Load Specifications
Load data in caliber .300 WSM with .308 | 115gr | Sierra VarmintKing bullet and 88 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 52 and Hodgdon LEVERevolution.
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>> | 90% | 57,203 psi | 90% | 3353 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 57,116 psi | 90% | 3458 fps | 98% |
| Accurate 2460 | <<locked>> | 86% | 56,086 psi | 88% | 3376 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 57,696 psi | 90% | 3438 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 55,999 psi | 88% | 3422 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 54,694 psi | 86% | 3399 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 56,797 psi | 89% | 3304 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 57,203 psi | 90% | 3330 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 56,579 psi | 89% | 3442 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 98% | 57,363 psi | 90% | 3428 fps | 98.3% |
| ADI AR 2219 | <<locked>> | 82% | 53,998 psi | 85% | 3373 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 55,521 psi | 87% | 3389 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 90% | 55,390 psi | 87% | 3389 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 56,956 psi | 89% | 3520 fps | 99.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 56,376 psi | 88% | 3553 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 56,710 psi | 89% | 3451 fps | 99.3% |
| Alliant Reloder-10x | <<locked>> | 86% | 56,768 psi | 89% | 3369 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 54,302 psi | 85% | 3419 fps | 98% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 54,288 psi | 85% | 3510 fps | 99% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 56,173 psi | 88% | 3281 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 56,637 psi | 89% | 3448 fps | 97.9% |
| Bofors RP3 | <<locked>> | 98% | 57,595 psi | 90% | 3471 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 88% | 54,331 psi | 85% | 3327 fps | 99.5% |
| Hodgdon BL-C2 | <<locked>> | 90% | 54,882 psi | 86% | 3422 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 88% | 56,536 psi | 89% | 3527 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 88% | 55,259 psi | 87% | 3392 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 57,290 psi | 90% | 3425 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 55,361 psi | 87% | 3412 fps | 97% |
| Hodgdon H4198 | <<locked>> | 82% | 54,940 psi | 86% | 3301 fps | 100% |
| Hodgdon H4895 | <<locked>> | 92% | 57,058 psi | 89% | 3455 fps | 99.2% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,728 psi | 67% | 3186 fps | 96.4% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 55,985 psi | 88% | 3481 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,374 psi | 54% | 2133 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 57,116 psi | 90% | 3435 fps | 99.1% |
| IMR 3031 | <<locked>> | 94% | 54,288 psi | 85% | 3425 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 55,912 psi | 88% | 3396 fps | 98.3% |
| IMR 4198 | <<locked>> | 86% | 56,927 psi | 89% | 3333 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 55,637 psi | 87% | 3458 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 90% | 55,521 psi | 87% | 3389 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 86% | 55,956 psi | 88% | 3379 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 92% | 55,738 psi | 87% | 3419 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 56,521 psi | 89% | 3366 fps | 98.7% |
| Lovex S062 | <<locked>> | 96% | 56,289 psi | 88% | 3409 fps | 99.5% |
| Norma 200 | <<locked>> | 82% | 56,811 psi | 89% | 3340 fps | 100% |
| Norma 201 | <<locked>> | 92% | 54,998 psi | 86% | 3379 fps | 99.3% |
| Norma 202 | <<locked>> | 92% | 55,521 psi | 87% | 3396 fps | 100% |
| Norma 203B | <<locked>> | 96% | 56,927 psi | 89% | 3465 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 94% | 53,998 psi | 85% | 3425 fps | 98.3% |
| Ramshot TAC | <<locked>> | 90% | 56,579 psi | 89% | 3396 fps | 96.5% |
| Ramshot Wild Boar | <<locked>> | 90% | 55,724 psi | 87% | 3422 fps | 98.6% |
| Ramshot X-Terminator | <<locked>> | 88% | 57,217 psi | 90% | 3392 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,737 psi | 54% | 2182 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 55,259 psi | 87% | 3383 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 54,056 psi | 85% | 3488 fps | 97.9% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 54,041 psi | 85% | 3524 fps | 100% |
