Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 140gr | Lehigh Defense Controlled Chaos bullet and 92 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 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.
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 2015 | <<locked>> | 82% | 55,709 psi | 89% | 3064 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,071 psi | 88% | 3087 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 53,635 psi | 86% | 3077 fps | 96.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,050 psi | 74% | 3022 fps | 96.6% |
| Accurate 4064 | <<locked>> | 88% | 55,245 psi | 89% | 3140 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,680 psi | 89% | 3228 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 84% | 54,897 psi | 88% | 3169 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 56,115 psi | 90% | 3169 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 53,766 psi | 86% | 3114 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,839 psi | 88% | 3091 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,926 psi | 88% | 3294 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 53,084 psi | 85% | 3140 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 53,272 psi | 85% | 3156 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 96% | 52,997 psi | 85% | 3228 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,244 psi | 87% | 3268 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,555 psi | 70% | 3054 fps | 99.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,545 psi | 79% | 3245 fps | 98.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,897 psi | 88% | 3179 fps | 99.5% |
| Bofors RP3 | <<locked>> | 88% | 53,693 psi | 86% | 3153 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 53,519 psi | 86% | 3117 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,158 psi | 88% | 3097 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 53,505 psi | 86% | 3143 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,346 psi | 87% | 3163 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 94% | 54,462 psi | 87% | 3215 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 92% | 54,795 psi | 88% | 3179 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 84% | 55,463 psi | 89% | 3179 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 52,997 psi | 85% | 3153 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,463 psi | 89% | 3215 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 54,955 psi | 88% | 3251 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,723 psi | 57% | 1995 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 53,185 psi | 85% | 3123 fps | 99.9% |
| IMR 3031 | <<locked>> | 84% | 55,854 psi | 90% | 3166 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,535 psi | 89% | 3150 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,201 psi | 89% | 3127 fps | 97.5% |
| IMR 4350 | <<locked>> | 96% | 54,186 psi | 87% | 3146 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,376 psi | 89% | 3153 fps | 97.5% |
| IMR 4831 | <<locked>> | 98% | 56,028 psi | 90% | 3215 fps | 99.6% |
| IMR 4895 | <<locked>> | 86% | 54,665 psi | 88% | 3189 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 82% | 53,766 psi | 86% | 3114 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,114 psi | 88% | 3143 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,230 psi | 87% | 3091 fps | 99.8% |
| Lovex S062 | <<locked>> | 88% | 55,434 psi | 89% | 3146 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,056 psi | 88% | 3150 fps | 98.6% |
| Lovex S070 | <<locked>> | 96% | 56,217 psi | 90% | 3186 fps | 97.9% |
| Norma 201 | <<locked>> | 84% | 53,664 psi | 86% | 3110 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,331 psi | 87% | 3114 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,188 psi | 90% | 3202 fps | 99.9% |
| Norma MRPᴾ | <<locked>> | 100% | 48,805 psi | 78% | 3189 fps | 96.1% |
| Norma URP | <<locked>> | 96% | 54,462 psi | 87% | 3212 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 86% | 53,185 psi | 85% | 3166 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 96% | 53,388 psi | 86% | 3202 fps | 98.1% |
| Ramshot TAC | <<locked>> | 82% | 54,041 psi | 87% | 3127 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 53,867 psi | 86% | 3150 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,260 psi | 58% | 2041 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,650 psi | 88% | 3146 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 53,853 psi | 86% | 3228 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 53,824 psi | 86% | 3268 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,506 psi | 89% | 3248 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,636 psi | 88% | 3278 fps | 99.2% |
| Rottweil R 901 | <<locked>> | 82% | 54,636 psi | 88% | 3097 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,317 psi | 87% | 3110 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 53,751 psi | 86% | 3146 fps | 100% |
| Rottweil R 907 | <<locked>> | 92% | 53,519 psi | 86% | 3117 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,056 psi | 88% | 3150 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,114 psi | 88% | 3143 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,434 psi | 89% | 3146 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,217 psi | 90% | 3186 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,259 psi | 89% | 3205 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,347 psi | 90% | 3166 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 53,403 psi | 86% | 3133 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,766 psi | 88% | 3045 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,535 psi | 89% | 3045 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,114 psi | 88% | 3094 fps | 97.5% |
| Somchem S335 | <<locked>> | 84% | 54,404 psi | 87% | 3041 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,956 psi | 90% | 3156 fps | 99.9% |
| Somchem S355 | <<locked>> | 90% | 53,795 psi | 86% | 3143 fps | 99.9% |
| Somchem S365 | <<locked>> | 98% | 52,881 psi | 85% | 3215 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,388 psi | 84% | 3143 fps | 96.4% |
| Vihtavuori N133 | <<locked>> | 84% | 55,143 psi | 88% | 3031 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,288 psi | 87% | 3077 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 54,795 psi | 88% | 3087 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,347 psi | 89% | 3120 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 53,330 psi | 86% | 3153 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 82% | 54,244 psi | 87% | 3114 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 53,214 psi | 85% | 3084 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,028 psi | 90% | 3212 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,298 psi | 77% | 3140 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 53,258 psi | 85% | 3123 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,462 psi | 87% | 3163 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 54,679 psi | 88% | 3222 fps | 97.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,131 psi | 63% | 3064 fps | 99.3% |
| Winchester StaBALL Match | <<locked>> | 84% | 53,388 psi | 86% | 3140 fps | 99.9% |
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 2015 | <<locked>> | 80% | 52,272 psi | 84% | 3012 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,150 psi | 72% | 2927 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 50,183 psi | 80% | 3015 fps | 95.6% |
