Load Specifications
Bullet Manufacturer:Lapua
Bullet Weight:175 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.300 Weath. Mag. load data
Case Length (l3):2.824"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:98.9 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:12.0
Load data in caliber .300 Weath. Mag. with .308 | 175gr | Lapua MaxRange Target OTM bullet and 83 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.
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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 2700 | <<locked>> | 82% | 57,232 psi | 90% | 2894 fps | 99.3% |
| Accurate 3100 | <<locked>> | 98% | 56,840 psi | 89% | 2953 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 57,188 psi | 90% | 2874 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,853 psi | 86% | 2940 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 54,404 psi | 85% | 3038 fps | 97.8% |
| Accurate MAGPRO | <<locked>> | 96% | 55,347 psi | 87% | 3041 fps | 96.8% |
| ADI AR 2208 | <<locked>> | 84% | 56,507 psi | 89% | 2904 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,535 psi | 87% | 2989 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 98% | 57,116 psi | 90% | 3048 fps | 98% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,494 psi | 62% | 2756 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 57,740 psi | 90% | 2930 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,535 psi | 87% | 2995 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 56,927 psi | 89% | 3015 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,187 psi | 86% | 2976 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,666 psi | 89% | 3041 fps | 99% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 57,508 psi | 90% | 3018 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,676 psi | 78% | 2956 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,940 psi | 85% | 3051 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,288 psi | 87% | 3018 fps | 98.7% |
| Bofors RP3 | <<locked>> | 82% | 55,114 psi | 86% | 2894 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,498 psi | 71% | 2874 fps | 96.2% |
| Bofors RP5 | <<locked>> | 98% | 56,666 psi | 89% | 3041 fps | 99% |
| Bofors RP7 | <<locked>> | 86% | 54,433 psi | 85% | 2887 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,994 psi | 77% | 2897 fps | 97.2% |
| Hodgdon H380 | <<locked>> | 82% | 55,434 psi | 87% | 2917 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 56,623 psi | 89% | 2992 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 86% | 55,985 psi | 88% | 2949 fps | 99% |
| Hodgdon H4831 | <<locked>> | 96% | 57,087 psi | 89% | 2986 fps | 97.4% |
| Hodgdon H4831 SC | <<locked>> | 96% | 55,898 psi | 88% | 2966 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 55,956 psi | 88% | 2920 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,675 psi | 76% | 3005 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 88% | 57,130 psi | 90% | 3028 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,709 psi | 58% | 1837 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,144 psi | 88% | 2890 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 55,593 psi | 87% | 2923 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,811 psi | 87% | 2913 fps | 99.5% |
| IMR 4831 | <<locked>> | 90% | 55,114 psi | 86% | 2930 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,737 psi | 86% | 2910 fps | 97.1% |
| IMR 7828 SSC | <<locked>> | 98% | 54,462 psi | 85% | 3015 fps | 97.6% |
| Lovex S062 | <<locked>> | 82% | 56,405 psi | 88% | 2881 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,188 psi | 88% | 2910 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,317 psi | 85% | 2904 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,604 psi | 79% | 2858 fps | 99.6% |
| Norma 203B | <<locked>> | 82% | 57,174 psi | 90% | 2940 fps | 100% |
| Norma 204 | <<locked>> | 90% | 56,594 psi | 89% | 2976 fps | 98.7% |
| Norma MRP | <<locked>> | 96% | 56,449 psi | 88% | 3068 fps | 99.7% |
| Norma URP | <<locked>> | 90% | 56,927 psi | 89% | 2976 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,274 psi | 87% | 3038 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 90% | 55,811 psi | 87% | 2979 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,258 psi | 83% | 2969 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,594 psi | 59% | 1883 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,114 psi | 86% | 2897 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,376 psi | 88% | 3005 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,752 psi | 86% | 2963 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 56,956 psi | 89% | 3048 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,950 psi | 77% | 2999 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 84% | 55,434 psi | 87% | 2894 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,116 psi | 90% | 2959 fps | 98% |
| Rottweil R 905 | <<locked>> | 94% | 54,520 psi | 85% | 2966 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 86% | 54,433 psi | 85% | 2887 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,188 psi | 88% | 2910 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 56,405 psi | 88% | 2881 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,317 psi | 85% | 2904 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,029 psi | 89% | 2956 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,680 psi | 87% | 2772 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,666 psi | 87% | 2861 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 57,740 psi | 90% | 3018 fps | 99.1% |
| Somchem S355 | <<locked>> | 84% | 55,274 psi | 87% | 2890 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,172 psi | 86% | 2894 fps | 97% |
| Somchem S365 | <<locked>> | 92% | 56,884 psi | 89% | 2979 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,085 psi | 86% | 2936 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 86% | 56,434 psi | 88% | 2861 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,361 psi | 87% | 2917 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,433 psi | 85% | 2913 fps | 99% |
| Vihtavuori N540 | <<locked>> | 82% | 57,203 psi | 90% | 2861 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 54,389 psi | 85% | 2920 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,028 psi | 88% | 2989 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 56,405 psi | 88% | 3058 fps | 97.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,938 psi | 81% | 2963 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,810 psi | 86% | 2877 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 56,826 psi | 89% | 2995 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,143 psi | 85% | 3094 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,158 psi | 86% | 2933 fps | 98.6% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 80% | 53,548 psi | 84% | 2838 fps | 98.9% |
