Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 200gr | Peregrine VRG-3 bullet and 77 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Winchester StaBALL HD and IMR 7828 SSC.
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% | 56,942 psi | 89% | 2782 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 54,650 psi | 86% | 2759 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 55,680 psi | 87% | 2877 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 82% | 56,159 psi | 88% | 2723 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 55,767 psi | 87% | 2822 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 96% | 57,203 psi | 90% | 2881 fps | 99.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,688 psi | 75% | 2720 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,308 psi | 66% | 2680 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 57,290 psi | 90% | 2743 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 55,985 psi | 88% | 2818 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 57,072 psi | 89% | 2828 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 55,230 psi | 87% | 2808 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 56,956 psi | 89% | 2874 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,375 psi | 85% | 2792 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,577 psi | 84% | 2848 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,621 psi | 86% | 2874 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 55,347 psi | 87% | 2785 fps | 96.3% |
| Bofors RP15 | <<locked>> | 98% | 55,869 psi | 88% | 2858 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 49,385 psi | 77% | 2782 fps | 98.4% |
| Bofors RP5 | <<locked>> | 96% | 56,956 psi | 89% | 2874 fps | 99.7% |
| Bofors RP7 | <<locked>> | 86% | 57,276 psi | 90% | 2762 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,576 psi | 82% | 2805 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 86% | 56,637 psi | 89% | 2818 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 55,695 psi | 87% | 2772 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 94% | 57,232 psi | 90% | 2822 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 94% | 56,028 psi | 88% | 2802 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 55,956 psi | 88% | 2740 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,576 psi | 82% | 2913 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 57,116 psi | 90% | 2854 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,898 psi | 58% | 1719 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 55,419 psi | 87% | 2753 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,405 psi | 87% | 2733 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 55,042 psi | 86% | 2753 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,621 psi | 86% | 2749 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 96% | 54,897 psi | 86% | 2858 fps | 98.9% |
| Lovex S065 | <<locked>> | 86% | 55,811 psi | 87% | 2730 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 57,406 psi | 90% | 2779 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,070 psi | 85% | 2743 fps | 100% |
| Norma 204 | <<locked>> | 88% | 56,449 psi | 88% | 2808 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 37,623 psi | 59% | 2598 fps | 97.4% |
| Norma MRP | <<locked>> | 94% | 56,782 psi | 89% | 2894 fps | 100% |
| Norma URP | <<locked>> | 88% | 56,869 psi | 89% | 2795 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 55,506 psi | 87% | 2877 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 88% | 55,854 psi | 88% | 2805 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 53,693 psi | 84% | 2812 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,826 psi | 59% | 1762 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 56,623 psi | 89% | 2815 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,810 psi | 86% | 2785 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 57,203 psi | 90% | 2871 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,040 psi | 83% | 2913 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 47,761 psi | 75% | 2792 fps | 96.7% |
| Rottweil R 903 | <<locked>> | 82% | 54,926 psi | 86% | 2707 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 56,869 psi | 89% | 2789 fps | 99% |
| Rottweil R 905 | <<locked>> | 92% | 54,563 psi | 86% | 2795 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 86% | 57,276 psi | 90% | 2762 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 55,811 psi | 87% | 2730 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 57,406 psi | 90% | 2779 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 56,521 psi | 89% | 2766 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,216 psi | 87% | 2589 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,013 psi | 86% | 2687 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,128 psi | 85% | 2792 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 54,737 psi | 86% | 2703 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,665 psi | 86% | 2726 fps | 98.1% |
| Somchem S365 | <<locked>> | 90% | 57,290 psi | 90% | 2799 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,100 psi | 86% | 2769 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 56,028 psi | 88% | 2680 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,172 psi | 86% | 2740 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,679 psi | 86% | 2753 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 54,273 psi | 85% | 2743 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 56,536 psi | 89% | 2815 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 56,695 psi | 89% | 2890 fps | 98.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 56,115 psi | 88% | 2867 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 49,023 psi | 77% | 2799 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,607 psi | 86% | 2700 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 56,869 psi | 89% | 2822 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 55,680 psi | 87% | 2920 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,056 psi | 86% | 2769 fps | 99.4% |
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 3100 | <<locked>> | 80% | 32,735 psi | 51% | 2346 fps | 97% |
