Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 225gr | Barnes TAC-TX BT bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and ADI AR 2213.
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 3100 | <<locked>> | 96% | 51,866 psi | 85% | 2749 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 53,664 psi | 88% | 2792 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 54,375 psi | 89% | 2894 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 82% | 52,576 psi | 86% | 2713 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,810 psi | 90% | 2844 fps | 99% |
| ADI AR 2213 | <<locked>> | 96% | 52,562 psi | 86% | 2841 fps | 97.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,551 psi | 63% | 2621 fps | 97.4% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 55,027 psi | 90% | 2841 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 53,505 psi | 88% | 2736 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,853 psi | 90% | 2848 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 52,199 psi | 86% | 2812 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,317 psi | 89% | 2831 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 96% | 52,025 psi | 85% | 2835 fps | 98.8% |
| Alliant Reloder-23 | <<locked>> | 98% | 52,808 psi | 87% | 2815 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,733 psi | 80% | 2812 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 52,721 psi | 87% | 2897 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,534 psi | 90% | 2874 fps | 99% |
| Bofors RP3 | <<locked>> | 82% | 54,128 psi | 89% | 2749 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 44,570 psi | 73% | 2736 fps | 96.6% |
| Bofors RP5 | <<locked>> | 96% | 52,025 psi | 85% | 2835 fps | 98.8% |
| Bofors RP7 | <<locked>> | 86% | 53,548 psi | 88% | 2743 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,182 psi | 79% | 2759 fps | 97.6% |
| Hodgdon H380 | <<locked>> | 82% | 54,346 psi | 89% | 2766 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 52,228 psi | 86% | 2789 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 84% | 51,880 psi | 85% | 2753 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 94% | 52,620 psi | 86% | 2782 fps | 97.1% |
| Hodgdon H4831 SC | <<locked>> | 94% | 51,459 psi | 84% | 2762 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 55,071 psi | 90% | 2772 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,747 psi | 78% | 2861 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 86% | 52,301 psi | 86% | 2822 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,695 psi | 60% | 1745 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 54,955 psi | 90% | 2782 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 84% | 51,851 psi | 85% | 2717 fps | 99.4% |
| IMR 4831 | <<locked>> | 90% | 54,273 psi | 89% | 2785 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,041 psi | 89% | 2772 fps | 97.5% |
| IMR 7828 SSC | <<locked>> | 98% | 53,650 psi | 88% | 2871 fps | 98% |
| Lovex S065 | <<locked>> | 86% | 51,953 psi | 85% | 2713 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 53,403 psi | 88% | 2756 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,356 psi | 81% | 2710 fps | 99.7% |
| Norma 204 | <<locked>> | 88% | 52,054 psi | 85% | 2776 fps | 98.4% |
| Norma MRP | <<locked>> | 94% | 51,488 psi | 85% | 2854 fps | 99.5% |
| Norma URP | <<locked>> | 88% | 52,518 psi | 86% | 2776 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,317 psi | 89% | 2890 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 90% | 54,926 psi | 90% | 2831 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,388 psi | 86% | 2828 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,405 psi | 61% | 1785 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,259 psi | 89% | 2756 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 51,648 psi | 85% | 2802 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 53,664 psi | 88% | 2812 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 52,069 psi | 85% | 2838 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,819 psi | 79% | 2854 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 84% | 54,389 psi | 89% | 2746 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 52,881 psi | 87% | 2759 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 94% | 53,519 psi | 88% | 2815 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 86% | 53,548 psi | 88% | 2743 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 86% | 51,953 psi | 85% | 2713 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 88% | 53,403 psi | 88% | 2756 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 52,402 psi | 86% | 2753 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,940 psi | 90% | 2631 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,926 psi | 90% | 2720 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 53,069 psi | 87% | 2812 fps | 98.9% |
| Somchem S355 | <<locked>> | 84% | 54,346 psi | 89% | 2743 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,230 psi | 89% | 2749 fps | 97.3% |
| Somchem S365 | <<locked>> | 90% | 52,330 psi | 86% | 2779 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,056 psi | 89% | 2792 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 84% | 52,098 psi | 86% | 2671 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,505 psi | 89% | 2772 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 53,461 psi | 88% | 2769 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 88% | 53,476 psi | 88% | 2776 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 55,071 psi | 90% | 2841 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 51,663 psi | 85% | 2848 fps | 97.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,981 psi | 84% | 2818 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,027 psi | 89% | 2736 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 52,417 psi | 86% | 2792 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,055 psi | 87% | 2943 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,157 psi | 89% | 2789 fps | 98.9% |
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 3100 | <<locked>> | 82% | 31,850 psi | 52% | 2365 fps | 95.8% |
| Accurate 4350 | <<locked>> | 80% | 40,582 psi | 67% | 2569 fps | 99.5% |
