Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 175gr | Berger VLD Target bullet and 85 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% | 56,797 psi | 89% | 2884 fps | 99.2% |
| Accurate 3100 | <<locked>> | 98% | 56,014 psi | 88% | 2936 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 56,608 psi | 89% | 2864 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,085 psi | 85% | 2927 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 54,520 psi | 85% | 3025 fps | 96.5% |
| ADI AR 2208 | <<locked>> | 84% | 56,028 psi | 88% | 2894 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,868 psi | 86% | 2972 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 98% | 56,333 psi | 88% | 3031 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,943 psi | 61% | 2736 fps | 96.7% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 55,071 psi | 86% | 2969 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 57,188 psi | 90% | 2920 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 57,334 psi | 90% | 2943 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,795 psi | 86% | 2982 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 56,217 psi | 88% | 3002 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,375 psi | 85% | 2959 fps | 98.5% |
| Alliant Reloder-22 | <<locked>> | 98% | 55,782 psi | 87% | 3025 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 56,579 psi | 89% | 3002 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,921 psi | 77% | 2940 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 57,130 psi | 90% | 3094 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,723 psi | 86% | 3005 fps | 98.6% |
| Bofors RP3 | <<locked>> | 82% | 54,592 psi | 86% | 2884 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 55,782 psi | 87% | 3025 fps | 98.8% |
| Bofors RP7 | <<locked>> | 88% | 57,290 psi | 90% | 2927 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,312 psi | 76% | 2881 fps | 96.9% |
| Hodgdon H380 | <<locked>> | 82% | 54,708 psi | 86% | 2900 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 56,159 psi | 88% | 2979 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 55,550 psi | 87% | 2936 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 96% | 56,507 psi | 89% | 2972 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 55,332 psi | 87% | 2953 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 55,216 psi | 87% | 2907 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,993 psi | 75% | 2989 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 88% | 56,521 psi | 89% | 3018 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,651 psi | 57% | 1831 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,608 psi | 87% | 2877 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 55,013 psi | 86% | 2910 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,376 psi | 87% | 2900 fps | 99.5% |
| IMR 4831 | <<locked>> | 90% | 54,636 psi | 86% | 2920 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 57,667 psi | 90% | 2956 fps | 97.6% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 57,696 psi | 90% | 3064 fps | 98.2% |
| Lovex S062 | <<locked>> | 82% | 55,898 psi | 88% | 2871 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,767 psi | 87% | 2900 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 57,116 psi | 90% | 2943 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,951 psi | 78% | 2841 fps | 99.5% |
| Norma 203B | <<locked>> | 82% | 56,623 psi | 89% | 2927 fps | 100% |
| Norma 204 | <<locked>> | 90% | 55,970 psi | 88% | 2963 fps | 98.6% |
| Norma MRP | <<locked>> | 96% | 55,550 psi | 87% | 3051 fps | 99.6% |
| Norma URP | <<locked>> | 90% | 56,231 psi | 88% | 2963 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 57,667 psi | 90% | 2956 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,447 psi | 85% | 3022 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 90% | 55,187 psi | 86% | 2966 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,460 psi | 82% | 2956 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,550 psi | 59% | 1877 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,679 psi | 86% | 2887 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 55,564 psi | 87% | 2992 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,070 psi | 85% | 2949 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 56,072 psi | 88% | 3035 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,283 psi | 76% | 2986 fps | 99.2% |
| Rottweil R 902 | <<locked>> | 82% | 57,682 psi | 90% | 2881 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 54,853 psi | 86% | 2884 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 56,521 psi | 89% | 2946 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 96% | 57,566 psi | 90% | 3009 fps | 99% |
| Rottweil R 907 | <<locked>> | 88% | 57,290 psi | 90% | 2927 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,767 psi | 87% | 2900 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 55,898 psi | 88% | 2871 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 57,116 psi | 90% | 2943 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 56,304 psi | 88% | 2940 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,158 psi | 86% | 2762 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,230 psi | 87% | 2851 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 57,101 psi | 89% | 3005 fps | 99% |
| Somchem S355 | <<locked>> | 84% | 54,563 psi | 86% | 2874 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,491 psi | 85% | 2877 fps | 96.8% |
| Somchem S365 | <<locked>> | 92% | 56,130 psi | 88% | 2966 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,520 psi | 85% | 2927 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 86% | 55,970 psi | 88% | 2851 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,665 psi | 86% | 2904 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 57,334 psi | 90% | 2956 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 82% | 56,507 psi | 89% | 2848 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 57,464 psi | 90% | 2963 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 55,361 psi | 87% | 2976 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 55,622 psi | 87% | 3041 fps | 97.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,184 psi | 80% | 2949 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,172 psi | 85% | 2867 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 56,159 psi | 88% | 2979 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,084 psi | 83% | 3081 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,346 psi | 85% | 2917 fps | 98.4% |
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 2700 | <<locked>> | 80% | 53,127 psi | 83% | 2825 fps | 98.8% |