| Accurate 3100 | <<locked>> | 82% | 33,025 psi | 52% | 2497 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 53,693 psi | 84% | 2825 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,698 psi | 65% | 2710 fps | 99.3% |
| Accurate High Country | <<locked>> | 88% | 44,063 psi | 69% | 2844 fps | 95.3% |
| Accurate MAGPRO | <<locked>> | 94% | 51,576 psi | 81% | 2976 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 50,096 psi | 79% | 2802 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 40,030 psi | 63% | 2690 fps | 95% |
| ADI AR 2213 | <<locked>> | 92% | 46,499 psi | 73% | 2854 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 98% | 36,927 psi | 58% | 2690 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,908 psi | 80% | 2825 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,103 psi | 63% | 2717 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,021 psi | 72% | 2841 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 39,769 psi | 62% | 2680 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,437 psi | 63% | 2736 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,733 psi | 47% | 2470 fps | 97.9% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,604 psi | 50% | 2539 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 32,068 psi | 50% | 2592 fps | 96.6% |
| Bofors RP15 | <<locked>> | 90% | 39,900 psi | 63% | 2723 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 51,663 psi | 81% | 2841 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 42,569 psi | 67% | 2815 fps | 95.3% |
| Bofors RP5 | <<locked>> | 88% | 40,437 psi | 63% | 2736 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 45,049 psi | 71% | 2720 fps | 97.6% |
| Hodgdon H1000 | <<locked>> | 96% | 42,714 psi | 67% | 2769 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 51,837 psi | 81% | 2858 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 43,482 psi | 68% | 2756 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 80% | 46,209 psi | 72% | 2776 fps | 97.2% |
| Hodgdon H4831 | <<locked>> | 90% | 46,644 psi | 73% | 2805 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 92% | 48,791 psi | 76% | 2844 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,782 psi | 59% | 2605 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,958 psi | 63% | 2805 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 42,438 psi | 67% | 2769 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,572 psi | 43% | 1644 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,678 psi | 83% | 2838 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,509 psi | 63% | 2644 fps | 96.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,369 psi | 73% | 2746 fps | 98.3% |
| IMR 4831 | <<locked>> | 80% | 39,885 psi | 63% | 2657 fps | 99.1% |
| IMR 4955 Enduron | <<locked>> | 90% | 48,341 psi | 76% | 2799 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 92% | 44,701 psi | 70% | 2828 fps | 95.1% |
| Lovex S062 | <<locked>> | 80% | 52,982 psi | 83% | 2831 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,005 psi | 69% | 2697 fps | 98.9% |
| Lovex S070 | <<locked>> | 80% | 42,293 psi | 66% | 2680 fps | 97.7% |
| Lovex S071 | <<locked>> | 86% | 32,329 psi | 51% | 2477 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 53,693 psi | 84% | 2884 fps | 100% |
| Norma 204 | <<locked>> | 82% | 43,134 psi | 68% | 2736 fps | 95.9% |
| Norma MRP | <<locked>> | 84% | 36,912 psi | 58% | 2684 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 41,176 psi | 65% | 2700 fps | 99.2% |
| Ramshot Grand | <<locked>> | 92% | 44,396 psi | 70% | 2838 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 39,943 psi | 63% | 2687 fps | 97.7% |
| Ramshot Magnum | <<locked>> | 92% | 39,668 psi | 62% | 2713 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,094 psi | 44% | 1683 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,619 psi | 81% | 2841 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,849 psi | 77% | 2894 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,510 psi | 65% | 2726 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,914 psi | 63% | 2736 fps | 98.7% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,753 psi | 58% | 2717 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 48,689 psi | 76% | 2789 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,295 psi | 69% | 2730 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 84% | 39,030 psi | 61% | 2664 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 45,049 psi | 71% | 2720 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,005 psi | 69% | 2697 fps | 98.9% |
| Shooters World Precision | <<locked>> | 80% | 52,982 psi | 83% | 2831 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,293 psi | 66% | 2680 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,879 psi | 78% | 2844 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,371 psi | 77% | 2680 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,975 psi | 67% | 2641 fps | 97.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 41,321 psi | 65% | 2720 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 48,747 psi | 76% | 2785 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 48,240 psi | 76% | 2776 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 37,768 psi | 59% | 2654 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 37,101 psi | 58% | 2592 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 80% | 46,586 psi | 73% | 2710 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,540 psi | 67% | 2697 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 88% | 39,175 psi | 61% | 2631 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 53,606 psi | 84% | 2808 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,959 psi | 66% | 2697 fps | 99.2% |
| Vihtavuori N555 | <<locked>> | 80% | 33,141 psi | 52% | 2546 fps | 97.9% |
| Vihtavuori N560 | <<locked>> | 90% | 45,818 psi | 72% | 2864 fps | 95% |
| Vihtavuori N565 | <<locked>> | 96% | 45,382 psi | 71% | 2841 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,524 psi | 65% | 2661 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,656 psi | 68% | 2759 fps | 97.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,295 psi | 41% | 2451 fps | 97.1% |
| Winchester Supreme 780 | <<locked>> | 88% | 41,669 psi | 65% | 2690 fps | 95.7% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 83 powders for .300 Weath. Mag. loaded with the .308 | 175gr | Lapua MaxRange Target OTM. Winchester StaBALL HD delivers the highest muzzle velocity at 3,094 fps; across all powders the maximum-charge window runs from 1,837 fps to 3,094 fps. ADI AR 2225 gives the best case fill at 100 %, and 83 of the 83 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 175.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-23, Alliant Reloder-25 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.