Load Specifications
Load data in caliber .300 Win. Mag. with .311 | 182gr | Prvi Partizan FMJ BT bullet and 90 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Ramshot Grand and Norma MRP.
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% | 55,709 psi | 89% | 2713 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 54,636 psi | 88% | 2746 fps | 98.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 55,492 psi | 89% | 2833 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 56,115 psi | 90% | 2769 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 53,388 psi | 86% | 2828 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 56,188 psi | 90% | 2804 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,172 psi | 87% | 2868 fps | 98.2% |
| ADI AR 2213 | <<locked>> | 98% | 51,851 psi | 83% | 2859 fps | 96.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,579 psi | 89% | 2925 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 53,621 psi | 86% | 2777 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 53,693 psi | 86% | 2796 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,114 psi | 87% | 2884 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,463 psi | 89% | 2908 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 53,621 psi | 86% | 2859 fps | 98.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 55,724 psi | 89% | 2918 fps | 98.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,605 psi | 84% | 2848 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,904 psi | 72% | 2776 fps | 99.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 55,434 psi | 89% | 2990 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,908 psi | 80% | 2841 fps | 97.5% |
| Bofors RP3 | <<locked>> | 84% | 54,302 psi | 87% | 2792 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,563 psi | 87% | 2917 fps | 98.5% |
| Bofors RP7 | <<locked>> | 88% | 53,824 psi | 86% | 2780 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 84% | 54,737 psi | 88% | 2810 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 53,127 psi | 85% | 2843 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 90% | 53,722 psi | 86% | 2815 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 98% | 54,505 psi | 87% | 2847 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,578 psi | 88% | 2810 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 56,275 psi | 90% | 2848 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,888 psi | 70% | 2808 fps | 96.8% |
| Hodgdon Superformance | <<locked>> | 90% | 55,608 psi | 89% | 2915 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,231 psi | 60% | 1746 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,738 psi | 89% | 2795 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,288 psi | 89% | 2765 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,143 psi | 88% | 2779 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 53,969 psi | 87% | 2758 fps | 99.2% |
| IMR 4350 | <<locked>> | 92% | 54,781 psi | 88% | 2812 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,376 psi | 89% | 2805 fps | 99.3% |
| IMR 4831 | <<locked>> | 96% | 54,795 psi | 88% | 2835 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,071 psi | 88% | 2822 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 53,679 psi | 86% | 2799 fps | 96.5% |
| IMR 7828 SSC | <<locked>> | 98% | 54,868 psi | 88% | 2900 fps | 97% |
| Lovex S062 | <<locked>> | 84% | 55,811 psi | 89% | 2778 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,521 psi | 89% | 2803 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 53,432 psi | 86% | 2793 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,949 psi | 75% | 2686 fps | 98.8% |
| Norma 203B | <<locked>> | 82% | 53,026 psi | 85% | 2782 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,463 psi | 89% | 2863 fps | 98.2% |
| Norma MRP | <<locked>> | 98% | 54,027 psi | 87% | 2942 fps | 99.4% |
| Norma URP | <<locked>> | 92% | 55,593 psi | 89% | 2865 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 53,737 psi | 86% | 2808 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 53,055 psi | 85% | 2905 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 92% | 54,404 psi | 87% | 2867 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,099 psi | 87% | 2884 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,363 psi | 62% | 1789 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,578 psi | 88% | 2794 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,723 psi | 88% | 2897 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 53,214 psi | 85% | 2851 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,448 psi | 89% | 2935 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,121 psi | 71% | 2803 fps | 97.9% |
| Rottweil R 902 | <<locked>> | 82% | 54,447 psi | 87% | 2743 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,389 psi | 87% | 2788 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,883 psi | 90% | 2841 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 96% | 52,910 psi | 85% | 2844 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 88% | 53,824 psi | 86% | 2780 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,521 psi | 89% | 2803 fps | 99.9% |
| Shooters World Precision | <<locked>> | 84% | 55,811 psi | 89% | 2778 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 53,432 psi | 86% | 2792 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,941 psi | 90% | 2847 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,303 psi | 89% | 2674 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,071 psi | 88% | 2755 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,956 psi | 90% | 2894 fps | 98.6% |
| Somchem S355 | <<locked>> | 86% | 54,505 psi | 87% | 2786 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,143 psi | 87% | 2780 fps | 96.3% |
| Somchem S365 | <<locked>> | 94% | 55,013 psi | 88% | 2867 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 53,635 psi | 86% | 2823 fps | 98.8% |
| Unknown powder | <<locked>> | 90% | 56,246 psi | 90% | 2870 fps | 100% |
| Vihtavuori N133 | <<locked>> | 82% | 54,665 psi | 88% | 2653 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 54,810 psi | 88% | 2700 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,331 psi | 87% | 2709 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 56,086 psi | 90% | 2768 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 53,171 psi | 85% | 2790 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,619 psi | 83% | 2766 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 82% | 53,969 psi | 87% | 2735 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 53,490 psi | 86% | 2832 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 55,593 psi | 89% | 2874 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 54,955 psi | 88% | 2942 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 53,606 psi | 86% | 2774 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 53,127 psi | 85% | 2843 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 47,239 psi | 76% | 2913 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,448 psi | 89% | 2844 fps | 98.3% |
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% | 52,301 psi | 84% | 2667 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,933 psi | 72% | 2582 fps | 97.1% |
