Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 146.6gr | Sax KDG-S bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance 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 2015 | <<locked>> | 82% | 54,331 psi | 87% | 2976 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 53,127 psi | 85% | 2995 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,216 psi | 89% | 3071 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,086 psi | 90% | 3058 fps | 97.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,570 psi | 71% | 2936 fps | 96.5% |
| Accurate 4064 | <<locked>> | 88% | 53,548 psi | 86% | 3051 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,012 psi | 87% | 3136 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 84% | 53,722 psi | 86% | 3081 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 54,969 psi | 88% | 3084 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,101 psi | 90% | 3084 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 53,780 psi | 86% | 3009 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 53,925 psi | 86% | 3209 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,245 psi | 89% | 3107 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,709 psi | 89% | 3130 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,274 psi | 89% | 3205 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 92% | 52,924 psi | 85% | 3179 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,293 psi | 68% | 2969 fps | 99.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,935 psi | 77% | 3153 fps | 98.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 53,867 psi | 86% | 3097 fps | 99.5% |
| Bofors RP3 | <<locked>> | 90% | 55,912 psi | 90% | 3123 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,970 psi | 90% | 3094 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,157 psi | 87% | 3015 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,927 psi | 90% | 3114 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 53,084 psi | 85% | 3077 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 94% | 53,185 psi | 85% | 3130 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 92% | 53,708 psi | 86% | 3097 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 84% | 54,273 psi | 87% | 3094 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,361 psi | 89% | 3127 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,360 psi | 87% | 3130 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 53,824 psi | 86% | 3169 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,592 psi | 57% | 1939 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,637 psi | 89% | 3097 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,679 psi | 88% | 3081 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,476 psi | 87% | 3068 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,099 psi | 87% | 3041 fps | 97.6% |
| IMR 4350 | <<locked>> | 96% | 52,968 psi | 85% | 3064 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,215 psi | 87% | 3071 fps | 97.5% |
| IMR 4831 | <<locked>> | 98% | 54,607 psi | 88% | 3130 fps | 99.6% |
| IMR 4895 | <<locked>> | 86% | 53,505 psi | 86% | 3104 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 56,101 psi | 90% | 3084 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 53,563 psi | 86% | 3054 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 53,301 psi | 85% | 3012 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 54,201 psi | 87% | 3061 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 53,693 psi | 86% | 3064 fps | 98.6% |
| Lovex S070 | <<locked>> | 96% | 54,752 psi | 88% | 3100 fps | 97.9% |
| Norma 201 | <<locked>> | 86% | 55,753 psi | 89% | 3077 fps | 100% |
| Norma 202 | <<locked>> | 84% | 53,040 psi | 85% | 3028 fps | 100% |
| Norma 203B | <<locked>> | 88% | 54,911 psi | 88% | 3117 fps | 99.9% |
| Norma MRPᴾ | <<locked>> | 100% | 47,601 psi | 76% | 3104 fps | 96.1% |
| Norma URP | <<locked>> | 96% | 53,026 psi | 85% | 3127 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 88% | 55,709 psi | 89% | 3143 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 98% | 55,869 psi | 90% | 3182 fps | 98.7% |
| Ramshot TAC | <<locked>> | 82% | 52,910 psi | 85% | 3045 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 84% | 56,434 psi | 90% | 3127 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,100 psi | 58% | 1982 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 53,359 psi | 86% | 3058 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 52,750 psi | 85% | 3143 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 56,434 psi | 90% | 3241 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 53,998 psi | 87% | 3159 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 53,229 psi | 85% | 3189 fps | 99.2% |
| Rottweil R 901 | <<locked>> | 84% | 56,347 psi | 90% | 3058 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 52,895 psi | 85% | 3022 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,767 psi | 89% | 3117 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 55,970 psi | 90% | 3094 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 94% | 53,693 psi | 86% | 3064 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 53,563 psi | 86% | 3054 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 54,201 psi | 87% | 3061 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,752 psi | 88% | 3100 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,027 psi | 87% | 3120 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,129 psi | 88% | 3084 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,898 psi | 90% | 3107 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 53,867 psi | 86% | 2966 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,505 psi | 87% | 2966 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 53,954 psi | 87% | 3015 fps | 97.6% |
| Somchem S335 | <<locked>> | 84% | 53,301 psi | 85% | 2959 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,868 psi | 88% | 3074 fps | 99.9% |
| Somchem S355 | <<locked>> | 92% | 56,043 psi | 90% | 3114 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,303 psi | 89% | 3186 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,952 psi | 82% | 3058 fps | 96.4% |
| Vihtavuori N133 | <<locked>> | 84% | 54,288 psi | 87% | 2953 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 53,040 psi | 85% | 2992 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 53,679 psi | 86% | 3005 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 53,940 psi | 86% | 3038 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,564 psi | 89% | 3123 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 82% | 53,026 psi | 85% | 3028 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,419 psi | 89% | 3051 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,752 psi | 88% | 3130 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,775 psi | 75% | 3051 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,898 psi | 90% | 3100 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 53,330 psi | 86% | 3081 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 53,417 psi | 86% | 3136 fps | 97.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,898 psi | 61% | 2979 fps | 99.3% |
| Winchester StaBALL Match | <<locked>> | 86% | 55,985 psi | 90% | 3117 fps | 100% |
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% | 50,995 psi | 82% | 2927 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,468 psi | 70% | 2838 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,343 psi | 82% | 3009 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 48,979 psi | 79% | 2930 fps | 95.6% |
