Load Specifications
Bullet Manufacturer:Sellier & Bellot
Bullet Weight:174 gr
Bullet Diameter:0.306"
Bullet Length:<<locked>>
Caliber:.300 Win. Mag. load data
Case Length (l3):2.62"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:90.5 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:13.0
Load data in caliber .300 Win. Mag. with .306 | 174gr | Sellier & Bellot FMJ BT bullet and 92 powders. The key underlying parameters are shown in the table above.
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% | 55,201 psi | 89% | 2776 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,376 psi | 90% | 2848 fps | 98.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,418 psi | 87% | 2894 fps | 99.6% |
| Accurate 4064 | <<locked>> | 84% | 55,753 psi | 89% | 2835 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 52,910 psi | 85% | 2887 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 55,419 psi | 89% | 3031 fps | 97.4% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 56,434 psi | 90% | 3031 fps | 96.2% |
| ADI AR 2208 | <<locked>> | 86% | 55,811 psi | 89% | 2867 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 53,737 psi | 86% | 2927 fps | 97.8% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,143 psi | 88% | 2979 fps | 96.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,955 psi | 88% | 2989 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 53,853 psi | 86% | 2923 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 53,084 psi | 85% | 2838 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 53,388 psi | 86% | 2858 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 53,664 psi | 86% | 2943 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,824 psi | 88% | 2969 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 53,156 psi | 85% | 2913 fps | 97.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,027 psi | 87% | 2976 fps | 98.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,068 psi | 82% | 2907 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,440 psi | 71% | 2831 fps | 99.1% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,650 psi | 88% | 3045 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,545 psi | 79% | 2897 fps | 97.1% |
| Bofors RP3 | <<locked>> | 84% | 53,838 psi | 86% | 2851 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,027 psi | 87% | 2976 fps | 98.1% |
| Bofors RP7 | <<locked>> | 88% | 53,330 psi | 86% | 2838 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 84% | 54,244 psi | 87% | 2871 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 54,955 psi | 88% | 2936 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 88% | 54,737 psi | 88% | 2897 fps | 98.3% |
| Hodgdon H4831 | <<locked>> | 98% | 55,347 psi | 89% | 2923 fps | 96.3% |
| Hodgdon H4831 SC | <<locked>> | 98% | 54,114 psi | 87% | 2904 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,041 psi | 87% | 2871 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,564 psi | 89% | 2907 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,468 psi | 70% | 2858 fps | 96.2% |
| Hodgdon Superformance | <<locked>> | 90% | 55,129 psi | 88% | 2972 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,376 psi | 58% | 1795 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,188 psi | 90% | 2871 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,114 psi | 88% | 2848 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,389 psi | 87% | 2831 fps | 99.1% |
| IMR 4350 | <<locked>> | 92% | 54,288 psi | 87% | 2871 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,882 psi | 88% | 2864 fps | 99.1% |
| IMR 4831 | <<locked>> | 92% | 53,287 psi | 85% | 2881 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 54,781 psi | 88% | 2887 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 53,287 psi | 85% | 2854 fps | 96.1% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,460 psi | 84% | 2946 fps | 96.4% |
| Lovex S062 | <<locked>> | 84% | 55,303 psi | 89% | 2841 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,969 psi | 88% | 2861 fps | 99.7% |
| Lovex S070 | <<locked>> | 92% | 56,304 psi | 90% | 2904 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,252 psi | 73% | 2743 fps | 98.5% |
| Norma 203B | <<locked>> | 84% | 55,970 psi | 90% | 2894 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,998 psi | 88% | 2923 fps | 97.9% |
| Norma MRP | <<locked>> | 98% | 53,432 psi | 86% | 2999 fps | 99.1% |
| Norma URP | <<locked>> | 92% | 55,085 psi | 88% | 2923 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 53,156 psi | 85% | 2867 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,692 psi | 84% | 2959 fps | 96.8% |
| Ramshot Hunter | <<locked>> | 92% | 53,983 psi | 87% | 2927 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,210 psi | 76% | 2838 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,086 psi | 59% | 1837 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,056 psi | 87% | 2851 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,215 psi | 87% | 2959 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,391 psi | 90% | 2966 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,810 psi | 88% | 2992 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,366 psi | 70% | 2848 fps | 97.3% |
