Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 168gr | Berger VLD Hunting bullet and 86 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and Alliant Reloder-26.
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% | 56,101 psi | 88% | 2927 fps | 99% |
| Accurate 3100 | <<locked>> | 98% | 55,158 psi | 86% | 2979 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 55,753 psi | 87% | 2910 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 57,101 psi | 89% | 3028 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 57,450 psi | 90% | 3127 fps | 96.7% |
| ADI AR 2208 | <<locked>> | 84% | 55,463 psi | 87% | 2946 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 57,711 psi | 90% | 3074 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 98% | 55,550 psi | 87% | 3071 fps | 97.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 56,492 psi | 89% | 2969 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 56,666 psi | 89% | 2992 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 57,740 psi | 90% | 3087 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 55,143 psi | 86% | 3048 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 57,290 psi | 90% | 3064 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,969 psi | 86% | 3068 fps | 98.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 55,738 psi | 87% | 3051 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,167 psi | 75% | 2979 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 55,985 psi | 88% | 3136 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,693 psi | 84% | 3045 fps | 98.2% |
| Bofors RP3 | <<locked>> | 84% | 57,421 psi | 90% | 2986 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 54,969 psi | 86% | 3068 fps | 98.5% |
| Bofors RP7 | <<locked>> | 88% | 56,536 psi | 89% | 2972 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,587 psi | 75% | 2913 fps | 96.3% |
| Hodgdon H380 | <<locked>> | 82% | 54,041 psi | 85% | 2946 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 55,216 psi | 87% | 3022 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 86% | 54,752 psi | 86% | 2979 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 96% | 55,550 psi | 87% | 3009 fps | 96.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,389 psi | 85% | 2992 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,491 psi | 85% | 2953 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,166 psi | 74% | 3018 fps | 97.7% |
| Hodgdon Superformance | <<locked>> | 88% | 55,477 psi | 87% | 3058 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,709 psi | 58% | 1877 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 54,824 psi | 86% | 2923 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 57,203 psi | 90% | 2963 fps | 99.5% |
| IMR 4350 | <<locked>> | 90% | 54,375 psi | 85% | 2956 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,723 psi | 86% | 2946 fps | 99.2% |
| IMR 4831 | <<locked>> | 92% | 57,276 psi | 90% | 3018 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 56,826 psi | 89% | 2995 fps | 97.1% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 56,768 psi | 89% | 3104 fps | 97.7% |
| Lovex S062 | <<locked>> | 82% | 55,100 psi | 86% | 2917 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,027 psi | 86% | 2943 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 56,478 psi | 89% | 2989 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,066 psi | 77% | 2881 fps | 99.2% |
| Norma 203B | <<locked>> | 82% | 55,956 psi | 88% | 2976 fps | 100% |
| Norma 204 | <<locked>> | 90% | 55,187 psi | 86% | 3009 fps | 98.2% |
| Norma MRP | <<locked>> | 96% | 54,636 psi | 86% | 3094 fps | 99.4% |
| Norma URP | <<locked>> | 90% | 55,492 psi | 87% | 3009 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 56,782 psi | 89% | 3002 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 57,638 psi | 90% | 3127 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 90% | 54,375 psi | 85% | 3012 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,430 psi | 81% | 2989 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,376 psi | 59% | 1919 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 57,392 psi | 90% | 2986 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,534 psi | 85% | 3038 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 56,942 psi | 89% | 3051 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 55,332 psi | 87% | 3077 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,311 psi | 74% | 3015 fps | 98.7% |
| Rottweil R 902 | <<locked>> | 82% | 57,101 psi | 89% | 2930 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 57,740 psi | 90% | 2982 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 55,782 psi | 87% | 2986 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 96% | 56,637 psi | 89% | 3051 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 88% | 56,536 psi | 89% | 2972 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,027 psi | 86% | 2943 fps | 99.8% |
| Shooters World Precision | <<locked>> | 82% | 55,100 psi | 86% | 2917 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 56,478 psi | 89% | 2989 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 55,477 psi | 87% | 2989 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,650 psi | 86% | 2812 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,476 psi | 85% | 2894 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 56,159 psi | 88% | 3045 fps | 98.6% |
| Somchem S355 | <<locked>> | 86% | 57,377 psi | 90% | 2976 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 57,450 psi | 90% | 2976 fps | 97% |
| Somchem S365 | <<locked>> | 92% | 55,274 psi | 87% | 3012 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 57,159 psi | 90% | 3022 fps | 99.2% |
| Vihtavuori N135 | <<locked>> | 82% | 57,537 psi | 90% | 2884 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 57,609 psi | 90% | 2900 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 55,245 psi | 87% | 2900 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 57,595 psi | 90% | 3005 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 56,478 psi | 89% | 2995 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 82% | 55,883 psi | 88% | 2897 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 56,710 psi | 89% | 3009 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 54,404 psi | 85% | 3022 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 54,752 psi | 86% | 3081 fps | 96.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,227 psi | 79% | 2982 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 57,290 psi | 90% | 2966 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,434 psi | 87% | 3025 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,822 psi | 81% | 3120 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 57,334 psi | 90% | 3018 fps | 98.6% |
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% | 52,518 psi | 82% | 2871 fps | 98.5% |
| Accurate 3100 | <<locked>> | 84% | 34,272 psi | 54% | 2572 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 52,359 psi | 82% | 2861 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,422 psi | 63% | 2733 fps | 98.8% |
