Load Specifications
Bullet Manufacturer:SAKO
Bullet Weight:170 gr
Bullet Diameter:0.308"
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:1:10.5
Load data in caliber .300 Win. Mag. with .308 | 170gr | Sako Powerhead Blade bullet and 100 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Alliant Reloder-17.
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>> | 84% | 52,953 psi | 85% | 2772 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,347 psi | 89% | 2844 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,892 psi | 77% | 2808 fps | 98.5% |
| Accurate 4064 | <<locked>> | 86% | 53,417 psi | 86% | 2828 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 53,998 psi | 87% | 2927 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 53,272 psi | 85% | 2858 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,563 psi | 87% | 2867 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,564 psi | 89% | 2969 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,593 psi | 89% | 2858 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 53,316 psi | 85% | 2982 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,911 psi | 88% | 2887 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,303 psi | 89% | 2910 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,013 psi | 88% | 2989 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,405 psi | 90% | 3015 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,650 psi | 88% | 2956 fps | 97.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 47,921 psi | 77% | 2884 fps | 96.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,281 psi | 73% | 2835 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,523 psi | 63% | 2736 fps | 97.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,532 psi | 83% | 3018 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 53,272 psi | 85% | 2877 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 55,666 psi | 89% | 2904 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 47,921 psi | 77% | 2884 fps | 96.2% |
| Bofors RP7 | <<locked>> | 92% | 55,274 psi | 89% | 2881 fps | 98.4% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,201 psi | 89% | 2887 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,173 psi | 90% | 2920 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 92% | 53,113 psi | 85% | 2927 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 90% | 53,330 psi | 86% | 2887 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 82% | 53,882 psi | 86% | 2871 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,071 psi | 88% | 2907 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 53,824 psi | 86% | 2904 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,214 psi | 85% | 2963 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,955 psi | 58% | 1788 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,056 psi | 88% | 2874 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,404 psi | 87% | 2848 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 53,911 psi | 86% | 2848 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,490 psi | 86% | 2828 fps | 98.5% |
| IMR 4350 | <<locked>> | 96% | 56,057 psi | 90% | 2910 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,650 psi | 86% | 2858 fps | 98.5% |
| IMR 4831 | <<locked>> | 96% | 54,433 psi | 87% | 2920 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 53,185 psi | 85% | 2884 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 55,593 psi | 89% | 2858 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 53,142 psi | 85% | 2828 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,840 psi | 90% | 2838 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 53,983 psi | 87% | 2841 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 53,403 psi | 86% | 2854 fps | 99.4% |
| Lovex S070 | <<locked>> | 94% | 54,563 psi | 87% | 2890 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,552 psi | 63% | 2651 fps | 96.6% |
| Norma 201 | <<locked>> | 84% | 55,274 psi | 89% | 2851 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,028 psi | 90% | 2851 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,534 psi | 87% | 2897 fps | 100% |
| Norma 204 | <<locked>> | 94% | 53,113 psi | 85% | 2907 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 50,821 psi | 81% | 2972 fps | 98.2% |
| Norma URP | <<locked>> | 94% | 53,055 psi | 85% | 2917 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 55,288 psi | 89% | 2920 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 55,506 psi | 89% | 2969 fps | 99.4% |
| Ramshot TAC | <<locked>> | 82% | 55,738 psi | 89% | 2884 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,637 psi | 89% | 2897 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,390 psi | 58% | 1827 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 52,779 psi | 85% | 2848 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,188 psi | 90% | 2979 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 56,159 psi | 90% | 3012 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 53,795 psi | 86% | 2949 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 52,881 psi | 85% | 2979 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 82% | 55,898 psi | 90% | 2828 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,825 psi | 90% | 2851 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,477 psi | 89% | 2894 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 53,766 psi | 86% | 2881 fps | 96% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,751 psi | 86% | 2940 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 92% | 55,274 psi | 89% | 2881 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 92% | 53,403 psi | 86% | 2854 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 53,142 psi | 85% | 2828 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 53,983 psi | 87% | 2841 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,563 psi | 87% | 2890 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,824 psi | 86% | 2904 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,404 psi | 87% | 2864 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,245 psi | 89% | 2884 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 53,185 psi | 85% | 2740 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,751 psi | 86% | 2743 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 53,171 psi | 85% | 2802 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,258 psi | 85% | 2933 fps | 97.4% |
| Somchem S335 | <<locked>> | 84% | 55,985 psi | 90% | 2782 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,201 psi | 87% | 2851 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 55,579 psi | 89% | 2890 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 55,332 psi | 89% | 2969 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,128 psi | 87% | 2913 fps | 98.2% |
| Vihtavuori N133 | <<locked>> | 82% | 53,708 psi | 86% | 2726 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,086 psi | 90% | 2812 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,113 psi | 85% | 2782 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 53,577 psi | 86% | 2818 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,390 psi | 89% | 2910 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 46,760 psi | 75% | 2772 fps | 96.3% |
| Vihtavuori N530 | <<locked>> | 82% | 55,956 psi | 90% | 2858 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 54,839 psi | 88% | 2828 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,302 psi | 87% | 2917 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,401 psi | 81% | 2910 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,288 psi | 89% | 2884 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 53,113 psi | 85% | 2927 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,596 psi | 65% | 2871 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,376 psi | 89% | 2890 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 50,966 psi | 82% | 2851 fps | 96.6% |
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% | 46,456 psi | 74% | 2677 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,237 psi | 73% | 2671 fps | 96.1% |
