Load Specifications
Load data in caliber .300 PRC with .308 | 165gr | Frontier BTSP bullet and 83 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP 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.
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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 2700 | <<locked>> | 82% | 57,986 psi | 89% | 3005 fps | 99.3% |
| Accurate 3100 | <<locked>> | 98% | 58,088 psi | 89% | 3064 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 57,928 psi | 89% | 2982 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 55,811 psi | 86% | 3051 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 56,652 psi | 87% | 3153 fps | 96.8% |
| ADI AR 2208 | <<locked>> | 84% | 57,479 psi | 88% | 3018 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,623 psi | 87% | 3100 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 98% | 58,117 psi | 89% | 3159 fps | 98.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,321 psi | 62% | 2858 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 58,624 psi | 90% | 3041 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 58,798 psi | 90% | 3068 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,550 psi | 87% | 3110 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 57,986 psi | 89% | 3127 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 56,217 psi | 86% | 3091 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 98% | 57,754 psi | 89% | 3153 fps | 99% |
| Alliant Reloder-23 | <<locked>> | 98% | 55,042 psi | 85% | 3077 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,865 psi | 78% | 3071 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 55,288 psi | 85% | 3163 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 56,666 psi | 87% | 3133 fps | 98.8% |
| Bofors RP3 | <<locked>> | 82% | 56,028 psi | 86% | 3005 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,644 psi | 72% | 2982 fps | 96.3% |
| Bofors RP5 | <<locked>> | 98% | 57,754 psi | 89% | 3153 fps | 99% |
| Bofors RP7 | <<locked>> | 88% | 58,682 psi | 90% | 3051 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,154 psi | 77% | 3009 fps | 97.3% |
| Hodgdon H380 | <<locked>> | 82% | 56,231 psi | 87% | 3025 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 57,783 psi | 89% | 3107 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 86% | 56,913 psi | 88% | 3061 fps | 99% |
| Hodgdon H4831 | <<locked>> | 96% | 58,247 psi | 90% | 3097 fps | 97.4% |
| Hodgdon H4831 SC | <<locked>> | 96% | 57,087 psi | 88% | 3077 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,985 psi | 88% | 3028 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,748 psi | 77% | 3117 fps | 98.6% |
| Hodgdon Superformance | <<locked>> | 88% | 58,392 psi | 90% | 3146 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,869 psi | 57% | 1919 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,840 psi | 87% | 2999 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,536 psi | 87% | 3031 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,623 psi | 87% | 3022 fps | 99.5% |
| IMR 4831 | <<locked>> | 90% | 56,115 psi | 86% | 3041 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,680 psi | 86% | 3022 fps | 97.1% |
| IMR 7828 SSC | <<locked>> | 98% | 55,811 psi | 86% | 3133 fps | 97.7% |
| Lovex S062 | <<locked>> | 82% | 57,305 psi | 88% | 2992 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 57,174 psi | 88% | 3022 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 58,784 psi | 90% | 3068 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,779 psi | 80% | 2966 fps | 99.6% |
| Norma 203B | <<locked>> | 82% | 58,146 psi | 89% | 3051 fps | 100% |
| Norma 204 | <<locked>> | 90% | 57,711 psi | 89% | 3091 fps | 98.7% |
| Norma MRP | <<locked>> | 96% | 57,769 psi | 89% | 3182 fps | 99.7% |
| Norma URP | <<locked>> | 90% | 58,001 psi | 89% | 3091 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 56,391 psi | 87% | 3153 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 90% | 56,956 psi | 88% | 3094 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,665 psi | 84% | 3084 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,536 psi | 58% | 1962 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,912 psi | 86% | 3009 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 57,421 psi | 88% | 3117 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,782 psi | 86% | 3071 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 58,131 psi | 89% | 3163 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,241 psi | 77% | 3117 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 84% | 56,318 psi | 87% | 3005 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 58,015 psi | 89% | 3068 fps | 98% |
| Rottweil R 905 | <<locked>> | 94% | 55,637 psi | 86% | 3077 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 88% | 58,682 psi | 90% | 3051 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 88% | 57,174 psi | 88% | 3022 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 57,305 psi | 88% | 2992 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 58,784 psi | 90% | 3068 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,769 psi | 89% | 3061 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,550 psi | 87% | 2877 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,666 psi | 87% | 2972 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 55,187 psi | 85% | 3071 fps | 98.7% |
| Somchem S355 | <<locked>> | 84% | 55,999 psi | 86% | 2999 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 56,144 psi | 86% | 2999 fps | 97% |
| Somchem S365 | <<locked>> | 92% | 58,073 psi | 89% | 3091 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 56,246 psi | 87% | 3051 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 86% | 57,319 psi | 88% | 2969 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 56,231 psi | 87% | 3028 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,579 psi | 86% | 3022 fps | 99% |
| Vihtavuori N540 | <<locked>> | 82% | 57,928 psi | 89% | 2966 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 55,535 psi | 85% | 3031 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 57,464 psi | 88% | 3104 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 57,711 psi | 89% | 3173 fps | 97.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,359 psi | 82% | 3077 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,927 psi | 86% | 2986 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 58,001 psi | 89% | 3110 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 55,724 psi | 86% | 3209 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 56,275 psi | 87% | 3045 fps | 98.7% |
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 2700 | <<locked>> | 80% | 54,302 psi | 84% | 2946 fps | 98.9% |
| Accurate 3100 | <<locked>> | 82% | 33,765 psi | 52% | 2592 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 54,563 psi | 84% | 2933 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 42,380 psi | 65% | 2812 fps | 99.3% |
