Load Specifications
Load data in caliber .300 WSM with .308 | 123gr | Sako Gamehead 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 Power Pro 2000-MR, ReloadSwiss RS 60 and ReloadSwiss RS 52.
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>> | 88% | 55,927 psi | 88% | 3235 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 54,534 psi | 85% | 3255 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 57,580 psi | 90% | 3301 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 56,463 psi | 88% | 3323 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 57,334 psi | 90% | 3343 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,603 psi | 78% | 3274 fps | 97% |
| Accurate LT-30 | <<locked>> | 82% | 55,158 psi | 86% | 3179 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,550 psi | 87% | 3205 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 54,940 psi | 86% | 3320 fps | 98.9% |
| ADI AR 2208 | <<locked>> | 96% | 56,217 psi | 88% | 3317 fps | 98.6% |
| ADI AR 2219 | <<locked>> | 82% | 56,072 psi | 88% | 3307 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 57,653 psi | 90% | 3333 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 88% | 54,331 psi | 85% | 3268 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 55,796 psi | 87% | 3402 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,679 psi | 86% | 3435 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,521 psi | 87% | 3337 fps | 99.5% |
| Alliant Reloder-10x | <<locked>> | 84% | 55,608 psi | 87% | 3248 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 56,362 psi | 88% | 3363 fps | 98.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,573 psi | 76% | 3278 fps | 97% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 56,695 psi | 89% | 3461 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,476 psi | 85% | 3163 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 55,027 psi | 86% | 3327 fps | 98.2% |
| Bofors RP3 | <<locked>> | 96% | 56,463 psi | 88% | 3360 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,217 psi | 88% | 3264 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 90% | 57,101 psi | 89% | 3363 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 86% | 55,216 psi | 87% | 3406 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 84% | 54,781 psi | 86% | 3284 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 56,173 psi | 88% | 3310 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 54,186 psi | 85% | 3304 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 90% | 55,492 psi | 87% | 3337 fps | 99.3% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,628 psi | 70% | 3146 fps | 97.6% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,679 psi | 86% | 3363 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,809 psi | 55% | 2067 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 57,029 psi | 89% | 3340 fps | 99.5% |
| IMR 3031 | <<locked>> | 90% | 54,839 psi | 86% | 3330 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,535 psi | 87% | 3297 fps | 98.7% |
| IMR 4198 | <<locked>> | 84% | 55,521 psi | 87% | 3209 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,253 psi | 74% | 3209 fps | 96.6% |
| IMR 4895 | <<locked>> | 92% | 54,172 psi | 85% | 3340 fps | 98.9% |
| IMR 8208 XBR | <<locked>> | 90% | 57,653 psi | 90% | 3333 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 84% | 54,389 psi | 85% | 3258 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 90% | 54,578 psi | 86% | 3301 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 54,940 psi | 86% | 3248 fps | 99% |
| Lovex S062 | <<locked>> | 94% | 55,230 psi | 87% | 3301 fps | 99.7% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,389 psi | 85% | 3274 fps | 96.6% |
| Norma 201 | <<locked>> | 92% | 57,188 psi | 90% | 3323 fps | 99.8% |
| Norma 202 | <<locked>> | 92% | 57,725 psi | 90% | 3333 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,506 psi | 87% | 3346 fps | 99.1% |
| Norma URPᴾ | <<locked>> | 100% | 49,298 psi | 77% | 3268 fps | 96.9% |
| Ramshot Big Game | <<locked>> | 94% | 56,362 psi | 88% | 3373 fps | 99.1% |
| Ramshot TAC | <<locked>> | 88% | 55,056 psi | 86% | 3281 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 88% | 54,259 psi | 85% | 3307 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,593 psi | 87% | 3274 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,027 psi | 55% | 2113 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 57,334 psi | 90% | 3320 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 54,766 psi | 86% | 3278 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 56,623 psi | 89% | 3435 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 56,652 psi | 89% | 3478 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,255 psi | 77% | 3291 fps | 96.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,125 psi | 79% | 3310 fps | 96% |
