Load Specifications
Load data in caliber .300 Win. Mag. with .311 | 190gr | 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, Norma MRP and ReloadSwiss RS 70.
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 2700 | <<locked>> | 86% | 56,159 psi | 90% | 2717 fps | 99.3% |
| Accurate 3100 | <<locked>> | 98% | 53,200 psi | 85% | 2753 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 54,389 psi | 87% | 2687 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,405 psi | 89% | 2799 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 55,999 psi | 90% | 2897 fps | 96.3% |
| ADI AR 2208 | <<locked>> | 84% | 54,317 psi | 87% | 2720 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,057 psi | 90% | 2844 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 98% | 53,722 psi | 86% | 2841 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,043 psi | 59% | 2566 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,245 psi | 89% | 2743 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,288 psi | 89% | 2762 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,028 psi | 90% | 2851 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 53,490 psi | 86% | 2818 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,492 psi | 89% | 2835 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 98% | 52,939 psi | 85% | 2838 fps | 98.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,577 psi | 86% | 2818 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,514 psi | 75% | 2759 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 53,664 psi | 86% | 2904 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,895 psi | 83% | 2818 fps | 98.3% |
| Bofors RP3 | <<locked>> | 84% | 56,057 psi | 90% | 2759 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 52,939 psi | 85% | 2838 fps | 98.6% |
| Bofors RP7 | <<locked>> | 88% | 55,390 psi | 89% | 2749 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 84% | 56,420 psi | 90% | 2779 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 54,969 psi | 88% | 2815 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 90% | 55,390 psi | 89% | 2785 fps | 98.9% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 52,895 psi | 85% | 2769 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 98% | 56,405 psi | 90% | 2825 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 52,982 psi | 85% | 2730 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,346 psi | 87% | 2762 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,571 psi | 73% | 2795 fps | 97.9% |
| Hodgdon Superformance | <<locked>> | 88% | 53,635 psi | 86% | 2831 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,724 psi | 59% | 1713 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 53,867 psi | 86% | 2710 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 53,316 psi | 85% | 2697 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,390 psi | 89% | 2726 fps | 99.6% |
| IMR 4350 | <<locked>> | 90% | 52,939 psi | 85% | 2733 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 86% | 53,621 psi | 86% | 2726 fps | 99.4% |
| IMR 4831 | <<locked>> | 94% | 53,272 psi | 85% | 2756 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,376 psi | 89% | 2772 fps | 97.3% |
| IMR 7828 SSC | <<locked>> | 98% | 55,405 psi | 89% | 2881 fps | 97.9% |
| Lovex S062 | <<locked>> | 82% | 54,041 psi | 87% | 2694 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 53,853 psi | 86% | 2723 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 55,114 psi | 88% | 2762 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,500 psi | 76% | 2667 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 54,621 psi | 88% | 2749 fps | 100% |
| Norma 204 | <<locked>> | 90% | 53,577 psi | 86% | 2782 fps | 98.3% |
| Norma MRP | <<locked>> | 98% | 56,289 psi | 90% | 2920 fps | 99.7% |
| Norma URP | <<locked>> | 90% | 53,998 psi | 87% | 2785 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,492 psi | 89% | 2776 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 55,201 psi | 89% | 2887 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 92% | 56,362 psi | 90% | 2838 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 55,811 psi | 89% | 2864 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,304 psi | 60% | 1752 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,202 psi | 90% | 2762 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 52,953 psi | 85% | 2808 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,201 psi | 89% | 2822 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 53,432 psi | 86% | 2848 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,600 psi | 73% | 2792 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 82% | 55,927 psi | 90% | 2707 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,159 psi | 90% | 2753 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,215 psi | 87% | 2762 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 96% | 54,868 psi | 88% | 2822 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 88% | 55,390 psi | 89% | 2749 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 53,853 psi | 86% | 2723 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 54,041 psi | 87% | 2694 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,114 psi | 88% | 2762 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,041 psi | 87% | 2762 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 53,577 psi | 86% | 2595 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 53,229 psi | 85% | 2677 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,404 psi | 87% | 2815 fps | 98.7% |
| Somchem S355 | <<locked>> | 86% | 56,159 psi | 90% | 2753 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 55,912 psi | 90% | 2756 fps | 97.2% |
| Somchem S365 | <<locked>> | 92% | 53,592 psi | 86% | 2785 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,317 psi | 89% | 2795 fps | 99.3% |
| Unknown powder | <<locked>> | 88% | 54,360 psi | 87% | 2785 fps | 100% |
| Vihtavuori N133 | <<locked>> | 82% | 56,028 psi | 90% | 2612 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 56,405 psi | 90% | 2661 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,854 psi | 90% | 2674 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,288 psi | 87% | 2687 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,723 psi | 88% | 2756 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,823 psi | 85% | 2746 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 82% | 55,506 psi | 89% | 2697 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 55,216 psi | 89% | 2802 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 56,318 psi | 90% | 2848 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 53,272 psi | 85% | 2864 fps | 97.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 48,283 psi | 77% | 2762 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,463 psi | 89% | 2743 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 54,969 psi | 88% | 2815 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,081 psi | 79% | 2887 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 53,316 psi | 85% | 2759 fps | 98.4% |
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 2700 | <<locked>> | 80% | 46,224 psi | 74% | 2556 fps | 97.8% |
