Load Specifications
Load data in caliber .300 Weath. Mag. with .311 | 180gr | Lehigh Defense Match Solid bullet and 89 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.
A valid access license is required to use the Personalized Load Calculator.
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% | 57,246 psi | 90% | 2782 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 54,940 psi | 86% | 2815 fps | 99.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 57,334 psi | 90% | 2917 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 54,244 psi | 85% | 2792 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,376 psi | 87% | 2907 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 55,941 psi | 88% | 3009 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 84% | 54,505 psi | 85% | 2828 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,710 psi | 89% | 2963 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 98% | 54,346 psi | 85% | 2956 fps | 97.5% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 56,782 psi | 89% | 2956 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,274 psi | 87% | 2851 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,361 psi | 87% | 2871 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,420 psi | 88% | 2966 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 53,998 psi | 85% | 2933 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 56,014 psi | 88% | 2946 fps | 98.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 57,217 psi | 90% | 3009 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,172 psi | 85% | 2930 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,876 psi | 73% | 2864 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,476 psi | 85% | 3018 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,518 psi | 82% | 2930 fps | 98.3% |
| Bofors RP3 | <<locked>> | 84% | 56,130 psi | 88% | 2867 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 57,217 psi | 90% | 3009 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 55,376 psi | 87% | 2858 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,514 psi | 73% | 2805 fps | 96.5% |
| Hodgdon H380 | <<locked>> | 84% | 56,463 psi | 88% | 2887 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,085 psi | 85% | 2910 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 88% | 57,188 psi | 90% | 2923 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 96% | 54,418 psi | 85% | 2897 fps | 96.9% |
| Hodgdon H4831 SC | <<locked>> | 98% | 57,116 psi | 90% | 2940 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 56,855 psi | 89% | 2887 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,832 psi | 72% | 2904 fps | 97.9% |
| Hodgdon Superformance | <<locked>> | 88% | 54,273 psi | 85% | 2943 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,492 psi | 57% | 1791 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,406 psi | 90% | 2861 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,376 psi | 88% | 2851 fps | 99.6% |
| IMR 4350 | <<locked>> | 92% | 56,753 psi | 89% | 2894 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 57,232 psi | 90% | 2887 fps | 99.6% |
| IMR 4831 | <<locked>> | 92% | 55,912 psi | 88% | 2900 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 56,797 psi | 89% | 2897 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,883 psi | 88% | 2887 fps | 97.3% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,405 psi | 87% | 2986 fps | 97.8% |
| Lovex S062 | <<locked>> | 84% | 57,464 psi | 90% | 2851 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,203 psi | 90% | 2881 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 55,230 psi | 87% | 2874 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,485 psi | 74% | 2766 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 54,665 psi | 86% | 2858 fps | 100% |
| Norma 204 | <<locked>> | 90% | 53,911 psi | 84% | 2890 fps | 98.3% |
| Norma MRP | <<locked>> | 98% | 57,232 psi | 90% | 3038 fps | 99.8% |
| Norma URP | <<locked>> | 90% | 54,273 psi | 85% | 2894 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,724 psi | 87% | 2887 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,159 psi | 88% | 3009 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 92% | 56,710 psi | 89% | 2949 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,096 psi | 79% | 2877 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,173 psi | 58% | 1834 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,318 psi | 88% | 2874 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 57,464 psi | 90% | 2979 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,579 psi | 87% | 2933 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 53,998 psi | 85% | 2959 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,919 psi | 72% | 2897 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 82% | 55,927 psi | 88% | 2815 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,202 psi | 88% | 2861 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,534 psi | 85% | 2871 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 96% | 55,187 psi | 86% | 2930 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 88% | 55,376 psi | 87% | 2858 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,203 psi | 90% | 2881 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 57,464 psi | 90% | 2851 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,230 psi | 87% | 2874 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,346 psi | 85% | 2871 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 57,014 psi | 89% | 2743 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,898 psi | 89% | 2835 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,723 psi | 86% | 2927 fps | 98.7% |
| Somchem S355 | <<locked>> | 86% | 56,144 psi | 88% | 2858 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,304 psi | 88% | 2867 fps | 97.2% |
| Somchem S365 | <<locked>> | 92% | 53,882 psi | 84% | 2894 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,811 psi | 87% | 2907 fps | 99.3% |
| Vihtavuori N135 | <<locked>> | 82% | 56,449 psi | 88% | 2769 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,768 psi | 89% | 2789 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 57,667 psi | 90% | 2835 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,217 psi | 88% | 2887 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,259 psi | 87% | 2884 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 82% | 54,708 psi | 86% | 2782 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,434 psi | 87% | 2894 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 56,637 psi | 89% | 2956 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 57,334 psi | 90% | 3028 fps | 97.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 48,747 psi | 76% | 2867 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 56,130 psi | 88% | 2854 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,317 psi | 85% | 2913 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,096 psi | 79% | 2999 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,101 psi | 88% | 2904 fps | 98.7% |
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% | 53,635 psi | 84% | 2733 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,401 psi | 81% | 2759 fps | 98.6% |
