55,361 psi | 85% | 3045 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 58,030 psi | 89% | 3054 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 94% | 55,840 psi | 86% | 3038 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 58,465 psi | 90% | 3081 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 58,276 psi | 90% | 3022 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,068 psi | 79% | 3123 fps | 99% |
| Hodgdon Superformance | <<locked>> | 86% | 55,666 psi | 86% | 3077 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,898 psi | 57% | 1906 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 57,943 psi | 89% | 2992 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 57,798 psi | 89% | 3031 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 57,667 psi | 89% | 3015 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 57,580 psi | 89% | 3038 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,869 psi | 87% | 3022 fps | 97.6% |
| IMR 7828 SSC | <<locked>> | 98% | 57,246 psi | 88% | 3136 fps | 98.2% |
| Lovex S062 | <<locked>> | 82% | 58,276 psi | 90% | 2982 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 58,262 psi | 90% | 3015 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 56,304 psi | 87% | 3005 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,997 psi | 82% | 2963 fps | 99.8% |
| Norma 204 | <<locked>> | 88% | 54,969 psi | 85% | 3025 fps | 98.5% |
| Norma MRP | <<locked>> | 94% | 55,303 psi | 85% | 3117 fps | 99.6% |
| Norma URP | <<locked>> | 88% | 55,593 psi | 86% | 3028 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 58,175 psi | 89% | 3159 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 90% | 58,131 psi | 89% | 3087 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 56,202 psi | 86% | 3084 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,739 psi | 58% | 1952 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,985 psi | 88% | 3002 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,795 psi | 84% | 3051 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 57,276 psi | 88% | 3071 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 55,434 psi | 85% | 3097 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,605 psi | 79% | 3120 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 84% | 57,537 psi | 89% | 2999 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,666 psi | 86% | 3009 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 94% | 56,855 psi | 87% | 3074 fps | 99% |
| Rottweil R 907 | <<locked>> | 86% | 56,159 psi | 86% | 2989 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 58,262 psi | 90% | 3015 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 58,276 psi | 90% | 2982 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 56,304 psi | 87% | 3005 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,405 psi | 85% | 3002 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 57,450 psi | 88% | 2867 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 57,696 psi | 89% | 2966 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 56,405 psi | 87% | 3068 fps | 99% |
| Somchem S355 | <<locked>> | 84% | 57,116 psi | 88% | 2989 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 57,377 psi | 88% | 3002 fps | 97.5% |
| Somchem S365 | <<locked>> | 90% | 55,898 psi | 86% | 3035 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 57,406 psi | 88% | 3045 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 86% | 58,450 psi | 90% | 2959 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 57,406 psi | 88% | 3022 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 56,956 psi | 88% | 3022 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 88% | 56,681 psi | 87% | 3025 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 55,317 psi | 85% | 3048 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 55,245 psi | 85% | 3107 fps | 97.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,853 psi | 84% | 3081 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 57,087 psi | 88% | 2979 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,361 psi | 85% | 3045 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 58,001 psi | 89% | 3212 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 57,653 psi | 89% | 3045 fps | 99% |
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% | 32,314 psi | 50% | 2533 fps | 95.1% |
| Accurate 4350 | <<locked>> | 80% | 43,526 psi | 67% | 2812 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 92% | 50,430 psi | 78% | 3022 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 51,677 psi | 80% | 2904 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 41,655 psi | 64% | 2792 fps | 95.6% |
| ADI AR 2213 | 78.8 gr | 90% | 45,411 psi | 70% | 2900 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 96% | 36,332 psi | 56% | 2733 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,779 psi | 81% | 2927 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,727 psi | 64% | 2818 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,080 psi | 74% | 2943 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 41,568 psi | 64% | 2785 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 86% | 39,523 psi | 61% | 2779 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,009 psi | 48% | 2562 fps | 98.3% |
| Alliant Reloder-25 | <<locked>> | 84% | 30,937 psi | 48% | 2575 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 80% | 33,663 psi | 52% | 2690 fps | 97.2% |
