Load Specifications
Load data in caliber .300 WSM with .308 | 139gr | IBEX TRD 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 Power Pro 2000-MR, 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>> | 84% | 56,231 psi | 88% | 3038 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 56,086 psi | 88% | 3071 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 55,071 psi | 86% | 3110 fps | 100% |
| Accurate 4064 | <<locked>> | 90% | 55,709 psi | 87% | 3114 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 54,578 psi | 86% | 3179 fps | 98.8% |
| ADI AR 2206H | <<locked>> | 86% | 55,100 psi | 86% | 3133 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 92% | 55,695 psi | 87% | 3123 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 86% | 57,290 psi | 90% | 3136 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 54,520 psi | 85% | 3064 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 54,128 psi | 85% | 3241 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 55,985 psi | 88% | 3153 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 90% | 56,637 psi | 89% | 3176 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 55,143 psi | 86% | 3232 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 96% | 56,478 psi | 89% | 3274 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,379 psi | 63% | 2946 fps | 97.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,063 psi | 71% | 3110 fps | 96.6% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 54,491 psi | 85% | 3136 fps | 98.9% |
| Bofors RP3 | <<locked>> | 92% | 57,072 psi | 89% | 3176 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 56,956 psi | 89% | 3130 fps | 96.2% |
| Hodgdon Benchmark | <<locked>> | 84% | 55,448 psi | 87% | 3061 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 57,072 psi | 89% | 3169 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 54,853 psi | 86% | 3209 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 84% | 56,985 psi | 89% | 3120 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 54,317 psi | 85% | 3123 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 94% | 54,955 psi | 86% | 3189 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 86% | 55,651 psi | 87% | 3146 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 51,663 psi | 81% | 3104 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,694 psi | 86% | 3173 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,781 psi | 56% | 1949 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 55,390 psi | 87% | 3127 fps | 99.8% |
| IMR 3031 | <<locked>> | 90% | 57,232 psi | 90% | 3163 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 54,650 psi | 86% | 3097 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 94% | 57,290 psi | 90% | 3110 fps | 96.8% |
| IMR 4350ᴾ | <<locked>> | 100% | 56,594 psi | 89% | 3143 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 94% | 54,853 psi | 86% | 3100 fps | 96.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,008 psi | 77% | 3064 fps | 98% |
| IMR 4895 | <<locked>> | 88% | 54,563 psi | 86% | 3153 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 86% | 57,290 psi | 90% | 3136 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 55,071 psi | 86% | 3110 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 57,667 psi | 90% | 3104 fps | 99.7% |
| Lovex S062 | <<locked>> | 90% | 55,521 psi | 87% | 3114 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 54,723 psi | 86% | 3100 fps | 97.7% |
| Lovex S070 | <<locked>> | 98% | 55,695 psi | 87% | 3136 fps | 96.8% |
| Norma 201 | <<locked>> | 88% | 57,566 psi | 90% | 3133 fps | 100% |
| Norma 202 | <<locked>> | 88% | 57,653 psi | 90% | 3133 fps | 100% |
| Norma 203B | <<locked>> | 90% | 55,883 psi | 88% | 3163 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 56,550 psi | 89% | 3215 fps | 99% |
| Ramshot Big Game | <<locked>> | 90% | 56,188 psi | 88% | 3182 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 55,492 psi | 87% | 3205 fps | 97.5% |
| Ramshot TAC | <<locked>> | 86% | 57,566 psi | 90% | 3146 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 86% | 57,348 psi | 90% | 3173 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 82% | 54,752 psi | 86% | 3077 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,245 psi | 57% | 1991 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 56,579 psi | 89% | 3114 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 54,317 psi | 85% | 3094 fps | 96.9% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 56,898 psi | 89% | 3248 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 56,231 psi | 88% | 3281 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 57,479 psi | 90% | 3255 fps | 99% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 57,145 psi | 90% | 3278 fps | 98.7% |
| Rottweil R 901 | <<locked>> | 84% | 55,637 psi | 87% | 3071 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,868 psi | 86% | 3081 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 94% | 56,826 psi | 89% | 3163 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 96% | 56,956 psi | 89% | 3130 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 96% | 54,723 psi | 86% | 3100 fps | 97.7% |
