Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 190gr | Berger VLD Hunting bullet and 76 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 Ramshot Grand.
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 3100 | <<locked>> | 96% | 55,970 psi | 88% | 2831 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 57,595 psi | 90% | 2864 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 54,375 psi | 85% | 2917 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 82% | 55,347 psi | 87% | 2772 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 54,607 psi | 86% | 2864 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 96% | 55,883 psi | 88% | 2920 fps | 98.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,760 psi | 73% | 2753 fps | 96.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,553 psi | 65% | 2713 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,695 psi | 89% | 2799 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,766 psi | 86% | 2867 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,840 psi | 88% | 2881 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 57,740 psi | 90% | 2907 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,695 psi | 87% | 2917 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 56,811 psi | 89% | 2890 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,518 psi | 82% | 2897 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 57,305 psi | 90% | 2982 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 54,636 psi | 86% | 2897 fps | 99.2% |
| Bofors RP3 | <<locked>> | 82% | 57,595 psi | 90% | 2815 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,414 psi | 76% | 2825 fps | 97.8% |
| Bofors RP5 | <<locked>> | 96% | 55,695 psi | 87% | 2917 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 56,724 psi | 89% | 2815 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,648 psi | 81% | 2844 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 86% | 55,608 psi | 87% | 2864 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 54,955 psi | 86% | 2825 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 94% | 55,985 psi | 88% | 2861 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,839 psi | 86% | 2844 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 55,143 psi | 86% | 2792 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,314 psi | 80% | 2953 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 86% | 56,028 psi | 88% | 2904 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,999 psi | 58% | 1762 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,476 psi | 85% | 2795 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,592 psi | 86% | 2782 fps | 99.7% |
| IMR 4831 | <<locked>> | 88% | 54,360 psi | 85% | 2805 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 57,159 psi | 90% | 2844 fps | 98.2% |
| IMR 7828 SSC | <<locked>> | 98% | 57,377 psi | 90% | 2956 fps | 98.8% |
| Lovex S065 | <<locked>> | 86% | 55,100 psi | 86% | 2782 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 56,797 psi | 89% | 2831 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,476 psi | 84% | 2792 fps | 100% |
| Norma 204 | <<locked>> | 88% | 55,361 psi | 87% | 2851 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 37,159 psi | 58% | 2638 fps | 96.6% |
| Norma MRP | <<locked>> | 94% | 55,651 psi | 87% | 2940 fps | 99.9% |
| Norma URP | <<locked>> | 88% | 56,086 psi | 88% | 2848 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,317 psi | 85% | 2920 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 88% | 54,810 psi | 86% | 2854 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 56,478 psi | 89% | 2913 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,753 psi | 59% | 1804 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 57,464 psi | 90% | 2825 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 55,288 psi | 87% | 2867 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 57,624 psi | 90% | 2890 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 55,840 psi | 88% | 2917 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,866 psi | 81% | 2953 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 82% | 54,288 psi | 85% | 2762 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 56,043 psi | 88% | 2835 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 94% | 57,159 psi | 90% | 2897 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 86% | 56,724 psi | 89% | 2815 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 55,100 psi | 86% | 2782 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 56,797 psi | 89% | 2831 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,811 psi | 87% | 2822 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,520 psi | 85% | 2641 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,476 psi | 85% | 2736 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 56,695 psi | 89% | 2890 fps | 99.4% |
| Somchem S355 | <<locked>> | 84% | 57,624 psi | 90% | 2808 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 57,638 psi | 90% | 2828 fps | 98.1% |
| Somchem S365 | <<locked>> | 90% | 56,115 psi | 88% | 2848 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 57,725 psi | 90% | 2867 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 55,259 psi | 87% | 2733 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,230 psi | 85% | 2789 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 57,232 psi | 90% | 2848 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 88% | 56,927 psi | 89% | 2844 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 55,492 psi | 87% | 2864 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 55,550 psi | 87% | 2936 fps | 98.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 55,114 psi | 86% | 2910 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 57,537 psi | 90% | 2802 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,840 psi | 88% | 2867 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 53,780 psi | 84% | 2969 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 53,969 psi | 85% | 2808 fps | 99% |
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 3100 | <<locked>> | 80% | 32,648 psi | 51% | 2395 fps | 96.4% |
