Load Specifications
Load data in caliber .300 PRC with .308 | 171gr | Peregrine VRG-2 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.
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 2700 | <<locked>> | 82% | 58,218 psi | 90% | 2966 fps | 99.5% |
| Accurate 3100 | <<locked>> | 98% | 58,233 psi | 90% | 3022 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 57,682 psi | 89% | 2933 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 55,883 psi | 86% | 3009 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 57,101 psi | 88% | 3120 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 84% | 57,493 psi | 88% | 2976 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 57,087 psi | 88% | 3064 fps | 99% |
| ADI AR 2213 | <<locked>> | 98% | 58,682 psi | 90% | 3127 fps | 98.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,379 psi | 62% | 2825 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,172 psi | 85% | 2946 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 58,784 psi | 90% | 3022 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 57,000 psi | 88% | 3071 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 58,465 psi | 90% | 3087 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 56,376 psi | 87% | 3048 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 98% | 58,233 psi | 90% | 3117 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 98% | 55,245 psi | 85% | 3031 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,024 psi | 78% | 3028 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 55,796 psi | 86% | 3123 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 57,101 psi | 88% | 3097 fps | 99.1% |
| Bofors RP3 | <<locked>> | 82% | 56,028 psi | 86% | 2959 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,949 psi | 72% | 2949 fps | 96.8% |
| Bofors RP5 | <<locked>> | 98% | 58,233 psi | 90% | 3117 fps | 99.3% |
| Bofors RP7 | <<locked>> | 86% | 55,230 psi | 85% | 2956 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,270 psi | 77% | 2972 fps | 97.8% |
| Hodgdon H380 | <<locked>> | 82% | 56,304 psi | 87% | 2982 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 58,088 psi | 89% | 3068 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 86% | 57,246 psi | 88% | 3025 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 96% | 58,697 psi | 90% | 3064 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 96% | 57,537 psi | 89% | 3045 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 57,348 psi | 88% | 2989 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,082 psi | 77% | 3084 fps | 99% |
| Hodgdon Superformance | <<locked>> | 86% | 54,636 psi | 84% | 3041 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,724 psi | 56% | 1883 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 57,029 psi | 88% | 2956 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,826 psi | 87% | 2995 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,898 psi | 88% | 2982 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 56,333 psi | 87% | 2999 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,999 psi | 86% | 2989 fps | 97.6% |
| IMR 7828 SSC | <<locked>> | 98% | 56,057 psi | 86% | 3094 fps | 98.1% |
| Lovex S062 | <<locked>> | 82% | 57,159 psi | 88% | 2946 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 57,305 psi | 88% | 2979 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 55,317 psi | 85% | 2972 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,605 psi | 79% | 2920 fps | 99.7% |
| Norma 203B | <<locked>> | 82% | 58,088 psi | 89% | 3005 fps | 100% |
| Norma 204 | <<locked>> | 90% | 57,870 psi | 89% | 3051 fps | 99% |
| Norma MRP | <<locked>> | 96% | 58,088 psi | 89% | 3140 fps | 99.9% |
| Norma URP | <<locked>> | 90% | 58,291 psi | 90% | 3048 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 56,985 psi | 88% | 3120 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 90% | 57,072 psi | 88% | 3048 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 55,013 psi | 85% | 3048 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,521 psi | 58% | 1929 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,101 psi | 86% | 2966 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 57,986 psi | 89% | 3074 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 56,014 psi | 86% | 3031 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 58,479 psi | 90% | 3120 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,459 psi | 78% | 3081 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 84% | 56,318 psi | 87% | 2959 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 58,392 psi | 90% | 3031 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 94% | 55,767 psi | 86% | 3035 fps | 99% |
| Rottweil R 907 | <<locked>> | 86% | 55,230 psi | 85% | 2956 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 57,305 psi | 88% | 2979 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 57,159 psi | 88% | 2946 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,317 psi | 85% | 2972 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 58,088 psi | 89% | 3022 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,507 psi | 87% | 2835 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,782 psi | 87% | 2933 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 55,317 psi | 85% | 3031 fps | 98.9% |
| Somchem S355 | <<locked>> | 84% | 56,072 psi | 86% | 2953 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 56,463 psi | 87% | 2966 fps | 97.5% |
| Somchem S365 | <<locked>> | 92% | 58,465 psi | 90% | 3048 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 56,289 psi | 87% | 3009 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 86% | 57,508 psi | 88% | 2930 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 56,521 psi | 87% | 2986 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,941 psi | 86% | 2989 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 82% | 58,102 psi | 89% | 2923 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 55,492 psi | 85% | 2989 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 57,435 psi | 88% | 3058 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 57,986 psi | 89% | 3133 fps | 98% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,505 psi | 82% | 3041 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 56,130 psi | 86% | 2943 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 58,088 psi | 89% | 3068 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 56,623 psi | 87% | 3169 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 56,463 psi | 87% | 3005 fps | 98.9% |
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% | 54,418 psi | 84% | 2907 fps | 99.2% |