| Accurate 3100 | <<locked>> | 98% | 43,004 psi | 69% | 2959 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 42,685 psi | 68% | 2920 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 36,535 psi | 59% | 2841 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 48,472 psi | 78% | 3048 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 80% | 41,118 psi | 66% | 2881 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,517 psi | 81% | 3058 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 51,503 psi | 83% | 3041 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,411 psi | 71% | 3084 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,118 psi | 66% | 2907 fps | 98.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,048 psi | 71% | 2979 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 84% | 36,085 psi | 58% | 2851 fps | 95.5% |
| Alliant Reloder-17 | 64.1 gr | 80% | 35,766 psi | 57% | 2871 fps | 97.2% |
| Alliant Reloder-23 | <<locked>> | 90% | 31,633 psi | 51% | 2743 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 92% | 36,999 psi | 59% | 2949 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,935 psi | 77% | 3051 fps | 98.6% |
| Bofors RP3 | <<locked>> | 80% | 40,959 psi | 66% | 2910 fps | 98.9% |
| Bofors RP7 | <<locked>> | 88% | 47,181 psi | 76% | 2995 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,837 psi | 83% | 3041 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,806 psi | 80% | 3077 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,655 psi | 67% | 2913 fps | 96.6% |
| Hodgdon H414 | 68.9 gr | 88% | 44,527 psi | 71% | 3025 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 90% | 51,271 psi | 82% | 3114 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 48,936 psi | 78% | 3061 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 31,198 psi | 50% | 2677 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,194 psi | 72% | 3028 fps | 99.5% |
| Hodgdon Superformance | <<locked>> | 90% | 47,659 psi | 76% | 3114 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,687 psi | 43% | 1788 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,876 psi | 75% | 3009 fps | 99.4% |
| IMR 3031 | <<locked>> | 80% | 48,892 psi | 78% | 3054 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,207 psi | 69% | 2920 fps | 98.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,643 psi | 73% | 2943 fps | 95.3% |
| IMR 4350 | <<locked>> | 92% | 47,616 psi | 76% | 3025 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 46,050 psi | 74% | 2976 fps | 95.3% |
| IMR 4831 | <<locked>> | 84% | 35,288 psi | 57% | 2792 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 45,165 psi | 72% | 3012 fps | 99% |
| IMR 8208 XBR | <<locked>> | 80% | 50,517 psi | 81% | 3058 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 48,022 psi | 77% | 3025 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,906 psi | 77% | 2979 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 43,236 psi | 69% | 2923 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 40,321 psi | 65% | 2854 fps | 95.2% |
| Lovex S070 | <<locked>> | 88% | 43,555 psi | 70% | 2943 fps | 95% |
| Norma 201 | <<locked>> | 80% | 47,268 psi | 76% | 2995 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 47,848 psi | 77% | 3005 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,439 psi | 70% | 2963 fps | 98.6% |
| Norma MRP | <<locked>> | 98% | 45,701 psi | 73% | 3120 fps | 95.2% |
| Norma URP | <<locked>> | 84% | 36,550 psi | 59% | 2841 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 43,207 psi | 69% | 2976 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 90% | 43,497 psi | 70% | 3009 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 50,430 psi | 81% | 3061 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,198 psi | 80% | 3084 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,079 psi | 43% | 1831 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 44,773 psi | 72% | 2956 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,963 psi | 75% | 3097 fps | 98.8% |
| ReloadSwiss RS 60 | 64.1 gr | 80% | 38,043 psi | 61% | 2946 fps | 99.6% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 36,318 psi | 58% | 2858 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 38,508 psi | 62% | 2927 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 51,329 psi | 82% | 3041 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,136 psi | 72% | 2946 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 38,551 psi | 62% | 2848 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 88% | 47,181 psi | 76% | 2995 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 84% | 40,321 psi | 65% | 2854 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,022 psi | 77% | 3025 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,236 psi | 69% | 2923 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 88% | 43,555 psi | 70% | 2943 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,653 psi | 64% | 2904 fps | 97.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,037 psi | 79% | 3038 fps | 98.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,992 psi | 75% | 3015 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,312 psi | 77% | 2940 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,466 psi | 65% | 2792 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 45,266 psi | 73% | 2913 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 48,080 psi | 77% | 2940 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,762 psi | 78% | 3035 fps | 99.4% |
| Somchem S355 | <<locked>> | 80% | 39,131 psi | 63% | 2851 fps | 98.1% |
| Somchem S365 | <<locked>> | 80% | 28,660 psi | 46% | 2657 fps | 95.7% |
| Somchem S385 | <<locked>> | 98% | 48,863 psi | 78% | 3077 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 48,733 psi | 78% | 2933 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,730 psi | 72% | 2920 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,281 psi | 73% | 2930 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,318 psi | 60% | 2782 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 82% | 35,694 psi | 57% | 2785 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 50,633 psi | 81% | 3051 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,787 psi | 70% | 2917 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 37,652 psi | 60% | 2844 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 90% | 34,606 psi | 55% | 2835 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,054 psi | 53% | 2694 fps | 96.5% |
| Winchester 748 | <<locked>> | 80% | 50,850 psi | 82% | 3104 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 44,730 psi | 72% | 3028 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 94% | 32,068 psi | 51% | 2841 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,673 psi | 75% | 3018 fps | 99.5% |
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 112 powders for .300 Win. Mag. loaded with the .308 | 140gr | Lehigh Defense Controlled Chaos. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,294 fps; across all powders the maximum-charge window runs from 1,995 fps to 3,294 fps. Accurate 3100 gives the best case fill at 100 %, and 112 of the 112 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 140.0 gr projectile in 0.308" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, ADI AR 2213 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-17, ReloadSwiss RS 60, Hodgdon H414 rank at the top here: for .300 Win. Mag. with the .308 | 140gr | Lehigh Defense Controlled Chaos they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Alliant Reloder-22, Alliant Reloder-25 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.