| Accurate 3100 | <<locked>> | 82% | 31,024 psi | 50% | 2326 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 51,140 psi | 82% | 2641 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,392 psi | 63% | 2530 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 98% | 52,228 psi | 84% | 2835 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 48,051 psi | 77% | 2621 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 40,596 psi | 65% | 2566 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 94% | 47,050 psi | 75% | 2723 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 98% | 34,708 psi | 56% | 2503 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,617 psi | 78% | 2644 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,025 psi | 83% | 2713 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,174 psi | 61% | 2539 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,381 psi | 70% | 2657 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,277 psi | 65% | 2559 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,596 psi | 65% | 2612 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,021 psi | 45% | 2303 fps | 97.5% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,763 psi | 51% | 2421 fps | 95.8% |
| Alliant Reloder-26 | 61.9 gr | 80% | 30,008 psi | 48% | 2415 fps | 95.9% |
| Bofors RP15 | <<locked>> | 92% | 40,045 psi | 64% | 2598 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 49,168 psi | 79% | 2657 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,596 psi | 65% | 2612 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 43,062 psi | 69% | 2539 fps | 97.3% |
| Hodgdon H380 | <<locked>> | 80% | 49,356 psi | 79% | 2671 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 44,730 psi | 72% | 2641 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 80% | 40,480 psi | 65% | 2520 fps | 95.9% |
| Hodgdon H4831 | <<locked>> | 96% | 46,485 psi | 75% | 2661 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 94% | 49,356 psi | 79% | 2710 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,737 psi | 57% | 2431 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,894 psi | 82% | 2710 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 40,074 psi | 64% | 2674 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 40,016 psi | 64% | 2585 fps | 96.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,383 psi | 44% | 1529 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,633 psi | 81% | 2661 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,268 psi | 76% | 2598 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,166 psi | 74% | 2572 fps | 98.4% |
| IMR 4350 | <<locked>> | 80% | 38,769 psi | 62% | 2470 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,527 psi | 71% | 2566 fps | 98% |
| IMR 4831 | <<locked>> | 80% | 34,243 psi | 55% | 2402 fps | 98% |
| IMR 4955 Enduron | <<locked>> | 90% | 45,948 psi | 74% | 2615 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 92% | 45,020 psi | 72% | 2697 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 50,792 psi | 81% | 2648 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,018 psi | 67% | 2520 fps | 98.7% |
| Lovex S070 | <<locked>> | 80% | 40,379 psi | 65% | 2507 fps | 97.4% |
| Lovex S071 | <<locked>> | 88% | 32,343 psi | 52% | 2362 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 51,358 psi | 82% | 2700 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,799 psi | 65% | 2549 fps | 95.4% |
| Norma MRP | 63.1 gr | 84% | 34,722 psi | 56% | 2507 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 39,102 psi | 63% | 2523 fps | 99% |
| Ramshot Big Game | <<locked>> | 80% | 51,692 psi | 83% | 2720 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 44,106 psi | 71% | 2690 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 37,869 psi | 61% | 2513 fps | 97.4% |
| Ramshot Magnum | <<locked>> | 90% | 38,334 psi | 61% | 2552 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,978 psi | 45% | 1565 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,356 psi | 79% | 2657 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,050 psi | 74% | 2703 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,044 psi | 63% | 2546 fps | 98.8% |
| ReloadSwiss RS 70 | 61.3 gr | 80% | 37,710 psi | 60% | 2552 fps | 98.4% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,854 psi | 59% | 2592 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 52,591 psi | 84% | 2657 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,427 psi | 74% | 2608 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,730 psi | 72% | 2598 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 86% | 39,334 psi | 63% | 2543 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 43,062 psi | 69% | 2539 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,018 psi | 67% | 2520 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 50,792 psi | 81% | 2648 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,379 psi | 65% | 2507 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,572 psi | 76% | 2661 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,456 psi | 76% | 2510 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,133 psi | 66% | 2467 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 38,972 psi | 62% | 2536 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 46,485 psi | 75% | 2605 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 48,936 psi | 78% | 2648 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 35,578 psi | 57% | 2484 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 37,492 psi | 60% | 2474 fps | 95.7% |
| Unknown powder | <<locked>> | 80% | 41,989 psi | 67% | 2575 fps | 99.1% |
| Vihtavuori N133 | <<locked>> | 80% | 52,881 psi | 85% | 2572 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 53,142 psi | 85% | 2618 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,504 psi | 84% | 2628 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,914 psi | 64% | 2457 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,119 psi | 68% | 2549 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 90% | 38,189 psi | 61% | 2484 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 52,025 psi | 83% | 2651 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,583 psi | 68% | 2589 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 80% | 31,212 psi | 50% | 2382 fps | 97.6% |
| Vihtavuori N560 | <<locked>> | 94% | 46,514 psi | 75% | 2743 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 98% | 45,266 psi | 73% | 2707 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,479 psi | 63% | 2490 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,730 psi | 72% | 2641 fps | 98.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,860 psi | 40% | 2283 fps | 96.5% |
| Winchester Supreme 780 | <<locked>> | 86% | 40,219 psi | 64% | 2530 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 97 powders for .300 Win. Mag. loaded with the .311 | 190gr | Prvi Partizan FMJ BT. Norma MRP delivers the highest muzzle velocity at 2,920 fps; across all powders the maximum-charge window runs from 1,713 fps to 2,920 fps. Accurate MAGPRO gives the best case fill at 100 %, and 97 of the 97 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 190.0 gr projectile in 0.311" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate MAGPRO, ADI AR 2217, ADI AR 2225 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, ReloadSwiss RS 70 rank at the top here: for .300 Win. Mag. with the .311 | 190gr | 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, Baschieri & Pellagri 109, Norma 217 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.