| Accurate 4350 | <<locked>> | 80% | 44,338 psi | 69% | 2595 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 44,875 psi | 70% | 2690 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 52,649 psi | 83% | 2671 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 37,231 psi | 58% | 2477 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 86% | 40,509 psi | 63% | 2579 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 94% | 38,827 psi | 61% | 2539 fps | 95% |
| ADI AR 2225 | <<locked>> | 92% | 32,518 psi | 51% | 2441 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 53,925 psi | 85% | 2694 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,728 psi | 67% | 2605 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,371 psi | 77% | 2720 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,144 psi | 58% | 2474 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 82% | 35,230 psi | 55% | 2467 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,589 psi | 50% | 2379 fps | 99.5% |
| Alliant Reloder-25 | <<locked>> | 80% | 27,543 psi | 43% | 2283 fps | 95.1% |
| Alliant Reloder-26 | 68.5 gr | 80% | 34,447 psi | 54% | 2507 fps | 98.8% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 51,982 psi | 81% | 2730 fps | 95.5% |
| Bofors RP15 | <<locked>> | 86% | 37,420 psi | 59% | 2516 fps | 95.8% |
| Bofors RP30 | <<locked>> | 92% | 37,521 psi | 59% | 2552 fps | 95.2% |
| Bofors RP5 | <<locked>> | 82% | 35,230 psi | 55% | 2467 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 47,340 psi | 74% | 2605 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 37,246 psi | 58% | 2507 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 46,325 psi | 73% | 2651 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 48,965 psi | 77% | 2664 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 86% | 43,439 psi | 68% | 2589 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 86% | 42,525 psi | 67% | 2569 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,205 psi | 63% | 2493 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 35,099 psi | 55% | 2539 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 45,643 psi | 72% | 2671 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,688 psi | 43% | 1535 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,004 psi | 67% | 2543 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,776 psi | 76% | 2631 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 42,337 psi | 66% | 2549 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 42,279 psi | 66% | 2530 fps | 95.5% |
| IMR 7828 SSC | 70.4 gr | 88% | 41,713 psi | 65% | 2618 fps | 96% |
| Lovex S065 | <<locked>> | 80% | 46,238 psi | 72% | 2579 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 44,541 psi | 70% | 2569 fps | 99.1% |
| Lovex S071 | <<locked>> | 82% | 30,095 psi | 47% | 2280 fps | 95.9% |
| Norma 204 | <<locked>> | 80% | 42,844 psi | 67% | 2575 fps | 97.3% |
| Norma 217 | <<locked>> | 96% | 32,924 psi | 52% | 2480 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 34,374 psi | 54% | 2474 fps | 96.4% |
| Norma URP | <<locked>> | 80% | 43,714 psi | 69% | 2589 fps | 99.9% |
| Ramshot Grand | <<locked>> | 86% | 38,580 psi | 60% | 2562 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 42,612 psi | 67% | 2585 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 86% | 34,200 psi | 54% | 2441 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,253 psi | 44% | 1575 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 52,547 psi | 82% | 2762 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,454 psi | 70% | 2621 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,772 psi | 67% | 2638 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 31,792 psi | 50% | 2448 fps | 95.2% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 44,309 psi | 69% | 2726 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 51,401 psi | 81% | 2657 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 41,234 psi | 65% | 2516 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 80% | 36,332 psi | 57% | 2454 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 47,340 psi | 74% | 2605 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,238 psi | 72% | 2579 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 44,541 psi | 70% | 2569 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,026 psi | 83% | 2717 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,692 psi | 81% | 2543 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,165 psi | 71% | 2530 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,027 psi | 56% | 2451 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 51,285 psi | 80% | 2654 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 41,945 psi | 66% | 2507 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 40,712 psi | 64% | 2546 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,883 psi | 58% | 2441 fps | 96.8% |
| Vihtavuori N150 | <<locked>> | 80% | 49,124 psi | 77% | 2582 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,179 psi | 71% | 2582 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 34,142 psi | 54% | 2372 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 44,527 psi | 70% | 2585 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 35,491 psi | 56% | 2451 fps | 99.4% |
| Vihtavuori N560 | <<locked>> | 86% | 42,902 psi | 67% | 2648 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 90% | 39,711 psi | 62% | 2572 fps | 95% |
| Vihtavuori N568 | <<locked>> | 98% | 45,759 psi | 72% | 2740 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,367 psi | 70% | 2549 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,325 psi | 73% | 2651 fps | 99.3% |
| Winchester StaBALL HD | 65.8 gr | 80% | 27,920 psi | 44% | 2385 fps | 99.5% |
| Winchester Supreme 780 | <<locked>> | 82% | 36,100 psi | 57% | 2425 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 82 powders for .300 Weath. Mag. loaded with the .308 | 200gr | Peregrine VRG-3. Winchester StaBALL HD delivers the highest muzzle velocity at 2,920 fps; across all powders the maximum-charge window runs from 1,719 fps to 2,920 fps. ADI AR 2217 gives the best case fill at 100 %, and 82 of the 82 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 200.0 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. Alliant Reloder-26, Winchester StaBALL HD, IMR 7828 SSC rank at the top here: for .300 Weath. Mag. with the .308 | 200gr | Peregrine VRG-3 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 Enduron, IMR 8133 Enduron 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.