Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 135gr | Alaska Bullet Works Kodiak SP SPBC bullet and 92 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, ReloadSwiss RS 60 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.
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% | 55,347 psi | 89% | 3114 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 54,708 psi | 88% | 3136 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,115 psi | 90% | 3205 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 53,388 psi | 86% | 3123 fps | 96.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,861 psi | 74% | 3064 fps | 96.3% |
| Accurate 4064 | <<locked>> | 88% | 54,839 psi | 88% | 3189 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,390 psi | 89% | 3278 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 84% | 54,592 psi | 88% | 3215 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 90% | 55,724 psi | 89% | 3215 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 82% | 53,563 psi | 86% | 3166 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,621 psi | 88% | 3143 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,534 psi | 87% | 3340 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,246 psi | 90% | 3248 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 53,156 psi | 85% | 3209 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,014 psi | 90% | 3337 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 92% | 53,925 psi | 86% | 3314 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,236 psi | 69% | 3094 fps | 99% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,153 psi | 79% | 3284 fps | 98.5% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,607 psi | 88% | 3225 fps | 99.4% |
| Bofors RP3 | <<locked>> | 88% | 53,388 psi | 86% | 3202 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 53,243 psi | 85% | 3163 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,969 psi | 88% | 3146 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 53,098 psi | 85% | 3189 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,056 psi | 87% | 3209 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 94% | 54,157 psi | 87% | 3264 fps | 97.2% |
| Hodgdon H4350 | <<locked>> | 92% | 54,404 psi | 87% | 3225 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 84% | 55,158 psi | 88% | 3228 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 56,144 psi | 90% | 3258 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,172 psi | 88% | 3264 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 54,853 psi | 88% | 3301 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,650 psi | 57% | 2037 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 52,910 psi | 85% | 3173 fps | 99.8% |
| IMR 3031 | <<locked>> | 84% | 55,361 psi | 89% | 3215 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,158 psi | 88% | 3199 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,839 psi | 88% | 3173 fps | 97.2% |
| IMR 4350 | <<locked>> | 96% | 53,969 psi | 87% | 3192 fps | 96.5% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,085 psi | 88% | 3199 fps | 97.2% |
| IMR 4831 | <<locked>> | 98% | 55,709 psi | 89% | 3261 fps | 99.4% |
| IMR 4895 | <<locked>> | 86% | 54,476 psi | 87% | 3241 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 82% | 53,563 psi | 86% | 3166 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 54,694 psi | 88% | 3192 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 53,809 psi | 86% | 3140 fps | 99.8% |
| Lovex S062 | <<locked>> | 88% | 55,303 psi | 89% | 3199 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 54,723 psi | 88% | 3196 fps | 98.4% |
| Lovex S070 | <<locked>> | 96% | 55,985 psi | 90% | 3235 fps | 97.7% |
| Norma 201 | <<locked>> | 84% | 53,403 psi | 86% | 3159 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,085 psi | 87% | 3166 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,724 psi | 89% | 3248 fps | 99.9% |
| Norma URP | <<locked>> | 96% | 54,244 psi | 87% | 3261 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 86% | 52,823 psi | 85% | 3212 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 96% | 53,011 psi | 85% | 3248 fps | 97.8% |
| Ramshot TAC | <<locked>> | 82% | 53,795 psi | 86% | 3176 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 53,417 psi | 86% | 3196 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,332 psi | 58% | 2087 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,302 psi | 87% | 3189 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 53,664 psi | 86% | 3278 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 53,403 psi | 86% | 3314 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,042 psi | 88% | 3294 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,172 psi | 87% | 3320 fps | 99% |
| Rottweil R 901 | <<locked>> | 82% | 54,302 psi | 87% | 3146 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,056 psi | 87% | 3159 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 53,258 psi | 85% | 3192 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 92% | 53,243 psi | 85% | 3163 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 54,723 psi | 88% | 3196 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,694 psi | 88% | 3192 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,303 psi | 89% | 3199 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 55,985 psi | 90% | 3235 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,114 psi | 88% | 3258 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,057 psi | 90% | 3215 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 53,258 psi | 85% | 3182 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,636 psi | 88% | 3100 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,216 psi | 89% | 3097 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,998 psi | 88% | 3143 fps | 97.3% |
| Somchem S335 | <<locked>> | 84% | 54,157 psi | 87% | 3094 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,651 psi | 89% | 3205 fps | 99.8% |
| Somchem S355 | <<locked>> | 90% | 53,606 psi | 86% | 3192 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 56,405 psi | 90% | 3327 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,953 psi | 83% | 3182 fps | 96% |
| Vihtavuori N133 | <<locked>> | 84% | 54,998 psi | 88% | 3084 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 53,780 psi | 86% | 3123 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 54,447 psi | 87% | 3140 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,013 psi | 88% | 3169 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 52,910 psi | 85% | 3199 fps | 99% |
| Vihtavuori N530 | <<locked>> | 82% | 53,983 psi | 87% | 3166 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 56,318 psi | 90% | 3182 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,738 psi | 89% | 3258 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,153 psi | 77% | 3186 fps | 98.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 53,098 psi | 85% | 3169 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,041 psi | 87% | 3212 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 54,389 psi | 87% | 3268 fps | 97.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,914 psi | 62% | 3100 fps | 99% |
| Winchester StaBALL Match | <<locked>> | 84% | 53,171 psi | 85% | 3189 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% | 52,011 psi | 83% | 3061 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,005 psi | 72% | 2976 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,460 psi | 84% | 3146 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 49,980 psi | 80% | 3061 fps | 95.3% |
