Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 115gr | Sierra VarmintKing bullet and 81 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and Alliant Reloder-16.
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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 53,243 psi | 87% | 3432 fps | 100% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,559 psi | 80% | 3419 fps | 97.1% |
| Accurate 4064 | <<locked>> | 86% | 53,461 psi | 88% | 3488 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,201 psi | 89% | 3576 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 82% | 52,866 psi | 87% | 3514 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 88% | 54,215 psi | 89% | 3520 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,056 psi | 90% | 3520 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 53,185 psi | 87% | 3645 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,650 psi | 90% | 3543 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,998 psi | 90% | 3566 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,071 psi | 90% | 3648 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 90% | 52,736 psi | 87% | 3615 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,513 psi | 75% | 3448 fps | 99.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,460 psi | 86% | 3665 fps | 99.2% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 52,895 psi | 87% | 3520 fps | 99.2% |
| Bofors RP3 | <<locked>> | 86% | 52,025 psi | 85% | 3497 fps | 99.9% |
| Bofors RP7 | <<locked>> | 90% | 51,837 psi | 85% | 3455 fps | 96.1% |
| Hodgdon H380 | <<locked>> | 86% | 52,591 psi | 86% | 3507 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 92% | 53,127 psi | 87% | 3563 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 82% | 53,476 psi | 88% | 3530 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 51,663 psi | 85% | 3497 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 53,577 psi | 88% | 3560 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,592 psi | 88% | 3596 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,824 psi | 59% | 2303 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,737 psi | 90% | 3533 fps | 99.9% |
| IMR 3031 | <<locked>> | 82% | 53,824 psi | 88% | 3520 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 53,708 psi | 88% | 3501 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,200 psi | 87% | 3465 fps | 97% |
| IMR 4350 | <<locked>> | 94% | 52,765 psi | 87% | 3488 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,693 psi | 88% | 3497 fps | 97% |
| IMR 4831 | <<locked>> | 96% | 54,679 psi | 90% | 3566 fps | 99.4% |
| IMR 4895 | <<locked>> | 84% | 52,837 psi | 87% | 3540 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 82% | 55,056 psi | 90% | 3520 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 53,127 psi | 87% | 3488 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 52,054 psi | 85% | 3432 fps | 99.6% |
| Lovex S062 | <<locked>> | 86% | 53,635 psi | 88% | 3497 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 53,432 psi | 88% | 3491 fps | 98.3% |
| Lovex S070 | <<locked>> | 94% | 54,679 psi | 90% | 3533 fps | 97.6% |
| Norma 201 | <<locked>> | 82% | 51,677 psi | 85% | 3451 fps | 100% |
| Norma 202 | <<locked>> | 82% | 52,272 psi | 86% | 3458 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,259 psi | 89% | 3553 fps | 99.8% |
| Norma MRPᴾ | <<locked>> | 100% | 51,517 psi | 85% | 3606 fps | 96.8% |
| Norma URP | <<locked>> | 94% | 53,098 psi | 87% | 3560 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 84% | 51,605 psi | 85% | 3510 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 94% | 52,098 psi | 86% | 3547 fps | 97.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,216 psi | 59% | 2352 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 52,692 psi | 87% | 3481 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 51,924 psi | 85% | 3576 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 52,199 psi | 86% | 3619 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,099 psi | 89% | 3593 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 53,127 psi | 87% | 3622 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 84% | 52,315 psi | 86% | 3455 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 52,069 psi | 85% | 3491 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 90% | 51,837 psi | 85% | 3455 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 53,432 psi | 88% | 3491 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 82% | 53,127 psi | 87% | 3488 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 53,635 psi | 88% | 3497 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,679 psi | 90% | 3533 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,708 psi | 88% | 3556 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,244 psi | 89% | 3507 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,071 psi | 90% | 3540 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 52,649 psi | 86% | 3392 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,519 psi | 88% | 3386 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 53,432 psi | 88% | 3428 fps | 97.1% |
| Somchem S335 | <<locked>> | 82% | 52,373 psi | 86% | 3386 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 53,824 psi | 88% | 3494 fps | 99.7% |
| Somchem S355 | <<locked>> | 88% | 52,156 psi | 86% | 3488 fps | 99.8% |
| Somchem S365 | <<locked>> | 96% | 51,692 psi | 85% | 3563 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,824 psi | 90% | 3547 fps | 96.9% |
| Vihtavuori N133 | <<locked>> | 82% | 53,026 psi | 87% | 3376 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 52,243 psi | 86% | 3422 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 52,953 psi | 87% | 3435 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 53,505 psi | 88% | 3461 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 51,764 psi | 85% | 3491 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 86% | 54,853 psi | 90% | 3481 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,534 psi | 90% | 3556 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,821 psi | 83% | 3547 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 51,895 psi | 85% | 3458 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 53,301 psi | 88% | 3570 fps | 97.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,205 psi | 68% | 3471 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 82% | 51,445 psi | 84% | 3478 fps | 99.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 46,615 psi | 77% | 3317 fps | 100% |
