Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 168gr | Reichenberg HDB KUHS bullet and 86 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 2495 | <<locked>> | 82% | 57,261 psi | 90% | 2887 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 55,143 psi | 86% | 2920 fps | 98.9% |
| Accurate 3100 | <<locked>> | 98% | 53,679 psi | 84% | 2963 fps | 99.7% |
| Accurate 4064 | <<locked>> | 82% | 54,273 psi | 85% | 2897 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,709 psi | 87% | 3015 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 56,434 psi | 88% | 3114 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 84% | 54,650 psi | 86% | 2936 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,985 psi | 89% | 3068 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 98% | 54,534 psi | 85% | 3058 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,535 psi | 87% | 2959 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,434 psi | 87% | 2979 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,797 psi | 89% | 3077 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,070 psi | 85% | 3038 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 56,260 psi | 88% | 3051 fps | 98.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 57,508 psi | 90% | 3114 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,534 psi | 85% | 3035 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,065 psi | 74% | 2963 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,868 psi | 86% | 3127 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,736 psi | 83% | 3031 fps | 98% |
| Bofors RP3 | <<locked>> | 84% | 56,202 psi | 88% | 2972 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 57,508 psi | 90% | 3114 fps | 98.8% |
| Bofors RP7 | <<locked>> | 88% | 55,535 psi | 87% | 2963 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 84% | 56,652 psi | 89% | 2995 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,157 psi | 85% | 3012 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 57,348 psi | 90% | 3028 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 96% | 54,491 psi | 85% | 2999 fps | 96.5% |
| Hodgdon H4831 SC | <<locked>> | 98% | 57,305 psi | 90% | 3041 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 56,884 psi | 89% | 2992 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,064 psi | 72% | 2999 fps | 97.4% |
| Hodgdon Superformance | <<locked>> | 88% | 54,607 psi | 86% | 3048 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,405 psi | 57% | 1873 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,537 psi | 90% | 2972 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,391 psi | 88% | 2956 fps | 99.4% |
| IMR 4350 | <<locked>> | 92% | 56,913 psi | 89% | 3002 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 88% | 57,334 psi | 90% | 2992 fps | 99.5% |
| IMR 4831 | <<locked>> | 92% | 56,115 psi | 88% | 3005 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 56,913 psi | 89% | 3009 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 56,173 psi | 88% | 2989 fps | 97% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,695 psi | 87% | 3091 fps | 97.5% |
| Lovex S062 | <<locked>> | 84% | 57,566 psi | 90% | 2959 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,435 psi | 90% | 2986 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 55,390 psi | 87% | 2979 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,645 psi | 75% | 2861 fps | 99% |
| Norma 203B | <<locked>> | 82% | 54,781 psi | 86% | 2963 fps | 100% |
| Norma 204 | <<locked>> | 90% | 54,186 psi | 85% | 2995 fps | 98% |
| Norma MRP | <<locked>> | 98% | 57,421 psi | 90% | 3140 fps | 99.6% |
| Norma URP | <<locked>> | 90% | 54,447 psi | 85% | 2999 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,840 psi | 88% | 2992 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,449 psi | 88% | 3114 fps | 98% |
| Ramshot Hunter | <<locked>> | 92% | 57,058 psi | 89% | 3058 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,430 psi | 79% | 2979 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,188 psi | 58% | 1919 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,434 psi | 88% | 2979 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 57,522 psi | 90% | 3084 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,767 psi | 87% | 3038 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,273 psi | 85% | 3068 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,282 psi | 73% | 2999 fps | 98.5% |
| Rottweil R 902 | <<locked>> | 82% | 55,840 psi | 88% | 2920 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,275 psi | 88% | 2969 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,839 psi | 86% | 2976 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 96% | 55,506 psi | 87% | 3038 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 88% | 55,535 psi | 87% | 2963 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,435 psi | 90% | 2986 fps | 99.9% |
| Shooters World Precision | <<locked>> | 84% | 57,566 psi | 90% | 2959 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,390 psi | 87% | 2979 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,491 psi | 85% | 2979 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 57,188 psi | 90% | 2851 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,971 psi | 89% | 2936 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 55,042 psi | 86% | 3031 fps | 98.5% |
| Somchem S355 | <<locked>> | 86% | 56,304 psi | 88% | 2966 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,594 psi | 89% | 2969 fps | 96.9% |
| Somchem S365 | <<locked>> | 92% | 54,056 psi | 85% | 3002 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,956 psi | 88% | 3009 fps | 99.1% |
| Vihtavuori N135 | <<locked>> | 82% | 56,478 psi | 89% | 2877 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,695 psi | 89% | 2894 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 53,983 psi | 85% | 2887 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,536 psi | 89% | 2995 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,593 psi | 87% | 2989 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 82% | 54,897 psi | 86% | 2890 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,622 psi | 87% | 2999 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 56,681 psi | 89% | 3061 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 57,493 psi | 90% | 3130 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 56,318 psi | 88% | 2959 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,375 psi | 85% | 3015 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,459 psi | 79% | 3104 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,246 psi | 88% | 3005 fps | 98.5% |
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 2495 | <<locked>> | 80% | 53,592 psi | 84% | 2838 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,387 psi | 81% | 2858 fps | 98.3% |
