Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 168gr | Reichenberg HDB Universal bullet and 87 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% | 57,130 psi | 90% | 2887 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 55,027 psi | 86% | 2917 fps | 98.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 57,638 psi | 90% | 3022 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 54,128 psi | 85% | 2897 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,579 psi | 87% | 3012 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 56,333 psi | 88% | 3114 fps | 96.5% |
| ADI AR 2208 | <<locked>> | 84% | 54,534 psi | 85% | 2936 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,884 psi | 89% | 3068 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 98% | 54,462 psi | 85% | 3058 fps | 97.1% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 56,927 psi | 89% | 3061 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,390 psi | 87% | 2956 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,564 psi | 87% | 2979 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,666 psi | 89% | 3074 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,230 psi | 85% | 3038 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 56,159 psi | 88% | 3048 fps | 98.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 57,406 psi | 90% | 3110 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,447 psi | 85% | 3035 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,978 psi | 74% | 2959 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,766 psi | 86% | 3123 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,663 psi | 83% | 3031 fps | 98% |
| Bofors RP3 | <<locked>> | 84% | 56,086 psi | 88% | 2972 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 57,406 psi | 90% | 3110 fps | 98.8% |
| Bofors RP7 | <<locked>> | 88% | 55,419 psi | 87% | 2963 fps | 99% |
| Hodgdon H380 | <<locked>> | 84% | 56,579 psi | 89% | 2992 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,070 psi | 85% | 3009 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 57,232 psi | 90% | 3028 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 96% | 54,665 psi | 86% | 2999 fps | 96.5% |
| Hodgdon H4831 SC | <<locked>> | 98% | 57,203 psi | 90% | 3041 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 56,985 psi | 89% | 2995 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,977 psi | 72% | 2999 fps | 97.4% |
| Hodgdon Superformance | <<locked>> | 88% | 54,505 psi | 85% | 3045 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,448 psi | 57% | 1873 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,421 psi | 90% | 2969 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,275 psi | 88% | 2953 fps | 99.4% |
| IMR 4350 | <<locked>> | 92% | 56,811 psi | 89% | 2999 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 88% | 57,232 psi | 90% | 2989 fps | 99.5% |
| IMR 4831 | <<locked>> | 92% | 55,999 psi | 88% | 3002 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 57,014 psi | 89% | 3009 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 56,072 psi | 88% | 2989 fps | 97% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,651 psi | 87% | 3091 fps | 97.5% |
| Lovex S062 | <<locked>> | 84% | 57,479 psi | 90% | 2959 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,319 psi | 90% | 2986 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 55,274 psi | 87% | 2976 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,529 psi | 74% | 2861 fps | 99% |
| Norma 203B | <<locked>> | 82% | 54,868 psi | 86% | 2966 fps | 100% |
| Norma 204 | <<locked>> | 90% | 54,099 psi | 85% | 2992 fps | 98% |
| Norma MRP | <<locked>> | 98% | 57,305 psi | 90% | 3140 fps | 99.6% |
| Norma URP | <<locked>> | 90% | 54,317 psi | 85% | 2995 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,709 psi | 87% | 2992 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,347 psi | 88% | 3114 fps | 98% |
| Ramshot Hunter | <<locked>> | 92% | 56,956 psi | 89% | 3054 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,372 psi | 79% | 2976 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,072 psi | 58% | 1916 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,536 psi | 89% | 2979 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 57,653 psi | 90% | 3087 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,651 psi | 87% | 3038 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,172 psi | 85% | 3064 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,209 psi | 72% | 2995 fps | 98.5% |
| Rottweil R 902 | <<locked>> | 82% | 55,941 psi | 88% | 2920 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,391 psi | 88% | 2969 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,737 psi | 86% | 2976 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 96% | 55,405 psi | 87% | 3035 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 55,419 psi | 87% | 2963 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,319 psi | 90% | 2986 fps | 99.9% |
| Shooters World Precision | <<locked>> | 84% | 57,479 psi | 90% | 2959 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,274 psi | 87% | 2976 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,375 psi | 85% | 2976 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 57,058 psi | 89% | 2848 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 57,130 psi | 90% | 2940 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,940 psi | 86% | 3031 fps | 98.5% |
| Somchem S355 | <<locked>> | 86% | 56,173 psi | 88% | 2966 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,507 psi | 89% | 2969 fps | 96.8% |
| Somchem S365 | <<locked>> | 94% | 57,696 psi | 90% | 3051 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,840 psi | 88% | 3009 fps | 99.1% |
| Vihtavuori N135 | <<locked>> | 82% | 56,376 psi | 88% | 2874 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,608 psi | 89% | 2890 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 57,696 psi | 90% | 2940 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,420 psi | 88% | 2992 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,492 psi | 87% | 2986 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 82% | 54,781 psi | 86% | 2887 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,506 psi | 87% | 2995 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 56,797 psi | 89% | 3061 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 57,450 psi | 90% | 3133 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 56,217 psi | 88% | 2956 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,288 psi | 85% | 3012 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,401 psi | 79% | 3100 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,376 psi | 88% | 3009 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% | 53,490 psi | 84% | 2838 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,488 psi | 81% | 2861 fps | 98.3% |
