Load Specifications
Bullet:.338 | 185gr | Barnes MRX BT
Bullet Manufacturer:Barnes
Bullet Weight:185 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:8.5 x 68 Fanzoj load data
Case Length (l3):2.65"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:92 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:25.6"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:13.0
Load data in caliber 8.5 x 68 Fanzoj with .338 | 185gr | Barnes MRX BT bullet and 105 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 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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 88% | 55,927 psi | 88% | 2887 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 54,302 psi | 85% | 2913 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 57,014 psi | 89% | 2949 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 56,289 psi | 88% | 2979 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 54,186 psi | 85% | 2894 fps | 95.8% |
| Accurate 4064 | <<locked>> | 96% | 56,753 psi | 89% | 2995 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,255 psi | 77% | 2956 fps | 98.5% |
| Accurate LT-30 | <<locked>> | 82% | 55,288 psi | 87% | 2831 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,695 psi | 87% | 2858 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,129 psi | 86% | 2989 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 96% | 56,173 psi | 88% | 2982 fps | 99.5% |
| ADI AR 2219 | <<locked>> | 82% | 56,333 psi | 88% | 2956 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 54,215 psi | 85% | 2940 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 54,491 psi | 85% | 2920 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 56,086 psi | 88% | 3054 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,868 psi | 86% | 3107 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,637 psi | 87% | 3005 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 55,579 psi | 87% | 2894 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 56,478 psi | 89% | 3028 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,457 psi | 76% | 2966 fps | 98.6% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 56,507 psi | 89% | 3127 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,026 psi | 53% | 2671 fps | 96% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,563 psi | 86% | 2828 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 54,984 psi | 86% | 3002 fps | 99.3% |
| Bofors RP3 | <<locked>> | 96% | 56,144 psi | 88% | 3022 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 56,797 psi | 89% | 2982 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,391 psi | 88% | 2927 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 57,029 psi | 89% | 3022 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 55,317 psi | 87% | 3071 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 84% | 55,042 psi | 86% | 2940 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 56,159 psi | 88% | 2966 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 57,551 psi | 90% | 3031 fps | 99.1% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 52,953 psi | 83% | 3015 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 90% | 55,637 psi | 87% | 2999 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,440 psi | 70% | 2838 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,723 psi | 86% | 3028 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 54,302 psi | 85% | 3051 fps | 96.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,766 psi | 54% | 1801 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 57,159 psi | 90% | 3002 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 55,129 psi | 86% | 2982 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,651 psi | 87% | 2966 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 92% | 56,217 psi | 88% | 2946 fps | 97.1% |
| IMR 4198 | <<locked>> | 84% | 56,028 psi | 88% | 2854 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 55,405 psi | 87% | 2963 fps | 96.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,876 psi | 73% | 2897 fps | 98.1% |
| IMR 4895 | <<locked>> | 92% | 54,172 psi | 85% | 3005 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 88% | 54,215 psi | 85% | 2940 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 54,288 psi | 85% | 2923 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 54,418 psi | 85% | 2963 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,085 psi | 86% | 2913 fps | 99.7% |
| Lovex S062 | <<locked>> | 94% | 54,926 psi | 86% | 2959 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,041 psi | 85% | 2949 fps | 98% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,430 psi | 81% | 2927 fps | 96.5% |
| Norma 201 | <<locked>> | 92% | 57,145 psi | 90% | 2982 fps | 100% |
| Norma 202 | <<locked>> | 92% | 57,624 psi | 90% | 2982 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,564 psi | 87% | 3015 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 48,994 psi | 77% | 2949 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 94% | 56,304 psi | 88% | 3041 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,124 psi | 75% | 2940 fps | 96.5% |