| Bofors RP15 | <<locked>> | 90% | 41,829 psi | 64% | 2828 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 53,679 psi | 83% | 2946 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 42,003 psi | 65% | 2864 fps | 95.1% |
| Bofors RP5 | <<locked>> | 86% | 39,523 psi | 61% | 2779 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 46,528 psi | 72% | 2818 fps | 98% |
| Hodgdon H1000 | <<locked>> | 94% | 41,742 psi | 64% | 2812 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 53,650 psi | 83% | 2959 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 45,208 psi | 70% | 2858 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 80% | 47,906 psi | 74% | 2881 fps | 97.7% |
| Hodgdon H4831 | <<locked>> | 90% | 48,588 psi | 75% | 2910 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 47,630 psi | 73% | 2890 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,421 psi | 61% | 2703 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 39,117 psi | 60% | 2848 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 44,643 psi | 69% | 2881 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,673 psi | 43% | 1706 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 54,389 psi | 84% | 2936 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,003 psi | 65% | 2740 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,964 psi | 74% | 2848 fps | 98.6% |
| IMR 4831 | <<locked>> | 80% | 41,568 psi | 64% | 2756 fps | 99.3% |
| IMR 4955 Enduron | <<locked>> | 88% | 47,065 psi | 72% | 2844 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 92% | 46,717 psi | 72% | 2940 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 54,723 psi | 84% | 2930 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 45,498 psi | 70% | 2795 fps | 99.1% |
| Lovex S070 | <<locked>> | 80% | 43,859 psi | 67% | 2779 fps | 98.1% |
| Lovex S071 | <<locked>> | 86% | 33,881 psi | 52% | 2575 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 41,945 psi | 65% | 2776 fps | 95.5% |
| Norma MRP | 74.1 gr | 82% | 36,027 psi | 55% | 2720 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 42,873 psi | 66% | 2799 fps | 99.4% |
| Ramshot Grand | <<locked>> | 90% | 43,439 psi | 67% | 2884 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 41,713 psi | 64% | 2789 fps | 98.1% |
| Ramshot Magnum | <<locked>> | 90% | 38,754 psi | 60% | 2753 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,181 psi | 43% | 1745 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,417 psi | 82% | 2946 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,995 psi | 78% | 2995 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,366 psi | 67% | 2828 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,640 psi | 64% | 2838 fps | 99.1% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 36,013 psi | 55% | 2759 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 50,589 psi | 78% | 2890 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 45,992 psi | 71% | 2831 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 84% | 40,756 psi | 63% | 2769 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 46,528 psi | 72% | 2818 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,498 psi | 70% | 2795 fps | 99.1% |
| Shooters World Precision | <<locked>> | 80% | 54,723 psi | 84% | 2930 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 43,859 psi | 67% | 2779 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,851 psi | 80% | 2946 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,720 psi | 78% | 2772 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,614 psi | 69% | 2740 fps | 98.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 40,393 psi | 62% | 2762 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 50,386 psi | 78% | 2884 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 47,050 psi | 72% | 2818 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 39,552 psi | 61% | 2753 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 38,725 psi | 60% | 2690 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 48,312 psi | 74% | 2808 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,222 psi | 68% | 2799 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 38,261 psi | 59% | 2674 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 43,627 psi | 67% | 2799 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 80% | 34,809 psi | 54% | 2648 fps | 98.3% |
| Vihtavuori N560 | 81.4 gr | 90% | 48,080 psi | 74% | 2976 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 94% | 44,701 psi | 69% | 2890 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,308 psi | 67% | 2759 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,353 psi | 70% | 2861 fps | 98.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,543 psi | 42% | 2552 fps | 97.9% |
| Winchester Supreme 780 | <<locked>> | 86% | 40,683 psi | 63% | 2733 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 85 powders for .300 PRC loaded with the .308 | 168gr | Speer MHP BTHP M. Winchester StaBALL HD delivers the highest muzzle velocity at 3,212 fps; across all powders the maximum-charge window runs from 1,906 fps to 3,212 fps. ADI AR 2217 gives the best case fill at 100 %, and 85 of the 85 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. 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. Norma MRP, Vihtavuori N560, ADI AR 2213 rank at the top here: for .300 PRC with the .308 | 168gr | Speer MHP BTHP M they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 8133 Enduron, ReloadSwiss RS 80, 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.