Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 167gr | Peregrine VLR-4 bullet and 93 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 Hodgdon H414.
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% | 55,419 psi | 87% | 2867 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 57,130 psi | 90% | 2949 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 55,230 psi | 87% | 2989 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 56,072 psi | 88% | 2927 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 57,493 psi | 90% | 3045 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 56,434 psi | 88% | 2966 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,781 psi | 86% | 3031 fps | 98.1% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 56,275 psi | 88% | 3087 fps | 97.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,130 psi | 88% | 3094 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 57,305 psi | 90% | 2989 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 57,464 psi | 90% | 3012 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,723 psi | 86% | 3051 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,970 psi | 88% | 3071 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 54,331 psi | 85% | 3022 fps | 98.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 55,274 psi | 87% | 3081 fps | 98.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,156 psi | 82% | 3005 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,208 psi | 71% | 2930 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 56,405 psi | 88% | 3156 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,618 psi | 79% | 2999 fps | 97.4% |
| Bofors RP3 | <<locked>> | 84% | 54,346 psi | 85% | 2949 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 55,274 psi | 87% | 3081 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 57,566 psi | 90% | 2995 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 84% | 54,955 psi | 86% | 2969 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 56,101 psi | 88% | 3045 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 88% | 55,753 psi | 87% | 3002 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 98% | 56,434 psi | 88% | 3028 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 98% | 55,216 psi | 87% | 3009 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,868 psi | 86% | 2969 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,246 psi | 88% | 3005 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,309 psi | 69% | 2959 fps | 96.6% |
| Hodgdon Superformance | <<locked>> | 90% | 56,637 psi | 89% | 3084 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,361 psi | 57% | 1867 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,797 psi | 89% | 2969 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,941 psi | 88% | 2949 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,984 psi | 86% | 2930 fps | 99.2% |
| IMR 4350 | <<locked>> | 92% | 55,172 psi | 86% | 2972 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,811 psi | 87% | 2969 fps | 99.2% |
| IMR 4831 | <<locked>> | 92% | 54,172 psi | 85% | 2979 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,259 psi | 87% | 2986 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 54,186 psi | 85% | 2956 fps | 96.3% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,664 psi | 84% | 3058 fps | 96.8% |
| Lovex S060 | <<locked>> | 82% | 57,392 psi | 90% | 2936 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,941 psi | 88% | 2940 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,622 psi | 87% | 2959 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 57,145 psi | 90% | 3005 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,687 psi | 72% | 2828 fps | 98.5% |
| Norma 201 | <<locked>> | 82% | 57,145 psi | 90% | 2949 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,695 psi | 89% | 2995 fps | 100% |
| Norma 204 | <<locked>> | 92% | 56,115 psi | 88% | 3028 fps | 98.1% |
| Norma MRP | <<locked>> | 98% | 54,897 psi | 86% | 3104 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 56,144 psi | 88% | 3028 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,085 psi | 85% | 2969 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,099 psi | 85% | 3071 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 92% | 55,056 psi | 86% | 3031 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,370 psi | 76% | 2940 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,970 psi | 58% | 1909 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,824 psi | 86% | 2953 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 55,564 psi | 87% | 3064 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 57,566 psi | 90% | 3068 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 56,202 psi | 88% | 3100 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,266 psi | 69% | 2953 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 82% | 54,389 psi | 85% | 2900 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,650 psi | 86% | 2946 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,565 psi | 89% | 3005 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 98% | 57,276 psi | 90% | 3068 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 90% | 57,566 psi | 90% | 2995 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,622 psi | 87% | 2959 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 55,941 psi | 88% | 2940 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 57,145 psi | 90% | 3005 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,318 psi | 88% | 3009 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,305 psi | 90% | 2982 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,651 psi | 87% | 2831 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,288 psi | 87% | 2910 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 56,782 psi | 89% | 3061 fps | 98.5% |
| Somchem S335 | <<locked>> | 82% | 57,595 psi | 90% | 2874 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 54,505 psi | 85% | 2943 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,563 psi | 86% | 2936 fps | 96.2% |
| Somchem S365 | <<locked>> | 94% | 55,738 psi | 87% | 3031 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 54,012 psi | 85% | 2979 fps | 98.7% |
| Vihtavuori N135 | <<locked>> | 82% | 54,882 psi | 86% | 2858 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,085 psi | 86% | 2874 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,854 psi | 88% | 2917 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,621 psi | 86% | 2969 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,330 psi | 84% | 2953 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 84% | 56,956 psi | 89% | 2920 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 57,392 psi | 90% | 3028 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 54,491 psi | 85% | 3031 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 55,114 psi | 86% | 3094 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,230 psi | 85% | 2933 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,101 psi | 88% | 3045 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 47,529 psi | 74% | 3068 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 57,551 psi | 90% | 2992 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,157 psi | 85% | 2972 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% | 51,996 psi | 81% | 2822 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,024 psi | 78% | 2831 fps | 97.9% |