| Ramshot TAC | <<locked>> | 88% | 54,868 psi | 86% | 2956 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 88% | 54,157 psi | 85% | 2976 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,579 psi | 87% | 2943 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,128 psi | 55% | 1844 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 57,508 psi | 90% | 2976 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 54,549 psi | 85% | 2956 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 56,840 psi | 89% | 3097 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 56,391 psi | 88% | 3133 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 48,965 psi | 77% | 2979 fps | 98.2% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,922 psi | 78% | 3005 fps | 97.9% |
| Rottweil R 901 | <<locked>> | 90% | 57,711 psi | 90% | 2959 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 57,406 psi | 90% | 2976 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 55,724 psi | 87% | 3005 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 56,797 psi | 89% | 2982 fps | 96.6% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,041 psi | 85% | 2949 fps | 98% |
| Shooters World Match Rifle | <<locked>> | 90% | 54,418 psi | 85% | 2963 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 54,926 psi | 86% | 2959 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 51,430 psi | 81% | 2927 fps | 96.5% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 57,435 psi | 90% | 2946 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 56,782 psi | 89% | 2969 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 54,346 psi | 85% | 3022 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 56,898 psi | 89% | 2920 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 56,623 psi | 89% | 2986 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 57,203 psi | 90% | 3012 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,883 psi | 88% | 2877 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,796 psi | 87% | 2871 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 54,969 psi | 86% | 2907 fps | 96.8% |
| Somchem S321 | <<locked>> | 86% | 55,535 psi | 87% | 2976 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 54,839 psi | 86% | 2871 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 56,144 psi | 88% | 2976 fps | 99.8% |
| Somchem S355 | <<locked>> | 98% | 56,231 psi | 88% | 3005 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,555 psi | 68% | 2897 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 86% | 55,477 psi | 87% | 2838 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,970 psi | 88% | 2861 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 56,971 psi | 89% | 2940 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 54,766 psi | 86% | 2913 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 54,433 psi | 85% | 2933 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,692 psi | 81% | 2953 fps | 98.6% |
| Vihtavuori N530 | <<locked>> | 88% | 54,781 psi | 86% | 2940 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 56,376 psi | 88% | 2959 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,749 psi | 80% | 2956 fps | 98.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,289 psi | 57% | 2753 fps | 96.1% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,794 psi | 83% | 2936 fps | 99.9% |
| Winchester 748 | <<locked>> | 88% | 54,346 psi | 85% | 2989 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 53,185 psi | 83% | 3018 fps | 96.8% |
| Winchester StaBALL Match | <<locked>> | 92% | 56,913 psi | 89% | 3018 fps | 100% |
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 2015 | <<locked>> | 80% | 43,439 psi | 68% | 2700 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,442 psi | 74% | 2808 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,462 psi | 56% | 2598 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 42,511 psi | 67% | 2756 fps | 99.9% |
| Accurate 2700 | <<locked>> | 90% | 50,647 psi | 79% | 2838 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 33,562 psi | 53% | 2585 fps | 99.4% |
| Accurate 4350 | <<locked>> | 92% | 36,883 psi | 58% | 2717 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 51,909 psi | 81% | 2782 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,301 psi | 82% | 2808 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,001 psi | 63% | 2713 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 82% | 36,260 psi | 57% | 2608 fps | 95.8% |
| ADI AR 2219 | <<locked>> | 80% | 52,794 psi | 83% | 2907 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,076 psi | 66% | 2726 fps | 99% |
| Alliant AR-Comp | <<locked>> | 80% | 41,452 psi | 65% | 2726 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,965 psi | 77% | 2936 fps | 99.5% |
| Alliant Power Pro 2000-MR | 61.4 gr | 80% | 36,013 psi | 56% | 2717 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,054 psi | 52% | 2569 fps | 96.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,110 psi | 77% | 2799 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,781 psi | 56% | 2638 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 92% | 37,768 psi | 59% | 2736 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 84% | 32,692 psi | 51% | 2635 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 98% | 31,966 psi | 50% | 2615 fps | 95% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,271 psi | 80% | 2779 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,059 psi | 61% | 2707 fps | 96.2% |
| Bofors RP3 | <<locked>> | 80% | 32,329 psi | 51% | 2566 fps | 96.5% |
