Load Specifications
Bullet Manufacturer:Apex Outdoors
Bullet Weight:211 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:1:11.0
Load data in caliber .338 Win Mag. with .338 | 211gr | Apex Outdoors Afterburner bullet and 103 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 ReloadSwiss RS 52.
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% | 53,621 psi | 86% | 2579 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 55,608 psi | 89% | 2651 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 55,172 psi | 88% | 2644 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 53,417 psi | 86% | 2657 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 54,868 psi | 88% | 2631 fps | 95.9% |
| Accurate 4064 | <<locked>> | 94% | 54,694 psi | 88% | 2684 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,009 psi | 80% | 2694 fps | 98.6% |
| Accurate LT-30 | <<locked>> | 82% | 56,028 psi | 90% | 2566 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 56,434 psi | 90% | 2589 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,767 psi | 89% | 2713 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 94% | 53,359 psi | 86% | 2661 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 88% | 55,143 psi | 88% | 2671 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 55,085 psi | 88% | 2648 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 53,359 psi | 86% | 2720 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 55,158 psi | 88% | 2822 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 56,173 psi | 90% | 2730 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 53,301 psi | 85% | 2582 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 53,751 psi | 86% | 2703 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,095 psi | 79% | 2700 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 98% | 53,113 psi | 85% | 2792 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,954 psi | 56% | 2441 fps | 96.4% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,114 psi | 88% | 2562 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 55,332 psi | 89% | 2723 fps | 99.3% |
| Bofors RP3 | <<locked>> | 94% | 53,374 psi | 86% | 2700 fps | 99.9% |
| Bofors RP7 | <<locked>> | 98% | 53,867 psi | 86% | 2657 fps | 96% |
| Hodgdon Benchmark | <<locked>> | 86% | 53,824 psi | 86% | 2608 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 54,070 psi | 87% | 2700 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 55,767 psi | 89% | 2789 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 84% | 55,753 psi | 89% | 2667 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 53,156 psi | 85% | 2644 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 54,520 psi | 87% | 2707 fps | 98.8% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 53,316 psi | 85% | 2743 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 90% | 56,304 psi | 90% | 2723 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,295 psi | 73% | 2589 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 55,216 psi | 89% | 2756 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 54,636 psi | 88% | 2776 fps | 96.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,099 psi | 56% | 1611 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 54,085 psi | 87% | 2677 fps | 99.8% |
| IMR 3031 | <<locked>> | 90% | 55,796 psi | 89% | 2707 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 56,202 psi | 90% | 2694 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 90% | 53,417 psi | 86% | 2625 fps | 96.5% |
| IMR 4198 | <<locked>> | 82% | 53,403 psi | 86% | 2539 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 55,738 psi | 89% | 2690 fps | 96.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,572 psi | 76% | 2638 fps | 98.3% |
| IMR 4895 | <<locked>> | 92% | 55,071 psi | 88% | 2733 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 88% | 55,143 psi | 88% | 2671 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 55,506 psi | 89% | 2661 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 55,187 psi | 88% | 2690 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,782 psi | 89% | 2644 fps | 99.8% |
| Lovex S062 | <<locked>> | 94% | 55,796 psi | 89% | 2690 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,723 psi | 88% | 2684 fps | 98.1% |
| Lovex S070ᴾ | <<locked>> | 100% | 52,156 psi | 84% | 2664 fps | 96.6% |
| Norma 201 | <<locked>> | 90% | 54,795 psi | 88% | 2664 fps | 100% |
| Norma 202 | <<locked>> | 90% | 55,027 psi | 88% | 2667 fps | 100% |
| Norma 203B | <<locked>> | 94% | 56,057 psi | 90% | 2740 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 49,443 psi | 79% | 2684 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 92% | 53,040 psi | 85% | 2713 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,733 psi | 78% | 2677 fps | 96.6% |
| Ramshot TAC | <<locked>> | 88% | 55,434 psi | 89% | 2684 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 88% | 54,491 psi | 87% | 2700 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 86% | 56,043 psi | 90% | 2671 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,491 psi | 57% | 1647 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 54,694 psi | 88% | 2654 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 54,969 psi | 88% | 2687 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 53,606 psi | 86% | 2762 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 53,142 psi | 85% | 2795 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,443 psi | 79% | 2713 fps | 98.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,198 psi | 80% | 2733 fps | 97.8% |
