Load Specifications
Load data in caliber .300 Win. Mag. with .311 | 180gr | Sellier & Bellot FMJ bullet and 89 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 2495 | <<locked>> | 82% | 56,246 psi | 90% | 2740 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 53,606 psi | 86% | 2759 fps | 98.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 55,463 psi | 89% | 2861 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 53,229 psi | 85% | 2749 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 53,954 psi | 87% | 2858 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 53,795 psi | 86% | 2943 fps | 96% |
| ADI AR 2208 | <<locked>> | 84% | 53,258 psi | 85% | 2782 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,752 psi | 88% | 2900 fps | 98.3% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 56,043 psi | 90% | 2949 fps | 97.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,912 psi | 90% | 2949 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 54,969 psi | 88% | 2894 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,027 psi | 87% | 2802 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,128 psi | 87% | 2822 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,650 psi | 88% | 2913 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,985 psi | 90% | 2936 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 54,215 psi | 87% | 2887 fps | 98.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 55,056 psi | 88% | 2946 fps | 98.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,025 psi | 83% | 2874 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,223 psi | 73% | 2805 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 55,941 psi | 90% | 3015 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,444 psi | 81% | 2867 fps | 97.6% |
| Bofors RP3 | <<locked>> | 84% | 54,679 psi | 88% | 2818 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 55,056 psi | 88% | 2946 fps | 98.5% |
| Bofors RP7 | <<locked>> | 88% | 54,128 psi | 87% | 2805 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 84% | 55,085 psi | 88% | 2835 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 55,999 psi | 90% | 2907 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 88% | 55,651 psi | 89% | 2864 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 98% | 56,246 psi | 90% | 2894 fps | 96.8% |
| Hodgdon H4831 SC | <<locked>> | 98% | 54,984 psi | 88% | 2874 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,071 psi | 88% | 2835 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,405 psi | 90% | 2867 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,280 psi | 71% | 2838 fps | 96.9% |
| Hodgdon Superformance | <<locked>> | 90% | 56,173 psi | 90% | 2943 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,506 psi | 59% | 1762 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,057 psi | 90% | 2815 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,056 psi | 88% | 2795 fps | 99.3% |
| IMR 4350 | <<locked>> | 92% | 55,201 psi | 89% | 2841 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,622 psi | 89% | 2831 fps | 99.3% |
| IMR 4831 | <<locked>> | 92% | 54,302 psi | 87% | 2848 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,506 psi | 89% | 2848 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 54,230 psi | 87% | 2828 fps | 96.6% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,403 psi | 86% | 2920 fps | 97% |
| Lovex S062 | <<locked>> | 84% | 56,246 psi | 90% | 2805 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,811 psi | 89% | 2828 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 53,940 psi | 86% | 2822 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,050 psi | 74% | 2710 fps | 98.8% |
| Norma 203B | <<locked>> | 82% | 53,447 psi | 86% | 2808 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,825 psi | 90% | 2890 fps | 98.3% |
| Norma MRP | <<locked>> | 98% | 54,810 psi | 88% | 2972 fps | 99.4% |
| Norma URP | <<locked>> | 92% | 56,086 psi | 90% | 2890 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,070 psi | 87% | 2835 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,983 psi | 87% | 2940 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 92% | 54,810 psi | 88% | 2894 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,196 psi | 77% | 2812 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,246 psi | 60% | 1804 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,071 psi | 88% | 2822 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 55,288 psi | 89% | 2923 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 53,635 psi | 86% | 2877 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,753 psi | 89% | 2959 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,309 psi | 71% | 2831 fps | 98% |
| Rottweil R 902 | <<locked>> | 82% | 54,882 psi | 88% | 2769 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,013 psi | 88% | 2818 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 52,895 psi | 85% | 2812 fps | 96.9% |
| Rottweil R 905 | <<locked>> | 96% | 53,301 psi | 85% | 2871 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 88% | 54,128 psi | 87% | 2805 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,811 psi | 89% | 2828 fps | 99.9% |
| Shooters World Precision | <<locked>> | 84% | 56,246 psi | 90% | 2805 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 53,940 psi | 86% | 2822 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,434 psi | 90% | 2874 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,724 psi | 89% | 2700 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,492 psi | 89% | 2782 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 52,837 psi | 85% | 2864 fps | 98.1% |
| Somchem S355 | <<locked>> | 86% | 54,911 psi | 88% | 2812 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,578 psi | 88% | 2808 fps | 96.4% |
| Somchem S365 | <<locked>> | 94% | 55,463 psi | 89% | 2894 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 53,940 psi | 86% | 2848 fps | 98.9% |
| Vihtavuori N135 | <<locked>> | 82% | 55,100 psi | 88% | 2726 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,477 psi | 89% | 2743 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,101 psi | 90% | 2785 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,708 psi | 88% | 2835 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,301 psi | 85% | 2825 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 82% | 53,505 psi | 86% | 2736 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 53,751 psi | 86% | 2838 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 54,549 psi | 87% | 2900 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 55,071 psi | 88% | 2963 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,172 psi | 87% | 2802 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,260 psi | 90% | 2910 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 47,166 psi | 76% | 2940 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,128 psi | 87% | 2844 fps | 98.1% |
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 2495 | <<locked>> | 80% | 52,852 psi | 85% | 2694 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,285 psi | 81% | 2707 fps | 98.2% |
