Load Specifications
Bullet Manufacturer:Nosler
Bullet Weight:225 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:1:15.5
Load data in caliber .338 Blaser Mag. with .338 | 225gr | Nosler Partition 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% | 52,228 psi | 86% | 2618 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,071 psi | 90% | 2680 fps | 98.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,253 psi | 76% | 2651 fps | 98.6% |
| Accurate 4064 | <<locked>> | 86% | 52,330 psi | 86% | 2664 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 52,185 psi | 86% | 2759 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 51,982 psi | 85% | 2690 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 53,200 psi | 87% | 2697 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,534 psi | 88% | 2792 fps | 97.6% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,186 psi | 89% | 2687 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 51,590 psi | 85% | 2808 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 53,374 psi | 88% | 2717 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 53,824 psi | 88% | 2740 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 53,185 psi | 87% | 2812 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,215 psi | 89% | 2841 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,721 psi | 87% | 2782 fps | 97.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,296 psi | 76% | 2723 fps | 96.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,497 psi | 71% | 2671 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,261 psi | 63% | 2582 fps | 97.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,095 psi | 81% | 2844 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 51,721 psi | 85% | 2707 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 53,998 psi | 89% | 2733 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,296 psi | 76% | 2723 fps | 96.3% |
| Bofors RP7 | <<locked>> | 92% | 53,824 psi | 88% | 2710 fps | 98.5% |
| Hodgdon BL-C2 | <<locked>> | 82% | 53,809 psi | 88% | 2720 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,665 psi | 90% | 2746 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 52,605 psi | 86% | 2776 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 94% | 53,388 psi | 88% | 2743 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 82% | 52,576 psi | 86% | 2700 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 53,258 psi | 87% | 2736 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 52,431 psi | 86% | 2736 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 54,955 psi | 90% | 2844 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,926 psi | 59% | 1663 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 52,736 psi | 87% | 2690 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 54,926 psi | 90% | 2707 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 52,127 psi | 86% | 2671 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 54,563 psi | 90% | 2697 fps | 98.9% |
| IMR 4350 | <<locked>> | 96% | 54,360 psi | 89% | 2743 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 52,373 psi | 86% | 2690 fps | 98.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 53,417 psi | 88% | 2759 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 51,779 psi | 85% | 2717 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 53,258 psi | 87% | 2723 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 82% | 54,186 psi | 89% | 2687 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 52,011 psi | 85% | 2667 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,607 psi | 90% | 2667 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 52,721 psi | 87% | 2674 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 52,040 psi | 85% | 2687 fps | 99.4% |
| Lovex S070 | <<locked>> | 94% | 52,968 psi | 87% | 2723 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,319 psi | 63% | 2507 fps | 96.8% |
| Norma 201 | <<locked>> | 84% | 54,302 psi | 89% | 2687 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,810 psi | 90% | 2684 fps | 100% |
| Norma 203B | <<locked>> | 86% | 53,069 psi | 87% | 2726 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,897 psi | 90% | 2792 fps | 97.7% |
| Norma MRPᴾ | <<locked>> | 100% | 48,791 psi | 80% | 2802 fps | 98.3% |
| Norma URP | <<locked>> | 96% | 54,665 psi | 90% | 2795 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 53,563 psi | 88% | 2749 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,141 psi | 86% | 2815 fps | 96.3% |
| Ramshot Hunter | <<locked>> | 96% | 53,359 psi | 88% | 2795 fps | 99.4% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,078 psi | 74% | 2674 fps | 96.5% |