| Rottweil R 901 | <<locked>> | 88% | 56,144 psi | 90% | 2651 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 55,143 psi | 88% | 2661 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 52,968 psi | 85% | 2687 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 98% | 53,867 psi | 86% | 2657 fps | 96% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,723 psi | 88% | 2684 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 90% | 55,187 psi | 88% | 2690 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 55,796 psi | 89% | 2690 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 52,156 psi | 84% | 2664 fps | 96.6% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 54,259 psi | 87% | 2621 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 54,723 psi | 88% | 2746 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 54,288 psi | 87% | 2602 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 53,664 psi | 86% | 2661 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 54,244 psi | 87% | 2687 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 53,142 psi | 85% | 2562 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 56,188 psi | 90% | 2602 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 55,274 psi | 89% | 2638 fps | 96.8% |
| Somchem S321 | <<locked>> | 86% | 56,246 psi | 90% | 2703 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 55,825 psi | 90% | 2608 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 53,069 psi | 85% | 2657 fps | 99.6% |
| Somchem S355 | <<locked>> | 96% | 53,693 psi | 86% | 2687 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,382 psi | 71% | 2641 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 86% | 56,260 psi | 90% | 2572 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 53,171 psi | 85% | 2552 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 54,331 psi | 87% | 2628 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 55,332 psi | 89% | 2644 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,085 psi | 88% | 2667 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,040 psi | 83% | 2684 fps | 98.7% |
| Vihtavuori N530 | <<locked>> | 88% | 55,666 psi | 89% | 2671 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 53,505 psi | 86% | 2641 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 51,227 psi | 82% | 2690 fps | 98.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,420 psi | 60% | 2520 fps | 96.5% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,910 psi | 85% | 2671 fps | 99.9% |
| Winchester 748 | <<locked>> | 88% | 54,824 psi | 88% | 2713 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 53,316 psi | 85% | 2743 fps | 96.7% |
| Winchester StaBALL Match | <<locked>> | 90% | 53,853 psi | 86% | 2694 fps | 99.9% |
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 2015 | <<locked>> | 80% | 44,788 psi | 72% | 2451 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,718 psi | 78% | 2556 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,753 psi | 61% | 2382 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,758 psi | 70% | 2513 fps | 99.9% |
| Accurate 2700 | <<locked>> | 90% | 51,503 psi | 83% | 2579 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 35,665 psi | 57% | 2372 fps | 99.7% |
| Accurate 4350 | <<locked>> | 90% | 35,723 psi | 57% | 2434 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 52,547 psi | 84% | 2520 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,939 psi | 85% | 2543 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 41,060 psi | 66% | 2467 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 80% | 35,012 psi | 56% | 2326 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,018 psi | 69% | 2477 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 80% | 42,670 psi | 68% | 2477 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,908 psi | 80% | 2667 fps | 99.7% |
| Alliant Power Pro 2000-MR | 53.7 gr | 80% | 37,043 psi | 59% | 2480 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,447 psi | 55% | 2349 fps | 97.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,444 psi | 81% | 2543 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,970 psi | 59% | 2405 fps | 96.3% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,347 psi | 58% | 2441 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 82% | 31,705 psi | 51% | 2356 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 33,025 psi | 53% | 2392 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,634 psi | 83% | 2520 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,856 psi | 64% | 2464 fps | 96.6% |
| Bofors RP3 | <<locked>> | 80% | 33,997 psi | 55% | 2352 fps | 97.1% |
| Bofors RP7 | <<locked>> | 96% | 50,792 psi | 81% | 2612 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,918 psi | 72% | 2470 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,481 psi | 67% | 2497 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,397 psi | 73% | 2625 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 80% | 49,110 psi | 79% | 2575 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,879 psi | 80% | 2598 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 39,668 psi | 64% | 2451 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 96% | 46,876 psi | 75% | 2638 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 41,408 psi | 66% | 2480 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 31,372 psi | 50% | 2297 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,304 psi | 60% | 2451 fps | 98% |
| Hodgdon Superformance | <<locked>> | 98% | 50,879 psi | 82% | 2717 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,252 psi | 42% | 1437 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,697 psi | 64% | 2434 fps | 98.1% |