| Shooters World Match Rifle | <<locked>> | 86% | 55,071 psi | 86% | 3110 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,521 psi | 87% | 3114 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 55,695 psi | 87% | 3136 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 54,505 psi | 85% | 3163 fps | 99.5% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 56,434 psi | 88% | 3127 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 56,797 psi | 89% | 3153 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,332 psi | 87% | 3018 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 55,216 psi | 87% | 3012 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 55,100 psi | 86% | 3048 fps | 96.4% |
| Somchem S321 | <<locked>> | 82% | 55,274 psi | 87% | 3117 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 54,955 psi | 86% | 3015 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 55,666 psi | 87% | 3117 fps | 99.6% |
| Somchem S355 | <<locked>> | 94% | 56,927 psi | 89% | 3159 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 51,155 psi | 80% | 3166 fps | 100% |
| Unknown powder | <<locked>> | 98% | 57,653 psi | 90% | 3222 fps | 98.7% |
| Vihtavuori N130 | <<locked>> | 84% | 57,203 psi | 90% | 3015 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 54,563 psi | 86% | 2995 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 57,551 psi | 90% | 3097 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 57,377 psi | 90% | 3100 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 54,824 psi | 86% | 3087 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,824 psi | 86% | 3136 fps | 98.7% |
| Vihtavuori N530 | <<locked>> | 84% | 57,014 psi | 89% | 3143 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 57,029 psi | 89% | 3127 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,303 psi | 87% | 3192 fps | 98.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,961 psi | 69% | 3031 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 56,072 psi | 88% | 3133 fps | 99.9% |
| Winchester 748 | <<locked>> | 82% | 54,708 psi | 86% | 3140 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 54,955 psi | 86% | 3189 fps | 96.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,579 psi | 57% | 2933 fps | 97.1% |
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% | 49,995 psi | 78% | 2940 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,005 psi | 69% | 2874 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 48,240 psi | 76% | 2999 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 41,452 psi | 65% | 2864 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 39,392 psi | 62% | 2884 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 45,948 psi | 72% | 2963 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 80% | 39,189 psi | 61% | 2795 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,819 psi | 75% | 2972 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 80% | 48,109 psi | 75% | 2966 fps | 100% |
| Alliant Power Pro 2000-MR | 57.9 gr | 80% | 41,655 psi | 65% | 2979 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,088 psi | 61% | 2825 fps | 97.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,872 psi | 66% | 2894 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 88% | 38,827 psi | 61% | 2884 fps | 95.3% |
| Alliant Reloder-17 | 57 gr | 80% | 33,895 psi | 53% | 2776 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 94% | 33,982 psi | 53% | 2776 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 98% | 42,105 psi | 66% | 3041 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,889 psi | 70% | 2956 fps | 97.2% |
| Bofors RP3 | <<locked>> | 80% | 39,218 psi | 61% | 2838 fps | 97.8% |
| Bofors RP7 | <<locked>> | 94% | 53,447 psi | 84% | 3068 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,530 psi | 78% | 2963 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,963 psi | 74% | 2995 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 51,184 psi | 80% | 3143 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 80% | 50,589 psi | 79% | 3018 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 42,380 psi | 66% | 2890 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 92% | 51,329 psi | 80% | 3127 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 46,412 psi | 73% | 2976 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 33,939 psi | 53% | 2720 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,958 psi | 63% | 2887 fps | 98% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,760 psi | 42% | 1742 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,133 psi | 64% | 2851 fps | 97.8% |
| IMR 3031 | <<locked>> | 80% | 42,206 psi | 66% | 2907 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,595 psi | 60% | 2776 fps | 96.1% |
| IMR 4166 Enduron | <<locked>> | 90% | 51,082 psi | 80% | 3005 fps | 95.6% |
| IMR 4350 | <<locked>> | 98% | 53,432 psi | 84% | 3091 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 92% | 51,851 psi | 81% | 3045 fps | 95.6% |
