Load Specifications
Bullet Manufacturer:Lehigh Defense
Bullet Weight:230 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:8.5 mm Messner Mag. load data
Case Length (l3):2.508"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:106 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:25.6"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:11.5
Load data in caliber 8.5 mm Messner Mag. with .338 | 230gr | Lehigh Defense Match Solid 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-26 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>> | 82% | 54,085 psi | 85% | 2657 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,811 psi | 87% | 2740 fps | 99.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,200 psi | 83% | 2782 fps | 99.9% |
| Accurate 4064 | <<locked>> | 84% | 54,708 psi | 86% | 2717 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,738 psi | 87% | 2831 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 55,709 psi | 87% | 2933 fps | 97.3% |
| ADI AR 2206H | <<locked>> | 82% | 57,435 psi | 90% | 2795 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 55,143 psi | 86% | 2753 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 56,826 psi | 89% | 2881 fps | 99.1% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,346 psi | 85% | 2877 fps | 97.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,549 psi | 85% | 2877 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 57,014 psi | 89% | 2877 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,970 psi | 88% | 2776 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,188 psi | 88% | 2799 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 56,681 psi | 89% | 2887 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,143 psi | 85% | 2854 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,144 psi | 88% | 2871 fps | 99.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,171 psi | 83% | 2871 fps | 98.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,183 psi | 79% | 2802 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,627 psi | 68% | 2736 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 98% | 53,824 psi | 84% | 2940 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 57,580 psi | 90% | 2818 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,689 psi | 76% | 2795 fps | 98.1% |
| Bofors RP3 | <<locked>> | 86% | 56,608 psi | 89% | 2789 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,171 psi | 83% | 2871 fps | 98.9% |
| Bofors RP7 | <<locked>> | 90% | 56,072 psi | 88% | 2785 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 43,308 psi | 68% | 2671 fps | 96% |
| Hodgdon H380 | <<locked>> | 86% | 57,130 psi | 90% | 2812 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 54,244 psi | 85% | 2831 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 88% | 54,215 psi | 85% | 2792 fps | 99% |
| Hodgdon H4831 | <<locked>> | 98% | 54,650 psi | 86% | 2822 fps | 97.3% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 57,130 psi | 90% | 2858 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 56,927 psi | 89% | 2808 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,955 psi | 86% | 2792 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 42,699 psi | 67% | 2769 fps | 97.5% |
| Hodgdon Superformance | <<locked>> | 90% | 54,592 psi | 86% | 2871 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,303 psi | 57% | 1706 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,666 psi | 87% | 2756 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,636 psi | 86% | 2736 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 57,406 psi | 90% | 2776 fps | 99.8% |
| IMR 4350 | <<locked>> | 94% | 57,159 psi | 90% | 2818 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,346 psi | 85% | 2759 fps | 99.6% |
| IMR 4831 | <<locked>> | 94% | 56,086 psi | 88% | 2822 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 57,682 psi | 90% | 2825 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 56,188 psi | 88% | 2808 fps | 97.7% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 51,808 psi | 81% | 2848 fps | 97.5% |
| Lovex S060 | <<locked>> | 82% | 56,318 psi | 88% | 2720 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,781 psi | 86% | 2726 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,433 psi | 85% | 2756 fps | 100% |
| Lovex S070 | <<locked>> | 92% | 55,535 psi | 87% | 2795 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,106 psi | 69% | 2638 fps | 99.1% |
| Norma 201 | <<locked>> | 82% | 55,912 psi | 88% | 2736 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,826 psi | 89% | 2730 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,463 psi | 87% | 2785 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,433 psi | 85% | 2822 fps | 98.7% |
| Norma MRPᴾ | <<locked>> | 100% | 56,797 psi | 89% | 2956 fps | 99.9% |
| Norma URP | <<locked>> | 92% | 54,389 psi | 85% | 2815 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 56,449 psi | 88% | 2812 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,011 psi | 82% | 2864 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 94% | 56,985 psi | 89% | 2874 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,383 psi | 73% | 2743 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,043 psi | 58% | 1749 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 57,029 psi | 89% | 2799 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 57,290 psi | 90% | 2864 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 57,638 psi | 90% | 2897 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 55,521 psi | 87% | 2854 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,244 psi | 85% | 2887 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,496 psi | 67% | 2762 fps | 98.4% |