| Rottweil R 901 | <<locked>> | 90% | 55,999 psi | 88% | 3379 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 55,477 psi | 87% | 3376 fps | 99.4% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 57,116 psi | 90% | 3455 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 92% | 55,738 psi | 87% | 3419 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 56,289 psi | 88% | 3409 fps | 99.5% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 55,332 psi | 87% | 3343 fps | 99.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 56,492 psi | 89% | 3031 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 54,563 psi | 86% | 3379 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 55,564 psi | 87% | 3461 fps | 98.6% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 54,230 psi | 85% | 3340 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 54,418 psi | 85% | 3363 fps | 96.6% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 55,027 psi | 86% | 3402 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 57,087 psi | 89% | 3333 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 56,927 psi | 89% | 3320 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 57,188 psi | 90% | 3432 fps | 99.7% |
| Somchem S335 | <<locked>> | 92% | 56,101 psi | 88% | 3323 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 54,085 psi | 85% | 3363 fps | 98.3% |
| Somchem S355ᴾ | <<locked>> | 100% | 57,508 psi | 90% | 3451 fps | 99.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,800 psi | 66% | 3238 fps | 97.7% |
| Unknown powderᴾ | <<locked>> | 100% | 51,590 psi | 81% | 3389 fps | 95.9% |
| Vihtavuori N120 | <<locked>> | 84% | 57,609 psi | 90% | 3261 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 55,506 psi | 87% | 3291 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 56,159 psi | 88% | 3314 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 54,520 psi | 85% | 3356 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 55,216 psi | 87% | 3356 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 48,660 psi | 76% | 3258 fps | 98.9% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,098 psi | 82% | 3356 fps | 96.7% |
| Vihtavuori N530 | <<locked>> | 88% | 55,492 psi | 87% | 3406 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 94% | 55,187 psi | 86% | 3386 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,373 psi | 82% | 3409 fps | 96.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 50,981 psi | 80% | 3297 fps | 98.5% |
| Winchester 748 | <<locked>> | 88% | 56,449 psi | 88% | 3458 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 86% | 56,898 psi | 89% | 3445 fps | 99.2% |
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% | 41,713 psi | 65% | 3081 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 53,461 psi | 84% | 3392 fps | 97.4% |
| Accurate 2460 | <<locked>> | 80% | 45,513 psi | 71% | 3182 fps | 99.4% |
| Accurate 2495 | <<locked>> | 80% | 38,450 psi | 60% | 3077 fps | 99.8% |
| Accurate 2520 | <<locked>> | 80% | 39,320 psi | 62% | 3091 fps | 98% |
| Accurate 4064 | <<locked>> | 80% | 32,372 psi | 51% | 2917 fps | 97% |
| Accurate LT-30 | <<locked>> | 80% | 50,227 psi | 79% | 3189 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,531 psi | 79% | 3212 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 82% | 40,901 psi | 64% | 3117 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 90% | 44,802 psi | 70% | 3182 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 80% | 50,488 psi | 79% | 3310 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,321 psi | 63% | 3081 fps | 96.6% |
| Alliant AR-Comp | <<locked>> | 80% | 39,276 psi | 62% | 3104 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 46,615 psi | 73% | 3314 fps | 97.5% |
| Alliant Power Pro 2000-MR | 65.8 gr | 88% | 45,716 psi | 72% | 3330 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 38,725 psi | 61% | 3081 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,253 psi | 74% | 3209 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 44,527 psi | 70% | 3219 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 92% | 41,249 psi | 65% | 3222 fps | 95.8% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,371 psi | 77% | 3169 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 45,963 psi | 72% | 3241 fps | 95.5% |
| Bofors RP3 | <<locked>> | 86% | 38,232 psi | 60% | 3081 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,482 psi | 67% | 3091 fps | 97.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,696 psi | 61% | 3087 fps | 96.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,409 psi | 66% | 3235 fps | 95% |
| Hodgdon H322 | <<locked>> | 80% | 42,670 psi | 67% | 3156 fps | 99.6% |
| Hodgdon H335 | <<locked>> | 80% | 49,980 psi | 78% | 3301 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 92% | 48,501 psi | 76% | 3284 fps | 95.4% |
| Hodgdon H4198 | <<locked>> | 80% | 51,735 psi | 81% | 3245 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 38,624 psi | 61% | 3071 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 40,016 psi | 63% | 3120 fps | 95.4% |
| Hodgdon LEVERevolution | 60.1 gr | 82% | 37,101 psi | 58% | 3077 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,498 psi | 40% | 1909 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 39,146 psi | 61% | 3064 fps | 95.3% |
