Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 130gr | Sax MJG-SX 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 ReloadSwiss RS 70.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 54,679 psi | 90% | 3386 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 53,621 psi | 88% | 3396 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 51,721 psi | 85% | 3399 fps | 100% |
| Accurate 4064 | <<locked>> | 90% | 53,809 psi | 88% | 3442 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 54,114 psi | 89% | 3504 fps | 98.1% |
| ADI AR 2206H | <<locked>> | 86% | 53,954 psi | 89% | 3468 fps | 99% |
| ADI AR 2208 | <<locked>> | 90% | 51,880 psi | 85% | 3402 fps | 98.2% |
| ADI Benchmark 8208 | <<locked>> | 84% | 52,982 psi | 87% | 3422 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 84% | 53,505 psi | 88% | 3415 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 54,012 psi | 89% | 3586 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 51,764 psi | 85% | 3428 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 88% | 52,272 psi | 86% | 3448 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 98% | 51,735 psi | 85% | 3504 fps | 98.1% |
| Alliant Reloder-17 | <<locked>> | 94% | 52,997 psi | 87% | 3550 fps | 99.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,537 psi | 65% | 3225 fps | 96.4% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 54,099 psi | 89% | 3471 fps | 98.3% |
| Bofors RP3 | <<locked>> | 90% | 52,533 psi | 86% | 3445 fps | 99.4% |
| Hodgdon Benchmark | <<locked>> | 84% | 54,607 psi | 90% | 3412 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 84% | 52,562 psi | 86% | 3442 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 82% | 54,273 psi | 89% | 3550 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 90% | 53,388 psi | 88% | 3448 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 86% | 54,491 psi | 89% | 3484 fps | 99.4% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 51,285 psi | 84% | 3425 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 54,288 psi | 89% | 3510 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,157 psi | 58% | 2260 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 52,460 psi | 86% | 3428 fps | 99.1% |
| IMR 3031 | <<locked>> | 86% | 54,317 psi | 89% | 3484 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 54,621 psi | 90% | 3451 fps | 98.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 54,650 psi | 90% | 3494 fps | 98.4% |
| IMR 4895 | <<locked>> | 88% | 53,621 psi | 88% | 3488 fps | 99% |
| IMR 8208 XBR | <<locked>> | 84% | 52,982 psi | 87% | 3422 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 86% | 53,824 psi | 88% | 3445 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 53,476 psi | 88% | 3392 fps | 99% |
| Lovex S062 | <<locked>> | 90% | 54,491 psi | 89% | 3448 fps | 99.7% |
| Lovex S065 | <<locked>> | 96% | 54,143 psi | 89% | 3428 fps | 96.9% |
| Lovex S070 | <<locked>> | 98% | 55,056 psi | 90% | 3458 fps | 95.9% |
| Norma 201 | <<locked>> | 86% | 52,765 psi | 87% | 3412 fps | 99.6% |
| Norma 202 | <<locked>> | 86% | 53,316 psi | 88% | 3425 fps | 100% |
| Norma 203B | <<locked>> | 90% | 55,042 psi | 90% | 3501 fps | 99.2% |
| Norma URP | <<locked>> | 98% | 52,997 psi | 87% | 3488 fps | 97.9% |
| Ramshot Big Game | <<locked>> | 88% | 52,199 psi | 86% | 3455 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 98% | 52,083 psi | 86% | 3468 fps | 96.1% |
| Ramshot TAC | <<locked>> | 84% | 53,577 psi | 88% | 3419 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 84% | 52,982 psi | 87% | 3445 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 82% | 53,867 psi | 88% | 3412 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,491 psi | 58% | 2310 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 53,867 psi | 88% | 3425 fps | 96.1% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 52,417 psi | 86% | 3520 fps | 98.3% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 52,547 psi | 86% | 3560 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 53,940 psi | 89% | 3520 fps | 97.9% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 53,766 psi | 88% | 3547 fps | 97.6% |
| Rottweil R 901 | <<locked>> | 84% | 53,490 psi | 88% | 3412 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 53,301 psi | 88% | 3412 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 92% | 52,344 psi | 86% | 3432 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 96% | 54,143 psi | 89% | 3428 fps | 96.9% |
| Shooters World Match Rifle | <<locked>> | 86% | 53,824 psi | 88% | 3445 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 54,491 psi | 89% | 3448 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 98% | 55,056 psi | 90% | 3458 fps | 95.9% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 54,157 psi | 89% | 3497 fps | 99% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 51,866 psi | 85% | 3389 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 52,591 psi | 86% | 3428 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 54,099 psi | 89% | 3363 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 54,563 psi | 90% | 3353 fps | 100% |
| Somchem S321 | <<locked>> | 82% | 54,230 psi | 89% | 3451 fps | 99.8% |
| Somchem S335 | <<locked>> | 86% | 53,664 psi | 88% | 3353 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 51,503 psi | 85% | 3383 fps | 98.6% |
| Somchem S355 | <<locked>> | 92% | 52,692 psi | 87% | 3435 fps | 99.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 51,068 psi | 84% | 3491 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 82% | 53,679 psi | 88% | 3333 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 54,288 psi | 89% | 3353 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 52,837 psi | 87% | 3389 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 53,969 psi | 89% | 3399 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 54,201 psi | 89% | 3412 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 96% | 51,924 psi | 85% | 3422 fps | 97.6% |
| Vihtavuori N530 | <<locked>> | 84% | 53,461 psi | 88% | 3422 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 88% | 52,359 psi | 86% | 3383 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 54,853 psi | 90% | 3491 fps | 98% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,250 psi | 71% | 3320 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 52,692 psi | 87% | 3399 fps | 99.5% |
| Winchester 748 | <<locked>> | 84% | 53,345 psi | 88% | 3468 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 86% | 52,591 psi | 86% | 3435 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% | 48,080 psi | 79% | 3271 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,901 psi | 67% | 3159 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 48,138 psi | 79% | 3333 fps | 99.8% |
