Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 190gr | Reichenberg Mag Dr ckjagd bullet and 77 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Norma MRP and Accurate MAGPRO.
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 3100 | <<locked>> | 96% | 55,651 psi | 87% | 2835 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 57,305 psi | 90% | 2871 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 54,186 psi | 85% | 2923 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 82% | 55,114 psi | 86% | 2779 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 54,520 psi | 85% | 2871 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 96% | 55,912 psi | 88% | 2930 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,572 psi | 73% | 2762 fps | 97% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,350 psi | 65% | 2717 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,304 psi | 88% | 2802 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,665 psi | 86% | 2874 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,869 psi | 88% | 2887 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 57,595 psi | 90% | 2913 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,637 psi | 87% | 2923 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 56,811 psi | 89% | 2897 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,388 psi | 82% | 2900 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 57,406 psi | 90% | 2989 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 54,549 psi | 85% | 2904 fps | 99.2% |
| Bofors RP3 | <<locked>> | 82% | 57,232 psi | 90% | 2818 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,196 psi | 76% | 2831 fps | 97.8% |
| Bofors RP5 | <<locked>> | 96% | 55,637 psi | 87% | 2923 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 56,231 psi | 88% | 2818 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,474 psi | 81% | 2854 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 82% | 57,348 psi | 90% | 2838 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 55,550 psi | 87% | 2871 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 54,810 psi | 86% | 2831 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 94% | 56,057 psi | 88% | 2871 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,911 psi | 86% | 2854 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,853 psi | 86% | 2799 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,358 psi | 80% | 2959 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 86% | 55,869 psi | 88% | 2907 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,927 psi | 58% | 1772 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,476 psi | 85% | 2805 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,462 psi | 85% | 2792 fps | 99.8% |
| IMR 4831 | <<locked>> | 90% | 57,580 psi | 90% | 2861 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 57,029 psi | 89% | 2854 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 98% | 57,392 psi | 90% | 2966 fps | 98.9% |
| Lovex S065 | <<locked>> | 86% | 54,795 psi | 86% | 2785 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 56,405 psi | 88% | 2835 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,910 psi | 83% | 2795 fps | 100% |
| Norma 204 | <<locked>> | 88% | 55,303 psi | 87% | 2861 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 36,724 psi | 58% | 2635 fps | 96.5% |
| Norma MRP | <<locked>> | 94% | 55,550 psi | 87% | 2949 fps | 99.9% |
| Norma URP | <<locked>> | 88% | 55,782 psi | 87% | 2854 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,259 psi | 85% | 2927 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 88% | 54,636 psi | 86% | 2858 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 56,449 psi | 88% | 2920 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,637 psi | 59% | 1811 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 57,232 psi | 90% | 2828 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 55,158 psi | 86% | 2874 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 57,406 psi | 90% | 2894 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 55,753 psi | 87% | 2923 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,706 psi | 81% | 2956 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 57,566 psi | 90% | 2818 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,985 psi | 88% | 2841 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 94% | 57,188 psi | 90% | 2904 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 86% | 56,231 psi | 88% | 2818 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,795 psi | 86% | 2785 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 56,405 psi | 88% | 2835 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,637 psi | 87% | 2828 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 57,667 psi | 90% | 2694 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 57,740 psi | 90% | 2795 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 56,768 psi | 89% | 2900 fps | 99.5% |
| Somchem S355 | <<locked>> | 84% | 57,130 psi | 90% | 2812 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 57,537 psi | 90% | 2838 fps | 98.2% |
| Somchem S365 | <<locked>> | 90% | 56,028 psi | 88% | 2854 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 57,595 psi | 90% | 2874 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 54,998 psi | 86% | 2736 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 53,969 psi | 85% | 2792 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 57,145 psi | 90% | 2858 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 88% | 56,724 psi | 89% | 2851 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 55,129 psi | 86% | 2867 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 55,521 psi | 87% | 2943 fps | 98.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,810 psi | 86% | 2913 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 57,363 psi | 90% | 2808 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,550 psi | 87% | 2871 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 53,998 psi | 85% | 2972 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 57,682 psi | 90% | 2874 fps | 99.5% |
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% | 31,966 psi | 50% | 2385 fps | 96.1% |
| Accurate 4350 | <<locked>> | 80% | 43,381 psi | 68% | 2648 fps | 99.9% |
