Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 180gr | Nosler Solid Base bullet and 88 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% | 55,622 psi | 89% | 2730 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 53,185 psi | 85% | 2749 fps | 98.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,752 psi | 88% | 2848 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 56,217 psi | 90% | 2789 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 53,142 psi | 85% | 2841 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 56,057 psi | 90% | 2818 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,157 psi | 87% | 2884 fps | 98.1% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,492 psi | 89% | 2936 fps | 97.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,390 psi | 89% | 2940 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 53,548 psi | 86% | 2795 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 53,577 psi | 86% | 2812 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 53,911 psi | 86% | 2897 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,245 psi | 89% | 2923 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 53,577 psi | 86% | 2874 fps | 98.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,447 psi | 87% | 2933 fps | 98.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,343 psi | 82% | 2864 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,715 psi | 72% | 2792 fps | 99.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 55,216 psi | 89% | 3005 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,835 psi | 80% | 2854 fps | 97.4% |
| Bofors RP3 | <<locked>> | 84% | 54,157 psi | 87% | 2808 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,447 psi | 87% | 2933 fps | 98.4% |
| Bofors RP7 | <<locked>> | 88% | 53,693 psi | 86% | 2795 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 84% | 54,578 psi | 88% | 2825 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 55,303 psi | 89% | 2894 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 88% | 55,187 psi | 88% | 2854 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 98% | 55,666 psi | 89% | 2881 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 98% | 54,375 psi | 87% | 2861 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,317 psi | 87% | 2825 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,898 psi | 90% | 2858 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,801 psi | 70% | 2822 fps | 96.7% |
| Hodgdon Superformance | <<locked>> | 90% | 55,535 psi | 89% | 2930 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,550 psi | 59% | 1759 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,376 psi | 90% | 2822 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,550 psi | 89% | 2802 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,578 psi | 88% | 2785 fps | 99.2% |
| IMR 4350 | <<locked>> | 92% | 54,549 psi | 87% | 2825 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,216 psi | 89% | 2818 fps | 99.2% |
| IMR 4831 | <<locked>> | 92% | 53,838 psi | 86% | 2838 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,013 psi | 88% | 2838 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 53,679 psi | 86% | 2815 fps | 96.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,852 psi | 85% | 2907 fps | 96.8% |
| Lovex S062 | <<locked>> | 84% | 55,709 psi | 89% | 2795 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,361 psi | 89% | 2818 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 53,258 psi | 85% | 2805 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,643 psi | 73% | 2703 fps | 98.7% |
| Norma 203B | <<locked>> | 82% | 52,910 psi | 85% | 2799 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,419 psi | 89% | 2881 fps | 98.2% |
| Norma MRP | <<locked>> | 98% | 53,896 psi | 86% | 2956 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 55,608 psi | 89% | 2881 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 53,563 psi | 86% | 2825 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,185 psi | 85% | 2923 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 92% | 54,375 psi | 87% | 2884 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,471 psi | 76% | 2795 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,086 psi | 59% | 1798 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,418 psi | 87% | 2808 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,766 psi | 88% | 2913 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 53,156 psi | 85% | 2867 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,100 psi | 88% | 2946 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,671 psi | 70% | 2812 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 82% | 54,346 psi | 87% | 2759 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,491 psi | 87% | 2808 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,898 psi | 90% | 2858 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 98% | 56,376 psi | 90% | 2917 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 88% | 53,693 psi | 86% | 2795 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,361 psi | 89% | 2818 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 55,709 psi | 89% | 2795 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 53,258 psi | 85% | 2805 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,956 psi | 90% | 2864 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,216 psi | 89% | 2690 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,056 psi | 88% | 2772 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,898 psi | 90% | 2910 fps | 98.6% |
| Somchem S355 | <<locked>> | 86% | 54,418 psi | 87% | 2802 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,070 psi | 87% | 2795 fps | 96.2% |
| Somchem S365 | <<locked>> | 94% | 54,998 psi | 88% | 2884 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 53,563 psi | 86% | 2838 fps | 98.8% |
| Vihtavuori N135 | <<locked>> | 82% | 54,708 psi | 88% | 2717 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,926 psi | 88% | 2733 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,637 psi | 89% | 2776 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 53,998 psi | 87% | 2822 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,736 psi | 85% | 2812 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 82% | 53,026 psi | 85% | 2730 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 53,359 psi | 86% | 2831 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 54,099 psi | 87% | 2894 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 54,186 psi | 87% | 2943 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 53,548 psi | 86% | 2789 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,550 psi | 89% | 2897 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,572 psi | 75% | 2927 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 53,548 psi | 86% | 2831 fps | 98% |
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% | 52,257 psi | 84% | 2684 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,835 psi | 80% | 2694 fps | 98% |
