Load Specifications
Load data in caliber .300 PRC with .308 | 171gr | Peregrine VLR5 (VLR-5) bullet and 91 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 2495 | <<locked>> | 82% | 58,581 psi | 90% | 2887 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 56,188 psi | 86% | 2923 fps | 99.2% |
| Accurate 3100 | <<locked>> | 98% | 55,405 psi | 85% | 2976 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 55,535 psi | 85% | 2900 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 57,290 psi | 88% | 3022 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 57,116 psi | 88% | 3130 fps | 98.3% |
| Accurate MAGPRO | <<locked>> | 98% | 58,233 psi | 90% | 3130 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 84% | 55,709 psi | 86% | 2940 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 58,421 psi | 90% | 3077 fps | 99% |
| ADI AR 2213 | <<locked>> | 98% | 56,086 psi | 86% | 3074 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,392 psi | 59% | 2769 fps | 96.5% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 58,697 psi | 90% | 3074 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 56,681 psi | 87% | 2959 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 56,840 psi | 87% | 2986 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 58,349 psi | 90% | 3084 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 55,912 psi | 86% | 3045 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 57,870 psi | 89% | 3064 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 98% | 55,492 psi | 85% | 3068 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 56,347 psi | 87% | 3045 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,559 psi | 75% | 2979 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 56,898 psi | 88% | 3136 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,404 psi | 84% | 3048 fps | 98.6% |
| Bofors RP3 | <<locked>> | 84% | 57,682 psi | 89% | 2979 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 55,492 psi | 85% | 3068 fps | 98.8% |
| Bofors RP7 | <<locked>> | 88% | 56,826 psi | 87% | 2969 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,080 psi | 74% | 2923 fps | 96.9% |
| Hodgdon H380 | <<locked>> | 84% | 58,044 psi | 89% | 3002 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 55,796 psi | 86% | 3022 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 88% | 58,697 psi | 90% | 3035 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 96% | 56,072 psi | 86% | 3012 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,955 psi | 85% | 2995 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 58,610 psi | 90% | 2999 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,558 psi | 73% | 3025 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 88% | 56,318 psi | 87% | 3061 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,550 psi | 56% | 1867 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 58,653 psi | 90% | 2972 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 57,638 psi | 89% | 2963 fps | 99.7% |
| IMR 4350 | <<locked>> | 92% | 58,204 psi | 90% | 3009 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 88% | 58,595 psi | 90% | 2999 fps | 99.7% |
| IMR 4831 | <<locked>> | 92% | 57,783 psi | 89% | 3012 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 58,349 psi | 90% | 3012 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 57,377 psi | 88% | 2999 fps | 97.6% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 57,406 psi | 88% | 3110 fps | 98.2% |
| Lovex S062 | <<locked>> | 82% | 55,390 psi | 85% | 2913 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 58,755 psi | 90% | 2992 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 56,710 psi | 87% | 2986 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,255 psi | 76% | 2874 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 56,144 psi | 86% | 2969 fps | 100% |
| Norma 204 | <<locked>> | 90% | 55,550 psi | 85% | 3005 fps | 98.5% |
| Norma MRP | <<locked>> | 96% | 55,201 psi | 85% | 3091 fps | 99.6% |
| Norma URP | <<locked>> | 90% | 55,869 psi | 86% | 3005 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 57,246 psi | 88% | 2995 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 58,218 psi | 90% | 3130 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 92% | 58,523 psi | 90% | 3068 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,083 psi | 80% | 2992 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,362 psi | 57% | 1913 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 57,740 psi | 89% | 2982 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 55,187 psi | 85% | 3035 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 57,537 psi | 89% | 3048 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 55,970 psi | 86% | 3077 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,732 psi | 73% | 3018 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 82% | 57,174 psi | 88% | 2923 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 57,754 psi | 89% | 2972 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 56,130 psi | 86% | 2986 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 96% | 57,232 psi | 88% | 3051 fps | 99% |
| Rottweil R 907 | <<locked>> | 88% | 56,826 psi | 87% | 2969 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 58,755 psi | 90% | 2992 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 55,390 psi | 85% | 2913 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 56,710 psi | 87% | 2986 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 55,883 psi | 86% | 2982 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 58,247 psi | 90% | 2848 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 58,494 psi | 90% | 2946 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 56,753 psi | 87% | 3048 fps | 99% |
| Somchem S355 | <<locked>> | 86% | 57,711 psi | 89% | 2969 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 58,030 psi | 89% | 2982 fps | 97.5% |
| Somchem S365 | <<locked>> | 92% | 55,651 psi | 86% | 3005 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 57,580 psi | 89% | 3022 fps | 99.5% |
| Vihtavuori N135 | <<locked>> | 82% | 57,754 psi | 89% | 2877 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 58,059 psi | 89% | 2897 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 55,317 psi | 85% | 2890 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 57,943 psi | 89% | 2999 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 57,246 psi | 88% | 2999 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 82% | 56,173 psi | 86% | 2890 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 56,985 psi | 88% | 3005 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 58,537 psi | 90% | 3071 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 55,303 psi | 85% | 3084 fps | 97.3% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,734 psi | 78% | 2986 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 57,885 psi | 89% | 2963 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,796 psi | 86% | 3022 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 52,924 psi | 81% | 3120 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 58,102 psi | 89% | 3022 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 2495 | <<locked>> | 80% | 54,868 psi | 84% | 2838 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 52,576 psi | 81% | 2867 fps | 98.8% |