| Accurate 4350 | <<locked>> | 80% | 43,888 psi | 69% | 2644 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 90% | 47,210 psi | 74% | 2792 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 52,127 psi | 82% | 2726 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 39,305 psi | 62% | 2575 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 88% | 42,830 psi | 67% | 2680 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 96% | 41,060 psi | 64% | 2638 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 94% | 34,301 psi | 54% | 2533 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 53,200 psi | 83% | 2749 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,221 psi | 66% | 2654 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,602 psi | 76% | 2772 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 39,189 psi | 61% | 2569 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 84% | 37,347 psi | 59% | 2569 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,314 psi | 49% | 2421 fps | 99.1% |
| Alliant Reloder-25 | <<locked>> | 82% | 29,269 psi | 46% | 2382 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 33,982 psi | 53% | 2549 fps | 98.2% |
| Bofors RP15 | <<locked>> | 86% | 37,043 psi | 58% | 2559 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 53,998 psi | 85% | 2762 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 39,494 psi | 62% | 2648 fps | 95.2% |
| Bofors RP5 | <<locked>> | 84% | 37,347 psi | 59% | 2569 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 47,036 psi | 74% | 2654 fps | 98.7% |
| Hodgdon H1000 | <<locked>> | 92% | 39,291 psi | 62% | 2602 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 45,614 psi | 71% | 2694 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 80% | 48,211 psi | 76% | 2710 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 88% | 45,672 psi | 72% | 2684 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 88% | 44,933 psi | 70% | 2671 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,856 psi | 62% | 2546 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 36,985 psi | 58% | 2638 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 44,976 psi | 70% | 2717 fps | 98.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,673 psi | 43% | 1575 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,453 psi | 67% | 2585 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,327 psi | 76% | 2677 fps | 99.1% |
| IMR 4831 | <<locked>> | 80% | 41,887 psi | 66% | 2595 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 44,425 psi | 70% | 2625 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 90% | 43,859 psi | 69% | 2713 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 45,788 psi | 72% | 2628 fps | 99.6% |
| Lovex S070 | <<locked>> | 80% | 44,092 psi | 69% | 2615 fps | 98.7% |
| Lovex S071 | <<locked>> | 82% | 30,095 psi | 47% | 2326 fps | 95.2% |
| Norma 204 | <<locked>> | 80% | 42,221 psi | 66% | 2615 fps | 96.5% |
| Norma 217 | <<locked>> | 98% | 34,766 psi | 54% | 2579 fps | 95.6% |
| Norma MRP | 66.6 gr | 80% | 33,939 psi | 53% | 2513 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 43,134 psi | 68% | 2635 fps | 99.8% |
| Ramshot Grand | 72.7 gr | 88% | 40,799 psi | 64% | 2661 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 41,989 psi | 66% | 2628 fps | 98.8% |
| Ramshot Magnum | <<locked>> | 88% | 36,289 psi | 57% | 2543 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,253 psi | 44% | 1611 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,795 psi | 84% | 2769 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,590 psi | 81% | 2818 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,801 psi | 69% | 2667 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,061 psi | 66% | 2680 fps | 99.6% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 33,866 psi | 53% | 2552 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 50,865 psi | 80% | 2713 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 40,698 psi | 64% | 2556 fps | 95% |
| Rottweil R 905 | <<locked>> | 82% | 38,435 psi | 60% | 2556 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 47,036 psi | 74% | 2654 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,788 psi | 72% | 2628 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 80% | 44,092 psi | 69% | 2615 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 52,156 psi | 82% | 2769 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,300 psi | 80% | 2598 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,918 psi | 70% | 2579 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 38,101 psi | 60% | 2549 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 50,734 psi | 80% | 2707 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 44,266 psi | 69% | 2602 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 40,103 psi | 63% | 2595 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,564 psi | 57% | 2484 fps | 96% |
| Vihtavuori N150 | <<locked>> | 80% | 48,544 psi | 76% | 2635 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,570 psi | 70% | 2631 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 36,085 psi | 57% | 2467 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 43,976 psi | 69% | 2635 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 35,201 psi | 55% | 2497 fps | 99% |
| Vihtavuori N560 | 73.3 gr | 88% | 45,179 psi | 71% | 2749 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 92% | 41,945 psi | 66% | 2674 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,627 psi | 68% | 2595 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,818 psi | 72% | 2697 fps | 98.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,804 psi | 44% | 2425 fps | 99% |
| Winchester Supreme 780 | <<locked>> | 84% | 38,305 psi | 60% | 2523 fps | 95.5% |
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 83 powders for .300 Weath. Mag. loaded with the .308 | 190gr | Berger VLD Hunting. Alliant Reloder-26 delivers the highest muzzle velocity at 2,982 fps; across all powders the maximum-charge window runs from 1,762 fps to 2,982 fps. ADI AR 2217 gives the best case fill at 100 %, and 83 of the 83 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 190.0 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. Norma MRP, Vihtavuori N560, Ramshot Grand rank at the top here: for .300 Weath. Mag. with the .308 | 190gr | Berger VLD Hunting they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 7977 Enduron, IMR 8133 Enduron, Vihtavuori N170 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.