| Ramshot TAC | <<locked>> | 82% | 54,288 psi | 89% | 2713 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,143 psi | 89% | 2726 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,521 psi | 60% | 1703 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,737 psi | 90% | 2730 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,534 psi | 90% | 2805 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,027 psi | 89% | 2835 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 51,721 psi | 85% | 2779 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,418 psi | 89% | 2861 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,752 psi | 90% | 2684 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 54,085 psi | 89% | 2726 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 51,967 psi | 85% | 2710 fps | 96.1% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,561 psi | 85% | 2766 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 92% | 53,824 psi | 88% | 2710 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 52,040 psi | 85% | 2687 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 52,011 psi | 85% | 2667 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 52,721 psi | 87% | 2674 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 52,968 psi | 87% | 2723 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 52,025 psi | 85% | 2733 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 52,997 psi | 87% | 2694 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 53,911 psi | 89% | 2713 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 52,083 psi | 86% | 2575 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 52,489 psi | 86% | 2575 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 51,779 psi | 85% | 2638 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,068 psi | 84% | 2759 fps | 97.4% |
| Somchem S335 | <<locked>> | 84% | 54,998 psi | 90% | 2618 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 52,678 psi | 86% | 2684 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,128 psi | 89% | 2723 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 53,156 psi | 87% | 2795 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,373 psi | 86% | 2746 fps | 98.3% |
| Unknown powder | <<locked>> | 92% | 52,127 psi | 86% | 2749 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 82% | 52,518 psi | 86% | 2559 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,737 psi | 90% | 2644 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 51,909 psi | 85% | 2618 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 52,170 psi | 86% | 2654 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 53,563 psi | 88% | 2740 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,136 psi | 74% | 2612 fps | 96.4% |
| Vihtavuori N530 | <<locked>> | 82% | 54,679 psi | 90% | 2687 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 53,476 psi | 88% | 2661 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 52,518 psi | 86% | 2746 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,501 psi | 80% | 2746 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 53,200 psi | 87% | 2713 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 52,605 psi | 86% | 2776 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,131 psi | 64% | 2710 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,534 psi | 90% | 2766 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% | 45,759 psi | 75% | 2526 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 39,813 psi | 65% | 2421 fps | 95.1% |
| Accurate 3100 | <<locked>> | 92% | 35,157 psi | 58% | 2441 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 43,265 psi | 71% | 2530 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,213 psi | 53% | 2382 fps | 96.6% |
| ADI AR 2206H | <<locked>> | 80% | 48,805 psi | 80% | 2641 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 41,626 psi | 68% | 2503 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 94% | 44,222 psi | 73% | 2628 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,908 psi | 84% | 2641 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,918 psi | 74% | 2694 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,669 psi | 68% | 2526 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,440 psi | 73% | 2589 fps | 99.7% |
| Alliant Reloder-16 | 58.1 gr | 80% | 32,329 psi | 53% | 2398 fps | 96.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,143 psi | 59% | 2516 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 94% | 43,555 psi | 72% | 2625 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 98% | 43,381 psi | 71% | 2667 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 84% | 26,600 psi | 44% | 2267 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 96% | 33,924 psi | 56% | 2477 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 88% | 32,227 psi | 53% | 2484 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,385 psi | 79% | 2654 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 41,539 psi | 68% | 2533 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 43,381 psi | 71% | 2667 fps | 95.5% |
| Bofors RP7 | <<locked>> | 82% | 39,508 psi | 65% | 2457 fps | 95.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,285 psi | 83% | 2667 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,076 psi | 69% | 2539 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 80% | 37,391 psi | 61% | 2497 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 86% | 41,626 psi | 68% | 2536 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 49,342 psi | 81% | 2651 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,762 psi | 49% | 2300 fps | 97.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,989 psi | 71% | 2589 fps | 100% |
| Hodgdon Superformance | 69.4 gr | 84% | 38,508 psi | 63% | 2546 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,847 psi | 44% | 1486 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,888 psi | 72% | 2546 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 45,672 psi | 75% | 2575 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,785 psi | 67% | 2477 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 40,379 psi | 66% | 2448 fps | 96.2% |
