Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 168gr | Norma Diamond bullet and 87 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-26 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.
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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% | 54,549 psi | 87% | 2818 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,622 psi | 89% | 2884 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,185 psi | 85% | 2920 fps | 99.4% |
| Accurate 4064 | <<locked>> | 84% | 54,752 psi | 88% | 2871 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,593 psi | 89% | 2979 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 54,940 psi | 88% | 2904 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 52,982 psi | 85% | 2959 fps | 97.4% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,244 psi | 87% | 3009 fps | 96.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,070 psi | 87% | 3025 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,608 psi | 89% | 2927 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,941 psi | 90% | 2949 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 56,101 psi | 90% | 3031 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 53,751 psi | 86% | 3005 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,854 psi | 90% | 3005 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,055 psi | 85% | 3005 fps | 97.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,908 psi | 80% | 2940 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,482 psi | 70% | 2854 fps | 98.6% |
| Alliant Reloder-26 | <<locked>> | 98% | 53,417 psi | 86% | 3077 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,428 psi | 78% | 2920 fps | 96.5% |
| Bofors RP3 | <<locked>> | 84% | 53,055 psi | 85% | 2890 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,055 psi | 85% | 3005 fps | 97.7% |
| Bofors RP7 | <<locked>> | 90% | 55,854 psi | 90% | 2927 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 84% | 53,490 psi | 86% | 2907 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 90% | 53,983 psi | 87% | 2969 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 88% | 53,925 psi | 86% | 2930 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 53,055 psi | 85% | 2907 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,476 psi | 87% | 2943 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 54,157 psi | 87% | 3009 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,376 psi | 58% | 1831 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,347 psi | 89% | 2910 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,288 psi | 87% | 2884 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 53,592 psi | 86% | 2864 fps | 98.8% |
| IMR 4350 | <<locked>> | 92% | 53,432 psi | 86% | 2904 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,172 psi | 87% | 2900 fps | 98.8% |
| IMR 4831 | <<locked>> | 94% | 55,854 psi | 90% | 2966 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 53,867 psi | 86% | 2923 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 56,072 psi | 90% | 2946 fps | 96.3% |
| Lovex S060 | <<locked>> | 82% | 55,869 psi | 90% | 2871 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,636 psi | 88% | 2881 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,215 psi | 87% | 2897 fps | 99.6% |
| Lovex S070 | <<locked>> | 92% | 55,419 psi | 89% | 2940 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,280 psi | 71% | 2766 fps | 98% |
| Norma 201 | <<locked>> | 82% | 55,985 psi | 90% | 2894 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,230 psi | 89% | 2933 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,027 psi | 87% | 2953 fps | 97.4% |
| Norma MRPᴾ | <<locked>> | 100% | 56,318 psi | 90% | 3091 fps | 99.2% |
| Norma URP | <<locked>> | 92% | 54,157 psi | 87% | 2963 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 56,043 psi | 90% | 2963 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,692 psi | 83% | 2989 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 92% | 52,939 psi | 85% | 2959 fps | 99.3% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,238 psi | 74% | 2861 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,057 psi | 59% | 1873 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 53,301 psi | 85% | 2887 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 53,214 psi | 85% | 2995 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 55,448 psi | 89% | 2999 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 53,940 psi | 86% | 3028 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,496 psi | 68% | 2867 fps | 96.5% |
| Rottweil R 902 | <<locked>> | 82% | 53,229 psi | 85% | 2844 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 53,127 psi | 85% | 2887 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,534 psi | 87% | 2930 fps | 96.6% |
| Rottweil R 905 | <<locked>> | 98% | 54,984 psi | 88% | 2989 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 55,854 psi | 90% | 2927 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,215 psi | 87% | 2897 fps | 99.6% |
| Shooters World Precision | <<locked>> | 84% | 54,636 psi | 88% | 2881 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,419 psi | 89% | 2940 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,665 psi | 88% | 2946 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,666 psi | 89% | 2920 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,230 psi | 87% | 2776 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 53,853 psi | 86% | 2848 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,491 psi | 87% | 2986 fps | 97.9% |
| Somchem S355 | <<locked>> | 88% | 56,420 psi | 90% | 2933 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 56,391 psi | 90% | 2923 fps | 96.1% |
| Somchem S365 | <<locked>> | 94% | 53,432 psi | 86% | 2966 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,564 psi | 89% | 2966 fps | 98.7% |
| Vihtavuori N135 | <<locked>> | 82% | 53,577 psi | 86% | 2805 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 53,664 psi | 86% | 2815 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,462 psi | 87% | 2861 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 56,434 psi | 90% | 2956 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,256 psi | 82% | 2881 fps | 97.6% |
| Vihtavuori N540 | <<locked>> | 84% | 55,521 psi | 89% | 2864 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,521 psi | 89% | 2963 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,999 psi | 90% | 3022 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 56,072 psi | 90% | 2923 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,215 psi | 87% | 2976 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,208 psi | 72% | 2995 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,767 psi | 89% | 2927 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,043 psi | 90% | 2963 fps | 97.9% |
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% | 51,039 psi | 82% | 2769 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,820 psi | 78% | 2769 fps | 97.3% |
