Load Specifications
Bullet Manufacturer:Barnes
Bullet Weight:225 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:.338 Win Mag. load data
Case Length (l3):2.5"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:86 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:12.0
Load data in caliber .338 Win Mag. with .338 | 225gr | Barnes TAC-TX BT bullet and 105 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 Power Pro 2000-MR and Alliant Reloder-17.
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>> | 86% | 54,085 psi | 87% | 2513 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 55,738 psi | 89% | 2582 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 55,100 psi | 88% | 2575 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 54,041 psi | 87% | 2595 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 55,579 psi | 89% | 2579 fps | 96.9% |
| Accurate 4064 | <<locked>> | 94% | 54,853 psi | 88% | 2615 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,865 psi | 82% | 2641 fps | 99.2% |
| ADI AR 2206H | <<locked>> | 88% | 53,069 psi | 85% | 2605 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 54,259 psi | 87% | 2608 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 88% | 55,753 psi | 89% | 2608 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 56,275 psi | 90% | 2582 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 53,998 psi | 87% | 2661 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 56,376 psi | 90% | 2769 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 53,809 psi | 86% | 2628 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 53,911 psi | 86% | 2516 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 54,534 psi | 87% | 2648 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,922 psi | 80% | 2651 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 98% | 54,244 psi | 87% | 2740 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,157 psi | 56% | 2398 fps | 97.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 38,754 psi | 62% | 2533 fps | 96.3% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,985 psi | 90% | 2503 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 56,434 psi | 90% | 2674 fps | 99.7% |
| Bofors RP3 | <<locked>> | 94% | 54,070 psi | 87% | 2641 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 54,563 psi | 87% | 2608 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 86% | 54,317 psi | 87% | 2549 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 54,882 psi | 88% | 2641 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 53,171 psi | 85% | 2680 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 82% | 53,127 psi | 85% | 2559 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 53,998 psi | 87% | 2585 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 55,288 psi | 89% | 2651 fps | 99.3% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 54,476 psi | 87% | 2697 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 98% | 55,550 psi | 89% | 2661 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 88% | 53,606 psi | 86% | 2618 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,992 psi | 74% | 2539 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 56,434 psi | 90% | 2697 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 55,666 psi | 89% | 2733 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,056 psi | 56% | 1565 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 55,071 psi | 88% | 2621 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 53,214 psi | 85% | 2598 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 53,548 psi | 86% | 2589 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 90% | 53,896 psi | 86% | 2572 fps | 97.5% |
| IMR 4198 | <<locked>> | 82% | 54,143 psi | 87% | 2477 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 51,300 psi | 82% | 2582 fps | 96.5% |
| IMR 4451 Enduron | <<locked>> | 96% | 53,476 psi | 86% | 2595 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,385 psi | 78% | 2589 fps | 99% |
| IMR 4895 | <<locked>> | 92% | 55,912 psi | 90% | 2677 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 55,753 psi | 89% | 2608 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 55,898 psi | 90% | 2598 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 55,898 psi | 90% | 2628 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 56,391 psi | 90% | 2585 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 53,214 psi | 85% | 2585 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 55,680 psi | 89% | 2631 fps | 98.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 52,765 psi | 85% | 2612 fps | 97.6% |
| Norma 201 | <<locked>> | 90% | 54,955 psi | 88% | 2598 fps | 100% |
| Norma 202 | <<locked>> | 90% | 55,840 psi | 90% | 2605 fps | 100% |
| Norma 203B | <<locked>> | 92% | 53,693 psi | 86% | 2635 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 50,401 psi | 81% | 2635 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 92% | 54,186 psi | 87% | 2661 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,530 psi | 79% | 2628 fps | 97.7% |
| Ramshot TAC | <<locked>> | 88% | 56,246 psi | 90% | 2631 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 88% | 55,477 psi | 89% | 2644 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 53,432 psi | 86% | 2566 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,389 psi | 57% | 1601 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 55,303 psi | 89% | 2592 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 55,869 psi | 90% | 2635 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 54,578 psi | 88% | 2707 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 54,172 psi | 87% | 2740 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,705 psi | 81% | 2667 fps | 99.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,256 psi | 82% | 2690 fps | 98.8% |