| Accurate MAGPRO | <<locked>> | 94% | 52,794 psi | 81% | 3087 fps | 96% |
| ADI AR 2208 | <<locked>> | 80% | 50,647 psi | 78% | 2910 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 43,453 psi | 67% | 2851 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 92% | 47,442 psi | 73% | 2963 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 98% | 37,855 psi | 58% | 2795 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,677 psi | 80% | 2933 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 55,013 psi | 85% | 3009 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,828 psi | 63% | 2822 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,862 psi | 72% | 2949 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 40,596 psi | 62% | 2782 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 88% | 41,147 psi | 63% | 2838 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,298 psi | 47% | 2562 fps | 97.8% |
| Alliant Reloder-25 | <<locked>> | 86% | 32,169 psi | 49% | 2635 fps | 95.4% |
| Alliant Reloder-26 | 73.9 gr | 80% | 32,721 psi | 50% | 2687 fps | 96.5% |
| Bofors RP15 | <<locked>> | 90% | 40,770 psi | 63% | 2828 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 52,504 psi | 81% | 2949 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 43,598 psi | 67% | 2920 fps | 95.3% |
| Bofors RP5 | <<locked>> | 88% | 41,147 psi | 63% | 2838 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 45,716 psi | 70% | 2822 fps | 97.6% |
| Hodgdon H1000 | <<locked>> | 96% | 43,685 psi | 67% | 2877 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 52,533 psi | 81% | 2966 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 44,135 psi | 68% | 2858 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 80% | 46,920 psi | 72% | 2881 fps | 97.2% |
| Hodgdon H4831 | <<locked>> | 90% | 47,529 psi | 73% | 2910 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 92% | 49,821 psi | 77% | 2953 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,406 psi | 59% | 2703 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 94% | 40,741 psi | 63% | 2910 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 43,395 psi | 67% | 2874 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,586 psi | 42% | 1716 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,301 psi | 82% | 2943 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,263 psi | 63% | 2746 fps | 96.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,992 psi | 72% | 2848 fps | 98.2% |
| IMR 4831 | <<locked>> | 80% | 40,524 psi | 62% | 2759 fps | 99.1% |
| IMR 4955 Enduron | <<locked>> | 90% | 49,124 psi | 76% | 2907 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 92% | 45,484 psi | 70% | 2936 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 53,795 psi | 83% | 2940 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,686 psi | 69% | 2802 fps | 98.9% |
| Lovex S070 | <<locked>> | 80% | 42,902 psi | 66% | 2779 fps | 97.6% |
| Lovex S071 | <<locked>> | 86% | 32,953 psi | 51% | 2569 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 54,360 psi | 84% | 2992 fps | 100% |
| Norma 204 | <<locked>> | 82% | 43,947 psi | 68% | 2838 fps | 95.9% |
| Norma MRP | 75.3 gr | 84% | 37,681 psi | 58% | 2782 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 41,843 psi | 64% | 2802 fps | 99.2% |
| Ramshot Grand | <<locked>> | 92% | 45,426 psi | 70% | 2946 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 40,698 psi | 63% | 2789 fps | 97.7% |
| Ramshot Magnum | <<locked>> | 92% | 40,480 psi | 62% | 2812 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,079 psi | 43% | 1755 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,359 psi | 81% | 2949 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,705 psi | 76% | 2999 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,264 psi | 65% | 2828 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,654 psi | 63% | 2838 fps | 98.7% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 37,681 psi | 58% | 2822 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 80% | 49,443 psi | 76% | 2894 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 45,005 psi | 69% | 2831 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 86% | 42,467 psi | 65% | 2828 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 45,716 psi | 70% | 2822 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,686 psi | 69% | 2802 fps | 98.9% |
| Shooters World Precision | <<locked>> | 80% | 53,795 psi | 83% | 2940 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,902 psi | 66% | 2779 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,734 psi | 78% | 2953 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,922 psi | 77% | 2782 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,700 psi | 67% | 2743 fps | 97.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 42,119 psi | 65% | 2822 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 49,516 psi | 76% | 2894 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 49,269 psi | 76% | 2881 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 38,624 psi | 59% | 2756 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 37,782 psi | 58% | 2690 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 80% | 47,253 psi | 73% | 2815 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,178 psi | 66% | 2799 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 88% | 39,871 psi | 61% | 2730 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 54,288 psi | 84% | 2913 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,612 psi | 66% | 2799 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 80% | 33,823 psi | 52% | 2641 fps | 97.8% |
| Vihtavuori N560 | 80.7 gr | 90% | 46,804 psi | 72% | 2972 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 96% | 46,412 psi | 71% | 2946 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,337 psi | 65% | 2762 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,324 psi | 68% | 2861 fps | 97.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,832 psi | 41% | 2543 fps | 97.1% |
| Winchester Supreme 780 | <<locked>> | 88% | 42,627 psi | 66% | 2795 fps | 95.7% |
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 89 powders for .300 PRC loaded with the .308 | 165gr | Frontier BTSP. Winchester StaBALL HD delivers the highest muzzle velocity at 3,209 fps; across all powders the maximum-charge window runs from 1,919 fps to 3,209 fps. ADI AR 2217 gives the best case fill at 100 %, and 89 of the 89 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.308" calls for a 1:10.5 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, Norma MRP, Vihtavuori N560 rank at the top here: for .300 PRC with the .308 | 165gr | Frontier BTSP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Baschieri & Pellagri 109, IMR 8133 Enduron, Norma 217 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.