Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 160gr | Peregrine VRG-3 Lever bullet and 91 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 Alliant Reloder-16.
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% | 55,869 psi | 88% | 2940 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 57,740 psi | 90% | 3025 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 56,086 psi | 88% | 3064 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 56,405 psi | 88% | 2999 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,157 psi | 85% | 3058 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 56,840 psi | 89% | 3038 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 55,390 psi | 87% | 3107 fps | 98% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 57,014 psi | 89% | 3163 fps | 97.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,637 psi | 89% | 3169 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 57,682 psi | 90% | 3061 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,346 psi | 85% | 3028 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 55,274 psi | 87% | 3123 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 56,608 psi | 89% | 3146 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 54,911 psi | 86% | 3094 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,072 psi | 88% | 3156 fps | 98.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,924 psi | 83% | 3081 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,716 psi | 72% | 2995 fps | 99.1% |
| Alliant Reloder-26 | <<locked>> | 98% | 57,276 psi | 90% | 3228 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,256 psi | 80% | 3071 fps | 97.3% |
| Bofors RP3 | <<locked>> | 84% | 54,955 psi | 86% | 3025 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,072 psi | 88% | 3156 fps | 98.3% |
| Bofors RP7 | <<locked>> | 88% | 54,389 psi | 85% | 3009 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 84% | 55,201 psi | 87% | 3038 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 56,449 psi | 88% | 3114 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 56,028 psi | 88% | 3071 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 98% | 57,029 psi | 89% | 3100 fps | 96.5% |
| Hodgdon H4831 SC | <<locked>> | 98% | 55,869 psi | 88% | 3084 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,550 psi | 87% | 3041 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,811 psi | 89% | 3081 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,759 psi | 70% | 3025 fps | 96.4% |
| Hodgdon Superformance | <<locked>> | 90% | 57,232 psi | 90% | 3156 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,376 psi | 57% | 1923 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 57,334 psi | 90% | 3045 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,246 psi | 88% | 3022 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,201 psi | 87% | 3002 fps | 99.1% |
| IMR 4350 | <<locked>> | 92% | 55,535 psi | 87% | 3041 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,188 psi | 88% | 3041 fps | 99.1% |
| IMR 4831 | <<locked>> | 92% | 54,810 psi | 86% | 3051 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,796 psi | 87% | 3061 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 54,737 psi | 86% | 3028 fps | 96.2% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,201 psi | 85% | 3127 fps | 96.7% |
| Lovex S060 | <<locked>> | 82% | 57,551 psi | 90% | 3005 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 56,275 psi | 88% | 3012 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,188 psi | 88% | 3035 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 57,551 psi | 90% | 3077 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,340 psi | 73% | 2900 fps | 98.5% |
| Norma 201 | <<locked>> | 82% | 57,551 psi | 90% | 3022 fps | 100% |
| Norma 203B | <<locked>> | 84% | 57,145 psi | 90% | 3071 fps | 100% |
| Norma 204 | <<locked>> | 92% | 56,521 psi | 89% | 3097 fps | 98% |
| Norma MRP | <<locked>> | 98% | 55,869 psi | 88% | 3182 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 56,608 psi | 89% | 3100 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,534 psi | 85% | 3038 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,911 psi | 86% | 3150 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 92% | 55,492 psi | 87% | 3100 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,994 psi | 77% | 3012 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,956 psi | 58% | 1965 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,230 psi | 87% | 3022 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 56,101 psi | 88% | 3140 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,346 psi | 85% | 3084 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 56,666 psi | 89% | 3173 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,947 psi | 70% | 3025 fps | 97.6% |
| Rottweil R 902 | <<locked>> | 82% | 54,650 psi | 86% | 2969 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,998 psi | 86% | 3018 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,971 psi | 89% | 3074 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 96% | 54,128 psi | 85% | 3077 fps | 98% |
| Rottweil R 907 | <<locked>> | 88% | 54,389 psi | 85% | 3009 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,188 psi | 88% | 3035 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 56,275 psi | 88% | 3012 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 57,551 psi | 90% | 3077 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,898 psi | 89% | 3081 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,667 psi | 90% | 3058 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,941 psi | 88% | 2904 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,927 psi | 88% | 2986 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 57,305 psi | 90% | 3133 fps | 98.5% |
| Somchem S355 | <<locked>> | 86% | 54,882 psi | 86% | 3015 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 55,274 psi | 87% | 3009 fps | 96.1% |
| Somchem S365 | <<locked>> | 94% | 56,304 psi | 88% | 3104 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 54,549 psi | 85% | 3051 fps | 98.7% |
| Vihtavuori N135 | <<locked>> | 82% | 55,245 psi | 87% | 2930 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,463 psi | 87% | 2946 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,507 psi | 89% | 2992 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,100 psi | 86% | 3041 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,128 psi | 85% | 3025 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 84% | 57,217 psi | 90% | 2992 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,186 psi | 85% | 3041 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 98% | 55,114 psi | 86% | 3104 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 56,057 psi | 88% | 3173 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,955 psi | 86% | 3005 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,681 psi | 89% | 3120 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,573 psi | 76% | 3143 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,926 psi | 86% | 3048 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% | 52,315 psi | 82% | 2890 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,372 psi | 79% | 2900 fps | 97.8% |