| Accurate 3100 | <<locked>> | 98% | 41,437 psi | 66% | 2874 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 41,118 psi | 66% | 2831 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 35,070 psi | 56% | 2753 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 47,297 psi | 76% | 2966 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 80% | 40,205 psi | 64% | 2802 fps | 97.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,472 psi | 79% | 2976 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,357 psi | 81% | 2959 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,337 psi | 69% | 2999 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,885 psi | 64% | 2822 fps | 98.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,859 psi | 69% | 2894 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 84% | 35,128 psi | 56% | 2772 fps | 95.5% |
| Alliant Reloder-17 | 62 gr | 80% | 34,621 psi | 56% | 2785 fps | 97.1% |
| Alliant Reloder-23 | <<locked>> | 90% | 30,472 psi | 49% | 2661 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 94% | 38,276 psi | 61% | 2930 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,891 psi | 75% | 2969 fps | 98.6% |
| Bofors RP3 | <<locked>> | 80% | 39,581 psi | 63% | 2825 fps | 98.8% |
| Bofors RP7 | <<locked>> | 88% | 46,093 psi | 74% | 2917 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,024 psi | 82% | 2959 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,602 psi | 78% | 2995 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,495 psi | 65% | 2831 fps | 96.6% |
| Hodgdon H414 | <<locked>> | 88% | 43,410 psi | 70% | 2943 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 90% | 50,314 psi | 81% | 3035 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 47,790 psi | 77% | 2979 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 30,226 psi | 48% | 2602 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,990 psi | 71% | 2943 fps | 99.5% |
| Hodgdon Superformance | 73.7 gr | 90% | 46,354 psi | 74% | 3025 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,411 psi | 42% | 1732 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,818 psi | 73% | 2923 fps | 99.5% |
| IMR 3031 | <<locked>> | 80% | 47,761 psi | 77% | 2972 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,235 psi | 68% | 2841 fps | 98.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,686 psi | 72% | 2864 fps | 95.4% |
| IMR 4350 | <<locked>> | 92% | 46,644 psi | 75% | 2946 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 45,078 psi | 72% | 2897 fps | 95.4% |
| IMR 4831 | <<locked>> | 84% | 33,997 psi | 55% | 2707 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 43,976 psi | 71% | 2927 fps | 99% |
| IMR 8208 XBR | <<locked>> | 80% | 49,472 psi | 79% | 2976 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,746 psi | 75% | 2940 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,007 psi | 75% | 2897 fps | 99.4% |
| Lovex S062 | <<locked>> | 80% | 42,076 psi | 67% | 2838 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 39,189 psi | 63% | 2772 fps | 95.2% |
| Lovex S070 | <<locked>> | 88% | 42,395 psi | 68% | 2864 fps | 95% |
| Norma 201 | <<locked>> | 80% | 46,064 psi | 74% | 2910 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 46,586 psi | 75% | 2920 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,250 psi | 68% | 2881 fps | 98.6% |
| Norma MRP | <<locked>> | 98% | 44,251 psi | 71% | 3031 fps | 95% |
| Norma URP | <<locked>> | 84% | 35,491 psi | 57% | 2759 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 42,076 psi | 67% | 2890 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 90% | 42,337 psi | 68% | 2927 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 49,443 psi | 79% | 2982 fps | 98.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,124 psi | 79% | 3002 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,789 psi | 43% | 1775 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 43,685 psi | 70% | 2874 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,658 psi | 73% | 3009 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,927 psi | 59% | 2861 fps | 99.6% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 37,739 psi | 61% | 2838 fps | 95.9% |
| ReloadSwiss RS 70 | 67.7 gr | 86% | 37,521 psi | 60% | 2844 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 49,864 psi | 80% | 2953 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,874 psi | 70% | 2858 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 37,318 psi | 60% | 2766 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 88% | 46,093 psi | 74% | 2917 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 84% | 39,189 psi | 63% | 2772 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,746 psi | 75% | 2940 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,076 psi | 67% | 2838 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 88% | 42,395 psi | 68% | 2864 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,450 psi | 62% | 2818 fps | 97.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,848 psi | 77% | 2953 fps | 98.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,803 psi | 73% | 2930 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,442 psi | 76% | 2864 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,610 psi | 64% | 2713 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 44,048 psi | 71% | 2831 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 47,007 psi | 75% | 2861 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,703 psi | 76% | 2953 fps | 99.4% |
| Somchem S355 | <<locked>> | 80% | 37,985 psi | 61% | 2769 fps | 98.1% |
| Somchem S365 | <<locked>> | 80% | 27,630 psi | 44% | 2575 fps | 95.5% |
| Somchem S385 | <<locked>> | 98% | 47,616 psi | 76% | 2995 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 47,906 psi | 77% | 2854 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,656 psi | 70% | 2841 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,324 psi | 71% | 2848 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,289 psi | 58% | 2703 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 84% | 36,956 psi | 59% | 2762 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 49,559 psi | 79% | 2969 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,670 psi | 68% | 2835 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 36,477 psi | 58% | 2762 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 90% | 33,199 psi | 53% | 2746 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,082 psi | 51% | 2615 fps | 96.4% |
| Winchester 748 | <<locked>> | 80% | 49,864 psi | 80% | 3022 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 43,613 psi | 70% | 2946 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 94% | 30,821 psi | 49% | 2753 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,484 psi | 73% | 2933 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 93 powders for .300 Win. Mag. loaded with the .308 | 146.6gr | Sax KDG-S. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,241 fps; across all powders the maximum-charge window runs from 1,939 fps to 3,241 fps. Accurate 3100 gives the best case fill at 100 %, and 93 of the 93 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 146.6 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 Win. Mag. with the .308 | 146.6gr | Sax KDG-S 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.