| Rottweil R 902 | <<locked>> | 84% | 56,739 psi | 89% | 2740 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 56,681 psi | 89% | 2785 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,013 psi | 86% | 2799 fps | 98% |
| Rottweil R 905 | <<locked>> | 98% | 55,201 psi | 87% | 2854 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 90% | 56,072 psi | 88% | 2785 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,433 psi | 85% | 2756 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 54,781 psi | 86% | 2726 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,535 psi | 87% | 2795 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,911 psi | 86% | 2799 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,825 psi | 87% | 2769 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,927 psi | 89% | 2664 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,549 psi | 85% | 2628 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 57,551 psi | 90% | 2759 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,723 psi | 86% | 2848 fps | 99% |
| Somchem S335 | <<locked>> | 82% | 56,463 psi | 88% | 2661 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,637 psi | 89% | 2782 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 56,623 psi | 89% | 2792 fps | 97.5% |
| Somchem S365 | <<locked>> | 96% | 57,580 psi | 90% | 2864 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,912 psi | 88% | 2828 fps | 99.5% |
| Vihtavuori N133 | <<locked>> | 82% | 57,508 psi | 90% | 2644 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 57,217 psi | 90% | 2690 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 57,450 psi | 90% | 2710 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,505 psi | 85% | 2710 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 56,753 psi | 89% | 2812 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,517 psi | 81% | 2749 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 84% | 55,521 psi | 87% | 2710 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,608 psi | 87% | 2815 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 56,188 psi | 88% | 2874 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 57,116 psi | 90% | 2949 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 56,376 psi | 88% | 2776 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,476 psi | 85% | 2835 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,324 psi | 71% | 2864 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,014 psi | 88% | 2776 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,101 psi | 88% | 2825 fps | 99% |
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% | 50,705 psi | 79% | 2615 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,863 psi | 77% | 2635 fps | 98.5% |
| Accurate 3100 | <<locked>> | 84% | 30,560 psi | 48% | 2352 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 48,066 psi | 75% | 2625 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,506 psi | 57% | 2503 fps | 98.8% |
| Accurate MAGPRO | <<locked>> | 96% | 48,095 psi | 75% | 2805 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 53,824 psi | 84% | 2743 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,832 psi | 72% | 2608 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 38,305 psi | 60% | 2546 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 94% | 44,469 psi | 70% | 2700 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,734 psi | 80% | 2822 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 38,421 psi | 60% | 2549 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,267 psi | 73% | 2631 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,298 psi | 77% | 2694 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,940 psi | 56% | 2520 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,727 psi | 64% | 2638 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 38,014 psi | 60% | 2543 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 90% | 37,956 psi | 59% | 2589 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,063 psi | 41% | 2280 fps | 97% |
| Alliant Reloder-25 | <<locked>> | 88% | 29,602 psi | 46% | 2395 fps | 95.3% |
| Alliant Reloder-26 | 71.8 gr | 80% | 27,731 psi | 43% | 2385 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 53,795 psi | 84% | 2766 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 40,030 psi | 63% | 2631 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 46,383 psi | 73% | 2641 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 37,956 psi | 59% | 2589 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 40,814 psi | 64% | 2520 fps | 97.1% |
| Hodgdon H1000 | <<locked>> | 98% | 40,582 psi | 64% | 2612 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 46,804 psi | 73% | 2654 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 38,783 psi | 61% | 2556 fps | 97.2% |
| Hodgdon H4350 | <<locked>> | 80% | 41,843 psi | 66% | 2575 fps | 96.7% |
| Hodgdon H4831 | <<locked>> | 94% | 47,630 psi | 75% | 2707 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 94% | 46,688 psi | 73% | 2690 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,417 psi | 52% | 2415 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,227 psi | 80% | 2740 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 37,376 psi | 59% | 2641 fps | 95.4% |
