Load Specifications
Load data in caliber .300 WSM with .308 | 88gr | Inceptor SRR bullet and 68 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester 748, Hodgdon H322 and SNPE Vectan SP 3.
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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 84% | 56,260 psi | 88% | 3648 fps | 100% |
| Accurate 2015 | <<locked>> | 96% | 54,998 psi | 86% | 3704 fps | 100% |
| Accurate 2460 | <<locked>> | 92% | 54,070 psi | 85% | 3707 fps | 98.8% |
| Accurate 2495ᴾ | <<locked>> | 100% | 50,473 psi | 79% | 3671 fps | 99.9% |
| Accurate 2520 | <<locked>> | 96% | 55,230 psi | 87% | 3760 fps | 98.7% |
| Accurate 4064ᴾ | <<locked>> | 100% | 46,746 psi | 73% | 3619 fps | 98.3% |
| Accurate LT-30 | <<locked>> | 90% | 56,826 psi | 89% | 3671 fps | 99.8% |
| Accurate LT-32 | <<locked>> | 90% | 57,261 psi | 90% | 3688 fps | 98.9% |
| ADI APS 450 | <<locked>> | 82% | 57,696 psi | 90% | 2963 fps | 100% |
| ADI AR 2207 | <<locked>> | 88% | 57,188 psi | 90% | 3730 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 56,594 psi | 89% | 3802 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 98% | 57,711 psi | 90% | 3786 fps | 97.7% |
| Alliant AR-Comp | <<locked>> | 98% | 55,564 psi | 87% | 3802 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 54,679 psi | 86% | 3852 fps | 96.4% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 54,998 psi | 86% | 3773 fps | 96.5% |
| Alliant Reloder-10x | <<locked>> | 92% | 54,955 psi | 86% | 3743 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 86% | 55,056 psi | 86% | 3681 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 56,217 psi | 88% | 3642 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 96% | 56,826 psi | 89% | 3724 fps | 98% |
| Hodgdon BL-C2 | <<locked>> | 98% | 56,420 psi | 88% | 3806 fps | 98.1% |
| Hodgdon H322 | <<locked>> | 92% | 54,679 psi | 86% | 3766 fps | 99.6% |
| Hodgdon H335 | <<locked>> | 92% | 56,492 psi | 89% | 3783 fps | 99.3% |
| Hodgdon H4198 | <<locked>> | 86% | 55,419 psi | 87% | 3681 fps | 99.4% |
| Hodgdon H4895 | <<locked>> | 98% | 54,795 psi | 86% | 3770 fps | 96.4% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 53,505 psi | 84% | 3783 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,735 psi | 51% | 2382 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 57,101 psi | 89% | 3786 fps | 96.8% |
| IMR 3031ᴾ | <<locked>> | 100% | 56,449 psi | 88% | 3855 fps | 100% |
| IMR 4198 | <<locked>> | 92% | 55,738 psi | 87% | 3717 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 54,737 psi | 86% | 3638 fps | 100% |
| IMR 8208 XBR | <<locked>> | 98% | 57,711 psi | 90% | 3786 fps | 97.7% |
| Lovex D073.4 | <<locked>> | 86% | 54,056 psi | 85% | 3734 fps | 98.3% |
| Lovex D073.5 | <<locked>> | 92% | 54,215 psi | 85% | 3704 fps | 97.9% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 56,666 psi | 89% | 3796 fps | 98.9% |
| Lovex S053 | <<locked>> | 84% | 56,565 psi | 89% | 3619 fps | 100% |
| Lovex S060 | <<locked>> | 98% | 55,608 psi | 87% | 3688 fps | 95.9% |
| Lovex S062ᴾ | <<locked>> | 100% | 50,154 psi | 79% | 3645 fps | 96.3% |
| Norma 200 | <<locked>> | 88% | 54,810 psi | 86% | 3714 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 56,391 psi | 88% | 3760 fps | 97.5% |
| Norma 202ᴾ | <<locked>> | 100% | 56,869 psi | 89% | 3789 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 94% | 56,507 psi | 89% | 3720 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,561 psi | 51% | 2431 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 55,071 psi | 86% | 3671 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 54,085 psi | 85% | 3724 fps | 98.2% |
| Rottweil R 901 | <<locked>> | 98% | 56,724 psi | 89% | 3766 fps | 99.1% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 52,910 psi | 83% | 3681 fps | 96.8% |