| Accurate MAGPRO | 77.7 gr | 90% | 47,036 psi | 74% | 2795 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 51,924 psi | 81% | 2733 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 38,914 psi | 61% | 2575 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 88% | 42,453 psi | 67% | 2684 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 96% | 40,698 psi | 64% | 2638 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 94% | 33,924 psi | 53% | 2533 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,823 psi | 83% | 2749 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,916 psi | 66% | 2657 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,211 psi | 76% | 2772 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 38,899 psi | 61% | 2572 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 84% | 36,927 psi | 58% | 2566 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,893 psi | 48% | 2418 fps | 99% |
| Alliant Reloder-25 | <<locked>> | 82% | 28,689 psi | 45% | 2372 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 33,431 psi | 52% | 2543 fps | 98.1% |
| Bofors RP15 | <<locked>> | 88% | 39,160 psi | 61% | 2618 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 53,606 psi | 84% | 2769 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 39,059 psi | 61% | 2644 fps | 95.1% |
| Bofors RP5 | <<locked>> | 84% | 36,927 psi | 58% | 2566 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 46,601 psi | 73% | 2657 fps | 98.7% |
| Hodgdon H1000 | <<locked>> | 92% | 38,899 psi | 61% | 2602 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 53,766 psi | 84% | 2785 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 45,368 psi | 71% | 2697 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 80% | 48,066 psi | 75% | 2717 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 88% | 45,498 psi | 71% | 2690 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 88% | 44,570 psi | 70% | 2674 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,291 psi | 62% | 2539 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 36,593 psi | 57% | 2638 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 44,628 psi | 70% | 2717 fps | 98.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,572 psi | 43% | 1581 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,105 psi | 66% | 2589 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,066 psi | 75% | 2684 fps | 99.2% |
| IMR 4831 | <<locked>> | 80% | 41,350 psi | 65% | 2595 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 44,353 psi | 70% | 2635 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 88% | 40,799 psi | 64% | 2661 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 45,513 psi | 71% | 2635 fps | 99.6% |
| Lovex S070 | <<locked>> | 80% | 43,772 psi | 69% | 2618 fps | 98.7% |
| Lovex S071 | <<locked>> | 84% | 31,285 psi | 49% | 2369 fps | 95.9% |
| Norma 204 | <<locked>> | 80% | 41,959 psi | 66% | 2621 fps | 96.6% |
| Norma 217 | <<locked>> | 98% | 34,287 psi | 54% | 2572 fps | 95.4% |
| Norma MRP | 67.8 gr | 80% | 33,489 psi | 52% | 2510 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 42,888 psi | 67% | 2638 fps | 99.8% |
| Ramshot Grand | <<locked>> | 88% | 40,524 psi | 64% | 2667 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 41,698 psi | 65% | 2631 fps | 98.8% |
| Ramshot Magnum | <<locked>> | 88% | 35,853 psi | 56% | 2539 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,108 psi | 44% | 1617 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,577 psi | 84% | 2776 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,242 psi | 80% | 2818 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,410 psi | 68% | 2667 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,742 psi | 65% | 2684 fps | 99.6% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 33,330 psi | 52% | 2543 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 50,502 psi | 79% | 2717 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 40,437 psi | 63% | 2562 fps | 95% |
| Rottweil R 905 | <<locked>> | 82% | 38,101 psi | 60% | 2556 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 46,601 psi | 73% | 2657 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,513 psi | 71% | 2635 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 80% | 43,772 psi | 69% | 2618 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,996 psi | 81% | 2772 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,879 psi | 80% | 2602 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,411 psi | 70% | 2579 fps | 98.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 37,768 psi | 59% | 2549 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 50,473 psi | 79% | 2713 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 43,990 psi | 69% | 2608 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 39,581 psi | 62% | 2592 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,100 psi | 57% | 2484 fps | 96% |
| Vihtavuori N150 | <<locked>> | 80% | 48,327 psi | 76% | 2638 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,338 psi | 69% | 2635 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 35,679 psi | 56% | 2467 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 43,613 psi | 68% | 2635 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 34,534 psi | 54% | 2490 fps | 98.9% |
| Vihtavuori N560 | 74.6 gr | 88% | 44,933 psi | 70% | 2753 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 92% | 41,452 psi | 65% | 2671 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,337 psi | 68% | 2598 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,368 psi | 71% | 2697 fps | 98.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,224 psi | 43% | 2415 fps | 98.9% |
| Winchester Supreme 780 | <<locked>> | 84% | 37,913 psi | 59% | 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 84 powders for .300 Weath. Mag. loaded with the .308 | 190gr | Reichenberg Mag Dr ckjagd. Alliant Reloder-26 delivers the highest muzzle velocity at 2,989 fps; across all powders the maximum-charge window runs from 1,772 fps to 2,989 fps. ADI AR 2217 gives the best case fill at 100 %, and 84 of the 84 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 190.0 gr projectile in 0.308" calls for a 1:13.0 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. Vihtavuori N560, Norma MRP, Accurate MAGPRO rank at the top here: for .300 Weath. Mag. with the .308 | 190gr | Reichenberg Mag Dr ckjagd 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.