| Accurate 3100 | <<locked>> | 96% | 42,163 psi | 69% | 3278 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 44,048 psi | 72% | 3307 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 37,927 psi | 62% | 3219 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 49,545 psi | 81% | 3448 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 80% | 42,032 psi | 69% | 3258 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,619 psi | 85% | 3458 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,890 psi | 75% | 3488 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,264 psi | 69% | 3291 fps | 98.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,150 psi | 74% | 3366 fps | 98.3% |
| Alliant Reloder-16 | 73.5 gr | 84% | 37,275 psi | 61% | 3232 fps | 95.6% |
| Alliant Reloder-17 | 75.4 gr | 80% | 36,956 psi | 61% | 3245 fps | 97.3% |
| Alliant Reloder-23 | <<locked>> | 90% | 32,880 psi | 54% | 3107 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 92% | 38,841 psi | 64% | 3337 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,400 psi | 81% | 3448 fps | 98.7% |
| Bofors RP3 | <<locked>> | 80% | 42,293 psi | 69% | 3294 fps | 98.9% |
| Bofors RP7 | <<locked>> | 88% | 48,733 psi | 80% | 3389 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 42,931 psi | 70% | 3297 fps | 96.7% |
| Hodgdon H414 | <<locked>> | 88% | 46,296 psi | 76% | 3419 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 50,096 psi | 82% | 3461 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 32,184 psi | 53% | 3035 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,572 psi | 76% | 3425 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 90% | 49,734 psi | 82% | 3517 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,600 psi | 44% | 2067 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,964 psi | 79% | 3402 fps | 99.4% |
| IMR 3031 | <<locked>> | 80% | 50,183 psi | 82% | 3458 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,164 psi | 73% | 3304 fps | 98.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,630 psi | 77% | 3327 fps | 95.4% |
| IMR 4350 | <<locked>> | 92% | 49,472 psi | 81% | 3422 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 47,253 psi | 78% | 3363 fps | 95.4% |
| IMR 4831 | <<locked>> | 84% | 36,492 psi | 60% | 3156 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 46,311 psi | 76% | 3406 fps | 99% |
| IMR 8208 XBR | <<locked>> | 80% | 51,619 psi | 85% | 3458 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 49,516 psi | 81% | 3422 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,979 psi | 80% | 3369 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 44,338 psi | 73% | 3307 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 41,524 psi | 68% | 3232 fps | 95.4% |
| Lovex S070 | <<locked>> | 88% | 45,136 psi | 74% | 3333 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 48,573 psi | 80% | 3392 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 49,081 psi | 81% | 3399 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,541 psi | 73% | 3353 fps | 98.6% |
| Norma MRP | <<locked>> | 98% | 47,964 psi | 79% | 3527 fps | 95.8% |
| Norma URP | <<locked>> | 84% | 37,855 psi | 62% | 3215 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 44,686 psi | 73% | 3366 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 88% | 42,351 psi | 70% | 3330 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,021 psi | 44% | 2116 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,105 psi | 71% | 3271 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,443 psi | 80% | 3501 fps | 98.8% |
| ReloadSwiss RS 60 | 75.4 gr | 80% | 39,305 psi | 65% | 3333 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 37,768 psi | 62% | 3232 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 40,089 psi | 66% | 3314 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 46,195 psi | 76% | 3333 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 39,798 psi | 65% | 3225 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 88% | 48,733 psi | 80% | 3389 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 84% | 41,524 psi | 68% | 3232 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,516 psi | 81% | 3422 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,338 psi | 73% | 3307 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 88% | 45,136 psi | 74% | 3333 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,872 psi | 67% | 3281 fps | 97.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,633 psi | 83% | 3435 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,225 psi | 79% | 3406 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,400 psi | 81% | 3333 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,481 psi | 68% | 3159 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 46,833 psi | 77% | 3297 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 49,298 psi | 81% | 3330 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,285 psi | 83% | 3428 fps | 99.4% |
| Somchem S355 | <<locked>> | 80% | 40,321 psi | 66% | 3228 fps | 98.1% |
| Somchem S365 | <<locked>> | 80% | 29,602 psi | 49% | 3009 fps | 95.7% |
| Somchem S385 | <<locked>> | 96% | 47,747 psi | 78% | 3406 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 49,850 psi | 82% | 3320 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,861 psi | 75% | 3307 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,557 psi | 76% | 3317 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,479 psi | 63% | 3150 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 82% | 36,796 psi | 60% | 3150 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 45,034 psi | 74% | 3301 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 39,059 psi | 64% | 3219 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 90% | 36,042 psi | 59% | 3202 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,142 psi | 56% | 3048 fps | 96.7% |
| Winchester 760 | <<locked>> | 88% | 46,456 psi | 76% | 3425 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 92% | 31,314 psi | 51% | 3133 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,008 psi | 79% | 3412 fps | 99.5% |
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 106 powders for .300 Lapua Mag. loaded with the .308 | 115gr | Sierra VarmintKing. Alliant Reloder-26 delivers the highest muzzle velocity at 3,665 fps; across all powders the maximum-charge window runs from 2,303 fps to 3,665 fps. Accurate 3100 gives the best case fill at 100 %, and 106 of the 106 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 59–90 %, 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 3100, Accurate MAGPRO, ADI AR 2213 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 60, Alliant Reloder-17, Alliant Reloder-16 rank at the top here: for .300 Lapua Mag. 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 MAGPRO, ADI AR 2209, ADI AR 2213 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.