| Rottweil R 901 | <<locked>> | 88% | 55,898 psi | 90% | 2582 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 55,608 psi | 89% | 2598 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 53,621 psi | 86% | 2628 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 54,563 psi | 87% | 2608 fps | 97.1% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 55,680 psi | 89% | 2631 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 90% | 55,898 psi | 90% | 2628 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 53,214 psi | 85% | 2585 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 52,765 psi | 85% | 2612 fps | 97.6% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 55,056 psi | 88% | 2566 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 55,883 psi | 90% | 2690 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 54,969 psi | 88% | 2539 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 54,375 psi | 87% | 2608 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 54,882 psi | 88% | 2628 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 53,867 psi | 86% | 2503 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 53,737 psi | 86% | 2503 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 56,434 psi | 90% | 2592 fps | 97.8% |
| Somchem S321 | <<locked>> | 84% | 53,272 psi | 85% | 2592 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 56,086 psi | 90% | 2543 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 54,027 psi | 87% | 2602 fps | 99.9% |
| Somchem S355 | <<locked>> | 96% | 54,389 psi | 87% | 2628 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,020 psi | 72% | 2589 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 53,693 psi | 86% | 2470 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 54,027 psi | 87% | 2490 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 55,143 psi | 88% | 2566 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 56,231 psi | 90% | 2582 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,956 psi | 90% | 2608 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 53,171 psi | 85% | 2635 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 88% | 56,289 psi | 90% | 2608 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 54,288 psi | 87% | 2582 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,069 psi | 83% | 2638 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,594 psi | 60% | 2467 fps | 97.5% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 54,114 psi | 87% | 2621 fps | 100% |
| Winchester 748 | <<locked>> | 88% | 55,927 psi | 90% | 2654 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 54,766 psi | 88% | 2700 fps | 97.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,140 psi | 50% | 2372 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 90% | 54,795 psi | 88% | 2638 fps | 100% |
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% | 44,672 psi | 72% | 2385 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,834 psi | 78% | 2490 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,796 psi | 59% | 2310 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,918 psi | 70% | 2451 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 48,573 psi | 78% | 2477 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 34,824 psi | 56% | 2300 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 33,257 psi | 53% | 2326 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 41,075 psi | 66% | 2411 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 80% | 35,143 psi | 56% | 2277 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,207 psi | 69% | 2421 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 43,047 psi | 69% | 2411 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,444 psi | 81% | 2605 fps | 99.9% |
| Alliant Power Pro 2000-MR | 54.1 gr | 80% | 37,289 psi | 60% | 2434 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,272 psi | 55% | 2293 fps | 97.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,662 psi | 81% | 2477 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,869 psi | 59% | 2349 fps | 97.2% |
| Alliant Reloder-16 | <<locked>> | 88% | 34,418 psi | 55% | 2349 fps | 95.6% |
| Alliant Reloder-17 | 53.2 gr | 80% | 29,457 psi | 47% | 2251 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 96% | 31,024 psi | 50% | 2297 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 98% | 36,056 psi | 58% | 2470 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 52,446 psi | 84% | 2461 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,234 psi | 65% | 2415 fps | 97.5% |
| Bofors RP3 | <<locked>> | 80% | 33,576 psi | 54% | 2290 fps | 97.8% |
| Bofors RP7 | <<locked>> | 92% | 45,266 psi | 73% | 2464 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,281 psi | 73% | 2415 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,727 psi | 67% | 2441 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,948 psi | 74% | 2569 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 80% | 49,647 psi | 80% | 2513 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,343 psi | 81% | 2533 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 34,563 psi | 55% | 2293 fps | 95% |
| Hodgdon H414 | <<locked>> | 94% | 44,599 psi | 72% | 2539 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 94% | 48,994 psi | 79% | 2562 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 41,452 psi | 66% | 2421 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 29,356 psi | 47% | 2201 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,391 psi | 60% | 2395 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 96% | 48,182 psi | 77% | 2615 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,976 psi | 42% | 1394 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,045 psi | 64% | 2382 fps | 98.8% |
