Load Specifications
Load data in caliber .300 PRC with .308 | 176gr | Peregrine Glider GRM 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% | 58,160 psi | 89% | 2923 fps | 99.6% |
| Accurate 3100 | <<locked>> | 98% | 58,015 psi | 89% | 2979 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 57,638 psi | 89% | 2890 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 55,724 psi | 86% | 2963 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 56,811 psi | 87% | 3077 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 84% | 57,551 psi | 89% | 2930 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,884 psi | 88% | 3018 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 98% | 58,479 psi | 90% | 3081 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,498 psi | 70% | 2838 fps | 96% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,263 psi | 62% | 2789 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 58,668 psi | 90% | 2953 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,840 psi | 87% | 3022 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 58,392 psi | 90% | 3045 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 56,434 psi | 87% | 3009 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 58,059 psi | 89% | 3074 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 55,129 psi | 85% | 2989 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,850 psi | 78% | 2986 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 55,651 psi | 86% | 3081 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 56,898 psi | 88% | 3054 fps | 99.2% |
| Bofors RP3 | <<locked>> | 82% | 55,883 psi | 86% | 2913 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,775 psi | 72% | 2907 fps | 96.9% |
| Bofors RP5 | <<locked>> | 98% | 58,059 psi | 89% | 3074 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 55,158 psi | 85% | 2910 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,154 psi | 77% | 2933 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 82% | 56,217 psi | 86% | 2936 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 58,015 psi | 89% | 3022 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 86% | 57,043 psi | 88% | 2979 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 96% | 58,436 psi | 90% | 3018 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 96% | 57,290 psi | 88% | 2999 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 57,217 psi | 88% | 2943 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,966 psi | 77% | 3045 fps | 99.1% |
| Hodgdon Superformance | <<locked>> | 86% | 54,520 psi | 84% | 2999 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,796 psi | 57% | 1850 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 57,000 psi | 88% | 2913 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,724 psi | 87% | 2953 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,855 psi | 87% | 2940 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 56,217 psi | 86% | 2956 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,825 psi | 86% | 2943 fps | 97.7% |
| IMR 7828 SSC | <<locked>> | 98% | 56,086 psi | 86% | 3054 fps | 98.3% |
| Lovex S062 | <<locked>> | 82% | 57,130 psi | 88% | 2904 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 57,101 psi | 88% | 2933 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 58,813 psi | 90% | 2982 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,459 psi | 79% | 2881 fps | 99.8% |
| Norma 203B | <<locked>> | 82% | 58,131 psi | 89% | 2963 fps | 100% |
| Norma 204 | <<locked>> | 90% | 57,899 psi | 89% | 3012 fps | 99.1% |
| Norma MRP | <<locked>> | 96% | 57,899 psi | 89% | 3097 fps | 99.9% |
| Norma URP | <<locked>> | 90% | 58,160 psi | 89% | 3002 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 56,884 psi | 88% | 3077 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 90% | 57,101 psi | 88% | 3009 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 55,056 psi | 85% | 3009 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,449 psi | 58% | 1893 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,086 psi | 86% | 2927 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 57,783 psi | 89% | 3028 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 56,014 psi | 86% | 2989 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 58,378 psi | 90% | 3077 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,314 psi | 77% | 3038 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 84% | 56,188 psi | 86% | 2913 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 58,421 psi | 90% | 2992 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 94% | 55,796 psi | 86% | 2995 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 86% | 55,158 psi | 85% | 2910 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 57,101 psi | 88% | 2933 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 57,130 psi | 88% | 2904 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 58,813 psi | 90% | 2982 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 58,102 psi | 89% | 2979 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,478 psi | 87% | 2792 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,666 psi | 87% | 2890 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 55,347 psi | 85% | 2989 fps | 99% |
| Somchem S355 | <<locked>> | 84% | 55,898 psi | 86% | 2910 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 56,246 psi | 87% | 2923 fps | 97.6% |
| Somchem S365 | <<locked>> | 92% | 58,450 psi | 90% | 3005 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 56,159 psi | 86% | 2966 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 86% | 57,479 psi | 88% | 2884 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 56,362 psi | 87% | 2940 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,709 psi | 86% | 2946 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 82% | 58,015 psi | 89% | 2881 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 55,405 psi | 85% | 2946 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 57,537 psi | 89% | 3018 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 57,841 psi | 89% | 3091 fps | 98.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,403 psi | 82% | 2999 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 56,217 psi | 86% | 2904 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 58,015 psi | 89% | 3022 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 56,231 psi | 87% | 3123 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 56,449 psi | 87% | 2966 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 2700 | <<locked>> | 80% | 54,302 psi | 84% | 2864 fps | 99.2% |
