Load Specifications
Bullet Manufacturer:Nosler
Bullet Weight:230 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:.338 Blaser Mag. load data
Case Length (l3):2.5078"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:92.6 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:25.6"
Max. allowed Pressure:60,916 psi
Recommended Twist Rate:1:14.5
Load data in caliber .338 Blaser Mag. with .338 | 230gr | Nosler CT FailSafe bullet and 102 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-16 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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 52,040 psi | 85% | 2579 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 54,839 psi | 90% | 2641 fps | 98.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,919 psi | 75% | 2612 fps | 98.6% |
| Accurate 4064 | <<locked>> | 86% | 52,214 psi | 86% | 2628 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 51,866 psi | 85% | 2717 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 52,069 psi | 85% | 2654 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 52,895 psi | 87% | 2657 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,432 psi | 88% | 2753 fps | 97.6% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,273 psi | 89% | 2651 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 51,401 psi | 84% | 2769 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 53,301 psi | 88% | 2680 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 53,766 psi | 88% | 2700 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 52,924 psi | 87% | 2772 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 53,940 psi | 89% | 2799 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,417 psi | 86% | 2743 fps | 97.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,064 psi | 76% | 2684 fps | 96.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,381 psi | 71% | 2635 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,159 psi | 63% | 2549 fps | 97.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,994 psi | 80% | 2808 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,114 psi | 90% | 2720 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 53,766 psi | 88% | 2694 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,064 psi | 76% | 2684 fps | 96.4% |
| Bofors RP7 | <<locked>> | 92% | 53,693 psi | 88% | 2674 fps | 98.5% |
| Hodgdon BL-C2 | <<locked>> | 82% | 53,751 psi | 88% | 2680 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,491 psi | 89% | 2707 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 52,359 psi | 86% | 2736 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 94% | 53,098 psi | 87% | 2703 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 82% | 52,591 psi | 86% | 2664 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 52,968 psi | 87% | 2697 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 52,170 psi | 86% | 2697 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 54,766 psi | 90% | 2805 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,969 psi | 59% | 1637 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 52,576 psi | 86% | 2651 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 54,868 psi | 90% | 2667 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 55,013 psi | 90% | 2674 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 54,288 psi | 89% | 2654 fps | 98.9% |
| IMR 4350 | <<locked>> | 96% | 54,143 psi | 89% | 2703 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 52,185 psi | 86% | 2651 fps | 98.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 53,185 psi | 87% | 2720 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 55,100 psi | 90% | 2726 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 53,156 psi | 87% | 2687 fps | 95.8% |
| IMR 8208 XBR | <<locked>> | 82% | 54,273 psi | 89% | 2651 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 51,837 psi | 85% | 2628 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,418 psi | 89% | 2628 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 52,605 psi | 86% | 2635 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,056 psi | 90% | 2697 fps | 99.7% |
| Lovex S070 | <<locked>> | 94% | 52,852 psi | 87% | 2687 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,130 psi | 63% | 2470 fps | 96.9% |
| Norma 201 | <<locked>> | 84% | 54,128 psi | 89% | 2648 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,621 psi | 90% | 2644 fps | 100% |
| Norma 203B | <<locked>> | 86% | 52,982 psi | 87% | 2687 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,781 psi | 90% | 2753 fps | 97.7% |
| Norma MRPᴾ | <<locked>> | 100% | 48,646 psi | 80% | 2766 fps | 98.3% |
| Norma URP | <<locked>> | 96% | 54,389 psi | 89% | 2756 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 53,461 psi | 88% | 2713 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,822 psi | 85% | 2772 fps | 96.3% |
| Ramshot Hunter | <<locked>> | 96% | 53,258 psi | 87% | 2759 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 44,846 psi | 74% | 2635 fps | 96.5% |
