Load Specifications
Load data in caliber .300 PRC with .308 | 180gr | Alaska Bullet Works Kodiak SP SPBC bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Vihtavuori N560 and Norma MRP.
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>> | 94% | 55,941 psi | 86% | 2920 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 57,232 psi | 88% | 2953 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 58,508 psi | 90% | 3074 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 82% | 57,914 psi | 89% | 2910 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,928 psi | 89% | 3012 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 55,709 psi | 86% | 3012 fps | 98.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,009 psi | 77% | 2907 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,570 psi | 69% | 2864 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 57,972 psi | 89% | 3009 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,419 psi | 85% | 2966 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,305 psi | 88% | 2995 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,796 psi | 86% | 3009 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,956 psi | 88% | 2982 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,449 psi | 87% | 3045 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 57,725 psi | 89% | 3074 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 57,363 psi | 88% | 2972 fps | 96.2% |
| Bofors RP15 | <<locked>> | 98% | 58,378 psi | 90% | 3048 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,243 psi | 80% | 2979 fps | 98.5% |
| Bofors RP5 | <<locked>> | 94% | 55,796 psi | 86% | 3009 fps | 99.4% |
| Bofors RP7 | <<locked>> | 84% | 55,796 psi | 86% | 2900 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,172 psi | 85% | 2999 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 86% | 58,755 psi | 90% | 3005 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 57,624 psi | 89% | 2963 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 55,521 psi | 85% | 2949 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 94% | 58,334 psi | 90% | 2995 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 58,247 psi | 90% | 2930 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,187 psi | 85% | 3114 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 55,463 psi | 85% | 2986 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,144 psi | 57% | 1850 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,377 psi | 88% | 2936 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 57,043 psi | 88% | 2920 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 57,377 psi | 88% | 2943 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,579 psi | 87% | 2933 fps | 98.2% |
| IMR 7828 SSC | <<locked>> | 96% | 57,392 psi | 88% | 3051 fps | 98.9% |
| Lovex S065 | <<locked>> | 86% | 57,769 psi | 89% | 2920 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,115 psi | 86% | 2917 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 57,043 psi | 88% | 2936 fps | 100% |
| Norma 204 | <<locked>> | 88% | 58,494 psi | 90% | 2995 fps | 99.4% |
| Norma 217ᴾ | <<locked>> | 100% | 40,234 psi | 62% | 2785 fps | 97.6% |
| Norma MRP | <<locked>> | 92% | 55,564 psi | 85% | 3031 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 55,564 psi | 85% | 2936 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 58,465 psi | 90% | 3077 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 88% | 57,957 psi | 89% | 2995 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 56,608 psi | 87% | 3005 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,029 psi | 59% | 1896 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 57,246 psi | 88% | 2976 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,492 psi | 85% | 3002 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 56,130 psi | 86% | 3114 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 50,966 psi | 78% | 2989 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 82% | 57,174 psi | 88% | 2897 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 55,477 psi | 85% | 2923 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 92% | 56,884 psi | 88% | 2986 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 84% | 55,796 psi | 86% | 2900 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,769 psi | 89% | 2920 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,115 psi | 86% | 2917 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 58,639 psi | 90% | 2956 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,840 psi | 87% | 2769 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,029 psi | 88% | 2874 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,478 psi | 87% | 2982 fps | 99.4% |
| Somchem S355 | <<locked>> | 82% | 56,710 psi | 87% | 2890 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,956 psi | 88% | 2913 fps | 98.1% |
| Somchem S365 | <<locked>> | 88% | 55,970 psi | 86% | 2936 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 57,421 psi | 88% | 2959 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 57,943 psi | 89% | 2861 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 57,305 psi | 88% | 2927 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,927 psi | 88% | 2936 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 56,405 psi | 87% | 2930 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 55,709 psi | 86% | 2959 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,347 psi | 85% | 3025 fps | 98.1% |
| Vihtavuori N565 | <<locked>> | 98% | 55,288 psi | 85% | 3002 fps | 98.3% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 51,996 psi | 80% | 2995 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,797 psi | 87% | 2884 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,201 psi | 85% | 2949 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 54,897 psi | 84% | 3064 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 57,566 psi | 89% | 2956 fps | 99.4% |
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% | 34,809 psi | 54% | 2520 fps | 97% |