| IMR 4831 | <<locked>> | 92% | 38,653 psi | 61% | 2848 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 42,815 psi | 67% | 2927 fps | 97.8% |
| IMR 8208 XBR | <<locked>> | 80% | 47,819 psi | 75% | 2972 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 45,469 psi | 71% | 2949 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 45,687 psi | 72% | 2890 fps | 98.4% |
| Lovex S062 | <<locked>> | 80% | 41,452 psi | 65% | 2848 fps | 98.6% |
| Lovex S065 | <<locked>> | 88% | 43,395 psi | 68% | 2881 fps | 95.1% |
| Lovex S070 | <<locked>> | 94% | 49,414 psi | 77% | 3022 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 45,513 psi | 71% | 2920 fps | 99.2% |
| Norma 202 | <<locked>> | 80% | 45,411 psi | 71% | 2927 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,292 psi | 65% | 2881 fps | 97.4% |
| Norma URP | <<locked>> | 88% | 39,146 psi | 61% | 2874 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 40,495 psi | 63% | 2884 fps | 97% |
| Ramshot Hunter | <<locked>> | 94% | 45,992 psi | 72% | 3025 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 47,688 psi | 75% | 2966 fps | 96.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,253 psi | 74% | 2992 fps | 98.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,387 psi | 81% | 3018 fps | 99.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,253 psi | 43% | 1788 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 53,156 psi | 83% | 3058 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 48,051 psi | 75% | 2982 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,671 psi | 68% | 2999 fps | 97.4% |
| ReloadSwiss RS 60 | 57 gr | 80% | 35,868 psi | 56% | 2851 fps | 98.5% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 41,365 psi | 65% | 2949 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 43,990 psi | 69% | 3015 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 49,893 psi | 78% | 2976 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,366 psi | 68% | 2867 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 80% | 36,999 psi | 58% | 2776 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 94% | 53,447 psi | 84% | 3068 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 43,395 psi | 68% | 2881 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,469 psi | 71% | 2949 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 41,452 psi | 65% | 2848 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 94% | 49,414 psi | 77% | 3022 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,405 psi | 59% | 2818 fps | 96.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,412 psi | 73% | 2943 fps | 96.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,425 psi | 70% | 2927 fps | 98.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,253 psi | 72% | 2867 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,740 psi | 61% | 2720 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 48,675 psi | 76% | 2933 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 51,764 psi | 81% | 3058 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 46,195 psi | 72% | 2871 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,803 psi | 72% | 2940 fps | 98.3% |
| Somchem S355 | <<locked>> | 80% | 37,594 psi | 59% | 2779 fps | 96.9% |
| Somchem S365 | <<locked>> | 82% | 29,544 psi | 46% | 2651 fps | 95% |
| Unknown powder | <<locked>> | 88% | 42,221 psi | 66% | 2933 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 50,923 psi | 80% | 2920 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,685 psi | 68% | 2815 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,569 psi | 67% | 2851 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,380 psi | 66% | 2844 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,314 psi | 51% | 2625 fps | 96.6% |
| Vihtavuori N160 | <<locked>> | 86% | 39,972 psi | 63% | 2851 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 50,343 psi | 79% | 3028 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 42,264 psi | 66% | 2867 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 40,466 psi | 63% | 2897 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 94% | 36,593 psi | 57% | 2861 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 33,823 psi | 53% | 2674 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 51,126 psi | 80% | 3081 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 51,329 psi | 80% | 3127 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 98% | 34,476 psi | 54% | 2864 fps | 95.9% |
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 WSM loaded with the .308 | 139gr | IBEX TRD. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,281 fps; across all powders the maximum-charge window runs from 1,949 fps to 3,281 fps. Alliant Reloder-16 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 (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.308" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-16, 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .300 WSM with the .308 | 139gr | IBEX TRD 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.