| Accurate 3100 | <<locked>> | 84% | 32,837 psi | 51% | 2461 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 50,879 psi | 80% | 2743 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,073 psi | 61% | 2618 fps | 98.9% |
| Accurate MAGPRO | <<locked>> | 94% | 48,370 psi | 76% | 2877 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 48,109 psi | 75% | 2726 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 40,611 psi | 64% | 2664 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 94% | 47,253 psi | 74% | 2828 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 40,683 psi | 64% | 2664 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,718 psi | 76% | 2749 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,025 psi | 82% | 2822 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,101 psi | 60% | 2631 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,453 psi | 68% | 2756 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,248 psi | 63% | 2654 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,683 psi | 64% | 2707 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,804 psi | 44% | 2382 fps | 97.1% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,560 psi | 49% | 2507 fps | 95.5% |
| Alliant Reloder-26 | 66.6 gr | 80% | 29,675 psi | 47% | 2490 fps | 95.4% |
| Bofors RP15 | <<locked>> | 92% | 40,132 psi | 63% | 2694 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 49,110 psi | 77% | 2759 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,683 psi | 64% | 2707 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 43,062 psi | 67% | 2638 fps | 97.2% |
| Hodgdon H1000 | <<locked>> | 98% | 43,323 psi | 68% | 2743 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 49,327 psi | 77% | 2772 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 41,191 psi | 65% | 2671 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 80% | 44,164 psi | 69% | 2694 fps | 96.8% |
| Hodgdon H4831 | <<locked>> | 92% | 47,311 psi | 74% | 2776 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 49,617 psi | 78% | 2815 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,650 psi | 56% | 2523 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 96% | 40,132 psi | 63% | 2772 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 40,118 psi | 63% | 2680 fps | 96.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,267 psi | 43% | 1601 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,604 psi | 79% | 2759 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,808 psi | 83% | 2792 fps | 99.3% |
| IMR 4350 | <<locked>> | 80% | 38,711 psi | 61% | 2566 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,570 psi | 70% | 2671 fps | 97.9% |
| IMR 4831 | <<locked>> | 80% | 37,550 psi | 59% | 2572 fps | 98.7% |
| IMR 4895 | <<locked>> | 80% | 53,374 psi | 84% | 2848 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 46,224 psi | 72% | 2717 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 94% | 45,266 psi | 71% | 2802 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 50,691 psi | 79% | 2753 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,959 psi | 66% | 2618 fps | 98.5% |
| Lovex S070 | <<locked>> | 80% | 40,059 psi | 63% | 2595 fps | 97.2% |
| Lovex S071 | <<locked>> | 88% | 31,981 psi | 50% | 2438 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 51,343 psi | 80% | 2805 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,886 psi | 64% | 2648 fps | 95.2% |
| Norma MRP | 69.5 gr | 86% | 37,086 psi | 58% | 2654 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 38,870 psi | 61% | 2615 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 80% | 51,924 psi | 81% | 2828 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 45,063 psi | 71% | 2808 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 37,753 psi | 59% | 2602 fps | 97.1% |
| Ramshot Magnum | <<locked>> | 92% | 37,231 psi | 58% | 2618 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,775 psi | 44% | 1640 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,414 psi | 77% | 2762 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,195 psi | 72% | 2808 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,073 psi | 61% | 2641 fps | 98.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,681 psi | 59% | 2648 fps | 98.2% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,941 psi | 58% | 2687 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 52,518 psi | 82% | 2766 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,108 psi | 72% | 2707 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,904 psi | 70% | 2703 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 86% | 39,320 psi | 62% | 2635 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 43,062 psi | 67% | 2638 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,959 psi | 66% | 2618 fps | 98.5% |
| Shooters World Precision | <<locked>> | 80% | 50,691 psi | 79% | 2753 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,059 psi | 63% | 2595 fps | 97.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,543 psi | 75% | 2762 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,282 psi | 74% | 2608 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,901 psi | 64% | 2559 fps | 97.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 38,957 psi | 61% | 2631 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 46,485 psi | 73% | 2707 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 49,182 psi | 77% | 2749 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 35,476 psi | 56% | 2572 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 37,362 psi | 59% | 2566 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 52,924 psi | 83% | 2723 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,113 psi | 83% | 2740 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,309 psi | 69% | 2631 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,335 psi | 63% | 2615 fps | 99.1% |
| Vihtavuori N165 | <<locked>> | 90% | 39,363 psi | 62% | 2598 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 51,256 psi | 80% | 2733 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,639 psi | 62% | 2615 fps | 98.8% |
| Vihtavuori N555 | <<locked>> | 80% | 30,821 psi | 48% | 2457 fps | 97.1% |
| Vihtavuori N560 | 74.4 gr | 92% | 46,354 psi | 73% | 2838 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 98% | 45,455 psi | 71% | 2805 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,407 psi | 62% | 2582 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 41,336 psi | 65% | 2674 fps | 97.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,366 psi | 38% | 2346 fps | 95.7% |
| Winchester Supreme 780 | <<locked>> | 90% | 42,148 psi | 66% | 2664 fps | 95.8% |
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 89 powders for .300 Weath. Mag. loaded with the .311 | 180gr | Lehigh Defense Match Solid. Norma MRP delivers the highest muzzle velocity at 3,038 fps; across all powders the maximum-charge window runs from 1,791 fps to 3,038 fps. Accurate 3100 gives the best case fill at 100 %, and 89 of the 89 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 180.0 gr projectile in 0.311" calls for a 1:10.5 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 .311 | 180gr | Lehigh Defense Match Solid 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.