| Accurate 3100 | <<locked>> | 86% | 34,418 psi | 55% | 2474 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 50,067 psi | 80% | 2703 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,174 psi | 61% | 2575 fps | 98.5% |
| Accurate MAGPRO | <<locked>> | 96% | 50,024 psi | 80% | 2877 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 46,963 psi | 75% | 2677 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 42,264 psi | 68% | 2671 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 96% | 48,950 psi | 78% | 2825 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,257 psi | 84% | 2894 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 42,293 psi | 68% | 2667 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,630 psi | 76% | 2703 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,705 psi | 81% | 2769 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,144 psi | 60% | 2582 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,163 psi | 68% | 2707 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 41,872 psi | 67% | 2661 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 92% | 42,206 psi | 68% | 2713 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,340 psi | 44% | 2343 fps | 96.5% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,895 psi | 53% | 2513 fps | 95.7% |
| Alliant Reloder-26 | 64.6 gr | 82% | 31,212 psi | 50% | 2510 fps | 95.9% |
| Bofors RP15 | <<locked>> | 94% | 41,640 psi | 67% | 2700 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 48,066 psi | 77% | 2713 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 42,206 psi | 68% | 2713 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 42,264 psi | 68% | 2592 fps | 96.6% |
| Hodgdon H380 | <<locked>> | 80% | 48,283 psi | 77% | 2726 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 40,190 psi | 64% | 2621 fps | 96.7% |
| Hodgdon H4350 | <<locked>> | 80% | 43,120 psi | 69% | 2641 fps | 96.1% |
| Hodgdon H4831 | <<locked>> | 94% | 49,095 psi | 79% | 2776 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 51,372 psi | 82% | 2815 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,693 psi | 56% | 2477 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,837 psi | 85% | 2818 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,452 psi | 66% | 2772 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 39,044 psi | 63% | 2628 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,354 psi | 44% | 1575 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,400 psi | 79% | 2710 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,648 psi | 83% | 2740 fps | 98.9% |
| IMR 4350 | <<locked>> | 80% | 37,768 psi | 61% | 2513 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,482 psi | 70% | 2618 fps | 97.4% |
| IMR 4831 | <<locked>> | 80% | 36,811 psi | 59% | 2530 fps | 98.3% |
| IMR 4895 | <<locked>> | 80% | 52,025 psi | 83% | 2795 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 47,935 psi | 77% | 2720 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 96% | 46,847 psi | 75% | 2802 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 49,835 psi | 80% | 2710 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,176 psi | 66% | 2569 fps | 98.1% |
| Lovex S070 | <<locked>> | 80% | 39,334 psi | 63% | 2549 fps | 96.6% |
| Lovex S071 | <<locked>> | 90% | 33,460 psi | 54% | 2451 fps | 95.4% |
| Norma 203B | <<locked>> | 80% | 50,067 psi | 80% | 2756 fps | 100% |
| Norma 204 | <<locked>> | 84% | 42,714 psi | 68% | 2657 fps | 95.4% |
| Norma MRP | 65.8 gr | 86% | 36,143 psi | 58% | 2605 fps | 95% |
| Norma URP | <<locked>> | 80% | 37,971 psi | 61% | 2569 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 80% | 50,662 psi | 81% | 2782 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 46,659 psi | 75% | 2808 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 36,869 psi | 59% | 2556 fps | 96.5% |
| Ramshot Magnum | <<locked>> | 94% | 38,667 psi | 62% | 2621 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,746 psi | 44% | 1611 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,269 psi | 77% | 2710 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,759 psi | 72% | 2759 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,058 psi | 61% | 2592 fps | 98.2% |
| ReloadSwiss RS 70 | 62.5 gr | 80% | 36,854 psi | 59% | 2598 fps | 97.6% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,421 psi | 62% | 2694 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 51,474 psi | 83% | 2717 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,208 psi | 72% | 2661 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 46,557 psi | 75% | 2700 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 88% | 40,930 psi | 66% | 2641 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 42,264 psi | 68% | 2592 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,176 psi | 66% | 2569 fps | 98.1% |
| Shooters World Precision | <<locked>> | 80% | 49,835 psi | 80% | 2710 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,334 psi | 63% | 2549 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,441 psi | 74% | 2717 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,456 psi | 74% | 2569 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,306 psi | 65% | 2516 fps | 96.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 40,553 psi | 65% | 2638 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 45,542 psi | 73% | 2661 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 51,024 psi | 82% | 2749 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 34,403 psi | 55% | 2526 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 38,957 psi | 62% | 2572 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 51,938 psi | 83% | 2680 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,953 psi | 83% | 2694 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,439 psi | 70% | 2589 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,305 psi | 63% | 2566 fps | 98.6% |
| Vihtavuori N165 | <<locked>> | 92% | 40,872 psi | 66% | 2605 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 50,183 psi | 80% | 2690 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,812 psi | 62% | 2569 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 80% | 30,182 psi | 48% | 2418 fps | 96.6% |
| Vihtavuori N560 | <<locked>> | 94% | 47,921 psi | 77% | 2838 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,435 psi | 62% | 2536 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 40,190 psi | 64% | 2621 fps | 96.7% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,802 psi | 41% | 2372 fps | 96.4% |
| Winchester Supreme 780 | <<locked>> | 90% | 40,988 psi | 66% | 2612 fps | 95% |
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 89 powders for .300 Win. Mag. loaded with the .311 | 180gr | Sellier & Bellot FMJ. Alliant Reloder-26 delivers the highest muzzle velocity at 3,015 fps; across all powders the maximum-charge window runs from 1,762 fps to 3,015 fps. Accurate 3100 gives the best case fill at 100 %, and 89 of the 89 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.311" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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 | 180gr | Sellier & Bellot FMJ they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.