| Accurate MAGPRO | <<locked>> | 96% | 53,563 psi | 84% | 3061 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 48,950 psi | 77% | 2835 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 41,539 psi | 65% | 2769 fps | 95% |
| ADI AR 2213 | <<locked>> | 94% | 48,501 psi | 76% | 2940 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,850 psi | 78% | 2864 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,040 psi | 83% | 2933 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,986 psi | 61% | 2740 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,585 psi | 70% | 2871 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 41,336 psi | 65% | 2762 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 90% | 41,930 psi | 66% | 2818 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,805 psi | 45% | 2484 fps | 97% |
| Alliant Reloder-25 | <<locked>> | 88% | 32,750 psi | 51% | 2612 fps | 95.4% |
| Alliant Reloder-26 | 70.1 gr | 80% | 30,937 psi | 48% | 2598 fps | 95.4% |
| Bofors RP15 | <<locked>> | 92% | 41,365 psi | 65% | 2805 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 50,314 psi | 79% | 2874 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 41,930 psi | 66% | 2818 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 43,961 psi | 69% | 2743 fps | 96.9% |
| Hodgdon H1000 | <<locked>> | 98% | 44,541 psi | 70% | 2851 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 50,502 psi | 79% | 2887 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 42,250 psi | 66% | 2779 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 80% | 45,020 psi | 71% | 2799 fps | 96.5% |
| Hodgdon H4831 | <<locked>> | 94% | 52,011 psi | 82% | 2949 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 94% | 50,937 psi | 80% | 2930 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,637 psi | 57% | 2628 fps | 99.3% |
| Hodgdon Retumbo | <<locked>> | 96% | 41,350 psi | 65% | 2884 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 41,278 psi | 65% | 2792 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,441 psi | 43% | 1677 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,503 psi | 81% | 2871 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 53,766 psi | 84% | 2907 fps | 99.2% |
| IMR 4350 | <<locked>> | 80% | 39,653 psi | 62% | 2671 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,310 psi | 71% | 2772 fps | 97.7% |
| IMR 4831 | <<locked>> | 80% | 38,725 psi | 61% | 2680 fps | 98.6% |
| IMR 4955 Enduron | <<locked>> | 92% | 50,227 psi | 79% | 2884 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 94% | 46,383 psi | 73% | 2910 fps | 95.1% |
| Lovex S062 | <<locked>> | 80% | 51,953 psi | 81% | 2867 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,960 psi | 67% | 2723 fps | 98.4% |
| Lovex S070 | <<locked>> | 80% | 41,205 psi | 65% | 2703 fps | 97% |
| Lovex S071 | <<locked>> | 88% | 33,286 psi | 52% | 2546 fps | 95.1% |
| Norma 203B | <<locked>> | 80% | 52,402 psi | 82% | 2920 fps | 100% |
| Norma 204 | <<locked>> | 82% | 41,901 psi | 66% | 2756 fps | 95% |
| Norma MRP | 73.2 gr | 86% | 38,406 psi | 60% | 2766 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 39,972 psi | 63% | 2723 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 80% | 53,156 psi | 83% | 2946 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 46,296 psi | 73% | 2923 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 38,914 psi | 61% | 2710 fps | 97% |
| Ramshot Magnum | <<locked>> | 94% | 41,307 psi | 65% | 2792 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,963 psi | 44% | 1716 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,343 psi | 79% | 2871 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,311 psi | 74% | 2923 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,190 psi | 63% | 2749 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,841 psi | 61% | 2756 fps | 98.1% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 38,290 psi | 60% | 2799 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 53,679 psi | 84% | 2881 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,398 psi | 74% | 2822 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 45,905 psi | 72% | 2808 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 86% | 40,582 psi | 64% | 2749 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 43,961 psi | 69% | 2743 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,960 psi | 67% | 2723 fps | 98.4% |
| Shooters World Precision | <<locked>> | 80% | 51,953 psi | 81% | 2867 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,205 psi | 65% | 2703 fps | 97% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,747 psi | 76% | 2877 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,283 psi | 76% | 2717 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,119 psi | 66% | 2671 fps | 97.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 42,989 psi | 67% | 2802 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 47,529 psi | 74% | 2818 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 50,401 psi | 79% | 2861 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 36,622 psi | 57% | 2680 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 38,522 psi | 60% | 2671 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 54,157 psi | 85% | 2838 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 54,128 psi | 85% | 2851 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 45,440 psi | 71% | 2743 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,379 psi | 65% | 2723 fps | 98.9% |
| Vihtavuori N165 | <<locked>> | 90% | 40,654 psi | 64% | 2710 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 52,344 psi | 82% | 2844 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,785 psi | 64% | 2720 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 80% | 32,010 psi | 50% | 2566 fps | 97% |
| Vihtavuori N560 | 78.3 gr | 92% | 47,659 psi | 75% | 2949 fps | 95% |
| Vihtavuori N565 | <<locked>> | 98% | 47,021 psi | 74% | 2920 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,495 psi | 63% | 2690 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 42,395 psi | 66% | 2782 fps | 97.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,570 psi | 40% | 2457 fps | 95.8% |
| Winchester Supreme 780 | <<locked>> | 90% | 43,526 psi | 68% | 2776 fps | 95.7% |
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 86 powders for .300 Weath. Mag. loaded with the .308 | 168gr | Berger VLD Hunting. Alliant Reloder-26 delivers the highest muzzle velocity at 3,136 fps; across all powders the maximum-charge window runs from 1,877 fps to 3,136 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 86 of the 86 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, 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. Alliant Reloder-23, Alliant Reloder-25, Bofors RP15 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for .300 Weath. Mag. with the .308 | 168gr | Berger VLD Hunting 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.