| Accurate 3100 | <<locked>> | 86% | 33,852 psi | 53% | 2572 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 49,298 psi | 77% | 2828 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,579 psi | 59% | 2680 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 80% | 46,818 psi | 73% | 2805 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 44,918 psi | 70% | 2848 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 96% | 49,095 psi | 77% | 2956 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,199 psi | 82% | 3028 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,253 psi | 74% | 2828 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,430 psi | 79% | 2897 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,854 psi | 58% | 2697 fps | 98.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,858 psi | 66% | 2825 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 44,556 psi | 70% | 2841 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 42,032 psi | 66% | 2828 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,803 psi | 42% | 2431 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,561 psi | 51% | 2615 fps | 95% |
| Alliant Reloder-26 | 70.1 gr | 82% | 30,734 psi | 48% | 2602 fps | 95% |
| Bofors RP15 | <<locked>> | 96% | 44,179 psi | 69% | 2874 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 47,485 psi | 74% | 2838 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 42,032 psi | 66% | 2828 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 41,814 psi | 66% | 2707 fps | 96.1% |
| Hodgdon H380 | <<locked>> | 80% | 47,921 psi | 75% | 2851 fps | 99.5% |
| Hodgdon H414 | 65.3 gr | 80% | 39,813 psi | 62% | 2733 fps | 96.1% |
| Hodgdon H4350 | <<locked>> | 80% | 42,743 psi | 67% | 2759 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 96% | 52,678 psi | 83% | 2966 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 96% | 51,576 psi | 81% | 2946 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,345 psi | 54% | 2585 fps | 98.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,663 psi | 83% | 2949 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,452 psi | 65% | 2890 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 38,899 psi | 61% | 2746 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,035 psi | 42% | 1667 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,243 psi | 83% | 2913 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,255 psi | 77% | 2841 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,561 psi | 81% | 2874 fps | 98.7% |
| IMR 4350 | <<locked>> | 82% | 40,030 psi | 63% | 2687 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,352 psi | 68% | 2740 fps | 97% |
| IMR 4831 | <<locked>> | 80% | 36,201 psi | 57% | 2635 fps | 97.8% |
| IMR 4895 | <<locked>> | 80% | 51,735 psi | 81% | 2930 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 51,024 psi | 80% | 2900 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 98% | 50,082 psi | 78% | 2992 fps | 95.9% |
| Lovex S060 | <<locked>> | 80% | 53,838 psi | 84% | 2881 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,298 psi | 77% | 2835 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,727 psi | 64% | 2687 fps | 97.7% |
| Lovex S070 | <<locked>> | 80% | 38,783 psi | 61% | 2661 fps | 96% |
| Lovex S071 | <<locked>> | 92% | 35,070 psi | 55% | 2602 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 53,751 psi | 84% | 2900 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,777 psi | 78% | 2884 fps | 100% |
| Norma 204 | <<locked>> | 86% | 45,455 psi | 71% | 2838 fps | 95.8% |
| Norma MRP | 73 gr | 88% | 38,319 psi | 60% | 2776 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 37,492 psi | 59% | 2677 fps | 97.9% |
| Ramshot Big Game | <<locked>> | 80% | 50,430 psi | 79% | 2910 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 46,659 psi | 73% | 2933 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 36,434 psi | 57% | 2664 fps | 95.9% |
| Ramshot Magnum | <<locked>> | 96% | 41,495 psi | 65% | 2802 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,659 psi | 43% | 1709 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,022 psi | 75% | 2835 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,527 psi | 70% | 2884 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,594 psi | 59% | 2700 fps | 97.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,535 psi | 57% | 2710 fps | 97.1% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,319 psi | 60% | 2805 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 51,169 psi | 80% | 2851 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,585 psi | 70% | 2779 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 46,557 psi | 73% | 2828 fps | 95% |
| Rottweil R 905 | <<locked>> | 90% | 43,511 psi | 68% | 2818 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 41,814 psi | 66% | 2707 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,727 psi | 64% | 2687 fps | 97.7% |
| Shooters World Precision | <<locked>> | 80% | 49,298 psi | 77% | 2835 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,783 psi | 61% | 2661 fps | 96% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,064 psi | 72% | 2838 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,563 psi | 84% | 2927 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,093 psi | 72% | 2690 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,798 psi | 62% | 2628 fps | 96.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 43,105 psi | 68% | 2812 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 54,288 psi | 85% | 2828 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 45,092 psi | 71% | 2782 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 51,155 psi | 80% | 2877 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 34,011 psi | 53% | 2635 fps | 99.6% |
| Somchem S385 | <<locked>> | 86% | 38,508 psi | 60% | 2680 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 51,503 psi | 81% | 2812 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,619 psi | 81% | 2825 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,946 psi | 67% | 2707 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,957 psi | 61% | 2680 fps | 98.3% |
| Vihtavuori N165 | <<locked>> | 92% | 40,770 psi | 64% | 2720 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 49,922 psi | 78% | 2818 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,377 psi | 60% | 2680 fps | 98% |
| Vihtavuori N555 | <<locked>> | 80% | 29,530 psi | 46% | 2510 fps | 95.8% |
| Vihtavuori N560 | <<locked>> | 96% | 51,488 psi | 81% | 3028 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,232 psi | 60% | 2651 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 40,001 psi | 63% | 2740 fps | 96.2% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,222 psi | 40% | 2451 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,737 psi | 84% | 2933 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,671 psi | 68% | 2785 fps | 95.5% |
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 Weath. Mag. loaded with the .308 | 167gr | Peregrine VLR-4. Alliant Reloder-26 delivers the highest muzzle velocity at 3,156 fps; across all powders the maximum-charge window runs from 1,867 fps to 3,156 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 (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 167.0 gr projectile in 0.308" calls for a 1:11.0 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, Hodgdon H414 rank at the top here: for .300 Weath. Mag. with the .308 | 167gr | Peregrine VLR-4 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.