Load Specifications
Load data in caliber .300 PRC with .308 | 193gr | Peregrine VLR-4 bullet and 77 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 7828 SSC, Winchester StaBALL HD 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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 58,378 psi | 90% | 2864 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 55,782 psi | 86% | 2838 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 57,319 psi | 88% | 2966 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 82% | 57,087 psi | 88% | 2799 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 56,956 psi | 88% | 2900 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 96% | 58,697 psi | 90% | 2969 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,863 psi | 75% | 2802 fps | 98.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,511 psi | 67% | 2759 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 58,436 psi | 90% | 2822 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 57,159 psi | 88% | 2897 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 58,363 psi | 90% | 2910 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,550 psi | 87% | 2890 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 96% | 58,552 psi | 90% | 2959 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 55,956 psi | 86% | 2874 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,216 psi | 85% | 2933 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 56,304 psi | 87% | 2959 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 56,434 psi | 87% | 2867 fps | 96.6% |
| Bofors RP15 | <<locked>> | 98% | 57,392 psi | 88% | 2940 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,981 psi | 78% | 2867 fps | 98.7% |
| Bofors RP5 | <<locked>> | 96% | 58,552 psi | 90% | 2959 fps | 99.8% |
| Bofors RP7 | <<locked>> | 86% | 58,349 psi | 90% | 2844 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,969 psi | 83% | 2890 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 86% | 57,812 psi | 89% | 2897 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 56,768 psi | 87% | 2854 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 94% | 58,537 psi | 90% | 2904 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 94% | 57,377 psi | 88% | 2887 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,232 psi | 88% | 2818 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,099 psi | 83% | 3002 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 58,552 psi | 90% | 2940 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,999 psi | 57% | 1772 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,492 psi | 87% | 2831 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,318 psi | 87% | 2812 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 56,246 psi | 87% | 2831 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,637 psi | 86% | 2828 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 96% | 56,260 psi | 87% | 2940 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 56,913 psi | 88% | 2812 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 58,581 psi | 90% | 2861 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 55,564 psi | 85% | 2822 fps | 100% |
| Norma 204 | <<locked>> | 88% | 57,638 psi | 89% | 2887 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 39,001 psi | 60% | 2680 fps | 97.8% |
| Norma MRP | <<locked>> | 94% | 58,378 psi | 90% | 2979 fps | 100% |
| Norma URP | <<locked>> | 88% | 58,131 psi | 89% | 2877 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 57,261 psi | 88% | 2966 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 88% | 57,043 psi | 88% | 2884 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,405 psi | 85% | 2897 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,898 psi | 58% | 1814 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 58,131 psi | 89% | 2897 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,115 psi | 86% | 2864 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 58,581 psi | 90% | 2949 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,810 psi | 84% | 2999 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,443 psi | 76% | 2877 fps | 97.1% |
| Rottweil R 903 | <<locked>> | 82% | 56,115 psi | 86% | 2789 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 58,233 psi | 90% | 2871 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 92% | 55,970 psi | 86% | 2881 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 86% | 58,349 psi | 90% | 2844 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,913 psi | 88% | 2812 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 58,581 psi | 90% | 2861 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 57,667 psi | 89% | 2844 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,057 psi | 86% | 2661 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,130 psi | 86% | 2766 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,521 psi | 85% | 2874 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 55,695 psi | 86% | 2782 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,057 psi | 86% | 2808 fps | 98.4% |
| Somchem S365 | <<locked>> | 90% | 58,769 psi | 90% | 2877 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 56,333 psi | 87% | 2851 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 57,000 psi | 88% | 2756 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,217 psi | 86% | 2815 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 55,970 psi | 86% | 2835 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 55,405 psi | 85% | 2822 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 57,986 psi | 89% | 2897 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 58,204 psi | 90% | 2976 fps | 98.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 57,827 psi | 89% | 2953 fps | 99% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 50,705 psi | 78% | 2887 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 55,840 psi | 86% | 2779 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 58,044 psi | 89% | 2900 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 57,769 psi | 89% | 3005 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 56,362 psi | 87% | 2848 fps | 99.6% |
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% | 33,533 psi | 52% | 2415 fps | 97.2% |