| Accurate 3100 | <<locked>> | 88% | 36,680 psi | 57% | 2694 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 49,647 psi | 78% | 2897 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,942 psi | 59% | 2746 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 80% | 47,123 psi | 74% | 2874 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 45,353 psi | 71% | 2917 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 96% | 49,530 psi | 78% | 3025 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,547 psi | 82% | 3104 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,529 psi | 74% | 2897 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,836 psi | 80% | 2972 fps | 100% |
| Alliant Reloder-16 | 64.5 gr | 80% | 37,101 psi | 58% | 2759 fps | 98.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,424 psi | 66% | 2897 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 44,976 psi | 70% | 2907 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 42,525 psi | 67% | 2894 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,992 psi | 42% | 2484 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 92% | 35,070 psi | 55% | 2740 fps | 95.9% |
| Alliant Reloder-26 | 74.8 gr | 84% | 33,620 psi | 53% | 2740 fps | 96.1% |
| Bofors RP15 | <<locked>> | 96% | 44,744 psi | 70% | 2943 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 47,834 psi | 75% | 2904 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 42,525 psi | 67% | 2894 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 42,032 psi | 66% | 2769 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 48,414 psi | 76% | 2923 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 80% | 40,248 psi | 63% | 2802 fps | 96% |
| Hodgdon H4350 | <<locked>> | 80% | 43,047 psi | 67% | 2825 fps | 95.4% |
| Hodgdon H4831 | <<locked>> | 96% | 53,374 psi | 84% | 3038 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 52,040 psi | 82% | 3018 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,635 psi | 54% | 2648 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,084 psi | 83% | 3022 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,974 psi | 66% | 2959 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 39,175 psi | 61% | 2805 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,093 psi | 42% | 1719 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,635 psi | 84% | 2986 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,545 psi | 78% | 2910 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,866 psi | 81% | 2943 fps | 98.6% |
| IMR 4350 | <<locked>> | 82% | 40,306 psi | 63% | 2749 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,526 psi | 68% | 2802 fps | 96.8% |
| IMR 4831 | <<locked>> | 80% | 36,564 psi | 57% | 2697 fps | 97.6% |
| IMR 4895 | <<locked>> | 80% | 52,156 psi | 82% | 2999 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 51,474 psi | 81% | 2969 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 98% | 50,705 psi | 79% | 3064 fps | 95.8% |
| Lovex S060 | <<locked>> | 80% | 54,114 psi | 85% | 2949 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,632 psi | 78% | 2904 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,959 psi | 64% | 2749 fps | 97.5% |
| Lovex S070 | <<locked>> | 80% | 39,131 psi | 61% | 2723 fps | 95.9% |
| Lovex S071 | <<locked>> | 92% | 35,476 psi | 56% | 2664 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 54,041 psi | 85% | 2969 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,183 psi | 79% | 2956 fps | 100% |
| Norma 204 | <<locked>> | 86% | 45,934 psi | 72% | 2907 fps | 95.7% |
| Norma MRP | 76 gr | 88% | 38,841 psi | 61% | 2841 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 37,898 psi | 59% | 2743 fps | 97.8% |
| Ramshot Big Game | <<locked>> | 80% | 50,778 psi | 80% | 2979 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 47,239 psi | 74% | 3005 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 36,825 psi | 58% | 2726 fps | 95.7% |
| Ramshot Magnum | <<locked>> | 96% | 42,090 psi | 66% | 2871 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,528 psi | 43% | 1759 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,399 psi | 76% | 2904 fps | 98.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,150 psi | 71% | 2959 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,956 psi | 59% | 2766 fps | 97.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,767 psi | 58% | 2769 fps | 96.9% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,798 psi | 61% | 2871 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 51,517 psi | 81% | 2920 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,034 psi | 71% | 2848 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 50,140 psi | 79% | 2956 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 90% | 43,961 psi | 69% | 2884 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 42,032 psi | 66% | 2769 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,959 psi | 64% | 2749 fps | 97.5% |
| Shooters World Precision | <<locked>> | 80% | 49,632 psi | 78% | 2904 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,131 psi | 61% | 2723 fps | 95.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,528 psi | 73% | 2907 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 54,027 psi | 85% | 2999 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,311 psi | 73% | 2756 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,118 psi | 63% | 2690 fps | 96.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 43,569 psi | 68% | 2881 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 45,382 psi | 71% | 2848 fps | 99.9% |
| Somchem S361 | <<locked>> | 92% | 51,547 psi | 81% | 2943 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 34,389 psi | 54% | 2697 fps | 99.5% |
| Somchem S385 | <<locked>> | 88% | 41,669 psi | 65% | 2805 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 51,750 psi | 81% | 2881 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,069 psi | 82% | 2894 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,352 psi | 68% | 2776 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,305 psi | 62% | 2746 fps | 98.2% |
| Vihtavuori N165 | <<locked>> | 92% | 41,263 psi | 65% | 2785 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 50,401 psi | 79% | 2887 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,812 psi | 61% | 2746 fps | 97.8% |
| Vihtavuori N555 | <<locked>> | 80% | 29,776 psi | 47% | 2562 fps | 95.5% |
| Vihtavuori N560 | <<locked>> | 96% | 52,054 psi | 82% | 3100 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,609 psi | 61% | 2713 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 40,248 psi | 63% | 2802 fps | 96% |
| Winchester StaBALL HD | <<locked>> | 84% | 27,238 psi | 43% | 2579 fps | 96.3% |
| Winchester Supreme 780 | <<locked>> | 92% | 44,295 psi | 69% | 2854 fps | 95.4% |
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 98 powders for .300 Weath. Mag. loaded with the .308 | 160gr | Peregrine VRG-3 Lever. Alliant Reloder-26 delivers the highest muzzle velocity at 3,228 fps; across all powders the maximum-charge window runs from 1,923 fps to 3,228 fps. Accurate 3100 gives the best case fill at 100 %, and 98 of the 98 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 160.0 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, 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, Alliant Reloder-16 rank at the top here: for .300 Weath. Mag. with the .308 | 160gr | Peregrine VRG-3 Lever 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.