Load Specifications
Load data in caliber .300 Weath. Mag. with .3085 | 190gr | Prvi Partizan HP BT bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Ramshot Grand 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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 56,463 psi | 88% | 2838 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 54,418 psi | 85% | 2818 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 55,071 psi | 86% | 2930 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 82% | 55,637 psi | 87% | 2782 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 55,085 psi | 86% | 2871 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 96% | 56,536 psi | 89% | 2933 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,297 psi | 74% | 2766 fps | 97.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,018 psi | 66% | 2723 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 57,058 psi | 89% | 2805 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 55,361 psi | 87% | 2874 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 56,434 psi | 88% | 2890 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,592 psi | 86% | 2861 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 56,391 psi | 88% | 2930 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 57,276 psi | 90% | 2897 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,924 psi | 83% | 2900 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 53,954 psi | 85% | 2933 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 55,317 psi | 87% | 2910 fps | 99.3% |
| Bofors RP30ᴾ | <<locked>> | 100% | 49,052 psi | 77% | 2838 fps | 97.9% |
| Bofors RP5 | <<locked>> | 96% | 56,391 psi | 88% | 2930 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 56,985 psi | 89% | 2822 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,967 psi | 81% | 2854 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 86% | 56,144 psi | 88% | 2874 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 55,274 psi | 87% | 2828 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 94% | 56,405 psi | 88% | 2871 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 94% | 55,303 psi | 87% | 2854 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 55,405 psi | 87% | 2799 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,938 psi | 81% | 2966 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 86% | 56,507 psi | 89% | 2910 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,985 psi | 58% | 1765 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,969 psi | 86% | 2805 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,085 psi | 86% | 2792 fps | 99.8% |
| IMR 4831 | <<locked>> | 88% | 54,665 psi | 86% | 2812 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 57,551 psi | 90% | 2854 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 96% | 54,317 psi | 85% | 2907 fps | 98.4% |
| Lovex S065 | <<locked>> | 86% | 55,593 psi | 87% | 2792 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 57,087 psi | 89% | 2835 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,940 psi | 85% | 2802 fps | 100% |
| Norma 204 | <<locked>> | 88% | 55,840 psi | 88% | 2861 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 37,536 psi | 59% | 2648 fps | 96.8% |
| Norma MRP | <<locked>> | 94% | 56,144 psi | 88% | 2949 fps | 99.9% |
| Norma URP | <<locked>> | 88% | 56,405 psi | 88% | 2854 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,781 psi | 86% | 2927 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 55,288 psi | 87% | 2861 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 57,145 psi | 90% | 2923 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,739 psi | 59% | 1808 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 55,883 psi | 88% | 2874 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,346 psi | 85% | 2844 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 56,318 psi | 88% | 2923 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 52,417 psi | 82% | 2963 fps | 100% |
| Rottweil R 903 | <<locked>> | 82% | 54,853 psi | 86% | 2772 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 56,492 psi | 89% | 2841 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 92% | 54,201 psi | 85% | 2851 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 86% | 56,985 psi | 89% | 2822 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 55,593 psi | 87% | 2792 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 57,087 psi | 89% | 2835 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 56,115 psi | 88% | 2828 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,839 psi | 86% | 2648 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,752 psi | 86% | 2743 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 57,421 psi | 90% | 2904 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 54,404 psi | 85% | 2762 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,331 psi | 85% | 2779 fps | 97.6% |
| Somchem S365 | <<locked>> | 90% | 56,695 psi | 89% | 2858 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,607 psi | 86% | 2825 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 84% | 55,550 psi | 87% | 2736 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,781 psi | 86% | 2799 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 57,638 psi | 90% | 2854 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 88% | 57,363 psi | 90% | 2851 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 55,999 psi | 88% | 2874 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 55,999 psi | 88% | 2943 fps | 98.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 55,550 psi | 87% | 2917 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,215 psi | 85% | 2759 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 56,376 psi | 88% | 2877 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 54,636 psi | 86% | 2979 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,592 psi | 86% | 2822 fps | 99.1% |
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% | 33,054 psi | 52% | 2405 fps | 96.5% |
| Accurate 4350 | <<locked>> | 80% | 44,440 psi | 70% | 2654 fps | 99.9% |