| Accurate 3100 | <<locked>> | 82% | 32,576 psi | 51% | 2484 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 53,127 psi | 83% | 2815 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,162 psi | 65% | 2697 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 94% | 50,749 psi | 80% | 2956 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 49,574 psi | 78% | 2792 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 42,177 psi | 66% | 2733 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 92% | 45,948 psi | 72% | 2838 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 98% | 36,564 psi | 57% | 2674 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 42,453 psi | 67% | 2736 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,575 psi | 79% | 2818 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,809 psi | 84% | 2890 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,610 psi | 62% | 2703 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,324 psi | 71% | 2828 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 42,003 psi | 66% | 2726 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 88% | 39,885 psi | 63% | 2723 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,312 psi | 46% | 2457 fps | 97.6% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,125 psi | 49% | 2523 fps | 95% |
| Alliant Reloder-26 | 69 gr | 80% | 31,531 psi | 49% | 2572 fps | 96.2% |
| Bofors RP15 | <<locked>> | 92% | 42,018 psi | 66% | 2769 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 51,126 psi | 80% | 2831 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 39,885 psi | 63% | 2723 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 44,570 psi | 70% | 2707 fps | 97.5% |
| Hodgdon H1000 | <<locked>> | 96% | 42,250 psi | 66% | 2753 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 51,285 psi | 80% | 2844 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 43,004 psi | 67% | 2743 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 80% | 45,745 psi | 72% | 2762 fps | 97.1% |
| Hodgdon H4831 | <<locked>> | 92% | 49,226 psi | 77% | 2848 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 92% | 48,225 psi | 76% | 2831 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,304 psi | 58% | 2592 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,320 psi | 62% | 2785 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 42,047 psi | 66% | 2759 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,427 psi | 43% | 1637 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,170 psi | 82% | 2825 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,248 psi | 63% | 2635 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,934 psi | 72% | 2733 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 39,421 psi | 62% | 2644 fps | 99% |
| IMR 4955 Enduron | <<locked>> | 90% | 47,776 psi | 75% | 2785 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 94% | 47,166 psi | 74% | 2877 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 52,663 psi | 83% | 2822 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,569 psi | 68% | 2687 fps | 98.8% |
| Lovex S070 | <<locked>> | 80% | 41,814 psi | 66% | 2667 fps | 97.5% |
| Lovex S071 | <<locked>> | 86% | 31,908 psi | 50% | 2464 fps | 95% |
| Norma 203B | <<locked>> | 80% | 53,142 psi | 83% | 2874 fps | 100% |
| Norma 204 | <<locked>> | 82% | 42,714 psi | 67% | 2723 fps | 95.7% |
| Norma MRP | 70.3 gr | 84% | 36,347 psi | 57% | 2667 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 40,669 psi | 64% | 2687 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 80% | 53,911 psi | 84% | 2900 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 43,888 psi | 69% | 2822 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 39,494 psi | 62% | 2674 fps | 97.5% |
| Ramshot Magnum | <<locked>> | 92% | 39,044 psi | 61% | 2694 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,108 psi | 44% | 1680 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,184 psi | 80% | 2831 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,109 psi | 75% | 2877 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,031 psi | 64% | 2713 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,508 psi | 62% | 2723 fps | 98.6% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,201 psi | 57% | 2697 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 54,331 psi | 85% | 2831 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 48,153 psi | 75% | 2776 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 46,601 psi | 73% | 2772 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 86% | 41,263 psi | 65% | 2713 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 44,570 psi | 70% | 2707 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,569 psi | 68% | 2687 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 52,663 psi | 83% | 2822 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,814 psi | 66% | 2667 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,385 psi | 77% | 2831 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,863 psi | 77% | 2671 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,569 psi | 67% | 2628 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 40,886 psi | 64% | 2707 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 48,211 psi | 76% | 2772 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 47,761 psi | 75% | 2762 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 37,391 psi | 59% | 2644 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 36,680 psi | 57% | 2579 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 46,079 psi | 72% | 2700 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,061 psi | 66% | 2684 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 88% | 38,609 psi | 61% | 2618 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 53,127 psi | 83% | 2799 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,524 psi | 65% | 2687 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 80% | 32,648 psi | 51% | 2533 fps | 97.6% |
| Vihtavuori N560 | 77 gr | 92% | 48,341 psi | 76% | 2910 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 98% | 47,906 psi | 75% | 2887 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,104 psi | 64% | 2651 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,004 psi | 67% | 2743 fps | 97.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,976 psi | 41% | 2434 fps | 96.8% |
| Winchester Supreme 780 | <<locked>> | 88% | 41,118 psi | 64% | 2677 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 85 powders for .300 Weath. Mag. loaded with the .308 | 175gr | Berger VLD Target. Alliant Reloder-26 delivers the highest muzzle velocity at 3,094 fps; across all powders the maximum-charge window runs from 1,831 fps to 3,094 fps. ADI AR 2225 gives the best case fill at 100 %, and 85 of the 85 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 175.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-23, 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for .300 Weath. Mag. with the .308 | 175gr | Berger VLD Target 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.