| IMR 3031 | <<locked>> | 80% | 40,596 psi | 65% | 2480 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,724 psi | 59% | 2359 fps | 96.3% |
| IMR 4166 Enduron | <<locked>> | 86% | 47,166 psi | 76% | 2523 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 50,502 psi | 81% | 2503 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 49,429 psi | 79% | 2592 fps | 95.6% |
| IMR 4831 | <<locked>> | 92% | 36,912 psi | 59% | 2444 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 37,840 psi | 61% | 2434 fps | 97.3% |
| IMR 8208 XBR | <<locked>> | 80% | 43,018 psi | 69% | 2477 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 80% | 48,588 psi | 78% | 2562 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 39,755 psi | 64% | 2451 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 41,437 psi | 66% | 2411 fps | 98% |
| Lovex S062 | <<locked>> | 80% | 36,593 psi | 59% | 2365 fps | 98.1% |
| Lovex S065 | <<locked>> | 90% | 40,799 psi | 65% | 2448 fps | 95% |
| Lovex S070 | <<locked>> | 96% | 46,137 psi | 74% | 2566 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 40,437 psi | 65% | 2428 fps | 98.9% |
| Norma 202 | <<locked>> | 80% | 40,495 psi | 65% | 2441 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 36,361 psi | 58% | 2395 fps | 96.8% |
| Norma URP | <<locked>> | 90% | 36,289 psi | 58% | 2438 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 35,665 psi | 57% | 2402 fps | 96.3% |
| Ramshot Hunter | <<locked>> | 96% | 43,033 psi | 69% | 2572 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 42,989 psi | 69% | 2480 fps | 95.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,192 psi | 68% | 2500 fps | 98.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,456 psi | 74% | 2523 fps | 98.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,498 psi | 42% | 1473 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,167 psi | 77% | 2559 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 45,556 psi | 73% | 2536 fps | 95.5% |
| ReloadSwiss RS 52 | 52.1 gr | 80% | 38,290 psi | 61% | 2497 fps | 96.7% |
| ReloadSwiss RS 60 | 52.9 gr | 80% | 31,647 psi | 51% | 2369 fps | 97.8% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 37,927 psi | 61% | 2500 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,292 psi | 66% | 2562 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 44,498 psi | 71% | 2477 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,580 psi | 62% | 2385 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 80% | 32,039 psi | 51% | 2300 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 96% | 50,792 psi | 81% | 2612 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 40,799 psi | 65% | 2448 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,755 psi | 64% | 2451 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 36,593 psi | 59% | 2365 fps | 98.1% |
| Shooters World SW4350 | <<locked>> | 96% | 46,137 psi | 74% | 2566 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,865 psi | 82% | 2575 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,909 psi | 53% | 2343 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 51,053 psi | 82% | 2559 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,147 psi | 66% | 2451 fps | 96% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,639 psi | 64% | 2441 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,916 psi | 67% | 2392 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,693 psi | 56% | 2267 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 48,631 psi | 78% | 2539 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 46,151 psi | 74% | 2552 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 41,452 psi | 66% | 2395 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,596 psi | 65% | 2451 fps | 97.7% |
| Somchem S355 | <<locked>> | 80% | 32,909 psi | 53% | 2306 fps | 96.1% |
| Somchem S365 | <<locked>> | 86% | 28,776 psi | 46% | 2287 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 47,326 psi | 76% | 2454 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,090 psi | 67% | 2388 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,637 psi | 60% | 2375 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,319 psi | 61% | 2382 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 31,270 psi | 50% | 2251 fps | 97.1% |
| Vihtavuori N160 | <<locked>> | 90% | 37,971 psi | 61% | 2438 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 43,149 psi | 69% | 2477 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 80% | 36,840 psi | 59% | 2369 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 37,173 psi | 60% | 2438 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 98% | 35,056 psi | 56% | 2464 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 31,792 psi | 51% | 2270 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 42,264 psi | 68% | 2516 fps | 99.6% |
| Winchester 760 | <<locked>> | 96% | 46,876 psi | 75% | 2638 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,696 psi | 62% | 2438 fps | 98% |
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 103 powders for .338 Win Mag. loaded with the .338 | 211gr | Apex Outdoors Afterburner. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,822 fps; across all powders the maximum-charge window runs from 1,611 fps to 2,822 fps. Accurate 4350 gives the best case fill at 100 %, and 103 of the 103 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 211.0 gr projectile in 0.338" calls for a 1:11.0 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, ReloadSwiss RS 52 rank at the top here: for .338 Win Mag. with the .338 | 211gr | Apex Outdoors Afterburner 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.