Load Specifications
Load data in caliber .338 Win Mag. with .338 | 210gr | Barnes XLC BT bullet and 95 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 and Hodgdon Superformance.
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>> | 84% | 56,275 psi | 90% | 2631 fps | 100% |
| Accurate 2495 | <<locked>> | 84% | 55,056 psi | 88% | 2674 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,708 psi | 88% | 2703 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 54,621 psi | 88% | 2648 fps | 96.4% |
| Accurate 4064 | <<locked>> | 90% | 55,579 psi | 89% | 2710 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 53,969 psi | 87% | 2776 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 86% | 54,824 psi | 88% | 2723 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 55,361 psi | 89% | 2717 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 84% | 53,708 psi | 86% | 2674 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 54,607 psi | 88% | 2657 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 53,679 psi | 86% | 2828 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 55,550 psi | 89% | 2743 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 56,231 psi | 90% | 2766 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 54,621 psi | 88% | 2818 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 96% | 56,057 psi | 90% | 2861 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,016 psi | 64% | 2582 fps | 98.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,353 psi | 71% | 2730 fps | 97.6% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 54,056 psi | 87% | 2733 fps | 99.4% |
| Bofors RP3 | <<locked>> | 90% | 53,345 psi | 86% | 2720 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 53,127 psi | 85% | 2677 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 84% | 55,535 psi | 89% | 2661 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 53,301 psi | 85% | 2710 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 54,534 psi | 87% | 2795 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 82% | 53,780 psi | 86% | 2661 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 53,867 psi | 86% | 2720 fps | 99% |
| Hodgdon H414 | <<locked>> | 94% | 54,346 psi | 87% | 2785 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 98% | 55,071 psi | 88% | 2746 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 86% | 55,419 psi | 89% | 2736 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 51,184 psi | 82% | 2707 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 54,244 psi | 87% | 2762 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 53,185 psi | 85% | 2789 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,810 psi | 57% | 1650 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 55,042 psi | 88% | 2717 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 53,882 psi | 86% | 2700 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 54,317 psi | 87% | 2694 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 92% | 53,853 psi | 86% | 2664 fps | 97.2% |
| IMR 4350ᴾ | <<locked>> | 100% | 56,014 psi | 90% | 2746 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 94% | 54,723 psi | 88% | 2707 fps | 97.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,544 psi | 78% | 2674 fps | 98.8% |
| IMR 4895 | <<locked>> | 88% | 54,186 psi | 87% | 2743 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 53,708 psi | 86% | 2674 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 54,969 psi | 88% | 2707 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 54,273 psi | 87% | 2651 fps | 99.8% |
| Lovex S062 | <<locked>> | 90% | 55,245 psi | 89% | 2707 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 54,534 psi | 87% | 2707 fps | 98.5% |
| Lovex S070 | <<locked>> | 98% | 55,143 psi | 88% | 2736 fps | 97.7% |
| Norma 201 | <<locked>> | 86% | 54,070 psi | 87% | 2674 fps | 100% |
| Norma 202 | <<locked>> | 86% | 54,143 psi | 87% | 2674 fps | 100% |
| Norma 203B | <<locked>> | 90% | 55,521 psi | 89% | 2753 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 55,956 psi | 90% | 2805 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 90% | 55,637 psi | 89% | 2776 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 54,795 psi | 88% | 2802 fps | 98.3% |
| Ramshot TAC | <<locked>> | 84% | 53,867 psi | 86% | 2690 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 84% | 53,374 psi | 86% | 2707 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 82% | 54,520 psi | 87% | 2674 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,506 psi | 59% | 1693 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 54,172 psi | 87% | 2703 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 52,997 psi | 85% | 2776 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 55,608 psi | 89% | 2861 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 53,069 psi | 85% | 2789 fps | 99.