| Rottweil R 902 | <<locked>> | 82% | 54,041 psi | 87% | 2805 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 53,925 psi | 86% | 2851 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,521 psi | 89% | 2897 fps | 97.1% |
| Rottweil R 905 | <<locked>> | 98% | 55,840 psi | 90% | 2956 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 88% | 53,330 psi | 86% | 2838 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,969 psi | 88% | 2861 fps | 99.7% |
| Shooters World Precision | <<locked>> | 84% | 55,303 psi | 89% | 2841 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 56,304 psi | 90% | 2904 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,521 psi | 89% | 2910 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,362 psi | 90% | 2881 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,071 psi | 88% | 2740 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,636 psi | 88% | 2815 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,361 psi | 89% | 2953 fps | 98.3% |
| Somchem S355 | <<locked>> | 86% | 53,867 psi | 86% | 2844 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 53,751 psi | 86% | 2838 fps | 95.9% |
| Somchem S365 | <<locked>> | 94% | 54,592 psi | 88% | 2930 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 53,084 psi | 85% | 2877 fps | 98.6% |
| Vihtavuori N135 | <<locked>> | 82% | 54,404 psi | 87% | 2762 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,520 psi | 87% | 2779 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,274 psi | 89% | 2822 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 53,722 psi | 86% | 2867 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,359 psi | 84% | 2851 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 84% | 56,202 psi | 90% | 2822 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,289 psi | 90% | 2923 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 53,563 psi | 86% | 2933 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 53,809 psi | 86% | 2986 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 53,113 psi | 85% | 2831 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,201 psi | 89% | 2943 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,137 psi | 74% | 2966 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 52,968 psi | 85% | 2871 fps | 97.7% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 51,895 psi | 83% | 2730 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,647 psi | 80% | 2740 fps | 97.8% |
| Accurate 3100 | <<locked>> | 86% | 33,736 psi | 54% | 2497 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 49,197 psi | 79% | 2736 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,507 psi | 60% | 2602 fps | 98.1% |
| Accurate High Country | <<locked>> | 94% | 48,312 psi | 77% | 2907 fps | 95.8% |
| Accurate MAGPRO | <<locked>> | 98% | 52,678 psi | 84% | 2969 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 46,224 psi | 74% | 2707 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 44,222 psi | 71% | 2749 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 96% | 48,182 psi | 77% | 2854 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,155 psi | 82% | 2927 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 44,411 psi | 71% | 2753 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,833 psi | 75% | 2736 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,082 psi | 80% | 2805 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,434 psi | 58% | 2608 fps | 98.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,408 psi | 66% | 2736 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 43,903 psi | 70% | 2746 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 44,164 psi | 71% | 2795 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,803 psi | 43% | 2362 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 92% | 34,461 psi | 55% | 2595 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 82% | 30,589 psi | 49% | 2526 fps | 95% |
| Bofors RP15 | <<locked>> | 96% | 43,395 psi | 70% | 2779 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 47,152 psi | 76% | 2746 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 44,164 psi | 71% | 2795 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 41,539 psi | 67% | 2615 fps | 96% |
| Hodgdon H380 | <<locked>> | 80% | 47,616 psi | 76% | 2759 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 39,392 psi | 63% | 2644 fps | 96% |
| Hodgdon H4350 | <<locked>> | 80% | 42,322 psi | 68% | 2667 fps | 95.5% |