| Ramshot TAC | <<locked>> | 82% | 54,070 psi | 89% | 2674 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 82% | 53,940 psi | 89% | 2687 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,593 psi | 60% | 1677 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,650 psi | 90% | 2694 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,230 psi | 89% | 2762 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 53,722 psi | 88% | 2795 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 51,576 psi | 85% | 2740 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,172 psi | 89% | 2818 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,592 psi | 90% | 2644 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 53,853 psi | 88% | 2687 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 51,764 psi | 85% | 2674 fps | 96.1% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,198 psi | 84% | 2723 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 92% | 53,693 psi | 88% | 2674 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,056 psi | 90% | 2697 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 51,837 psi | 85% | 2628 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 52,605 psi | 86% | 2635 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 52,852 psi | 87% | 2687 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 51,837 psi | 85% | 2697 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 52,779 psi | 87% | 2654 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 53,635 psi | 88% | 2674 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 51,982 psi | 85% | 2536 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 52,344 psi | 86% | 2539 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 51,663 psi | 85% | 2602 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 50,705 psi | 83% | 2717 fps | 97.4% |
| Somchem S335 | <<locked>> | 84% | 54,839 psi | 90% | 2582 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 52,446 psi | 86% | 2644 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,114 psi | 89% | 2684 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 52,663 psi | 86% | 2753 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,069 psi | 85% | 2707 fps | 98.3% |
| Unknown powder | <<locked>> | 92% | 51,764 psi | 85% | 2710 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 82% | 52,402 psi | 86% | 2523 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,737 psi | 90% | 2608 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 51,750 psi | 85% | 2579 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 52,025 psi | 85% | 2615 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 53,243 psi | 87% | 2700 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 44,889 psi | 74% | 2575 fps | 96.5% |
| Vihtavuori N530 | <<locked>> | 82% | 54,520 psi | 90% | 2648 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 53,214 psi | 87% | 2621 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 52,315 psi | 86% | 2707 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,341 psi | 79% | 2707 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 52,982 psi | 87% | 2674 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 52,359 psi | 86% | 2736 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,957 psi | 64% | 2671 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,375 psi | 89% | 2730 fps | 97.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 45,672 psi | 75% | 2490 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 39,682 psi | 65% | 2388 fps | 95.2% |
| Accurate 3100 | <<locked>> | 90% | 32,706 psi | 54% | 2352 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 43,207 psi | 71% | 2493 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,155 psi | 53% | 2352 fps | 96.7% |
| ADI AR 2206H | <<locked>> | 80% | 48,791 psi | 80% | 2605 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 41,510 psi | 68% | 2467 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 94% | 44,005 psi | 72% | 2592 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,908 psi | 84% | 2602 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,802 psi | 74% | 2657 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,408 psi | 68% | 2487 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,440 psi | 73% | 2552 fps | 99.7% |
| Alliant Reloder-16 | 56.9 gr | 80% | 32,242 psi | 53% | 2365 fps | 96.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 35,868 psi | 59% | 2480 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 94% | 43,352 psi | 71% | 2585 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 98% | 43,091 psi | 71% | 2628 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 84% | 26,484 psi | 43% | 2234 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 96% | 33,765 psi | 55% | 2441 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 86% | 30,037 psi | 49% | 2392 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,124 psi | 79% | 2615 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 41,336 psi | 68% | 2497 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 43,091 psi | 71% | 2628 fps | 95.6% |
| Bofors RP7 | <<locked>> | 82% | 39,305 psi | 65% | 2421 fps | 95.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,169 psi | 82% | 2631 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,061 psi | 69% | 2503 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 80% | 37,289 psi | 61% | 2464 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 86% | 41,539 psi | 68% | 2503 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 49,298 psi | 81% | 2615 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,689 psi | 49% | 2267 fps | 97.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,989 psi | 71% | 2552 fps | 100% |
| Hodgdon Superformance | 68 gr | 84% | 38,450 psi | 63% | 2513 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,876 psi | 44% | 1463 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,801 psi | 72% | 2510 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 45,455 psi | 75% | 2536 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,828 psi | 67% | 2448 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 40,277 psi | 66% | 2415 fps | 96.3% |