| Accurate 3100 | <<locked>> | 92% | 36,158 psi | 58% | 2575 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 44,005 psi | 71% | 2680 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,866 psi | 53% | 2516 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 80% | 49,995 psi | 80% | 2805 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,322 psi | 68% | 2654 fps | 99% |
| ADI AR 2209 | <<locked>> | 94% | 45,498 psi | 73% | 2789 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,112 psi | 84% | 2805 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,166 psi | 74% | 2858 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,496 psi | 68% | 2677 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,498 psi | 73% | 2746 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,808 psi | 53% | 2530 fps | 96.2% |
| Alliant Reloder-17 | 58.7 gr | 80% | 36,912 psi | 59% | 2661 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 94% | 44,918 psi | 72% | 2782 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 98% | 44,831 psi | 72% | 2825 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,703 psi | 46% | 2441 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 96% | 34,722 psi | 56% | 2615 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 88% | 33,127 psi | 53% | 2621 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,530 psi | 79% | 2815 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 42,351 psi | 68% | 2684 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 44,831 psi | 72% | 2825 fps | 95.3% |
| Bofors RP7 | <<locked>> | 84% | 42,859 psi | 69% | 2657 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,547 psi | 83% | 2831 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,004 psi | 69% | 2690 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 84% | 40,393 psi | 65% | 2687 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 84% | 43,758 psi | 70% | 2713 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 50,502 psi | 81% | 2815 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,298 psi | 49% | 2431 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,963 psi | 75% | 2795 fps | 100% |
| Hodgdon Superformance | 66.7 gr | 86% | 42,598 psi | 68% | 2762 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,803 psi | 43% | 1598 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,370 psi | 78% | 2766 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 50,821 psi | 81% | 2799 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,498 psi | 71% | 2687 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,905 psi | 75% | 2713 fps | 97.3% |
| IMR 4350 | <<locked>> | 86% | 40,886 psi | 66% | 2638 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,218 psi | 63% | 2582 fps | 95.1% |
| IMR 4831 | <<locked>> | 80% | 31,836 psi | 51% | 2474 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 46,673 psi | 75% | 2776 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 52,112 psi | 84% | 2805 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,734 psi | 80% | 2779 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,458 psi | 79% | 2736 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 44,628 psi | 72% | 2690 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,622 psi | 59% | 2530 fps | 95.9% |
| Lovex S070 | <<locked>> | 84% | 39,508 psi | 63% | 2615 fps | 95.6% |
| Lovex S071 | <<locked>> | 98% | 37,043 psi | 59% | 2598 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 48,762 psi | 78% | 2749 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,429 psi | 79% | 2753 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,875 psi | 72% | 2733 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 46,238 psi | 74% | 2782 fps | 95.3% |
| Norma MRP | <<locked>> | 94% | 41,133 psi | 66% | 2779 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 33,185 psi | 53% | 2520 fps | 96% |
| Ramshot Big Game | <<locked>> | 80% | 44,846 psi | 72% | 2749 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 36,912 psi | 59% | 2618 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 52,185 psi | 84% | 2828 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,996 psi | 83% | 2841 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,079 psi | 43% | 1634 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,163 psi | 69% | 2674 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,820 psi | 78% | 2861 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,320 psi | 63% | 2723 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,721 psi | 52% | 2533 fps | 95.6% |
| ReloadSwiss RS 70 | 61.1 gr | 82% | 34,635 psi | 56% | 2598 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 52,678 psi | 84% | 2779 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,369 psi | 74% | 2703 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,842 psi | 64% | 2628 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 96% | 50,314 psi | 81% | 2825 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 94% | 43,743 psi | 70% | 2762 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 84% | 42,859 psi | 69% | 2657 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,622 psi | 59% | 2530 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,734 psi | 80% | 2779 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,628 psi | 72% | 2690 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 39,508 psi | 63% | 2615 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,017 psi | 66% | 2680 fps | 99.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,705 psi | 81% | 2802 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,457 psi | 78% | 2776 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,792 psi | 80% | 2690 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,756 psi | 67% | 2556 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 38,232 psi | 61% | 2526 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 46,427 psi | 74% | 2815 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 49,559 psi | 79% | 2690 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,357 psi | 81% | 2792 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,480 psi | 65% | 2631 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 29,689 psi | 48% | 2470 fps | 98.1% |
| Somchem S385 | <<locked>> | 92% | 41,524 psi | 67% | 2687 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 50,314 psi | 81% | 2677 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,282 psi | 74% | 2671 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,876 psi | 75% | 2687 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,566 psi | 62% | 2566 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 34,577 psi | 55% | 2523 fps | 96.5% |
| Vihtavuori N165 | <<locked>> | 98% | 43,700 psi | 70% | 2717 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 52,431 psi | 84% | 2805 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,121 psi | 72% | 2677 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,011 psi | 55% | 2520 fps | 96.1% |
| Vihtavuori N555 | <<locked>> | 84% | 29,167 psi | 47% | 2457 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,968 psi | 54% | 2497 fps | 98.4% |
| Winchester 760 | <<locked>> | 84% | 40,553 psi | 65% | 2690 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 88% | 26,992 psi | 43% | 2464 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,211 psi | 77% | 2779 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 47,558 psi | 76% | 2792 fps | 95.8% |
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 100 powders for .300 Win. Mag. loaded with the .308 | 170gr | Sako Powerhead Blade. Alliant Reloder-26 delivers the highest muzzle velocity at 3,018 fps; across all powders the maximum-charge window runs from 1,788 fps to 3,018 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 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 170.0 gr projectile in 0.308" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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. ReloadSwiss RS 70, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 Win. Mag. with the .308 | 170gr | Sako Powerhead Blade 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.