| Hodgdon H4831 | <<locked>> | 96% | 51,735 psi | 83% | 2864 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 96% | 50,589 psi | 81% | 2844 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,968 psi | 54% | 2503 fps | 98.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,793 psi | 83% | 2851 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 40,756 psi | 65% | 2789 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 38,348 psi | 61% | 2651 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,151 psi | 44% | 1601 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,692 psi | 84% | 2818 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,631 psi | 78% | 2743 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,024 psi | 82% | 2776 fps | 98.6% |
| IMR 4350 | <<locked>> | 82% | 39,581 psi | 63% | 2595 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,946 psi | 69% | 2648 fps | 96.9% |
| IMR 4831 | <<locked>> | 80% | 36,042 psi | 58% | 2552 fps | 97.8% |
| IMR 4895 | <<locked>> | 80% | 51,329 psi | 82% | 2835 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 50,241 psi | 81% | 2802 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 98% | 49,052 psi | 79% | 2884 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 49,037 psi | 79% | 2743 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,451 psi | 65% | 2598 fps | 97.6% |
| Lovex S070 | <<locked>> | 80% | 38,624 psi | 62% | 2575 fps | 96% |
| Lovex S071 | <<locked>> | 92% | 34,983 psi | 56% | 2526 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 49,414 psi | 79% | 2792 fps | 100% |
| Norma 204 | <<locked>> | 86% | 44,846 psi | 72% | 2743 fps | 95.6% |
| Norma MRP | <<locked>> | 88% | 37,826 psi | 61% | 2684 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 37,202 psi | 60% | 2592 fps | 97.9% |
| Ramshot Big Game | <<locked>> | 80% | 49,603 psi | 80% | 2812 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 49,153 psi | 79% | 2897 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 36,114 psi | 58% | 2579 fps | 95.9% |
| Ramshot Magnum | <<locked>> | 96% | 40,843 psi | 65% | 2710 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,673 psi | 44% | 1640 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,601 psi | 76% | 2743 fps | 98.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,005 psi | 71% | 2792 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,173 psi | 60% | 2615 fps | 97.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,071 psi | 58% | 2621 fps | 97% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 40,393 psi | 65% | 2779 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 80% | 50,865 psi | 82% | 2756 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,367 psi | 71% | 2690 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 48,921 psi | 78% | 2785 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 90% | 43,004 psi | 69% | 2730 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 41,539 psi | 67% | 2615 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,451 psi | 65% | 2598 fps | 97.6% |
| Shooters World Precision | <<locked>> | 80% | 49,037 psi | 79% | 2743 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,624 psi | 62% | 2575 fps | 96% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,513 psi | 73% | 2743 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,953 psi | 85% | 2828 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,774 psi | 73% | 2602 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,581 psi | 63% | 2543 fps | 96.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 42,612 psi | 68% | 2723 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 44,744 psi | 72% | 2690 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 50,270 psi | 81% | 2779 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 33,794 psi | 54% | 2552 fps | 99.6% |
| Somchem S385 | <<locked>> | 88% | 40,843 psi | 65% | 2654 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 51,155 psi | 82% | 2720 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,126 psi | 82% | 2730 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,641 psi | 68% | 2621 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,696 psi | 62% | 2595 fps | 98.3% |
| Vihtavuori N165 | <<locked>> | 92% | 40,248 psi | 65% | 2631 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 49,545 psi | 79% | 2726 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,189 psi | 61% | 2595 fps | 97.9% |
| Vihtavuori N555 | <<locked>> | 80% | 29,457 psi | 47% | 2438 fps | 95.9% |
| Vihtavuori N560 | <<locked>> | 96% | 50,328 psi | 81% | 2923 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,826 psi | 61% | 2566 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 39,537 psi | 63% | 2648 fps | 96.1% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,222 psi | 40% | 2382 fps | 95.2% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,062 psi | 69% | 2694 fps | 95.3% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 92 powders for .300 Win. Mag. loaded with the .306 | 174gr | Sellier & Bellot FMJ BT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,045 fps; across all powders the maximum-charge window runs from 1,795 fps to 3,045 fps. Accurate 3100 gives the best case fill at 100 %, and 92 of the 92 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 174.0 gr projectile in 0.306" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.