| Accurate 3100 | <<locked>> | 86% | 34,113 psi | 55% | 2450 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 49,559 psi | 79% | 2674 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,927 psi | 61% | 2549 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 80% | 46,731 psi | 75% | 2653 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 41,814 psi | 67% | 2641 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 96% | 48,660 psi | 78% | 2802 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,648 psi | 83% | 2865 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,181 psi | 76% | 2675 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,517 psi | 81% | 2745 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,941 psi | 59% | 2560 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,814 psi | 67% | 2681 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 41,437 psi | 66% | 2634 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,843 psi | 67% | 2686 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,050 psi | 43% | 2318 fps | 96.4% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,605 psi | 52% | 2489 fps | 95.5% |
| Alliant Reloder-26 | 63.6 gr | 82% | 30,995 psi | 50% | 2487 fps | 95.8% |
| Bofors RP15 | <<locked>> | 94% | 41,089 psi | 66% | 2671 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 47,601 psi | 76% | 2689 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,843 psi | 67% | 2687 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 41,843 psi | 67% | 2563 fps | 96.5% |
| Hodgdon H380 | <<locked>> | 80% | 47,877 psi | 77% | 2698 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 43,207 psi | 69% | 2666 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 82% | 41,771 psi | 67% | 2595 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 51,068 psi | 82% | 2789 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,418 psi | 55% | 2454 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,284 psi | 79% | 2743 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,060 psi | 66% | 2743 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 38,667 psi | 62% | 2602 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,209 psi | 44% | 1558 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,255 psi | 79% | 2694 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 51,779 psi | 83% | 2717 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,977 psi | 74% | 2631 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,933 psi | 72% | 2601 fps | 97.8% |
| IMR 4350 | <<locked>> | 80% | 37,565 psi | 60% | 2493 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,308 psi | 69% | 2595 fps | 97.3% |
| IMR 4831 | <<locked>> | 80% | 33,040 psi | 53% | 2424 fps | 97.2% |
| IMR 4895 | <<locked>> | 80% | 51,779 psi | 83% | 2772 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 47,558 psi | 76% | 2690 fps | 95% |
| IMR 7828 SSC | <<locked>> | 94% | 46,528 psi | 75% | 2774 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 49,371 psi | 79% | 2682 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,770 psi | 65% | 2544 fps | 98% |
| Lovex S070 | <<locked>> | 80% | 39,146 psi | 63% | 2529 fps | 96.6% |
| Lovex S071 | <<locked>> | 90% | 33,170 psi | 53% | 2429 fps | 95.4% |
| Norma 203B | <<locked>> | 80% | 49,864 psi | 80% | 2732 fps | 100% |
| Norma 204 | <<locked>> | 84% | 42,221 psi | 68% | 2630 fps | 95.2% |
| Norma MRP | 66.2 gr | 88% | 38,261 psi | 61% | 2638 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 37,753 psi | 61% | 2546 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 80% | 50,053 psi | 80% | 2753 fps | 100% |
| Ramshot Grand | 71.4 gr | 92% | 45,730 psi | 73% | 2771 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 36,535 psi | 59% | 2531 fps | 96.4% |
| Ramshot Magnum | <<locked>> | 92% | 39,537 psi | 63% | 2624 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,775 psi | 45% | 1597 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,935 psi | 77% | 2684 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,411 psi | 71% | 2734 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,565 psi | 60% | 2566 fps | 98.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,419 psi | 58% | 2570 fps | 97.5% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,072 psi | 61% | 2665 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 51,184 psi | 82% | 2693 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,947 psi | 72% | 2639 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 46,325 psi | 74% | 2678 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 88% | 40,640 psi | 65% | 2619 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 41,843 psi | 67% | 2563 fps | 96.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,770 psi | 65% | 2544 fps | 98% |
| Shooters World Precision | <<locked>> | 80% | 49,371 psi | 79% | 2682 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,146 psi | 63% | 2530 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,064 psi | 74% | 2691 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,963 psi | 74% | 2542 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,929 psi | 64% | 2490 fps | 96.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 40,277 psi | 65% | 2615 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 45,107 psi | 72% | 2634 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 50,763 psi | 81% | 2725 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 34,171 psi | 55% | 2504 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 38,667 psi | 62% | 2548 fps | 95.5% |
| Unknown powder | <<locked>> | 80% | 40,596 psi | 65% | 2599 fps | 98.5% |
| Vihtavuori N133 | <<locked>> | 80% | 51,576 psi | 83% | 2609 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 51,416 psi | 82% | 2654 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,068 psi | 82% | 2664 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,711 psi | 62% | 2486 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,712 psi | 65% | 2574 fps | 98.9% |
| Vihtavuori N165 | <<locked>> | 92% | 39,218 psi | 63% | 2553 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 50,589 psi | 81% | 2686 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,176 psi | 66% | 2614 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 80% | 29,936 psi | 48% | 2396 fps | 96.5% |
| Vihtavuori N560 | <<locked>> | 96% | 47,906 psi | 77% | 2818 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,203 psi | 61% | 2515 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 43,207 psi | 69% | 2666 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,454 psi | 41% | 2345 fps | 96.1% |
| Winchester Supreme 780 | <<locked>> | 88% | 41,582 psi | 67% | 2605 fps | 95.2% |
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 98 powders for .300 Win. Mag. loaded with the .311 | 182gr | Prvi Partizan FMJ BT. Alliant Reloder-26 delivers the highest muzzle velocity at 2,990 fps; across all powders the maximum-charge window runs from 1,746 fps to 2,990 fps. Accurate 3100 gives the best case fill at 100 %, and 98 of the 98 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 182.0 gr projectile in 0.311" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2217 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, Ramshot Grand, Norma MRP rank at the top here: for .300 Win. Mag. with the .311 | 182gr | Prvi Partizan FMJ BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, ADI AR 2225, Baschieri & Pellagri 109 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.