| Accurate MAGPRO | <<locked>> | 92% | 47,036 psi | 77% | 2766 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 49,313 psi | 81% | 2664 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 39,204 psi | 64% | 2556 fps | 95.4% |
| ADI AR 2213 | 83.3 gr | 90% | 42,743 psi | 70% | 2657 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 96% | 33,779 psi | 55% | 2497 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 39,421 psi | 65% | 2556 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,183 psi | 82% | 2687 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,392 psi | 65% | 2582 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,049 psi | 74% | 2697 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 38,986 psi | 64% | 2549 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 88% | 39,523 psi | 65% | 2602 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,790 psi | 47% | 2343 fps | 98.1% |
| Alliant Reloder-25 | <<locked>> | 86% | 30,647 psi | 50% | 2411 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 31,038 psi | 51% | 2457 fps | 96.9% |
| Bofors RP15 | <<locked>> | 90% | 39,001 psi | 64% | 2589 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 50,676 psi | 83% | 2700 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 41,481 psi | 68% | 2674 fps | 95.7% |
| Bofors RP5 | <<locked>> | 88% | 39,523 psi | 65% | 2602 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 44,164 psi | 73% | 2582 fps | 97.9% |
| Hodgdon H1000 | <<locked>> | 96% | 41,930 psi | 69% | 2635 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 50,966 psi | 84% | 2717 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 42,641 psi | 70% | 2621 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 80% | 45,513 psi | 75% | 2641 fps | 97.6% |
| Hodgdon H4831 | <<locked>> | 90% | 45,890 psi | 75% | 2667 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 90% | 44,860 psi | 74% | 2648 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,927 psi | 61% | 2474 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 36,492 psi | 60% | 2602 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 41,640 psi | 68% | 2635 fps | 97.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,369 psi | 45% | 1558 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,871 psi | 65% | 2513 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,730 psi | 75% | 2612 fps | 98.6% |
| IMR 4831 | <<locked>> | 80% | 38,885 psi | 64% | 2523 fps | 99.3% |
| IMR 4955 Enduron | <<locked>> | 88% | 44,744 psi | 73% | 2612 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 92% | 43,714 psi | 72% | 2690 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 43,120 psi | 71% | 2562 fps | 99.1% |
| Lovex S070 | <<locked>> | 80% | 41,365 psi | 68% | 2546 fps | 98% |
| Lovex S071 | <<locked>> | 86% | 31,111 psi | 51% | 2346 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 39,537 psi | 65% | 2543 fps | 95.4% |
| Norma MRP | 78.4 gr | 82% | 33,547 psi | 55% | 2490 fps | 95% |
| Norma URP | <<locked>> | 80% | 40,277 psi | 66% | 2566 fps | 99.4% |
| Ramshot Grand | <<locked>> | 92% | 43,569 psi | 72% | 2700 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 39,175 psi | 64% | 2556 fps | 98% |
| Ramshot Magnum | <<locked>> | 90% | 35,940 psi | 59% | 2513 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,920 psi | 46% | 1598 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,792 psi | 83% | 2700 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,877 psi | 79% | 2746 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,553 psi | 67% | 2592 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,044 psi | 64% | 2598 fps | 99% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 35,839 psi | 59% | 2585 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 80% | 47,659 psi | 78% | 2648 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 43,395 psi | 71% | 2595 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 84% | 38,087 psi | 63% | 2533 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 44,164 psi | 73% | 2582 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,120 psi | 71% | 2562 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 80% | 41,365 psi | 68% | 2546 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,153 psi | 81% | 2703 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,602 psi | 80% | 2543 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,090 psi | 69% | 2507 fps | 98% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 37,739 psi | 62% | 2526 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 47,834 psi | 79% | 2644 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 44,367 psi | 73% | 2585 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 36,898 psi | 61% | 2520 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 36,158 psi | 59% | 2461 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 45,745 psi | 75% | 2575 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,742 psi | 69% | 2562 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 86% | 35,795 psi | 59% | 2448 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 41,118 psi | 68% | 2562 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 32,010 psi | 53% | 2415 fps | 98.1% |
| Vihtavuori N560 | 86 gr | 90% | 44,904 psi | 74% | 2723 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 96% | 44,251 psi | 73% | 2700 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,698 psi | 67% | 2530 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,801 psi | 70% | 2625 fps | 98.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,367 psi | 42% | 2326 fps | 97.5% |
| Winchester Supreme 780 | <<locked>> | 86% | 38,087 psi | 63% | 2503 fps | 95.2% |
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 76 powders for .338 Lapua Mag. loaded with the .338 | 225gr | Barnes TAC-TX BT. Winchester StaBALL HD delivers the highest muzzle velocity at 2,943 fps; across all powders the maximum-charge window runs from 1,745 fps to 2,943 fps. ADI AR 2225 gives the best case fill at 100 %, and 76 of the 76 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 225.0 gr projectile in 0.338" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-25, Bofors RP15 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. Norma MRP, Vihtavuori N560, ADI AR 2213 rank at the top here: for .338 Lapua Mag. with the .338 | 225gr | Barnes TAC-TX BT 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.