| Accurate 3100 | <<locked>> | 82% | 33,228 psi | 51% | 2543 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 54,041 psi | 83% | 2884 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 42,134 psi | 65% | 2766 fps | 99.4% |
| Accurate MAGPRO | <<locked>> | 92% | 49,313 psi | 76% | 2979 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 50,821 psi | 78% | 2867 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 40,727 psi | 63% | 2753 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 90% | 44,570 psi | 69% | 2864 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 96% | 35,317 psi | 54% | 2690 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,735 psi | 80% | 2890 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 55,129 psi | 85% | 2966 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,727 psi | 63% | 2779 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,108 psi | 72% | 2910 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 40,640 psi | 63% | 2746 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 88% | 41,249 psi | 63% | 2799 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,921 psi | 46% | 2520 fps | 98% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,981 psi | 49% | 2595 fps | 95.8% |
| Alliant Reloder-26 | 73.8 gr | 80% | 32,518 psi | 50% | 2644 fps | 96.8% |
| Bofors RP15 | <<locked>> | 90% | 40,828 psi | 63% | 2789 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 52,417 psi | 81% | 2907 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 43,787 psi | 67% | 2884 fps | 95.8% |
| Bofors RP5 | <<locked>> | 88% | 41,249 psi | 63% | 2799 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 45,643 psi | 70% | 2782 fps | 97.9% |
| Hodgdon H1000 | <<locked>> | 96% | 43,801 psi | 67% | 2844 fps | 96% |
| Hodgdon H380 | <<locked>> | 80% | 52,562 psi | 81% | 2923 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 44,193 psi | 68% | 2818 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 80% | 47,021 psi | 72% | 2841 fps | 97.6% |
| Hodgdon H4831 | <<locked>> | 90% | 47,776 psi | 74% | 2874 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 90% | 46,833 psi | 72% | 2858 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,348 psi | 59% | 2664 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 38,189 psi | 59% | 2808 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 43,569 psi | 67% | 2838 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,398 psi | 42% | 1683 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,432 psi | 82% | 2904 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,249 psi | 63% | 2710 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,094 psi | 72% | 2812 fps | 98.5% |
| IMR 4831 | <<locked>> | 80% | 40,408 psi | 62% | 2717 fps | 99.2% |
| IMR 4955 Enduron | <<locked>> | 88% | 46,267 psi | 71% | 2812 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 92% | 45,687 psi | 70% | 2904 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 53,809 psi | 83% | 2897 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,411 psi | 68% | 2756 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 42,757 psi | 66% | 2740 fps | 97.9% |
| Lovex S071 | <<locked>> | 86% | 32,547 psi | 50% | 2526 fps | 95.4% |
| Norma 203B | <<locked>> | 80% | 54,462 psi | 84% | 2949 fps | 100% |
| Norma 204 | <<locked>> | 80% | 41,017 psi | 63% | 2736 fps | 95.4% |
| Norma MRP | 73.4 gr | 82% | 34,998 psi | 54% | 2677 fps | 95% |
| Norma URP | <<locked>> | 80% | 41,800 psi | 64% | 2759 fps | 99.3% |
| Ramshot Grand | <<locked>> | 90% | 42,351 psi | 65% | 2841 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 40,727 psi | 63% | 2749 fps | 98% |
| Ramshot Magnum | <<locked>> | 90% | 37,666 psi | 58% | 2710 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,021 psi | 43% | 1726 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,489 psi | 81% | 2907 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,038 psi | 77% | 2959 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,221 psi | 65% | 2789 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,698 psi | 63% | 2799 fps | 99% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 37,492 psi | 58% | 2782 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 80% | 49,327 psi | 76% | 2851 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,947 psi | 69% | 2792 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 84% | 39,726 psi | 61% | 2726 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 45,643 psi | 70% | 2782 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,411 psi | 68% | 2756 fps | 99% |
| Shooters World Precision | <<locked>> | 80% | 53,809 psi | 83% | 2897 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,757 psi | 66% | 2740 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,894 psi | 78% | 2910 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,980 psi | 77% | 2743 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,526 psi | 67% | 2703 fps | 98% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 39,378 psi | 61% | 2723 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 49,240 psi | 76% | 2848 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 46,050 psi | 71% | 2785 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 38,566 psi | 59% | 2717 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 37,608 psi | 58% | 2651 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 47,253 psi | 73% | 2772 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,178 psi | 66% | 2756 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 86% | 37,275 psi | 57% | 2635 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 54,375 psi | 84% | 2871 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,540 psi | 65% | 2756 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 33,533 psi | 52% | 2598 fps | 98% |
| Vihtavuori N560 | 80.6 gr | 90% | 47,036 psi | 72% | 2936 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 96% | 46,543 psi | 72% | 2910 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,453 psi | 65% | 2726 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,382 psi | 68% | 2822 fps | 98.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,484 psi | 41% | 2503 fps | 97.4% |
| Winchester Supreme 780 | <<locked>> | 86% | 39,726 psi | 61% | 2697 fps | 95.2% |
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 90 powders for .300 PRC loaded with the .308 | 171gr | Peregrine VRG-2. Winchester StaBALL HD delivers the highest muzzle velocity at 3,169 fps; across all powders the maximum-charge window runs from 1,883 fps to 3,169 fps. ADI AR 2217 gives the best case fill at 100 %, and 90 of the 90 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 171.0 gr projectile in 0.308" calls for a 1:14.5 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 | 171gr | Peregrine VRG-2 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.