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 56,362 psi | 90% | 2864 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 84% | 55,709 psi | 89% | 2664 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,650 psi | 88% | 2674 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 56,420 psi | 90% | 2756 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 53,127 psi | 85% | 2677 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 96% | 54,534 psi | 87% | 2707 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 86% | 54,969 psi | 88% | 2707 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,245 psi | 89% | 2707 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 55,143 psi | 88% | 2736 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 53,983 psi | 87% | 2759 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 55,985 psi | 90% | 2723 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 56,376 psi | 90% | 2743 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,172 psi | 88% | 2615 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 55,129 psi | 88% | 2612 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 54,534 psi | 87% | 2657 fps | 97.2% |
| Somchem S321 | <<locked>> | 82% | 54,984 psi | 88% | 2707 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 54,752 psi | 88% | 2615 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 55,230 psi | 89% | 2713 fps | 99.9% |
| Somchem S355 | <<locked>> | 92% | 53,403 psi | 86% | 2703 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 50,589 psi | 81% | 2762 fps | 100% |
| Unknown powder | <<locked>> | 96% | 53,809 psi | 86% | 2766 fps | 98.9% |
| Vihtavuori N130 | <<locked>> | 82% | 54,099 psi | 87% | 2569 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 54,694 psi | 88% | 2595 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 54,041 psi | 87% | 2641 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 53,824 psi | 86% | 2648 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 54,346 psi | 87% | 2684 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,244 psi | 87% | 2736 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 82% | 53,490 psi | 86% | 2680 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 53,548 psi | 86% | 2674 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,723 psi | 88% | 2785 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,671 psi | 70% | 2657 fps | 98.5% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 55,332 psi | 89% | 2733 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,433 psi | 87% | 2730 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 54,346 psi | 87% | 2785 fps | 97.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,129 psi | 58% | 2582 fps | 98.3% |
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% | 50,111 psi | 80% | 2546 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 48,675 psi | 78% | 2585 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 48,240 psi | 77% | 2608 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 48,138 psi | 77% | 2546 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 41,452 psi | 66% | 2487 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 34,548 psi | 55% | 2418 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 45,876 psi | 74% | 2575 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 39,073 psi | 63% | 2434 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,659 psi | 76% | 2579 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 48,269 psi | 77% | 2572 fps | 100% |
| Alliant Power Pro 2000-MR | 57.8 gr | 80% | 41,640 psi | 67% | 2605 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,044 psi | 63% | 2461 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,727 psi | 67% | 2520 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 84% | 34,563 psi | 55% | 2421 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 33,895 psi | 54% | 2434 fps | 96.8% |
| Alliant Reloder-23 | <<locked>> | 92% | 31,966 psi | 51% | 2385 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 39,001 psi | 63% | 2612 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,933 psi | 72% | 2582 fps | 98.2% |
| Bofors RP3 | <<locked>> | 80% | 39,088 psi | 63% | 2474 fps | 98.7% |
| Bofors RP7 | <<locked>> | 90% | 47,398 psi | 76% | 2582 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,385 psi | 79% | 2569 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,920 psi | 75% | 2608 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 50,908 psi | 82% | 2740 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 80% | 50,444 psi | 81% | 2615 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 39,653 psi | 64% | 2470 fps | 96.2% |
| Hodgdon H414 | <<locked>> | 88% | 44,875 psi | 72% | 2625 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 96% | 52,040 psi | 83% | 2700 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 46,238 psi | 74% | 2589 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 30,153 psi | 48% | 2280 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,047 psi | 67% | 2562 fps | 99.2% |
| Hodgdon Superformance | 70.6 gr | 94% | 49,734 psi | 80% | 2733 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,948 psi | 43% | 1476 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,278 psi | 66% | 2484 fps | 98.7% |
| IMR 3031 | <<locked>> | 80% | 42,438 psi | 68% | 2526 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,580 psi | 62% | 2415 fps | 97.3% |
| IMR 4166 Enduron | <<locked>> | 86% | 45,469 psi | 73% | 2520 fps | 95.3% |