| IMR 3031 | <<locked>> | 80% | 40,843 psi | 65% | 2418 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,869 psi | 59% | 2306 fps | 97.2% |
| IMR 4166 Enduron | <<locked>> | 84% | 44,686 psi | 72% | 2425 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 51,155 psi | 82% | 2441 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 45,252 psi | 73% | 2487 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 90% | 44,367 psi | 71% | 2448 fps | 95.3% |
| IMR 4831 | <<locked>> | 88% | 32,547 psi | 52% | 2293 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 37,768 psi | 61% | 2375 fps | 98% |
| IMR 8208 XBR | <<locked>> | 80% | 43,207 psi | 69% | 2421 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 48,486 psi | 78% | 2497 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 39,827 psi | 64% | 2395 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 41,742 psi | 67% | 2359 fps | 98.7% |
| Lovex S062 | <<locked>> | 80% | 36,506 psi | 59% | 2310 fps | 98.7% |
| Lovex S065 | <<locked>> | 88% | 38,276 psi | 61% | 2346 fps | 95.2% |
| Lovex S070 | <<locked>> | 94% | 43,801 psi | 70% | 2467 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 40,118 psi | 64% | 2365 fps | 99.3% |
| Norma 202 | <<locked>> | 80% | 40,480 psi | 65% | 2379 fps | 100% |
| Norma 203B | <<locked>> | 80% | 36,230 psi | 58% | 2336 fps | 97.6% |
| Norma URP | <<locked>> | 88% | 34,098 psi | 55% | 2333 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 35,868 psi | 58% | 2352 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 94% | 40,756 psi | 65% | 2474 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 43,120 psi | 69% | 2425 fps | 96.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,438 psi | 68% | 2444 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,905 psi | 75% | 2470 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,165 psi | 42% | 1427 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,559 psi | 78% | 2497 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 40,248 psi | 65% | 2382 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,493 psi | 62% | 2441 fps | 97.6% |
| ReloadSwiss RS 60 | 53.2 gr | 80% | 31,415 psi | 50% | 2313 fps | 98.6% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 35,679 psi | 57% | 2398 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 39,015 psi | 63% | 2467 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 43,918 psi | 70% | 2408 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,189 psi | 61% | 2323 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 31,546 psi | 51% | 2241 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 92% | 45,266 psi | 73% | 2464 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 88% | 38,276 psi | 61% | 2346 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,827 psi | 64% | 2395 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 36,506 psi | 59% | 2310 fps | 98.7% |
| Shooters World SW4350 | <<locked>> | 94% | 43,801 psi | 70% | 2467 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 51,517 psi | 83% | 2520 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,764 psi | 53% | 2287 fps | 96.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 51,634 psi | 83% | 2497 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,046 psi | 66% | 2395 fps | 96.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,726 psi | 64% | 2385 fps | 98.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,930 psi | 67% | 2333 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,592 psi | 55% | 2211 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 43,062 psi | 69% | 2392 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 46,557 psi | 75% | 2497 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 41,263 psi | 66% | 2333 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,973 psi | 66% | 2398 fps | 98.5% |
| Somchem S355 | <<locked>> | 80% | 32,561 psi | 52% | 2247 fps | 96.9% |
| Somchem S365 | <<locked>> | 84% | 26,658 psi | 43% | 2182 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 47,514 psi | 76% | 2392 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,235 psi | 68% | 2329 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,565 psi | 60% | 2313 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,363 psi | 62% | 2320 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,980 psi | 50% | 2192 fps | 97.8% |
| Vihtavuori N160 | <<locked>> | 88% | 35,737 psi | 57% | 2336 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 43,294 psi | 69% | 2418 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 36,709 psi | 59% | 2306 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 34,940 psi | 56% | 2336 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 94% | 30,937 psi | 50% | 2313 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 29,559 psi | 47% | 2172 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 42,569 psi | 68% | 2457 fps | 99.9% |
| Winchester 760 | <<locked>> | 94% | 44,599 psi | 72% | 2539 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 98% | 29,196 psi | 47% | 2310 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,972 psi | 62% | 2385 fps | 98.7% |
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 105 powders for .338 Win Mag. loaded with the .338 | 225gr | Barnes TAC-TX BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,769 fps; across all powders the maximum-charge window runs from 1,565 fps to 2,769 fps. Accurate 4350 gives the best case fill at 100 %, and 105 of the 105 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 50–90 %, 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. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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 Power Pro 2000-MR, Alliant Reloder-17 rank at the top here: for .338 Win 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.