| Accurate 3100 | <<locked>> | 80% | 30,966 psi | 48% | 2451 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 54,172 psi | 83% | 2841 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 42,134 psi | 65% | 2726 fps | 99.5% |
| Accurate MAGPRO | <<locked>> | 92% | 49,269 psi | 76% | 2943 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 50,894 psi | 78% | 2828 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 40,640 psi | 63% | 2717 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 90% | 44,367 psi | 68% | 2822 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 98% | 42,438 psi | 65% | 2772 fps | 95% |
| ADI AR 2225 | <<locked>> | 96% | 35,259 psi | 54% | 2657 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,677 psi | 80% | 2848 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,843 psi | 63% | 2743 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,007 psi | 72% | 2864 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 40,567 psi | 62% | 2710 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 86% | 38,377 psi | 59% | 2700 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,008 psi | 46% | 2487 fps | 98.3% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,966 psi | 49% | 2562 fps | 96.1% |
| Alliant Reloder-26 | 72.2 gr | 80% | 32,532 psi | 50% | 2612 fps | 97.1% |
| Bofors RP15 | <<locked>> | 90% | 40,756 psi | 63% | 2753 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 52,460 psi | 81% | 2864 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 40,611 psi | 62% | 2782 fps | 95% |
| Bofors RP5 | <<locked>> | 86% | 38,377 psi | 59% | 2700 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 45,600 psi | 70% | 2743 fps | 98.1% |
| Hodgdon H1000 | <<locked>> | 94% | 40,654 psi | 63% | 2736 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 52,605 psi | 81% | 2881 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 44,237 psi | 68% | 2782 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 80% | 47,050 psi | 72% | 2805 fps | 97.8% |
| Hodgdon H4831 | <<locked>> | 90% | 47,543 psi | 73% | 2835 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 90% | 46,615 psi | 72% | 2815 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,247 psi | 59% | 2625 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 38,058 psi | 59% | 2769 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 43,439 psi | 67% | 2799 fps | 97.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,427 psi | 42% | 1654 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,577 psi | 82% | 2861 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,234 psi | 63% | 2671 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,050 psi | 72% | 2772 fps | 98.7% |
| IMR 4831 | <<locked>> | 80% | 40,379 psi | 62% | 2677 fps | 99.4% |
| IMR 4955 Enduron | <<locked>> | 88% | 46,122 psi | 71% | 2769 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 92% | 45,484 psi | 70% | 2861 fps | 95.9% |
| Lovex S062 | <<locked>> | 80% | 53,722 psi | 83% | 2851 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,512 psi | 68% | 2720 fps | 99.2% |
| Lovex S070 | <<locked>> | 80% | 42,714 psi | 66% | 2700 fps | 98.1% |
| Lovex S071 | <<locked>> | 86% | 32,416 psi | 50% | 2490 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 54,462 psi | 84% | 2907 fps | 100% |
| Norma 204 | <<locked>> | 80% | 40,915 psi | 63% | 2700 fps | 95.6% |
| Norma MRP | 71.8 gr | 82% | 34,983 psi | 54% | 2644 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 41,771 psi | 64% | 2720 fps | 99.4% |
| Ramshot Grand | <<locked>> | 90% | 42,221 psi | 65% | 2802 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 40,625 psi | 63% | 2710 fps | 98.1% |
| Ramshot Magnum | <<locked>> | 90% | 37,565 psi | 58% | 2674 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,065 psi | 43% | 1696 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,388 psi | 81% | 2867 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,937 psi | 77% | 2913 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,134 psi | 65% | 2749 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,669 psi | 63% | 2762 fps | 99.1% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,911 psi | 54% | 2680 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 49,284 psi | 76% | 2808 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,904 psi | 69% | 2753 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 84% | 39,624 psi | 61% | 2690 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 45,600 psi | 70% | 2743 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,512 psi | 68% | 2720 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 53,722 psi | 83% | 2851 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,714 psi | 66% | 2700 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,763 psi | 78% | 2864 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,980 psi | 77% | 2700 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,540 psi | 67% | 2664 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 39,291 psi | 60% | 2684 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 49,400 psi | 76% | 2805 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 46,035 psi | 71% | 2746 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 38,551 psi | 59% | 2677 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 37,507 psi | 58% | 2612 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 47,224 psi | 73% | 2733 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,178 psi | 66% | 2720 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 37,275 psi | 57% | 2598 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 54,404 psi | 84% | 2828 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,569 psi | 65% | 2720 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 80% | 33,489 psi | 52% | 2562 fps | 98.2% |
| Vihtavuori N560 | 78.8 gr | 90% | 46,891 psi | 72% | 2897 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 96% | 46,340 psi | 71% | 2871 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,235 psi | 65% | 2684 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,237 psi | 68% | 2782 fps | 98.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,397 psi | 41% | 2467 fps | 97.7% |
| Winchester Supreme 780 | <<locked>> | 86% | 39,595 psi | 61% | 2657 fps | 95.4% |
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 | 176gr | Peregrine Glider GRM. Winchester StaBALL HD delivers the highest muzzle velocity at 3,123 fps; across all powders the maximum-charge window runs from 1,850 fps to 3,123 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 176.0 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. Alliant Reloder-26, Norma MRP, Vihtavuori N560 rank at the top here: for .300 PRC with the .308 | 176gr | Peregrine Glider GRM 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.