| Shooters World AR Plus | <<locked>> | 86% | 54,056 psi | 85% | 3734 fps | 98.3% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 56,666 psi | 89% | 3796 fps | 98.9% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 50,154 psi | 79% | 3645 fps | 96.3% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 55,013 psi | 86% | 3681 fps | 96.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 56,536 psi | 89% | 3428 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 57,392 psi | 90% | 3802 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 56,014 psi | 88% | 3760 fps | 99.9% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 57,043 psi | 89% | 3783 fps | 96.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 55,869 psi | 88% | 3675 fps | 99.1% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 48,501 psi | 76% | 3530 fps | 99% |
| Somchem S321 | <<locked>> | 94% | 55,956 psi | 88% | 3766 fps | 97.7% |
| Somchem S335 | <<locked>> | 98% | 54,592 psi | 86% | 3665 fps | 99.5% |
| Somchem S341 | <<locked>> | 98% | 56,376 psi | 88% | 3740 fps | 96% |
| Vihtavuori N120 | <<locked>> | 88% | 57,145 psi | 90% | 3665 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 55,347 psi | 87% | 3671 fps | 100% |
| Vihtavuori N133 | <<locked>> | 98% | 55,230 psi | 87% | 3668 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 51,126 psi | 80% | 3681 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 53,925 psi | 85% | 3694 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 96% | 55,085 psi | 86% | 3724 fps | 97.2% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 52,359 psi | 82% | 3675 fps | 98.8% |
| Winchester 748 | <<locked>> | 98% | 57,363 psi | 90% | 3839 fps | 98.5% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 56,681 psi | 89% | 3789 fps | 96.9% |
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 1680 | <<locked>> | 80% | 48,950 psi | 77% | 3517 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 32,242 psi | 51% | 3182 fps | 96.3% |
| Accurate 2460 | <<locked>> | 84% | 40,538 psi | 64% | 3415 fps | 96% |
| Accurate 2495 | <<locked>> | 86% | 30,530 psi | 48% | 3182 fps | 96% |
| Accurate 2520 | <<locked>> | 88% | 41,147 psi | 64% | 3465 fps | 95.7% |
| Accurate 4064 | <<locked>> | 92% | 35,404 psi | 55% | 3340 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 41,437 psi | 65% | 3356 fps | 97.7% |
| Accurate LT-32 | <<locked>> | 80% | 41,771 psi | 65% | 3366 fps | 95.8% |
| ADI APS 450 | <<locked>> | 80% | 55,753 psi | 87% | 2927 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 44,106 psi | 69% | 3491 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 39,595 psi | 62% | 3438 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 92% | 47,500 psi | 74% | 3579 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 80% | 29,588 psi | 46% | 3196 fps | 97.9% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 50,981 psi | 80% | 3773 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 51,387 psi | 81% | 3701 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 37,173 psi | 58% | 3356 fps | 98.7% |
| Alliant Reloder-7 | <<locked>> | 80% | 45,382 psi | 71% | 3494 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 40,176 psi | 63% | 3317 fps | 97.8% |
| Hodgdon Benchmark | <<locked>> | 88% | 44,208 psi | 69% | 3461 fps | 95.2% |
| Hodgdon BL-C2 | <<locked>> | 92% | 45,382 psi | 71% | 3579 fps | 95.6% |
| Hodgdon H322 | 55.1 gr | 80% | 35,926 psi | 56% | 3337 fps | 95.7% |
| Hodgdon H335 | <<locked>> | 82% | 39,581 psi | 62% | 3422 fps | 95.9% |
| Hodgdon H4198 | <<locked>> | 80% | 45,687 psi | 72% | 3484 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 96% | 51,198 psi | 80% | 3698 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 49,734 psi | 78% | 3707 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,931 psi | 38% | 2139 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 49,864 psi | 78% | 3642 fps | 95.1% |