| Accurate 3100 | <<locked>> | 86% | 35,230 psi | 55% | 2602 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 50,734 psi | 80% | 2844 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,015 psi | 61% | 2710 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 96% | 52,243 psi | 82% | 3041 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 48,008 psi | 75% | 2825 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 43,453 psi | 68% | 2818 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 94% | 47,442 psi | 74% | 2923 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 43,700 psi | 68% | 2815 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,747 psi | 76% | 2851 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,924 psi | 81% | 2923 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,000 psi | 60% | 2723 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,468 psi | 68% | 2854 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 43,221 psi | 68% | 2808 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,785 psi | 64% | 2799 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,717 psi | 43% | 2457 fps | 96.4% |
| Alliant Reloder-25 | <<locked>> | 90% | 33,779 psi | 53% | 2648 fps | 95.9% |
| Alliant Reloder-26 | 72 gr | 82% | 32,082 psi | 50% | 2641 fps | 96% |
| Bofors RP15 | <<locked>> | 94% | 42,960 psi | 67% | 2844 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 48,979 psi | 77% | 2858 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,785 psi | 64% | 2799 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 42,931 psi | 67% | 2730 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 80% | 49,342 psi | 77% | 2874 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 41,147 psi | 64% | 2762 fps | 96.8% |
| Hodgdon H4350 | <<locked>> | 80% | 44,048 psi | 69% | 2785 fps | 96.3% |
| Hodgdon H4831 | <<locked>> | 94% | 50,894 psi | 80% | 2936 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 94% | 49,850 psi | 78% | 2917 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,563 psi | 56% | 2612 fps | 99.1% |
| Hodgdon Retumbo | <<locked>> | 96% | 40,190 psi | 63% | 2858 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 40,190 psi | 63% | 2772 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,195 psi | 43% | 1673 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,517 psi | 79% | 2861 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,866 psi | 83% | 2897 fps | 99.1% |
| IMR 4350 | <<locked>> | 80% | 38,682 psi | 61% | 2654 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,396 psi | 70% | 2759 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 37,536 psi | 59% | 2661 fps | 98.3% |
| IMR 4895 | <<locked>> | 80% | 53,272 psi | 83% | 2949 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 49,255 psi | 77% | 2871 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 96% | 48,428 psi | 76% | 2959 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 50,821 psi | 80% | 2858 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,829 psi | 66% | 2707 fps | 98.1% |
| Lovex S070 | <<locked>> | 80% | 40,059 psi | 63% | 2687 fps | 96.7% |
| Lovex S071 | <<locked>> | 90% | 34,171 psi | 54% | 2575 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 51,271 psi | 80% | 2907 fps | 100% |
| Norma 204 | <<locked>> | 84% | 43,859 psi | 69% | 2802 fps | 95.6% |
| Norma MRP | 73.3 gr | 86% | 37,231 psi | 58% | 2743 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 38,856 psi | 61% | 2703 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 80% | 52,098 psi | 82% | 2933 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 45,107 psi | 71% | 2904 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 37,840 psi | 59% | 2694 fps | 96.6% |
| Ramshot Magnum | <<locked>> | 94% | 40,074 psi | 63% | 2769 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,659 psi | 43% | 1713 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,487 psi | 78% | 2861 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,238 psi | 72% | 2910 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,102 psi | 61% | 2730 fps | 98.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,811 psi | 59% | 2740 fps | 97.8% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 37,057 psi | 58% | 2772 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 52,475 psi | 82% | 2867 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,108 psi | 72% | 2805 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 48,095 psi | 75% | 2858 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 88% | 42,177 psi | 66% | 2789 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 42,931 psi | 67% | 2730 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,829 psi | 66% | 2707 fps | 98.1% |
| Shooters World Precision | <<locked>> | 80% | 50,821 psi | 80% | 2858 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,059 psi | 63% | 2687 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,659 psi | 75% | 2864 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,326 psi | 74% | 2710 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,988 psi | 64% | 2651 fps | 96.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 41,800 psi | 66% | 2782 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 46,369 psi | 73% | 2802 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 49,327 psi | 77% | 2844 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 35,433 psi | 56% | 2657 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 40,030 psi | 63% | 2710 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 52,997 psi | 83% | 2828 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,098 psi | 83% | 2844 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,309 psi | 69% | 2730 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,292 psi | 63% | 2707 fps | 98.7% |
| Vihtavuori N165 | <<locked>> | 90% | 39,537 psi | 62% | 2694 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 51,271 psi | 80% | 2835 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,639 psi | 62% | 2703 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 80% | 30,835 psi | 48% | 2539 fps | 96.5% |
| Vihtavuori N560 | 80.1 gr | 94% | 49,850 psi | 78% | 2995 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,479 psi | 62% | 2674 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 41,336 psi | 65% | 2766 fps | 96.8% |
| Winchester StaBALL HD | <<locked>> | 82% | 26,092 psi | 41% | 2487 fps | 96.3% |
| Winchester Supreme 780 | <<locked>> | 90% | 42,395 psi | 66% | 2756 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 87 powders for .300 Weath. Mag. loaded with the .308 | 168gr | Reichenberg HDB Universal. 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. Accurate 3100 gives the best case fill at 100 %, and 87 of the 87 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, 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. Accurate 3100, Alliant Reloder-22, Alliant Reloder-23 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 Universal 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.