| Accurate 4350 | <<locked>> | 80% | 46,601 psi | 72% | 2782 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 47,311 psi | 73% | 2877 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 54,433 psi | 84% | 2858 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,754 psi | 60% | 2648 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 86% | 42,453 psi | 65% | 2759 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 94% | 40,915 psi | 63% | 2720 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 92% | 34,418 psi | 53% | 2615 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,599 psi | 69% | 2789 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,488 psi | 79% | 2907 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,856 psi | 60% | 2644 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 82% | 37,231 psi | 57% | 2644 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,431 psi | 51% | 2549 fps | 99.5% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,051 psi | 45% | 2448 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,651 psi | 56% | 2687 fps | 98.9% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 53,809 psi | 83% | 2910 fps | 95.4% |
| Bofors RP15 | <<locked>> | 86% | 39,552 psi | 61% | 2697 fps | 95.9% |
| Bofors RP30 | <<locked>> | 92% | 39,726 psi | 61% | 2730 fps | 95.2% |
| Bofors RP5 | <<locked>> | 82% | 37,231 psi | 57% | 2644 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 49,124 psi | 76% | 2785 fps | 99% |
| Hodgdon H1000 | <<locked>> | 90% | 39,073 psi | 60% | 2680 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 48,312 psi | 74% | 2835 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 50,749 psi | 78% | 2848 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 86% | 45,382 psi | 70% | 2766 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 86% | 44,541 psi | 69% | 2749 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,047 psi | 65% | 2671 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 36,912 psi | 57% | 2717 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 47,805 psi | 74% | 2854 fps | 99% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,833 psi | 43% | 1654 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,512 psi | 68% | 2713 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,531 psi | 78% | 2812 fps | 99.4% |
| IMR 4831 | <<locked>> | 80% | 44,367 psi | 68% | 2726 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 43,976 psi | 68% | 2703 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 88% | 43,743 psi | 67% | 2802 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 48,109 psi | 74% | 2762 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 46,485 psi | 72% | 2753 fps | 99.1% |
| Lovex S071 | <<locked>> | 80% | 30,008 psi | 46% | 2395 fps | 95% |
| Norma 204 | <<locked>> | 80% | 44,643 psi | 69% | 2753 fps | 97.2% |
| Norma 217 | <<locked>> | 96% | 35,259 psi | 54% | 2664 fps | 95.7% |
| Norma MRP | 73.1 gr | 80% | 36,361 psi | 56% | 2651 fps | 96.4% |
| Norma URP | <<locked>> | 80% | 45,716 psi | 70% | 2769 fps | 99.9% |
| Ramshot Grand | <<locked>> | 86% | 40,596 psi | 62% | 2743 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 44,498 psi | 68% | 2762 fps | 99.2% |
| Ramshot Magnum | <<locked>> | 86% | 36,172 psi | 56% | 2615 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,514 psi | 44% | 1696 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,615 psi | 72% | 2802 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,759 psi | 69% | 2822 fps | 99.8% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 33,750 psi | 52% | 2625 fps | 95.4% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 47,253 psi | 73% | 2920 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 53,679 psi | 83% | 2848 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 42,931 psi | 66% | 2690 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 80% | 38,218 psi | 59% | 2631 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 49,124 psi | 76% | 2785 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,109 psi | 74% | 2762 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 46,485 psi | 72% | 2753 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 54,940 psi | 85% | 2904 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,388 psi | 82% | 2720 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,108 psi | 72% | 2710 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,884 psi | 58% | 2625 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 53,287 psi | 82% | 2838 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 43,801 psi | 67% | 2680 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 42,641 psi | 66% | 2723 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,812 psi | 60% | 2615 fps | 96.7% |
| Vihtavuori N150 | <<locked>> | 80% | 51,111 psi | 79% | 2762 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,050 psi | 72% | 2762 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 35,955 psi | 55% | 2543 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 46,369 psi | 71% | 2766 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 37,594 psi | 58% | 2628 fps | 99.4% |
| Vihtavuori N560 | 78.5 gr | 86% | 44,918 psi | 69% | 2828 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 90% | 42,119 psi | 65% | 2753 fps | 95.1% |
| Vihtavuori N568 | <<locked>> | 98% | 48,443 psi | 75% | 2927 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,282 psi | 71% | 2723 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,312 psi | 74% | 2835 fps | 99.3% |
| Winchester StaBALL HD | 72.3 gr | 80% | 29,718 psi | 46% | 2559 fps | 99.6% |
| Winchester Supreme 780 | <<locked>> | 82% | 37,927 psi | 58% | 2595 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 80 powders for .300 PRC loaded with the .308 | 180gr | Alaska Bullet Works Kodiak SP SPBC. Hodgdon Retumbo delivers the highest muzzle velocity at 3,114 fps; across all powders the maximum-charge window runs from 1,850 fps to 3,114 fps. ADI AR 2217 gives the best case fill at 100 %, and 80 of the 80 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 180.0 gr projectile in 0.308" calls for a 1:13.0 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. Winchester StaBALL HD, Vihtavuori N560, Norma MRP rank at the top here: for .300 PRC with the .308 | 180gr | Alaska Bullet Works Kodiak SP SPBC 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.