| IMR 4350 | <<locked>> | 94% | 47,036 psi | 75% | 2602 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 45,861 psi | 74% | 2559 fps | 95.3% |
| IMR 4831 | <<locked>> | 88% | 34,156 psi | 55% | 2392 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 42,656 psi | 68% | 2546 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 80% | 47,659 psi | 76% | 2579 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 45,498 psi | 73% | 2566 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,832 psi | 73% | 2513 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 41,539 psi | 67% | 2480 fps | 99.3% |
| Lovex S065 | <<locked>> | 86% | 40,843 psi | 65% | 2467 fps | 95.6% |
| Lovex S070 | <<locked>> | 90% | 43,642 psi | 70% | 2543 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 45,440 psi | 73% | 2536 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 45,339 psi | 73% | 2539 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,133 psi | 66% | 2510 fps | 98.4% |
| Norma URP | <<locked>> | 84% | 34,563 psi | 55% | 2411 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 40,480 psi | 65% | 2520 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 92% | 42,902 psi | 69% | 2595 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 47,674 psi | 76% | 2589 fps | 97.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,007 psi | 75% | 2605 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,343 psi | 82% | 2628 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,282 psi | 44% | 1509 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,293 psi | 68% | 2497 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,540 psi | 70% | 2615 fps | 98.4% |
| ReloadSwiss RS 60 | 56.9 gr | 80% | 35,868 psi | 58% | 2497 fps | 99.4% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 36,260 psi | 58% | 2480 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 38,464 psi | 62% | 2530 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 49,821 psi | 80% | 2575 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,497 psi | 70% | 2493 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 80% | 36,927 psi | 59% | 2421 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 47,398 psi | 76% | 2582 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 86% | 40,843 psi | 65% | 2467 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,498 psi | 73% | 2566 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,539 psi | 67% | 2480 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 90% | 43,642 psi | 70% | 2543 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,231 psi | 60% | 2457 fps | 97.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,383 psi | 74% | 2569 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,237 psi | 71% | 2549 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,398 psi | 74% | 2484 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,856 psi | 62% | 2362 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 45,382 psi | 73% | 2510 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 51,735 psi | 83% | 2661 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 46,035 psi | 74% | 2487 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,759 psi | 73% | 2562 fps | 99% |
| Somchem S355 | <<locked>> | 80% | 37,536 psi | 60% | 2421 fps | 98% |
| Somchem S365 | <<locked>> | 80% | 27,862 psi | 45% | 2270 fps | 95.8% |
| Unknown powder | <<locked>> | 84% | 37,246 psi | 60% | 2461 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 51,068 psi | 82% | 2526 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,642 psi | 70% | 2434 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,743 psi | 69% | 2474 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,525 psi | 68% | 2474 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,401 psi | 52% | 2290 fps | 97.8% |
| Vihtavuori N160 | <<locked>> | 82% | 35,056 psi | 56% | 2388 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 50,154 psi | 80% | 2631 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,148 psi | 68% | 2490 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 35,694 psi | 57% | 2434 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 90% | 32,401 psi | 52% | 2411 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,720 psi | 51% | 2290 fps | 96.1% |
| Winchester 748 | <<locked>> | 80% | 51,082 psi | 82% | 2680 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 44,875 psi | 72% | 2625 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 94% | 30,356 psi | 49% | 2405 fps | 95.1% |
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 95 powders for .338 Win Mag. loaded with the .338 | 210gr | Barnes XLC BT. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,864 fps; across all powders the maximum-charge window runs from 1,650 fps to 2,864 fps. Alliant Reloder-16 gives the best case fill at 100 %, and 95 of the 95 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 210.0 gr projectile in 0.338" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-16, Alliant Reloder-23, Alliant Reloder-26 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 60, Hodgdon Superformance rank at the top here: for .338 Win Mag. with the .338 | 210gr | Barnes XLC 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.