| IMR 3031 | <<locked>> | 84% | 32,430 psi | 51% | 3291 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 38,522 psi | 60% | 3360 fps | 99.5% |
| IMR 4227 | <<locked>> | 80% | 51,300 psi | 80% | 3576 fps | 100% |
| IMR 8208 XBR | <<locked>> | 92% | 47,500 psi | 74% | 3579 fps | 95.4% |
| Lovex D073.4 | <<locked>> | 80% | 43,236 psi | 68% | 3504 fps | 96% |
| Lovex D073.5 | <<locked>> | 86% | 43,569 psi | 68% | 3484 fps | 95.5% |
| Lovex D073.6 | <<locked>> | 90% | 39,334 psi | 62% | 3428 fps | 95% |
| Lovex S053 | <<locked>> | 80% | 50,096 psi | 79% | 3510 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 52,112 psi | 82% | 3619 fps | 95.1% |
| Lovex S062 | <<locked>> | 98% | 47,065 psi | 74% | 3579 fps | 95.5% |
| Norma 200 | <<locked>> | 80% | 42,018 psi | 66% | 3458 fps | 99.8% |
| Norma 201 | <<locked>> | 94% | 46,398 psi | 73% | 3556 fps | 95.2% |
| Norma 202 | <<locked>> | 88% | 37,927 psi | 59% | 3376 fps | 95.4% |
| Ramshot X-Terminator | <<locked>> | 92% | 52,924 psi | 83% | 3652 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,902 psi | 37% | 2188 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 51,721 psi | 81% | 3612 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 41,205 psi | 65% | 3442 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 86% | 38,972 psi | 61% | 3376 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 96% | 46,644 psi | 73% | 3547 fps | 95.2% |
| Shooters World AR Plus | <<locked>> | 80% | 43,236 psi | 68% | 3504 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 90% | 39,334 psi | 62% | 3428 fps | 95% |
| Shooters World Precision | <<locked>> | 98% | 47,065 psi | 74% | 3579 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 51,111 psi | 80% | 3606 fps | 95.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 45,571 psi | 71% | 3251 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 40,277 psi | 63% | 3435 fps | 96% |
| SNPE Vectan SP 3 | 52.2 gr | 80% | 37,768 psi | 59% | 3363 fps | 97.2% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 53,113 psi | 83% | 3704 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 37,826 psi | 59% | 3284 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 34,751 psi | 54% | 3209 fps | 95.5% |
| Somchem S321 | <<locked>> | 88% | 45,063 psi | 71% | 3543 fps | 95.2% |
| Somchem S335 | <<locked>> | 84% | 34,693 psi | 54% | 3212 fps | 95.2% |
| Somchem S341 | <<locked>> | 96% | 52,373 psi | 82% | 3665 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 44,193 psi | 69% | 3442 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 35,476 psi | 56% | 3241 fps | 98.2% |
| Vihtavuori N133 | <<locked>> | 80% | 30,864 psi | 48% | 3107 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 84% | 29,515 psi | 46% | 3150 fps | 95.3% |
| Vihtavuori N140 | <<locked>> | 88% | 35,969 psi | 56% | 3294 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 92% | 47,921 psi | 75% | 3583 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 90% | 37,231 psi | 58% | 3333 fps | 95% |
| Winchester 748 | 65 gr | 90% | 43,062 psi | 67% | 3540 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 96% | 48,849 psi | 77% | 3638 fps | 95.1% |
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 WSM loaded with the .308 | 88gr | Inceptor SRR. IMR 3031 delivers the highest muzzle velocity at 3,855 fps; across all powders the maximum-charge window runs from 2,382 fps to 3,855 fps. Accurate 2495 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 (440 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 88.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, ADI AR 2208 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. Winchester 748, Hodgdon H322, SNPE Vectan SP 3 rank at the top here: for .300 WSM with the .308 | 88gr | Inceptor SRR they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2200, ADI AR 2208, Alliant Power Pro 2000-MR 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.