| Accurate MAGPRO | 77 gr | 90% | 47,834 psi | 75% | 2802 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 52,446 psi | 82% | 2733 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 37,043 psi | 58% | 2526 fps | 95% |
| ADI AR 2213 | <<locked>> | 88% | 43,207 psi | 68% | 2690 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 96% | 41,408 psi | 65% | 2648 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 94% | 34,621 psi | 54% | 2543 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 53,577 psi | 84% | 2756 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,554 psi | 67% | 2661 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,965 psi | 77% | 2779 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,115 psi | 58% | 2523 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 84% | 37,623 psi | 59% | 2575 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,720 psi | 50% | 2434 fps | 99.2% |
| Alliant Reloder-25 | <<locked>> | 82% | 29,515 psi | 46% | 2388 fps | 95.5% |
| Alliant Reloder-26 | 69.2 gr | 80% | 34,432 psi | 54% | 2559 fps | 98.4% |
| Bofors RP15 | <<locked>> | 86% | 37,318 psi | 58% | 2566 fps | 95.1% |
| Bofors RP30 | <<locked>> | 94% | 39,929 psi | 63% | 2657 fps | 95.4% |
| Bofors RP5 | <<locked>> | 84% | 37,623 psi | 59% | 2575 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 47,326 psi | 74% | 2661 fps | 98.7% |
| Hodgdon H1000 | <<locked>> | 92% | 39,624 psi | 62% | 2608 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 45,934 psi | 72% | 2700 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 80% | 48,704 psi | 76% | 2720 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 88% | 46,122 psi | 72% | 2694 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 88% | 45,324 psi | 71% | 2677 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,176 psi | 63% | 2549 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 37,347 psi | 59% | 2648 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 45,411 psi | 71% | 2726 fps | 98.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,731 psi | 43% | 1578 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,743 psi | 67% | 2592 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,646 psi | 76% | 2687 fps | 99.2% |
| IMR 4831 | <<locked>> | 80% | 42,177 psi | 66% | 2602 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 86% | 44,846 psi | 70% | 2635 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 88% | 41,452 psi | 65% | 2664 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 46,282 psi | 73% | 2638 fps | 99.6% |
| Lovex S070 | <<locked>> | 80% | 44,570 psi | 70% | 2625 fps | 98.8% |
| Lovex S071 | <<locked>> | 82% | 30,371 psi | 48% | 2336 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 42,699 psi | 67% | 2628 fps | 96.7% |
| Norma 217 | <<locked>> | 98% | 35,128 psi | 55% | 2585 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 34,389 psi | 54% | 2526 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 43,656 psi | 68% | 2644 fps | 99.8% |
| Ramshot Grand | 73.3 gr | 88% | 41,205 psi | 65% | 2671 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 42,467 psi | 67% | 2638 fps | 98.9% |
| Ramshot Magnum | <<locked>> | 88% | 36,666 psi | 57% | 2552 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,311 psi | 44% | 1614 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,953 psi | 81% | 2822 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,135 psi | 69% | 2674 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,511 psi | 67% | 2690 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 34,156 psi | 54% | 2559 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 51,445 psi | 81% | 2723 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 40,959 psi | 64% | 2566 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 80% | 36,361 psi | 57% | 2507 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 47,326 psi | 74% | 2661 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,282 psi | 73% | 2638 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 80% | 44,570 psi | 70% | 2625 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 52,707 psi | 83% | 2776 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,619 psi | 81% | 2605 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,237 psi | 71% | 2585 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 38,551 psi | 60% | 2559 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 51,285 psi | 80% | 2717 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 44,657 psi | 70% | 2612 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 40,451 psi | 63% | 2602 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,999 psi | 58% | 2493 fps | 96.2% |
| Vihtavuori N150 | <<locked>> | 80% | 49,066 psi | 77% | 2641 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,063 psi | 71% | 2641 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 36,492 psi | 57% | 2480 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 44,440 psi | 70% | 2644 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 35,534 psi | 56% | 2507 fps | 99.1% |
| Vihtavuori N560 | <<locked>> | 86% | 42,540 psi | 67% | 2697 fps | 95% |
| Vihtavuori N565 | <<locked>> | 92% | 42,395 psi | 66% | 2680 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,077 psi | 69% | 2605 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,151 psi | 72% | 2703 fps | 99% |
| Winchester StaBALL HD | <<locked>> | 80% | 28,137 psi | 44% | 2438 fps | 99.2% |
| Winchester Supreme 780 | <<locked>> | 84% | 38,566 psi | 60% | 2530 fps | 95.7% |
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 81 powders for .300 Weath. Mag. loaded with the .3085 | 190gr | Prvi Partizan HP BT. Winchester StaBALL HD delivers the highest muzzle velocity at 2,979 fps; across all powders the maximum-charge window runs from 1,765 fps to 2,979 fps. ADI AR 2217 gives the best case fill at 100 %, and 81 of the 81 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 0.3085" 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. Accurate MAGPRO, Ramshot Grand, Alliant Reloder-26 rank at the top here: for .300 Weath. Mag. with the .3085 | 190gr | Prvi Partizan HP BT 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.