| Accurate 3100 | <<locked>> | 84% | 34,069 psi | 52% | 2562 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 52,127 psi | 80% | 2848 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,422 psi | 62% | 2726 fps | 99.1% |
| Accurate High Country | <<locked>> | 90% | 46,035 psi | 71% | 2927 fps | 95.8% |
| Accurate MAGPRO | <<locked>> | 94% | 50,357 psi | 77% | 2995 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 49,124 psi | 76% | 2831 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 41,727 psi | 64% | 2769 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 92% | 45,643 psi | 70% | 2881 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 98% | 36,013 psi | 55% | 2703 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 41,989 psi | 65% | 2769 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,980 psi | 77% | 2858 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,403 psi | 82% | 2933 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,088 psi | 60% | 2736 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,947 psi | 69% | 2867 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 41,553 psi | 64% | 2762 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 90% | 42,105 psi | 65% | 2815 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,601 psi | 44% | 2477 fps | 97.3% |
| Alliant Reloder-25 | <<locked>> | 88% | 32,677 psi | 50% | 2608 fps | 95.9% |
| Alliant Reloder-26 | 71 gr | 80% | 30,821 psi | 47% | 2592 fps | 95.8% |
| Bofors RP15 | <<locked>> | 92% | 41,524 psi | 64% | 2802 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 50,459 psi | 78% | 2867 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 42,105 psi | 65% | 2815 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 43,976 psi | 68% | 2740 fps | 97.3% |
| Hodgdon H1000 | <<locked>> | 98% | 44,773 psi | 69% | 2854 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 50,720 psi | 78% | 2884 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 42,467 psi | 65% | 2776 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 80% | 45,324 psi | 70% | 2802 fps | 97% |
| Hodgdon H4831 | <<locked>> | 92% | 48,936 psi | 75% | 2890 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 47,979 psi | 74% | 2871 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,680 psi | 56% | 2621 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 94% | 38,798 psi | 60% | 2815 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 41,466 psi | 64% | 2789 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,383 psi | 42% | 1670 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,706 psi | 80% | 2867 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 53,998 psi | 83% | 2904 fps | 99.4% |
| IMR 4350 | <<locked>> | 80% | 39,668 psi | 61% | 2664 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,629 psi | 70% | 2776 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 38,653 psi | 59% | 2674 fps | 98.8% |
| IMR 4895 | <<locked>> | 80% | 54,810 psi | 84% | 2959 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 47,456 psi | 73% | 2825 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 94% | 46,601 psi | 72% | 2910 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 52,040 psi | 80% | 2861 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,873 psi | 66% | 2720 fps | 98.6% |
| Lovex S070 | <<locked>> | 80% | 41,089 psi | 63% | 2697 fps | 97.3% |
| Lovex S071 | <<locked>> | 88% | 33,069 psi | 51% | 2536 fps | 95.4% |
| Norma 203B | <<locked>> | 80% | 52,721 psi | 81% | 2913 fps | 100% |
| Norma 204 | <<locked>> | 82% | 42,134 psi | 65% | 2756 fps | 95.5% |
| Norma MRP | 72.4 gr | 84% | 35,868 psi | 55% | 2700 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 40,001 psi | 62% | 2717 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 80% | 53,548 psi | 82% | 2940 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 43,410 psi | 67% | 2858 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 38,914 psi | 60% | 2707 fps | 97.4% |
| Ramshot Magnum | <<locked>> | 92% | 38,580 psi | 59% | 2726 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,847 psi | 43% | 1709 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,618 psi | 78% | 2867 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,805 psi | 74% | 2917 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,321 psi | 62% | 2743 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,001 psi | 60% | 2756 fps | 98.5% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 35,636 psi | 55% | 2726 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 53,708 psi | 83% | 2871 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,340 psi | 73% | 2812 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 46,151 psi | 71% | 2808 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 86% | 40,727 psi | 63% | 2743 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 43,976 psi | 68% | 2740 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,873 psi | 66% | 2720 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 52,040 psi | 80% | 2861 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,089 psi | 63% | 2697 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,878 psi | 75% | 2871 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,457 psi | 75% | 2710 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,018 psi | 65% | 2664 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 40,393 psi | 62% | 2740 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 47,543 psi | 73% | 2812 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 47,355 psi | 73% | 2802 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 36,651 psi | 56% | 2671 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 38,537 psi | 59% | 2667 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 80% | 54,346 psi | 84% | 2831 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 54,331 psi | 84% | 2844 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 45,455 psi | 70% | 2736 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,597 psi | 64% | 2720 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 38,159 psi | 59% | 2651 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 52,605 psi | 81% | 2838 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,915 psi | 63% | 2717 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 80% | 31,923 psi | 49% | 2556 fps | 97.3% |
| Vihtavuori N560 | 79.3 gr | 92% | 48,095 psi | 74% | 2953 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 98% | 47,311 psi | 73% | 2920 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,654 psi | 63% | 2687 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,467 psi | 65% | 2776 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,193 psi | 39% | 2444 fps | 96.1% |
| Winchester Supreme 780 | <<locked>> | 88% | 40,640 psi | 63% | 2710 fps | 95.3% |
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 91 powders for .300 PRC loaded with the .308 | 171gr | Peregrine VLR5 (VLR-5). Alliant Reloder-26 delivers the highest muzzle velocity at 3,136 fps; across all powders the maximum-charge window runs from 1,867 fps to 3,136 fps. ADI AR 2225 gives the best case fill at 100 %, and 91 of the 91 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 171.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-23, 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 VLR5 (VLR-5) they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.