Load Specifications
Load data in caliber .300 PRC with .308 | 176gr | Peregrine Glider (Glider GRM) bullet and 88 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% | 57,261 psi | 88% | 2904 fps | 99.5% |
| Accurate 3100 | <<locked>> | 98% | 56,869 psi | 87% | 2959 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 56,739 psi | 87% | 2874 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 58,711 psi | 90% | 3005 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 58,697 psi | 90% | 3117 fps | 98.7% |
| Accurate MAGPRO | <<locked>> | 96% | 55,753 psi | 86% | 3054 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 84% | 56,768 psi | 87% | 2913 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,985 psi | 86% | 3002 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 98% | 57,464 psi | 88% | 3061 fps | 98.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,407 psi | 61% | 2766 fps | 97.3% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,130 psi | 86% | 2995 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 57,841 psi | 89% | 2936 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 58,001 psi | 89% | 2963 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,999 psi | 86% | 3009 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 57,334 psi | 88% | 3025 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,347 psi | 85% | 2989 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,956 psi | 88% | 3051 fps | 99.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 57,899 psi | 89% | 3025 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,879 psi | 77% | 2966 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 96% | 58,682 psi | 90% | 3123 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,840 psi | 86% | 3035 fps | 99% |
| Bofors RP3 | <<locked>> | 82% | 55,042 psi | 85% | 2900 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,774 psi | 70% | 2887 fps | 96.6% |
| Bofors RP5 | <<locked>> | 98% | 56,956 psi | 88% | 3051 fps | 99.2% |
| Bofors RP7 | <<locked>> | 88% | 57,957 psi | 89% | 2949 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,298 psi | 76% | 2913 fps | 97.6% |
| Hodgdon H380 | <<locked>> | 82% | 55,419 psi | 85% | 2923 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 56,855 psi | 87% | 3002 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 86% | 56,347 psi | 87% | 2963 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 96% | 57,421 psi | 88% | 2999 fps | 97.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,275 psi | 87% | 2979 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,202 psi | 86% | 2927 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,820 psi | 75% | 3015 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 88% | 57,537 psi | 89% | 3041 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,651 psi | 56% | 1844 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,144 psi | 86% | 2897 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 58,682 psi | 90% | 2940 fps | 99.8% |
| IMR 4350 | <<locked>> | 90% | 55,869 psi | 86% | 2933 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,970 psi | 86% | 2923 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 55,259 psi | 85% | 2940 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 58,581 psi | 90% | 2982 fps | 98% |
| IMR 7828 SSC | <<locked>> | 98% | 55,071 psi | 85% | 3035 fps | 98% |
| Lovex S062 | <<locked>> | 82% | 56,478 psi | 87% | 2887 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,362 psi | 87% | 2920 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 57,899 psi | 89% | 2966 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,575 psi | 78% | 2861 fps | 99.7% |
| Norma 203B | <<locked>> | 82% | 57,290 psi | 88% | 2946 fps | 100% |
| Norma 204 | <<locked>> | 90% | 56,797 psi | 87% | 2989 fps | 98.9% |
| Norma MRP | <<locked>> | 96% | 56,768 psi | 87% | 3077 fps | 99.8% |
| Norma URP | <<locked>> | 90% | 57,159 psi | 88% | 2986 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 58,494 psi | 90% | 2976 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,550 psi | 85% | 3051 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 90% | 55,985 psi | 86% | 2989 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,621 psi | 82% | 2986 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,492 psi | 58% | 1886 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,143 psi | 85% | 2907 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,652 psi | 87% | 3012 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,868 psi | 84% | 2969 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 57,203 psi | 88% | 3058 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,095 psi | 76% | 3015 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 82% | 58,262 psi | 90% | 2897 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 55,347 psi | 85% | 2900 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,348 psi | 88% | 2972 fps | 98.3% |
| Rottweil R 905 | <<locked>> | 96% | 58,639 psi | 90% | 3035 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 88% | 57,957 psi | 89% | 2949 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,362 psi | 87% | 2920 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 56,478 psi | 87% | 2887 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 57,899 psi | 89% | 2966 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,101 psi | 88% | 2959 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,898 psi | 86% | 2779 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,782 psi | 86% | 2871 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 58,160 psi | 89% | 3031 fps | 99.3% |
| Somchem S355 | <<locked>> | 84% | 55,085 psi | 85% | 2894 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,347 psi | 85% | 2904 fps | 97.3% |
| Somchem S365 | <<locked>> | 92% | 57,130 psi | 88% | 2986 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,085 psi | 85% | 2946 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 86% | 56,478 psi | 87% | 2867 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,376 psi | 85% | 2923 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 58,610 psi | 90% | 2982 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 82% | 57,261 psi | 88% | 2864 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 58,233 psi | 90% | 2982 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,304 psi | 87% | 2999 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 56,797 psi | 87% | 3071 fps | 97.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,199 psi | 80% | 2976 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,172 psi | 85% | 2887 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,087 psi | 88% | 3005 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,679 psi | 84% | 3104 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,434 psi | 85% | 2943 fps | 98.8% |
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% | 53,606 psi | 82% | 2848 fps | 99.1% |
| Accurate 3100 | <<locked>> | 82% | 32,576 psi | 50% | 2493 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 53,214 psi | 82% | 2825 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,321 psi | 64% | 2710 fps | 99.4% |