| IMR 3031 | <<locked>> | 80% | 34,287 psi | 54% | 3005 fps | 98.8% |
| IMR 4064 | <<locked>> | 90% | 43,526 psi | 68% | 3150 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 47,558 psi | 75% | 3176 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 40,016 psi | 63% | 3130 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 80% | 40,321 psi | 63% | 3081 fps | 96.6% |
| Lovex D073.5 | <<locked>> | 80% | 45,382 psi | 71% | 3182 fps | 98.6% |
| Lovex D073.6 | <<locked>> | 80% | 36,738 psi | 58% | 3028 fps | 97.3% |
| Lovex S060 | <<locked>> | 82% | 41,611 psi | 65% | 3064 fps | 95.6% |
| Lovex S062 | <<locked>> | 82% | 36,245 psi | 57% | 2986 fps | 95.3% |
| Norma 200 | <<locked>> | 80% | 53,258 psi | 83% | 3284 fps | 100% |
| Norma 201 | <<locked>> | 80% | 37,637 psi | 59% | 3009 fps | 95.8% |
| Norma 202 | <<locked>> | 80% | 37,623 psi | 59% | 3031 fps | 98.2% |
| Norma 203B | <<locked>> | 86% | 41,002 psi | 64% | 3140 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 86% | 40,930 psi | 64% | 3153 fps | 95% |
| Ramshot TAC | <<locked>> | 88% | 53,011 psi | 83% | 3330 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 42,409 psi | 66% | 3156 fps | 95.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 43,888 psi | 69% | 3133 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,744 psi | 40% | 1955 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,353 psi | 71% | 3196 fps | 98.9% |
| ReloadSwiss RS 52 | 62.3 gr | 86% | 43,584 psi | 68% | 3274 fps | 95.4% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 33,591 psi | 53% | 3018 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 41,263 psi | 65% | 3087 fps | 98.7% |
| Rottweil R 902 | <<locked>> | 80% | 35,737 psi | 56% | 2953 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 88% | 38,276 psi | 60% | 3071 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,738 psi | 58% | 3028 fps | 97.3% |
| Shooters World Precision | <<locked>> | 82% | 36,245 psi | 57% | 2986 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,138 psi | 75% | 3212 fps | 98.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 53,737 psi | 84% | 2992 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 50,966 psi | 80% | 3317 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 42,482 psi | 67% | 3199 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 47,892 psi | 75% | 3228 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 50,763 psi | 80% | 3294 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 42,351 psi | 66% | 3146 fps | 95.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,276 psi | 62% | 2992 fps | 98.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,213 psi | 50% | 2822 fps | 97.7% |
| Somchem S321 | <<locked>> | 80% | 43,511 psi | 68% | 3169 fps | 97.7% |
| Somchem S335 | <<locked>> | 80% | 38,754 psi | 61% | 2992 fps | 99% |
| Somchem S341 | <<locked>> | 82% | 40,828 psi | 64% | 3094 fps | 95.2% |
| Somchem S355 | <<locked>> | 88% | 39,262 psi | 62% | 3084 fps | 95.4% |
| Somchem S365 | <<locked>> | 96% | 36,651 psi | 57% | 3104 fps | 95.9% |
| Unknown powder | <<locked>> | 98% | 48,312 psi | 76% | 3323 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 51,256 psi | 80% | 3163 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 43,613 psi | 68% | 3084 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,767 psi | 58% | 2946 fps | 99.6% |
| Vihtavuori N135 | <<locked>> | 80% | 34,606 psi | 54% | 2959 fps | 99.4% |
| Vihtavuori N140 | <<locked>> | 80% | 35,056 psi | 55% | 2943 fps | 97.9% |
| Vihtavuori N150 | <<locked>> | 90% | 35,476 psi | 56% | 2963 fps | 95.7% |
| Vihtavuori N160 | <<locked>> | 96% | 45,643 psi | 72% | 3228 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 42,351 psi | 66% | 3143 fps | 97.3% |
| Vihtavuori N540 | <<locked>> | 80% | 34,780 psi | 55% | 2956 fps | 97.3% |
| Vihtavuori N550 | <<locked>> | 96% | 45,716 psi | 72% | 3278 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 38,899 psi | 61% | 3035 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 42,583 psi | 67% | 3189 fps | 98.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,571 psi | 71% | 3235 fps | 97.3% |
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 112 powders for .300 WSM loaded with the .308 | 115gr | Sierra VarmintKing. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,553 fps; across all powders the maximum-charge window runs from 2,133 fps to 3,553 fps. Accurate 4350 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 (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 115.0 gr projectile in 0.308" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. 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 52, Hodgdon LEVERevolution rank at the top here: for .300 WSM with the .308 | 115gr | Sierra VarmintKing they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Bofors RP7, Hodgdon H414 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.