| Rottweil R 901 | <<locked>> | 88% | 54,752 psi | 86% | 3261 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 57,711 psi | 90% | 3320 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 98% | 56,043 psi | 88% | 3343 fps | 99.5% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,389 psi | 85% | 3274 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 90% | 54,578 psi | 86% | 3301 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 55,230 psi | 87% | 3301 fps | 99.7% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 57,435 psi | 90% | 3287 fps | 99.6% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 56,637 psi | 89% | 3317 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 54,331 psi | 85% | 3350 fps | 98.9% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 56,434 psi | 88% | 3274 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 56,811 psi | 89% | 3317 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 57,101 psi | 89% | 3343 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,608 psi | 87% | 3215 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,608 psi | 87% | 3205 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 55,608 psi | 87% | 3310 fps | 99.8% |
| Somchem S335 | <<locked>> | 90% | 54,911 psi | 86% | 3212 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 56,188 psi | 88% | 3310 fps | 99% |
| Somchem S355 | <<locked>> | 98% | 56,318 psi | 88% | 3337 fps | 99.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,787 psi | 69% | 3202 fps | 98.8% |
| Vihtavuori N130 | <<locked>> | 86% | 55,332 psi | 87% | 3186 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,579 psi | 87% | 3202 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 56,913 psi | 89% | 3291 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 54,650 psi | 86% | 3248 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 54,665 psi | 86% | 3264 fps | 99.8% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,764 psi | 81% | 3271 fps | 97.3% |
| Vihtavuori N530 | <<locked>> | 88% | 54,781 psi | 86% | 3278 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 94% | 56,782 psi | 89% | 3301 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,894 psi | 80% | 3271 fps | 96.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,069 psi | 83% | 3255 fps | 99.2% |
| Winchester 748 | <<locked>> | 88% | 54,259 psi | 85% | 3323 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 92% | 56,985 psi | 89% | 3356 fps | 99.5% |
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% | 43,540 psi | 68% | 3022 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,601 psi | 75% | 3133 fps | 99.8% |
| Accurate 2495 | <<locked>> | 80% | 36,114 psi | 57% | 2907 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 42,641 psi | 67% | 3068 fps | 99.1% |
| Accurate 4064 | <<locked>> | 80% | 34,113 psi | 53% | 2881 fps | 98.2% |
| Accurate 4350 | <<locked>> | 96% | 42,917 psi | 67% | 3140 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 51,692 psi | 81% | 3120 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,054 psi | 82% | 3146 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 40,030 psi | 63% | 3009 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 86% | 41,118 psi | 64% | 3015 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 52,489 psi | 82% | 3248 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,018 psi | 66% | 3035 fps | 97.7% |
| Alliant AR-Comp | <<locked>> | 80% | 41,365 psi | 65% | 3051 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,776 psi | 76% | 3268 fps | 98.5% |
| Alliant Power Pro 2000-MR | 63.8 gr | 86% | 44,527 psi | 70% | 3219 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 35,404 psi | 55% | 2910 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,936 psi | 77% | 3140 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 40,959 psi | 64% | 3051 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 96% | 42,931 psi | 67% | 3150 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 88% | 37,753 psi | 59% | 3048 fps | 95.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,024 psi | 80% | 3107 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 41,814 psi | 66% | 3064 fps | 95.1% |
| Bofors RP3 | <<locked>> | 82% | 34,940 psi | 55% | 2910 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,932 psi | 69% | 3035 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,466 psi | 63% | 3041 fps | 97.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,382 psi | 70% | 3192 fps | 96.4% |
| Hodgdon H322 | <<locked>> | 80% | 47,877 psi | 75% | 3166 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,921 psi | 77% | 3186 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 88% | 44,222 psi | 69% | 3107 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 40,335 psi | 63% | 3025 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 36,854 psi | 58% | 2959 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,289 psi | 57% | 2972 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,831 psi | 40% | 1854 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,740 psi | 61% | 2969 fps | 95.9% |