| Accurate 4064 | <<locked>> | 80% | 38,638 psi | 63% | 3136 fps | 99.2% |
| Accurate 4350 | <<locked>> | 92% | 43,569 psi | 72% | 3291 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 44,411 psi | 73% | 3274 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 82% | 40,205 psi | 66% | 3146 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,456 psi | 76% | 3294 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 80% | 46,528 psi | 76% | 3301 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 43,584 psi | 72% | 3353 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,289 psi | 61% | 3104 fps | 96% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,118 psi | 66% | 3182 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 92% | 42,627 psi | 70% | 3297 fps | 95.5% |
| Alliant Reloder-17 | 87 gr | 84% | 37,217 psi | 61% | 3179 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 98% | 37,086 psi | 61% | 3156 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,888 psi | 72% | 3261 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 37,086 psi | 61% | 3104 fps | 96.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,153 psi | 79% | 3287 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,687 psi | 75% | 3307 fps | 99% |
| Hodgdon CFE223 | <<locked>> | 80% | 50,343 psi | 83% | 3471 fps | 98% |
| Hodgdon H380 | <<locked>> | 84% | 43,598 psi | 72% | 3245 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 44,788 psi | 74% | 3287 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 36,796 psi | 60% | 3100 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,915 psi | 67% | 3235 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,049 psi | 43% | 2031 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,076 psi | 71% | 3228 fps | 97.3% |
| IMR 3031 | <<locked>> | 80% | 44,208 psi | 73% | 3297 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,523 psi | 65% | 3130 fps | 95.2% |
| IMR 4831 | <<locked>> | 92% | 41,713 psi | 68% | 3228 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 41,089 psi | 67% | 3219 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 80% | 46,456 psi | 76% | 3294 fps | 98.7% |
| Lovex D073.6 | <<locked>> | 80% | 43,656 psi | 72% | 3248 fps | 99.3% |
| Lovex S060 | <<locked>> | 80% | 44,425 psi | 73% | 3209 fps | 97.3% |
| Lovex S062 | <<locked>> | 80% | 39,523 psi | 65% | 3136 fps | 97.2% |
| Lovex S065 | <<locked>> | 92% | 47,659 psi | 78% | 3301 fps | 95.3% |
| Lovex S070 | <<locked>> | 96% | 51,706 psi | 85% | 3396 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 43,468 psi | 71% | 3225 fps | 98.2% |
| Norma 202 | <<locked>> | 80% | 43,729 psi | 72% | 3238 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 39,479 psi | 65% | 3166 fps | 95.7% |
| Norma URP | <<locked>> | 92% | 43,337 psi | 71% | 3284 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 39,320 psi | 65% | 3176 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 96% | 48,704 psi | 80% | 3399 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 46,731 psi | 77% | 3281 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,180 psi | 76% | 3307 fps | 97.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,372 psi | 83% | 3346 fps | 98.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,295 psi | 43% | 2077 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 50,343 psi | 83% | 3356 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,235 psi | 69% | 3301 fps | 95.8% |
| ReloadSwiss RS 60 | 82.9 gr | 80% | 34,519 psi | 57% | 3117 fps | 96.9% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 43,439 psi | 71% | 3304 fps | 95.3% |
| ReloadSwiss RS 70 | 98.9 gr | 94% | 46,644 psi | 77% | 3389 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 47,355 psi | 78% | 3294 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 80% | 41,365 psi | 68% | 3166 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 37,217 psi | 61% | 3100 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 92% | 47,659 psi | 78% | 3301 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,656 psi | 72% | 3248 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 39,523 psi | 65% | 3136 fps | 97.2% |
| Shooters World SW4350 | <<locked>> | 96% | 51,706 psi | 85% | 3396 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 38,392 psi | 63% | 3156 fps | 95.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,049 psi | 74% | 3248 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,033 psi | 71% | 3228 fps | 96.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,657 psi | 73% | 3189 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,159 psi | 61% | 3012 fps | 99.3% |
| Somchem S321 | <<locked>> | 80% | 50,618 psi | 83% | 3383 fps | 99.5% |
| Somchem S335 | <<locked>> | 80% | 44,469 psi | 73% | 3186 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 44,657 psi | 73% | 3245 fps | 97.2% |
| Somchem S355 | <<locked>> | 82% | 38,014 psi | 62% | 3110 fps | 95.8% |
| Somchem S365 | <<locked>> | 88% | 33,765 psi | 55% | 3077 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 50,430 psi | 83% | 3278 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,918 psi | 74% | 3189 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,611 psi | 67% | 3159 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,510 psi | 68% | 3159 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 33,939 psi | 56% | 2976 fps | 96% |
| Vihtavuori N160 | <<locked>> | 90% | 42,380 psi | 70% | 3222 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 46,659 psi | 77% | 3287 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 80% | 40,059 psi | 66% | 3133 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 92% | 44,730 psi | 73% | 3287 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 98% | 40,437 psi | 66% | 3255 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 37,260 psi | 61% | 3061 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 46,398 psi | 76% | 3337 fps | 99.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,583 psi | 70% | 3228 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 100 powders for .338 Lapua Mag. loaded with the .338 | 130gr | Sax MJG-SX. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,586 fps; across all powders the maximum-charge window runs from 2,260 fps to 3,586 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.338" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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, ReloadSwiss RS 70 rank at the top here: for .338 Lapua Mag. with the .338 | 130gr | Sax MJG-SX they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Accurate 3100, ADI AR 2209 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.