| Hodgdon Superformance | 74 gr | 80% | 37,681 psi | 59% | 2566 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,108 psi | 42% | 1526 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,156 psi | 82% | 2707 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,225 psi | 76% | 2638 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,488 psi | 79% | 2671 fps | 99.2% |
| IMR 4350 | <<locked>> | 80% | 36,622 psi | 57% | 2454 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,308 psi | 66% | 2549 fps | 97.8% |
| IMR 4831 | <<locked>> | 80% | 35,259 psi | 55% | 2461 fps | 98.6% |
| IMR 4895 | <<locked>> | 80% | 50,604 psi | 79% | 2723 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 46,456 psi | 73% | 2651 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 94% | 42,380 psi | 66% | 2674 fps | 95% |
| Lovex S060 | <<locked>> | 80% | 52,808 psi | 83% | 2671 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,240 psi | 76% | 2631 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,769 psi | 62% | 2503 fps | 98.5% |
| Lovex S070 | <<locked>> | 80% | 37,927 psi | 59% | 2484 fps | 97.1% |
| Lovex S071 | <<locked>> | 90% | 31,734 psi | 50% | 2382 fps | 95.9% |
| Norma 201 | <<locked>> | 80% | 52,562 psi | 82% | 2687 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,447 psi | 84% | 2687 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,631 psi | 76% | 2684 fps | 100% |
| Norma 204 | <<locked>> | 82% | 38,450 psi | 60% | 2530 fps | 95% |
| Norma MRP | <<locked>> | 86% | 34,664 psi | 54% | 2539 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 36,550 psi | 57% | 2500 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 80% | 49,139 psi | 77% | 2707 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 42,032 psi | 66% | 2677 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 35,433 psi | 56% | 2490 fps | 97% |
| Ramshot Magnum | <<locked>> | 94% | 37,130 psi | 58% | 2556 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,528 psi | 43% | 1562 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,847 psi | 73% | 2638 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 53,505 psi | 84% | 2812 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,352 psi | 68% | 2687 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,361 psi | 57% | 2523 fps | 98.6% |
| ReloadSwiss RS 70 | 71.1 gr | 80% | 35,491 psi | 56% | 2533 fps | 98.1% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 34,316 psi | 54% | 2562 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 50,140 psi | 79% | 2644 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,569 psi | 68% | 2589 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 42,453 psi | 67% | 2582 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 86% | 36,854 psi | 58% | 2520 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 40,814 psi | 64% | 2520 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,769 psi | 62% | 2503 fps | 98.5% |
| Shooters World Precision | <<locked>> | 80% | 48,240 psi | 76% | 2631 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,927 psi | 59% | 2484 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,904 psi | 70% | 2644 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,373 psi | 82% | 2720 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,447 psi | 84% | 2618 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,136 psi | 71% | 2493 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,914 psi | 61% | 2448 fps | 97.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 39,160 psi | 61% | 2572 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 53,185 psi | 83% | 2618 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,005 psi | 69% | 2589 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 46,354 psi | 73% | 2628 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 33,025 psi | 52% | 2461 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 34,969 psi | 55% | 2451 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 54,056 psi | 85% | 2602 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,343 psi | 79% | 2605 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,575 psi | 79% | 2621 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,989 psi | 66% | 2520 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,942 psi | 59% | 2500 fps | 99% |
| Vihtavuori N165 | <<locked>> | 90% | 36,912 psi | 58% | 2487 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 48,863 psi | 77% | 2618 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,420 psi | 59% | 2503 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 80% | 28,572 psi | 45% | 2349 fps | 97% |
| Vihtavuori N560 | <<locked>> | 94% | 46,253 psi | 72% | 2766 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,115 psi | 58% | 2470 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 38,943 psi | 61% | 2556 fps | 97.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 22,814 psi | 36% | 2244 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,504 psi | 82% | 2726 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 39,465 psi | 62% | 2543 fps | 95.6% |
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 8.5 mm Messner Mag. loaded with the .338 | 230gr | Lehigh Defense Match Solid. Norma MRP delivers the highest muzzle velocity at 2,956 fps; across all powders the maximum-charge window runs from 1,706 fps to 2,956 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 (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 230.0 gr projectile in 0.338" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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-26, Hodgdon Superformance rank at the top here: for 8.5 mm Messner Mag. with the .338 | 230gr | Lehigh Defense Match Solid 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.