| Accurate 3100 | <<locked>> | 84% | 32,938 psi | 52% | 2546 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 50,865 psi | 80% | 2848 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,117 psi | 61% | 2713 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 96% | 52,344 psi | 82% | 3041 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 48,124 psi | 75% | 2828 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 43,555 psi | 68% | 2818 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 94% | 47,543 psi | 75% | 2927 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,660 psi | 76% | 2851 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,054 psi | 82% | 2923 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,087 psi | 60% | 2726 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,584 psi | 68% | 2858 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 43,134 psi | 68% | 2808 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,843 psi | 64% | 2799 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,775 psi | 44% | 2461 fps | 96.4% |
| Alliant Reloder-25 | <<locked>> | 90% | 33,866 psi | 53% | 2654 fps | 96% |
| Alliant Reloder-26 | 72.1 gr | 82% | 32,184 psi | 50% | 2644 fps | 96% |
| Bofors RP15 | <<locked>> | 94% | 43,047 psi | 67% | 2848 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 49,095 psi | 77% | 2861 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,843 psi | 64% | 2799 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 43,004 psi | 67% | 2730 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 80% | 49,443 psi | 77% | 2877 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 41,263 psi | 65% | 2762 fps | 96.8% |
| Hodgdon H4350 | <<locked>> | 80% | 44,135 psi | 69% | 2789 fps | 96.3% |
| Hodgdon H4831 | <<locked>> | 94% | 50,995 psi | 80% | 2936 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 94% | 49,951 psi | 78% | 2917 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,636 psi | 56% | 2612 fps | 99.1% |
| Hodgdon Retumbo | <<locked>> | 96% | 40,277 psi | 63% | 2861 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 40,263 psi | 63% | 2776 fps | 96.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,166 psi | 43% | 1673 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,618 psi | 79% | 2864 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,779 psi | 83% | 2894 fps | 99% |
| IMR 4350 | <<locked>> | 80% | 38,595 psi | 60% | 2651 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,498 psi | 70% | 2766 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 37,637 psi | 59% | 2664 fps | 98.3% |
| IMR 4895 | <<locked>> | 80% | 53,417 psi | 84% | 2953 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 49,342 psi | 77% | 2871 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 96% | 48,530 psi | 76% | 2963 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 50,734 psi | 80% | 2854 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,901 psi | 66% | 2710 fps | 98.2% |
| Lovex S070 | <<locked>> | 80% | 40,132 psi | 63% | 2690 fps | 96.7% |
| Lovex S071 | <<locked>> | 90% | 34,272 psi | 54% | 2579 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 51,372 psi | 81% | 2910 fps | 100% |
| Norma 204 | <<locked>> | 84% | 43,947 psi | 69% | 2805 fps | 95.6% |
| Norma MRP | 73.4 gr | 86% | 37,289 psi | 58% | 2746 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 38,972 psi | 61% | 2707 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 80% | 52,170 psi | 82% | 2933 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 45,194 psi | 71% | 2904 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 37,782 psi | 59% | 2690 fps | 96.6% |
| Ramshot Magnum | <<locked>> | 94% | 40,161 psi | 63% | 2772 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,775 psi | 44% | 1716 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,400 psi | 77% | 2861 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,340 psi | 73% | 2910 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,030 psi | 61% | 2730 fps | 98.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,869 psi | 59% | 2740 fps | 97.8% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 37,130 psi | 58% | 2772 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 52,591 psi | 82% | 2871 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,224 psi | 72% | 2808 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 48,008 psi | 75% | 2854 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 88% | 42,293 psi | 66% | 2789 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 43,004 psi | 67% | 2730 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,901 psi | 66% | 2710 fps | 98.2% |
| Shooters World Precision | <<locked>> | 80% | 50,734 psi | 80% | 2854 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,132 psi | 63% | 2690 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,572 psi | 75% | 2861 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,253 psi | 74% | 2707 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,930 psi | 64% | 2651 fps | 96.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 41,916 psi | 66% | 2785 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 46,470 psi | 73% | 2805 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 49,414 psi | 77% | 2848 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 35,360 psi | 55% | 2657 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 40,103 psi | 63% | 2713 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 52,910 psi | 83% | 2828 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,229 psi | 83% | 2844 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,440 psi | 70% | 2730 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,364 psi | 63% | 2707 fps | 98.7% |
| Vihtavuori N165 | <<locked>> | 90% | 39,581 psi | 62% | 2694 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 51,372 psi | 81% | 2838 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,726 psi | 62% | 2707 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 80% | 30,777 psi | 48% | 2539 fps | 96.5% |
| Vihtavuori N560 | 80.2 gr | 94% | 49,951 psi | 78% | 2999 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,566 psi | 62% | 2677 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 41,394 psi | 65% | 2766 fps | 96.9% |
| Winchester StaBALL HD | <<locked>> | 82% | 26,150 psi | 41% | 2490 fps | 96.3% |
| Winchester Supreme 780 | <<locked>> | 90% | 42,453 psi | 67% | 2759 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 95 powders for .300 Weath. Mag. loaded with the .308 | 168gr | Reichenberg HDB KUHS. Norma MRP delivers the highest muzzle velocity at 3,140 fps; across all powders the maximum-charge window runs from 1,873 fps to 3,140 fps. ADI AR 2217 gives the best case fill at 100 %, and 95 of the 95 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 168.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-22 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 Weath. Mag. with the .308 | 168gr | Reichenberg HDB KUHS they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Bofors RP30 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.