| Accurate 3100 | <<locked>> | 98% | 42,656 psi | 68% | 2999 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 42,554 psi | 68% | 2969 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 36,260 psi | 58% | 2881 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 48,095 psi | 77% | 3097 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 80% | 40,857 psi | 66% | 2923 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,169 psi | 80% | 3104 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 51,155 psi | 82% | 3094 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,266 psi | 71% | 3130 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,799 psi | 65% | 2946 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,714 psi | 70% | 3022 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 84% | 35,911 psi | 58% | 2890 fps | 95% |
| Alliant Reloder-17 | 65.4 gr | 80% | 35,520 psi | 57% | 2907 fps | 96.8% |
| Alliant Reloder-23 | <<locked>> | 92% | 33,518 psi | 54% | 2841 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 94% | 39,479 psi | 63% | 3061 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,558 psi | 76% | 3094 fps | 98.4% |
| Bofors RP3 | <<locked>> | 80% | 40,756 psi | 65% | 2953 fps | 98.7% |
| Bofors RP7 | <<locked>> | 90% | 50,067 psi | 80% | 3100 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,779 psi | 83% | 3094 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,676 psi | 80% | 3130 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,481 psi | 67% | 2959 fps | 96.2% |
| Hodgdon H414 | <<locked>> | 90% | 47,340 psi | 76% | 3133 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 90% | 51,155 psi | 82% | 3163 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 48,559 psi | 78% | 3107 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 33,185 psi | 53% | 2779 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,904 psi | 72% | 3074 fps | 99.4% |
| Hodgdon Superformance | <<locked>> | 90% | 47,297 psi | 76% | 3153 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,614 psi | 43% | 1824 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,499 psi | 75% | 3051 fps | 99.3% |
| IMR 3031 | <<locked>> | 80% | 48,559 psi | 78% | 3104 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,931 psi | 69% | 2966 fps | 98% |
| IMR 4166 Enduron | <<locked>> | 82% | 48,399 psi | 78% | 3051 fps | 95.8% |
| IMR 4350 | <<locked>> | 94% | 50,517 psi | 81% | 3130 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 48,617 psi | 78% | 3077 fps | 95.7% |
| IMR 4831 | <<locked>> | 86% | 37,376 psi | 60% | 2890 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 44,802 psi | 72% | 3054 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 80% | 50,169 psi | 80% | 3104 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 47,790 psi | 77% | 3074 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,645 psi | 76% | 3025 fps | 99.2% |
| Lovex S062 | <<locked>> | 80% | 42,946 psi | 69% | 2969 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 42,685 psi | 68% | 2956 fps | 95.7% |
| Lovex S070 | <<locked>> | 90% | 46,151 psi | 74% | 3048 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 47,181 psi | 76% | 3045 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 47,558 psi | 76% | 3051 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,076 psi | 69% | 3005 fps | 98.4% |
| Norma URP | <<locked>> | 86% | 38,754 psi | 62% | 2943 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 43,062 psi | 69% | 3022 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 90% | 43,366 psi | 70% | 3054 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 50,328 psi | 81% | 3114 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,082 psi | 80% | 3133 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,977 psi | 43% | 1867 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 44,512 psi | 71% | 2999 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,470 psi | 75% | 3140 fps | 98.5% |
| ReloadSwiss RS 60 | 65.4 gr | 80% | 37,797 psi | 61% | 2986 fps | 99.5% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 38,711 psi | 62% | 2963 fps | 95.6% |
| ReloadSwiss RS 70 | 73 gr | 88% | 41,060 psi | 66% | 3035 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 51,111 psi | 82% | 3094 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,817 psi | 72% | 2989 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 80% | 38,247 psi | 61% | 2887 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 90% | 50,067 psi | 80% | 3100 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 42,685 psi | 68% | 2956 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,790 psi | 77% | 3074 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,946 psi | 69% | 2969 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 90% | 46,151 psi | 74% | 3048 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,262 psi | 63% | 2940 fps | 97.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,718 psi | 78% | 3081 fps | 97.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,543 psi | 75% | 3054 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,124 psi | 77% | 2989 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,306 psi | 65% | 2835 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 48,022 psi | 77% | 3018 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 47,993 psi | 77% | 2992 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,385 psi | 78% | 3077 fps | 99.2% |
| Somchem S355 | <<locked>> | 80% | 39,030 psi | 63% | 2897 fps | 97.8% |
| Somchem S365 | <<locked>> | 80% | 28,529 psi | 46% | 2694 fps | 95.2% |
| Somchem S385 | <<locked>> | 98% | 48,747 psi | 78% | 3120 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 48,544 psi | 78% | 2982 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,454 psi | 71% | 2969 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,991 psi | 72% | 2976 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,057 psi | 59% | 2822 fps | 98.5% |
| Vihtavuori N160 | <<locked>> | 84% | 37,898 psi | 61% | 2887 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 50,459 psi | 81% | 3100 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 43,569 psi | 70% | 2963 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 37,362 psi | 60% | 2881 fps | 95% |
| Vihtavuori N555 | <<locked>> | 90% | 34,229 psi | 55% | 2867 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,837 psi | 53% | 2730 fps | 96% |
| Winchester 748 | <<locked>> | 80% | 50,546 psi | 81% | 3153 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 47,543 psi | 76% | 3136 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 94% | 31,850 psi | 51% | 2871 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,369 psi | 74% | 3064 fps | 99.3% |
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 92 powders for .300 Win. Mag. loaded with the .308 | 135gr | Alaska Bullet Works Kodiak SP SPBC. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,340 fps; across all powders the maximum-charge window runs from 2,037 fps to 3,340 fps. Accurate 3100 gives the best case fill at 100 %, and 92 of the 92 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 135.0 gr projectile in 0.308" calls for a 1:16.0 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, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .300 Win. Mag. with the .308 | 135gr | Alaska Bullet Works Kodiak SP SPBC 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.