| IMR 3031 | <<locked>> | 80% | 39,305 psi | 62% | 3038 fps | 99.9% |
| IMR 4064 | <<locked>> | 84% | 40,611 psi | 64% | 2999 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 49,284 psi | 77% | 3107 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 44,135 psi | 69% | 3143 fps | 95.7% |
| IMR 4895 | <<locked>> | 82% | 39,233 psi | 61% | 3025 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 42,018 psi | 66% | 3035 fps | 97.7% |
| Lovex D073.5 | <<locked>> | 80% | 47,297 psi | 74% | 3133 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 80% | 38,638 psi | 61% | 2989 fps | 98.4% |
| Lovex S060 | <<locked>> | 80% | 40,567 psi | 64% | 2956 fps | 96% |
| Lovex S062 | <<locked>> | 80% | 35,476 psi | 56% | 2884 fps | 95.8% |
| Lovex S065 | <<locked>> | 96% | 48,051 psi | 75% | 3153 fps | 95% |
| Norma 201 | <<locked>> | 80% | 39,233 psi | 61% | 2966 fps | 97% |
| Norma 202 | <<locked>> | 80% | 39,320 psi | 62% | 2986 fps | 99% |
| Norma 203B | <<locked>> | 82% | 37,710 psi | 59% | 2972 fps | 95% |
| Norma URP | <<locked>> | 96% | 43,091 psi | 68% | 3136 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 84% | 39,900 psi | 63% | 3045 fps | 95.5% |
| Ramshot TAC | <<locked>> | 84% | 48,008 psi | 75% | 3146 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,220 psi | 65% | 3045 fps | 96.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,542 psi | 71% | 3084 fps | 97.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,933 psi | 41% | 1893 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,253 psi | 74% | 3143 fps | 99.5% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 51,126 psi | 80% | 3212 fps | 95% |
| ReloadSwiss RS 52 | 60.4 gr | 84% | 42,743 psi | 67% | 3163 fps | 95.9% |
| ReloadSwiss RS 60 | 59.9 gr | 82% | 32,866 psi | 52% | 2920 fps | 95.9% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 46,050 psi | 72% | 3225 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 46,963 psi | 74% | 3245 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 42,960 psi | 67% | 3035 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 80% | 37,304 psi | 58% | 2910 fps | 96.4% |
| Rottweil R 903 | <<locked>> | 86% | 37,521 psi | 59% | 2969 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 96% | 48,051 psi | 75% | 3153 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,638 psi | 61% | 2989 fps | 98.4% |
| Shooters World Precision | <<locked>> | 80% | 35,476 psi | 56% | 2884 fps | 95.8% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 49,951 psi | 78% | 3159 fps | 98.9% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 52,968 psi | 83% | 3255 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 38,841 psi | 61% | 3025 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 49,806 psi | 78% | 3166 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 46,035 psi | 72% | 3114 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,609 psi | 61% | 2969 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,785 psi | 64% | 2940 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,620 psi | 53% | 2776 fps | 98.6% |
| Somchem S321 | <<locked>> | 80% | 45,339 psi | 71% | 3120 fps | 98.6% |
| Somchem S335 | <<locked>> | 80% | 40,335 psi | 63% | 2940 fps | 99.6% |
| Somchem S341 | <<locked>> | 80% | 39,740 psi | 62% | 2986 fps | 95.6% |
| Somchem S355 | <<locked>> | 84% | 36,143 psi | 57% | 2920 fps | 95.1% |
| Somchem S365 | <<locked>> | 92% | 33,750 psi | 53% | 2943 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 46,180 psi | 72% | 3035 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,944 psi | 64% | 2946 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,289 psi | 57% | 2910 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 37,217 psi | 58% | 2910 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 82% | 32,271 psi | 51% | 2792 fps | 95.2% |
| Vihtavuori N160 | <<locked>> | 96% | 45,266 psi | 71% | 3143 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 42,032 psi | 66% | 3028 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 80% | 35,868 psi | 56% | 2887 fps | 98.2% |
| Vihtavuori N550 | <<locked>> | 96% | 44,599 psi | 70% | 3143 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 37,797 psi | 59% | 2933 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 41,205 psi | 65% | 3071 fps | 98.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,855 psi | 59% | 2969 fps | 95.8% |
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 91 powders for .300 WSM loaded with the .308 | 123gr | Sako Gamehead. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,478 fps; across all powders the maximum-charge window runs from 2,067 fps to 3,478 fps. Accurate 4350 gives the best case fill at 100 %, and 91 of the 91 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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, ReloadSwiss RS 52 rank at the top here: for .300 WSM with the .308 | 123gr | Sako Gamehead 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.