| Accurate 3100 | <<locked>> | 86% | 33,997 psi | 55% | 2464 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 49,487 psi | 79% | 2694 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,855 psi | 61% | 2562 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 80% | 46,673 psi | 75% | 2667 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 41,684 psi | 67% | 2654 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 96% | 48,631 psi | 78% | 2818 fps | 95.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,721 psi | 83% | 2884 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,123 psi | 76% | 2690 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,415 psi | 81% | 2762 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,854 psi | 59% | 2575 fps | 98.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,684 psi | 67% | 2694 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 41,466 psi | 66% | 2651 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,655 psi | 67% | 2697 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,006 psi | 43% | 2329 fps | 96.3% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,605 psi | 52% | 2503 fps | 95.4% |
| Alliant Reloder-26 | 64 gr | 82% | 30,850 psi | 49% | 2497 fps | 95.6% |
| Bofors RP15 | <<locked>> | 94% | 41,089 psi | 66% | 2684 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 47,514 psi | 76% | 2703 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,655 psi | 67% | 2697 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 41,800 psi | 67% | 2579 fps | 96.4% |
| Hodgdon H380 | <<locked>> | 80% | 47,805 psi | 77% | 2713 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 39,755 psi | 64% | 2608 fps | 96.5% |
| Hodgdon H4350 | <<locked>> | 80% | 42,641 psi | 68% | 2628 fps | 95.9% |
| Hodgdon H4831 | <<locked>> | 96% | 51,953 psi | 83% | 2822 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 96% | 51,039 psi | 82% | 2805 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,374 psi | 55% | 2467 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,315 psi | 84% | 2808 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 40,973 psi | 66% | 2756 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 38,682 psi | 62% | 2618 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,311 psi | 44% | 1572 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,026 psi | 85% | 2772 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,095 psi | 79% | 2700 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,155 psi | 82% | 2730 fps | 98.8% |
| IMR 4350 | <<locked>> | 80% | 37,507 psi | 60% | 2507 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,207 psi | 69% | 2608 fps | 97.2% |
| IMR 4831 | <<locked>> | 80% | 36,347 psi | 58% | 2516 fps | 98.1% |
| IMR 4895 | <<locked>> | 80% | 51,706 psi | 83% | 2789 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 50,531 psi | 81% | 2762 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 96% | 46,282 psi | 74% | 2785 fps | 95% |
| Lovex S062 | <<locked>> | 80% | 49,342 psi | 79% | 2697 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,727 psi | 65% | 2559 fps | 97.9% |
| Lovex S070 | <<locked>> | 80% | 38,928 psi | 62% | 2539 fps | 96.4% |
| Lovex S071 | <<locked>> | 90% | 33,054 psi | 53% | 2441 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 49,777 psi | 80% | 2746 fps | 100% |
| Norma 204 | <<locked>> | 84% | 42,264 psi | 68% | 2648 fps | 95.2% |
| Norma MRP | 66.7 gr | 88% | 38,247 psi | 61% | 2654 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 37,492 psi | 60% | 2556 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 80% | 50,183 psi | 80% | 2769 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 46,122 psi | 74% | 2792 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 36,477 psi | 58% | 2543 fps | 96.3% |
| Ramshot Magnum | <<locked>> | 96% | 41,147 psi | 66% | 2674 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,688 psi | 44% | 1608 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,819 psi | 77% | 2697 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,309 psi | 71% | 2749 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,594 psi | 60% | 2582 fps | 98.1% |
| ReloadSwiss RS 70 | 61.9 gr | 80% | 36,477 psi | 58% | 2589 fps | 97.5% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,000 psi | 61% | 2677 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 51,126 psi | 82% | 2710 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,686 psi | 72% | 2651 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 46,137 psi | 74% | 2690 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 88% | 40,495 psi | 65% | 2631 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 41,800 psi | 67% | 2579 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,727 psi | 65% | 2559 fps | 97.9% |
| Shooters World Precision | <<locked>> | 80% | 49,342 psi | 79% | 2697 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,928 psi | 62% | 2539 fps | 96.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,948 psi | 74% | 2707 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,963 psi | 74% | 2556 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,871 psi | 64% | 2503 fps | 96.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 42,830 psi | 69% | 2684 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 45,063 psi | 72% | 2651 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 50,502 psi | 81% | 2736 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 34,113 psi | 55% | 2516 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 38,522 psi | 62% | 2562 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 51,358 psi | 82% | 2671 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,445 psi | 82% | 2684 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,946 psi | 69% | 2579 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,030 psi | 63% | 2559 fps | 98.5% |
| Vihtavuori N165 | <<locked>> | 92% | 40,495 psi | 65% | 2595 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 49,719 psi | 80% | 2680 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,363 psi | 62% | 2556 fps | 98.2% |
| Vihtavuori N555 | <<locked>> | 80% | 29,733 psi | 48% | 2405 fps | 96.4% |
| Vihtavuori N560 | <<locked>> | 96% | 50,676 psi | 81% | 2884 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,087 psi | 61% | 2526 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 39,929 psi | 64% | 2612 fps | 96.5% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,512 psi | 41% | 2359 fps | 96.1% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,381 psi | 70% | 2654 fps | 95.7% |
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 95 powders for .300 Win. Mag. loaded with the .308 | 180gr | Nosler Solid Base. Alliant Reloder-26 delivers the highest muzzle velocity at 3,005 fps; across all powders the maximum-charge window runs from 1,759 fps to 3,005 fps. Accurate 3100 gives the best case fill at 100 %, and 95 of the 95 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, 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, Norma MRP, ReloadSwiss RS 70 rank at the top here: for .300 Win. Mag. with the .308 | 180gr | Nosler Solid Base 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.