| IMR 4350 | <<locked>> | 86% | 39,639 psi | 65% | 2454 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,450 psi | 63% | 2405 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 28,326 psi | 47% | 2238 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 45,542 psi | 75% | 2579 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 98% | 49,879 psi | 82% | 2635 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 50,908 psi | 84% | 2602 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,530 psi | 80% | 2582 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,327 psi | 79% | 2536 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 43,685 psi | 72% | 2497 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 35,911 psi | 59% | 2359 fps | 96.4% |
| Lovex S070 | <<locked>> | 82% | 36,361 psi | 60% | 2388 fps | 95.4% |
| Lovex S071 | <<locked>> | 96% | 33,634 psi | 55% | 2375 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 47,747 psi | 78% | 2552 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,153 psi | 79% | 2552 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,787 psi | 72% | 2539 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 44,643 psi | 73% | 2585 fps | 95.5% |
| Norma MRP | <<locked>> | 92% | 37,159 psi | 61% | 2536 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 32,445 psi | 53% | 2352 fps | 96.7% |
| Ramshot Big Game | <<locked>> | 80% | 43,555 psi | 72% | 2559 fps | 99.8% |
| Ramshot Grand | <<locked>> | 98% | 48,283 psi | 79% | 2713 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 82% | 33,620 psi | 55% | 2388 fps | 95.1% |
| Ramshot Magnum | <<locked>> | 98% | 41,655 psi | 68% | 2575 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 50,821 psi | 83% | 2625 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,575 psi | 83% | 2638 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,325 psi | 45% | 1499 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,148 psi | 69% | 2487 fps | 97.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,340 psi | 78% | 2657 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,159 psi | 63% | 2536 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,821 psi | 52% | 2365 fps | 96.2% |
| ReloadSwiss RS 70 | 62.2 gr | 80% | 31,633 psi | 52% | 2365 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 45,527 psi | 75% | 2510 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,015 psi | 64% | 2448 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 96% | 48,675 psi | 80% | 2621 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 94% | 42,134 psi | 69% | 2566 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 82% | 39,305 psi | 65% | 2421 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,911 psi | 59% | 2359 fps | 96.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,530 psi | 80% | 2582 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,685 psi | 72% | 2497 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 36,361 psi | 60% | 2388 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,914 psi | 66% | 2497 fps | 99.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,255 psi | 81% | 2602 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,268 psi | 78% | 2575 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,863 psi | 80% | 2493 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,973 psi | 67% | 2372 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 37,507 psi | 62% | 2356 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 41,742 psi | 69% | 2562 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 48,501 psi | 80% | 2493 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,950 psi | 80% | 2592 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 39,581 psi | 65% | 2448 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 29,080 psi | 48% | 2310 fps | 98.7% |
| Somchem S385 | <<locked>> | 92% | 40,147 psi | 66% | 2500 fps | 95.7% |
| Unknown powder | <<locked>> | 80% | 35,070 psi | 58% | 2402 fps | 96.9% |
| Vihtavuori N133 | <<locked>> | 80% | 49,327 psi | 81% | 2480 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,310 psi | 74% | 2477 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,803 psi | 75% | 2493 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,782 psi | 62% | 2385 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 33,721 psi | 55% | 2352 fps | 97% |
| Vihtavuori N165 | <<locked>> | 98% | 41,974 psi | 69% | 2523 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 51,024 psi | 84% | 2598 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,121 psi | 72% | 2490 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,286 psi | 55% | 2356 fps | 96.7% |
| Vihtavuori N555 | <<locked>> | 82% | 26,760 psi | 44% | 2254 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,214 psi | 55% | 2326 fps | 98.8% |
| Winchester 760 | <<locked>> | 80% | 37,289 psi | 61% | 2464 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 86% | 24,831 psi | 41% | 2251 fps | 95.2% |
| Winchester Supreme 780 | <<locked>> | 94% | 43,772 psi | 72% | 2559 fps | 95.4% |
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 102 powders for .338 Blaser Mag. loaded with the .338 | 230gr | Nosler CT FailSafe. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,818 fps; across all powders the maximum-charge window runs from 1,637 fps to 2,818 fps. Accurate 3100 gives the best case fill at 100 %, and 102 of the 102 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 230.0 gr projectile in 0.338" calls for a 1:14.5 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 70, Alliant Reloder-16, Hodgdon Superformance rank at the top here: for .338 Blaser Mag. with the .338 | 230gr | Nosler CT FailSafe 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.