| IMR 4350 | <<locked>> | 86% | 39,856 psi | 65% | 2490 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,493 psi | 63% | 2438 fps | 95.5% |
| IMR 4831 | <<locked>> | 80% | 28,427 psi | 47% | 2270 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 45,571 psi | 75% | 2615 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 98% | 50,241 psi | 82% | 2674 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 50,908 psi | 84% | 2641 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,718 psi | 80% | 2618 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,399 psi | 79% | 2572 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 43,758 psi | 72% | 2533 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 35,984 psi | 59% | 2388 fps | 96.3% |
| Lovex S070 | <<locked>> | 82% | 36,521 psi | 60% | 2421 fps | 95.3% |
| Lovex S071 | <<locked>> | 96% | 33,736 psi | 55% | 2408 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 47,805 psi | 78% | 2589 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,414 psi | 79% | 2592 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,830 psi | 72% | 2575 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 44,918 psi | 74% | 2625 fps | 95.5% |
| Norma MRP | <<locked>> | 92% | 37,318 psi | 61% | 2572 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 32,503 psi | 53% | 2385 fps | 96.6% |
| Ramshot Big Game | <<locked>> | 80% | 43,642 psi | 72% | 2592 fps | 99.7% |
| Ramshot Grand | <<locked>> | 98% | 48,457 psi | 80% | 2749 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 82% | 33,707 psi | 55% | 2421 fps | 95% |
| Ramshot Magnum | <<locked>> | 98% | 41,887 psi | 69% | 2612 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 50,879 psi | 84% | 2661 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,691 psi | 83% | 2677 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,282 psi | 45% | 1522 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,279 psi | 69% | 2520 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,529 psi | 78% | 2697 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,450 psi | 63% | 2575 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,952 psi | 52% | 2398 fps | 96.1% |
| ReloadSwiss RS 70 | 63.5 gr | 80% | 31,676 psi | 52% | 2398 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 45,629 psi | 75% | 2546 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,117 psi | 64% | 2484 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 96% | 48,921 psi | 80% | 2661 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 94% | 42,192 psi | 69% | 2602 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 82% | 39,508 psi | 65% | 2457 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,984 psi | 59% | 2388 fps | 96.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,718 psi | 80% | 2618 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,758 psi | 72% | 2533 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 36,521 psi | 60% | 2421 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,074 psi | 66% | 2533 fps | 99.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,516 psi | 81% | 2641 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,369 psi | 78% | 2615 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,008 psi | 80% | 2533 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,075 psi | 67% | 2408 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 37,652 psi | 62% | 2388 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 41,829 psi | 69% | 2598 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 48,588 psi | 80% | 2530 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,240 psi | 81% | 2631 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 39,639 psi | 65% | 2480 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 29,138 psi | 48% | 2343 fps | 98.6% |
| Somchem S385 | <<locked>> | 92% | 40,219 psi | 66% | 2533 fps | 95.6% |
| Unknown powder | <<locked>> | 80% | 35,128 psi | 58% | 2434 fps | 96.7% |
| Vihtavuori N133 | <<locked>> | 80% | 49,443 psi | 81% | 2520 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,498 psi | 75% | 2516 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,847 psi | 75% | 2530 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,826 psi | 62% | 2421 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 33,779 psi | 55% | 2382 fps | 96.9% |
| Vihtavuori N165 | <<locked>> | 98% | 42,293 psi | 69% | 2562 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 51,285 psi | 84% | 2638 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,121 psi | 72% | 2523 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,286 psi | 55% | 2385 fps | 96.5% |
| Vihtavuori N555 | <<locked>> | 84% | 28,660 psi | 47% | 2336 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,373 psi | 55% | 2362 fps | 98.7% |
| Winchester 760 | <<locked>> | 80% | 37,391 psi | 61% | 2497 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 86% | 24,947 psi | 41% | 2283 fps | 95.1% |
| Winchester Supreme 780 | <<locked>> | 94% | 44,063 psi | 72% | 2595 fps | 95.3% |
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 | 225gr | Nosler Partition. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,861 fps; across all powders the maximum-charge window runs from 1,663 fps to 2,861 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 225.0 gr projectile in 0.338" calls for a 1:15.5 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 | 225gr | Nosler Partition 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.