| Accurate 4350 | <<locked>> | 80% | 45,339 psi | 70% | 2674 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 42,975 psi | 66% | 2710 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 53,693 psi | 83% | 2749 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,043 psi | 59% | 2552 fps | 96% |
| ADI AR 2213 | <<locked>> | 86% | 41,495 psi | 64% | 2657 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 94% | 39,943 psi | 61% | 2621 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 92% | 33,373 psi | 51% | 2516 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 54,955 psi | 85% | 2772 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,787 psi | 67% | 2684 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,647 psi | 78% | 2799 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,927 psi | 58% | 2543 fps | 96% |
| Alliant Reloder-22 | <<locked>> | 82% | 36,245 psi | 56% | 2543 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,460 psi | 50% | 2451 fps | 99.6% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,195 psi | 43% | 2352 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,418 psi | 54% | 2579 fps | 99% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 53,113 psi | 82% | 2812 fps | 95.8% |
| Bofors RP15 | <<locked>> | 84% | 35,926 psi | 55% | 2536 fps | 95.2% |
| Bofors RP30 | <<locked>> | 92% | 38,696 psi | 60% | 2631 fps | 95.6% |
| Bofors RP5 | <<locked>> | 82% | 36,245 psi | 56% | 2543 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 48,240 psi | 74% | 2680 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 90% | 38,116 psi | 59% | 2582 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 47,311 psi | 73% | 2726 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 80% | 49,966 psi | 77% | 2743 fps | 99% |
| Hodgdon H4831 | <<locked>> | 84% | 41,481 psi | 64% | 2605 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 86% | 43,555 psi | 67% | 2648 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,234 psi | 63% | 2569 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 35,940 psi | 55% | 2615 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 46,905 psi | 72% | 2753 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,702 psi | 43% | 1581 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,830 psi | 67% | 2615 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,661 psi | 76% | 2707 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 43,279 psi | 67% | 2621 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 43,207 psi | 66% | 2608 fps | 95.8% |
| IMR 7828 SSC | 72.1 gr | 86% | 39,958 psi | 61% | 2635 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 47,181 psi | 73% | 2657 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 45,440 psi | 70% | 2644 fps | 99.3% |
| Lovex S071 | <<locked>> | 80% | 28,790 psi | 44% | 2293 fps | 95.1% |
| Norma 204 | <<locked>> | 80% | 43,758 psi | 67% | 2651 fps | 97.5% |
| Norma 217 | <<locked>> | 96% | 34,011 psi | 52% | 2559 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 35,215 psi | 54% | 2546 fps | 96.6% |
| Norma URP | <<locked>> | 80% | 44,686 psi | 69% | 2661 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 39,508 psi | 61% | 2638 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 43,555 psi | 67% | 2661 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 86% | 35,099 psi | 54% | 2516 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,253 psi | 43% | 1621 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 53,940 psi | 83% | 2841 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,397 psi | 70% | 2694 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,801 psi | 67% | 2713 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 32,663 psi | 50% | 2523 fps | 95.6% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 42,438 psi | 65% | 2743 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 52,446 psi | 81% | 2736 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 39,378 psi | 61% | 2533 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 80% | 37,202 psi | 57% | 2530 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 48,240 psi | 74% | 2680 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,181 psi | 73% | 2657 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 45,440 psi | 70% | 2644 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 54,041 psi | 83% | 2795 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,634 psi | 81% | 2618 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,122 psi | 71% | 2605 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,883 psi | 57% | 2523 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 52,344 psi | 81% | 2733 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 42,830 psi | 66% | 2582 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 41,698 psi | 64% | 2618 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,797 psi | 58% | 2516 fps | 97% |
| Vihtavuori N150 | <<locked>> | 80% | 50,082 psi | 77% | 2657 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,108 psi | 71% | 2657 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 34,954 psi | 54% | 2444 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 45,498 psi | 70% | 2661 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 36,318 psi | 56% | 2523 fps | 99.5% |
| Vihtavuori N560 | 73.1 gr | 84% | 40,944 psi | 63% | 2664 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 90% | 40,872 psi | 63% | 2651 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 98% | 47,253 psi | 73% | 2822 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,252 psi | 70% | 2621 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,514 psi | 73% | 2730 fps | 99.4% |
| Winchester StaBALL HD | 68.9 gr | 80% | 28,645 psi | 44% | 2457 fps | 99.6% |
| Winchester Supreme 780 | <<locked>> | 82% | 37,043 psi | 57% | 2497 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 82 powders for .300 PRC loaded with the .308 | 193gr | Peregrine VLR-4. Winchester StaBALL HD delivers the highest muzzle velocity at 3,005 fps; across all powders the maximum-charge window runs from 1,772 fps to 3,005 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 193.0 gr projectile in 0.308" calls for a 1:10.0 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. IMR 7828 SSC, Winchester StaBALL HD, Vihtavuori N560 rank at the top here: for .300 PRC with the .308 | 193gr | Peregrine VLR-4 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 Enduron, 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.