| Accurate High Country | <<locked>> | 88% | 44,121 psi | 68% | 2851 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 92% | 48,066 psi | 74% | 2917 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 50,082 psi | 77% | 2812 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 40,001 psi | 62% | 2697 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 90% | 43,584 psi | 67% | 2802 fps | 95% |
| ADI AR 2225 | <<locked>> | 96% | 34,563 psi | 53% | 2635 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 40,147 psi | 62% | 2697 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,039 psi | 79% | 2835 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 54,273 psi | 83% | 2907 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,030 psi | 62% | 2720 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,151 psi | 71% | 2851 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 39,755 psi | 61% | 2687 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,292 psi | 62% | 2743 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,370 psi | 45% | 2467 fps | 97.9% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,299 psi | 48% | 2539 fps | 95.6% |
| Alliant Reloder-26 | 71 gr | 80% | 31,734 psi | 49% | 2589 fps | 96.7% |
| Bofors RP15 | <<locked>> | 90% | 39,929 psi | 61% | 2730 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 51,590 psi | 79% | 2848 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 42,612 psi | 66% | 2822 fps | 95.6% |
| Bofors RP5 | <<locked>> | 88% | 40,292 psi | 62% | 2743 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 44,860 psi | 69% | 2723 fps | 97.8% |
| Hodgdon H1000 | <<locked>> | 96% | 42,786 psi | 66% | 2779 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 51,808 psi | 80% | 2864 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 43,482 psi | 67% | 2766 fps | 98% |
| Hodgdon H4350 | <<locked>> | 80% | 46,296 psi | 71% | 2785 fps | 97.5% |
| Hodgdon H4831 | <<locked>> | 90% | 46,746 psi | 72% | 2812 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 90% | 45,788 psi | 70% | 2795 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,637 psi | 58% | 2608 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 92% | 37,391 psi | 58% | 2746 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 42,569 psi | 65% | 2779 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,470 psi | 42% | 1650 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,707 psi | 81% | 2844 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 54,984 psi | 85% | 2881 fps | 99.6% |
| IMR 4350 | <<locked>> | 80% | 40,538 psi | 62% | 2651 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,485 psi | 72% | 2756 fps | 98.5% |
| IMR 4831 | <<locked>> | 80% | 39,610 psi | 61% | 2661 fps | 99.2% |
| IMR 4955 Enduron | <<locked>> | 88% | 45,542 psi | 70% | 2756 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 92% | 44,715 psi | 69% | 2838 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 53,069 psi | 82% | 2838 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,772 psi | 67% | 2703 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 42,003 psi | 65% | 2684 fps | 97.8% |
| Lovex S071 | <<locked>> | 86% | 31,749 psi | 49% | 2470 fps | 95.3% |
| Norma 203B | <<locked>> | 80% | 53,592 psi | 82% | 2890 fps | 100% |
| Norma 204 | <<locked>> | 80% | 40,248 psi | 62% | 2680 fps | 95.3% |
| Norma MRP | 72.4 gr | 84% | 36,883 psi | 57% | 2690 fps | 96% |
| Norma URP | <<locked>> | 80% | 40,988 psi | 63% | 2703 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 80% | 54,723 psi | 84% | 2920 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 44,556 psi | 69% | 2851 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 39,885 psi | 61% | 2694 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 90% | 36,724 psi | 56% | 2651 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,963 psi | 43% | 1686 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,648 psi | 79% | 2848 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,066 psi | 75% | 2900 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,394 psi | 64% | 2730 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,987 psi | 62% | 2746 fps | 98.9% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,608 psi | 56% | 2723 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 54,708 psi | 84% | 2848 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 48,414 psi | 74% | 2792 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,266 psi | 68% | 2736 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 84% | 38,928 psi | 60% | 2671 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 44,860 psi | 69% | 2723 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,772 psi | 67% | 2703 fps | 99% |
| Shooters World Precision | <<locked>> | 80% | 53,069 psi | 82% | 2838 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,003 psi | 65% | 2684 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,980 psi | 77% | 2851 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,371 psi | 76% | 2687 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,830 psi | 66% | 2648 fps | 97.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 38,580 psi | 59% | 2664 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 48,559 psi | 75% | 2789 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 48,370 psi | 74% | 2785 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 37,710 psi | 58% | 2661 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 36,869 psi | 57% | 2595 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 46,412 psi | 71% | 2713 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,395 psi | 65% | 2700 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 88% | 38,986 psi | 60% | 2638 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 53,635 psi | 83% | 2815 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,843 psi | 64% | 2703 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 32,866 psi | 51% | 2549 fps | 98% |
| Vihtavuori N560 | 77.5 gr | 90% | 45,905 psi | 71% | 2874 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 96% | 45,382 psi | 70% | 2848 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,626 psi | 64% | 2671 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,482 psi | 67% | 2766 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,889 psi | 40% | 2448 fps | 97.2% |
| Winchester Supreme 780 | <<locked>> | 86% | 38,827 psi | 60% | 2638 fps | 95% |
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 88 powders for .300 PRC loaded with the .308 | 176gr | Peregrine Glider (Glider GRM). Alliant Reloder-26 delivers the highest muzzle velocity at 3,123 fps; across all powders the maximum-charge window runs from 1,844 fps to 3,123 fps. ADI AR 2225 gives the best case fill at 100 %, and 88 of the 88 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 176.0 gr projectile in 0.308" calls for a 1:10.0 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 | 176gr | Peregrine Glider (Glider GRM) 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.