Load Specifications
Load data in caliber .300 PRC with .308 | 168gr | Barnes TAC-X bullet and 82 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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 82% | 58,262 psi | 90% | 2992 fps | 99.5% |
| Accurate 3100 | <<locked>> | 98% | 58,204 psi | 90% | 3048 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 57,856 psi | 89% | 2963 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 55,898 psi | 86% | 3031 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 57,014 psi | 88% | 3143 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 84% | 57,638 psi | 89% | 3002 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 57,174 psi | 88% | 3091 fps | 99% |
| ADI AR 2213 | <<locked>> | 98% | 58,624 psi | 90% | 3150 fps | 98.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,335 psi | 62% | 2844 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 58,726 psi | 90% | 3025 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 57,029 psi | 88% | 3094 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 58,407 psi | 90% | 3110 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 56,449 psi | 87% | 3074 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 98% | 58,218 psi | 90% | 3140 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 55,492 psi | 85% | 3061 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,169 psi | 79% | 3054 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 55,970 psi | 86% | 3150 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 57,058 psi | 88% | 3123 fps | 99% |
| Bofors RP3 | <<locked>> | 82% | 56,115 psi | 86% | 2989 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,079 psi | 72% | 2972 fps | 96.6% |
| Bofors RP5 | <<locked>> | 98% | 58,218 psi | 90% | 3140 fps | 99.2% |
| Bofors RP7 | <<locked>> | 86% | 55,303 psi | 85% | 2979 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,415 psi | 78% | 2999 fps | 97.7% |
| Hodgdon H380 | <<locked>> | 82% | 56,405 psi | 87% | 3009 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 58,044 psi | 89% | 3091 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 86% | 57,246 psi | 88% | 3048 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 96% | 58,697 psi | 90% | 3087 fps | 97.8% |
| Hodgdon H4831 SC | <<locked>> | 96% | 57,566 psi | 89% | 3071 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 57,290 psi | 88% | 3015 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,053 psi | 77% | 3107 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 86% | 54,679 psi | 84% | 3064 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,738 psi | 57% | 1906 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,971 psi | 88% | 2982 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,797 psi | 87% | 3018 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,956 psi | 88% | 3009 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 56,289 psi | 87% | 3025 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,072 psi | 86% | 3012 fps | 97.5% |
| IMR 7828 SSC | <<locked>> | 98% | 56,275 psi | 87% | 3123 fps | 98.1% |
| Lovex S062 | <<locked>> | 82% | 57,319 psi | 88% | 2972 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 57,334 psi | 88% | 3005 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 55,317 psi | 85% | 2995 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,677 psi | 80% | 2946 fps | 99.7% |
| Norma 203B | <<locked>> | 82% | 58,189 psi | 90% | 3031 fps | 100% |
| Norma 204 | <<locked>> | 90% | 57,972 psi | 89% | 3077 fps | 98.9% |
| Norma MRP | <<locked>> | 96% | 58,233 psi | 90% | 3166 fps | 99.8% |
| Norma URP | <<locked>> | 90% | 58,291 psi | 90% | 3074 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 57,072 psi | 88% | 3146 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 90% | 57,188 psi | 88% | 3077 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 55,274 psi | 85% | 3077 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,521 psi | 58% | 1952 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,159 psi | 86% | 2992 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 57,972 psi | 89% | 3100 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 56,159 psi | 86% | 3058 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 58,755 psi | 90% | 3150 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,647 psi | 78% | 3107 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 84% | 56,217 psi | 86% | 2986 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 58,508 psi | 90% | 3058 fps | 98.3% |
| Rottweil R 905 | <<locked>> | 94% | 55,869 psi | 86% | 3061 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 86% | 55,303 psi | 85% | 2979 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 57,334 psi | 88% | 3005 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 57,319 psi | 88% | 2972 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,317 psi | 85% | 2995 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 58,102 psi | 89% | 3048 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,710 psi | 87% | 2864 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,739 psi | 87% | 2956 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 55,419 psi | 85% | 3058 fps | 98.9% |
| Somchem S355 | <<locked>> | 84% | 56,173 psi | 86% | 2982 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 56,449 psi | 87% | 2992 fps | 97.4% |
| Somchem S365 | <<locked>> | 92% | 58,639 psi | 90% | 3077 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 56,333 psi | 87% | 3035 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 86% | 57,537 psi | 89% | 2956 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 56,492 psi | 87% | 3012 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,927 psi | 86% | 3012 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 82% | 58,204 psi | 90% | 2953 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 55,666 psi | 86% | 3015 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 57,522 psi | 88% | 3084 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 58,175 psi | 89% | 3159 fps | 97.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,606 psi | 82% | 3064 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 56,188 psi | 86% | 2969 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 58,247 psi | 90% | 3094 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 56,724 psi | 87% | 3199 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 56,652 psi | 87% | 3031 fps | 98.9% |
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% | 54,491 psi | 84% | 2933 fps | 99.1% |
| Accurate 3100 | <<locked>> | 82% | 33,301 psi | 51% | 2566 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 54,027 psi | 83% | 2907 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 42,279 psi | 65% | 2792 fps | 99.4% |