| Accurate 3100 | <<locked>> | 88% | 35,404 psi | 57% | 2579 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 48,356 psi | 78% | 2776 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,738 psi | 59% | 2628 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 80% | 45,556 psi | 73% | 2743 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 46,427 psi | 74% | 2838 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 98% | 50,546 psi | 81% | 2943 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,343 psi | 81% | 2963 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,064 psi | 74% | 2769 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,255 psi | 79% | 2841 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,810 psi | 57% | 2635 fps | 97.6% |
| Alliant Reloder-17 | 62.7 gr | 80% | 40,582 psi | 65% | 2766 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 90% | 43,149 psi | 69% | 2772 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 94% | 43,279 psi | 69% | 2818 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 82% | 28,079 psi | 45% | 2438 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,823 psi | 54% | 2615 fps | 95.2% |
| Alliant Reloder-26 | 67.5 gr | 84% | 32,184 psi | 52% | 2615 fps | 95.4% |
| Bofors RP15 | <<locked>> | 98% | 45,585 psi | 73% | 2864 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 46,311 psi | 74% | 2779 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 43,279 psi | 69% | 2818 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 40,915 psi | 66% | 2648 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 46,760 psi | 75% | 2792 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 38,783 psi | 62% | 2677 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 82% | 44,541 psi | 71% | 2756 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,330 psi | 53% | 2530 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,082 psi | 82% | 2890 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 40,567 psi | 65% | 2746 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,064 psi | 43% | 1634 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,895 psi | 83% | 2854 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,921 psi | 77% | 2779 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,314 psi | 81% | 2808 fps | 98.3% |
| IMR 4350 | <<locked>> | 84% | 41,481 psi | 67% | 2680 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,293 psi | 68% | 2677 fps | 96.4% |
| IMR 4831 | <<locked>> | 80% | 35,331 psi | 57% | 2579 fps | 97.3% |
| IMR 4895 | <<locked>> | 80% | 50,502 psi | 81% | 2867 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 52,649 psi | 84% | 2890 fps | 95.5% |
| Lovex S060 | <<locked>> | 80% | 52,707 psi | 85% | 2822 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,283 psi | 77% | 2779 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,856 psi | 64% | 2628 fps | 97.2% |
| Lovex S070 | <<locked>> | 80% | 38,000 psi | 61% | 2602 fps | 95.4% |
| Lovex S071 | <<locked>> | 94% | 36,405 psi | 58% | 2602 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 52,518 psi | 84% | 2841 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,588 psi | 78% | 2828 fps | 100% |
| Norma 204 | <<locked>> | 86% | 44,121 psi | 71% | 2772 fps | 95% |
| Norma MRP | <<locked>> | 90% | 39,784 psi | 64% | 2776 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 36,492 psi | 59% | 2618 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 80% | 48,878 psi | 78% | 2848 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 48,225 psi | 77% | 2920 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 35,404 psi | 57% | 2605 fps | 95.2% |
| Ramshot Magnum | <<locked>> | 98% | 42,931 psi | 69% | 2795 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,572 psi | 44% | 1673 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,804 psi | 75% | 2772 fps | 98.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,134 psi | 69% | 2825 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,550 psi | 59% | 2644 fps | 97.2% |
| ReloadSwiss RS 70 | 63.7 gr | 80% | 35,534 psi | 57% | 2648 fps | 96.4% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 39,595 psi | 63% | 2795 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 50,140 psi | 80% | 2795 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,584 psi | 70% | 2723 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 48,124 psi | 77% | 2815 fps | 95% |
| Rottweil R 905 | <<locked>> | 92% | 44,933 psi | 72% | 2812 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 40,915 psi | 66% | 2648 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,856 psi | 64% | 2628 fps | 97.2% |
| Shooters World Precision | <<locked>> | 80% | 48,283 psi | 77% | 2779 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,000 psi | 61% | 2602 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,686 psi | 72% | 2776 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,083 psi | 84% | 2864 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,933 psi | 72% | 2638 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,928 psi | 62% | 2569 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 44,512 psi | 71% | 2805 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 44,019 psi | 71% | 2726 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 52,765 psi | 85% | 2864 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 33,069 psi | 53% | 2579 fps | 99.3% |
| Somchem S385 | <<locked>> | 88% | 40,132 psi | 64% | 2680 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 50,154 psi | 80% | 2756 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,343 psi | 81% | 2766 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,930 psi | 67% | 2654 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,956 psi | 61% | 2625 fps | 97.8% |
| Vihtavuori N165 | <<locked>> | 94% | 42,177 psi | 68% | 2713 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 48,762 psi | 78% | 2762 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,478 psi | 60% | 2625 fps | 97.5% |
| Vihtavuori N555 | <<locked>> | 80% | 28,805 psi | 46% | 2461 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,101 psi | 59% | 2592 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 38,783 psi | 62% | 2677 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,397 psi | 42% | 2464 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,112 psi | 84% | 2871 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,382 psi | 73% | 2782 fps | 95.6% |
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 87 powders for .300 Win. Mag. loaded with the .308 | 168gr | Norma Diamond. Norma MRP delivers the highest muzzle velocity at 3,091 fps; across all powders the maximum-charge window runs from 1,831 fps to 3,091 fps. Accurate 3100 gives the best case fill at 100 %, and 87 of the 87 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 168.0 gr projectile in 0.308" calls for a 1:13.5 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. ReloadSwiss RS 70, Alliant Reloder-26, Alliant Reloder-17 rank at the top here: for .300 Win. Mag. with the .308 | 168gr | Norma Diamond 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.