| Accurate MAGPRO | <<locked>> | 92% | 49,298 psi | 76% | 3002 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 50,821 psi | 78% | 2894 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 40,640 psi | 63% | 2776 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 90% | 44,498 psi | 68% | 2884 fps | 95% |
| ADI AR 2225 | <<locked>> | 96% | 35,317 psi | 54% | 2710 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,735 psi | 80% | 2917 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,756 psi | 63% | 2802 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,152 psi | 73% | 2933 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 40,553 psi | 62% | 2769 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 88% | 41,234 psi | 63% | 2822 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,921 psi | 46% | 2536 fps | 97.9% |
| Alliant Reloder-25 | <<locked>> | 86% | 32,010 psi | 49% | 2615 fps | 95.6% |
| Alliant Reloder-26 | 74.8 gr | 80% | 32,547 psi | 50% | 2664 fps | 96.7% |
| Bofors RP15 | <<locked>> | 90% | 40,828 psi | 63% | 2808 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 52,373 psi | 81% | 2930 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 43,801 psi | 67% | 2907 fps | 95.7% |
| Bofors RP5 | <<locked>> | 88% | 41,234 psi | 63% | 2822 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 45,643 psi | 70% | 2805 fps | 97.8% |
| Hodgdon H1000 | <<locked>> | 96% | 43,830 psi | 67% | 2864 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 52,678 psi | 81% | 2949 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 44,280 psi | 68% | 2844 fps | 98% |
| Hodgdon H4350 | <<locked>> | 80% | 46,978 psi | 72% | 2867 fps | 97.5% |
| Hodgdon H4831 | <<locked>> | 90% | 47,688 psi | 73% | 2897 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 90% | 46,746 psi | 72% | 2877 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,348 psi | 59% | 2684 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 94% | 40,872 psi | 63% | 2897 fps | 96.2% |
| Hodgdon Superformance | <<locked>> | 80% | 43,540 psi | 67% | 2858 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,369 psi | 42% | 1703 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,447 psi | 82% | 2930 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,220 psi | 63% | 2730 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,065 psi | 72% | 2835 fps | 98.4% |
| IMR 4831 | <<locked>> | 80% | 40,393 psi | 62% | 2736 fps | 99.2% |
| IMR 4955 Enduron | <<locked>> | 88% | 46,267 psi | 71% | 2835 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 92% | 45,614 psi | 70% | 2923 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 53,809 psi | 83% | 2920 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,396 psi | 68% | 2779 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 42,728 psi | 66% | 2762 fps | 97.8% |
| Lovex S071 | <<locked>> | 86% | 32,503 psi | 50% | 2543 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 54,607 psi | 84% | 2979 fps | 100% |
| Norma 204 | <<locked>> | 80% | 40,930 psi | 63% | 2759 fps | 95.2% |
| Norma MRP | 76.2 gr | 84% | 37,652 psi | 58% | 2766 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 41,785 psi | 64% | 2782 fps | 99.3% |
| Ramshot Grand | <<locked>> | 92% | 45,672 psi | 70% | 2936 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 40,640 psi | 63% | 2772 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 90% | 37,710 psi | 58% | 2730 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,992 psi | 43% | 1745 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,547 psi | 81% | 2936 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,140 psi | 77% | 2986 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,279 psi | 65% | 2812 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,741 psi | 63% | 2825 fps | 98.9% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 37,623 psi | 58% | 2808 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 80% | 49,298 psi | 76% | 2874 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 45,005 psi | 69% | 2815 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 84% | 39,784 psi | 61% | 2749 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 45,643 psi | 70% | 2805 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,396 psi | 68% | 2779 fps | 99% |
| Shooters World Precision | <<locked>> | 80% | 53,809 psi | 83% | 2920 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,728 psi | 66% | 2762 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,807 psi | 78% | 2933 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,995 psi | 77% | 2766 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,511 psi | 67% | 2723 fps | 97.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 39,421 psi | 61% | 2746 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 49,269 psi | 76% | 2871 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 49,298 psi | 76% | 2867 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 38,537 psi | 59% | 2736 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 37,681 psi | 58% | 2671 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 47,239 psi | 73% | 2795 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,308 psi | 67% | 2782 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 88% | 39,871 psi | 61% | 2713 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 54,491 psi | 84% | 2900 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,641 psi | 66% | 2782 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 33,533 psi | 52% | 2618 fps | 97.9% |
| Vihtavuori N560 | 81.7 gr | 90% | 47,108 psi | 72% | 2959 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 96% | 46,514 psi | 72% | 2933 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,467 psi | 65% | 2746 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,469 psi | 68% | 2848 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,440 psi | 41% | 2516 fps | 97.2% |
| Winchester Supreme 780 | <<locked>> | 86% | 39,697 psi | 61% | 2717 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 | 168gr | Barnes TAC-X. Winchester StaBALL HD delivers the highest muzzle velocity at 3,199 fps; across all powders the maximum-charge window runs from 1,906 fps to 3,199 fps. ADI AR 2217 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 55–90 %, leaving at least 10 % headroom. The 168.0 gr projectile in 0.308" calls for a 1:12.0 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 | 168gr | Barnes TAC-X they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 8133 Enduron, Norma 217, ReloadSwiss RS 80 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.