| Bofors RP7 | <<locked>> | 96% | 49,835 psi | 78% | 2867 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,048 psi | 69% | 2723 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,277 psi | 63% | 2740 fps | 99.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,527 psi | 70% | 2884 fps | 98.2% |
| Hodgdon H322 | <<locked>> | 80% | 48,095 psi | 75% | 2835 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,907 psi | 77% | 2858 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 38,464 psi | 60% | 2687 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 96% | 46,166 psi | 72% | 2897 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 40,292 psi | 63% | 2723 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 32,285 psi | 51% | 2569 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,100 psi | 57% | 2680 fps | 97.6% |
| Hodgdon Superformance | <<locked>> | 98% | 50,444 psi | 79% | 2986 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,672 psi | 40% | 1608 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,812 psi | 61% | 2677 fps | 97.8% |
| IMR 3031 | <<locked>> | 80% | 39,378 psi | 62% | 2726 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,636 psi | 56% | 2589 fps | 95.9% |
| IMR 4166 Enduron | <<locked>> | 88% | 49,530 psi | 78% | 2835 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 49,705 psi | 78% | 2766 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 49,037 psi | 77% | 2858 fps | 95.5% |
| IMR 4831 | <<locked>> | 92% | 35,839 psi | 56% | 2671 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 36,637 psi | 57% | 2671 fps | 96.8% |
| IMR 8208 XBR | <<locked>> | 80% | 42,076 psi | 66% | 2726 fps | 99% |
| Lovex D073.5 | <<locked>> | 80% | 47,210 psi | 74% | 2815 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 38,348 psi | 60% | 2687 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 40,509 psi | 63% | 2654 fps | 97.8% |
| Lovex S062 | <<locked>> | 80% | 35,215 psi | 55% | 2592 fps | 97.7% |
| Lovex S065 | <<locked>> | 92% | 42,148 psi | 66% | 2736 fps | 95.4% |
| Lovex S070 | <<locked>> | 96% | 45,353 psi | 71% | 2818 fps | 95% |
| Norma 201 | <<locked>> | 80% | 38,957 psi | 61% | 2664 fps | 98.5% |
| Norma 202 | <<locked>> | 80% | 39,146 psi | 61% | 2677 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 35,186 psi | 55% | 2625 fps | 96.3% |
| Norma URP | <<locked>> | 92% | 37,579 psi | 59% | 2723 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 34,577 psi | 54% | 2631 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 98% | 45,237 psi | 71% | 2884 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 41,989 psi | 66% | 2723 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,162 psi | 65% | 2743 fps | 97.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,643 psi | 72% | 2776 fps | 98.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,933 psi | 41% | 1647 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,253 psi | 74% | 2818 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 44,701 psi | 70% | 2785 fps | 95.3% |
| ReloadSwiss RS 52 | 59.6 gr | 80% | 37,159 psi | 58% | 2733 fps | 96.3% |
| ReloadSwiss RS 60 | 60.5 gr | 80% | 30,472 psi | 48% | 2585 fps | 97.2% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 37,043 psi | 58% | 2736 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 40,567 psi | 64% | 2812 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 42,641 psi | 67% | 2717 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 37,014 psi | 58% | 2612 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 80% | 30,429 psi | 48% | 2507 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 96% | 49,835 psi | 78% | 2867 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 92% | 42,148 psi | 66% | 2736 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,348 psi | 60% | 2687 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 35,215 psi | 55% | 2592 fps | 97.7% |
| Shooters World SW4350 | <<locked>> | 96% | 45,353 psi | 71% | 2818 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 49,937 psi | 78% | 2835 fps | 99.7% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 52,939 psi | 83% | 2917 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 33,837 psi | 53% | 2618 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 49,980 psi | 78% | 2822 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,943 psi | 63% | 2690 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,580 psi | 60% | 2677 fps | 97.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,625 psi | 64% | 2628 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,431 psi | 52% | 2487 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 47,964 psi | 75% | 2792 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 45,324 psi | 71% | 2808 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 40,132 psi | 63% | 2631 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,769 psi | 62% | 2694 fps | 97.5% |
| Somchem S355 | <<locked>> | 80% | 31,444 psi | 49% | 2520 fps | 95.4% |
| Somchem S365 | <<locked>> | 88% | 29,312 psi | 46% | 2549 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 46,108 psi | 72% | 2703 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,886 psi | 64% | 2628 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,143 psi | 57% | 2605 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,202 psi | 58% | 2615 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 29,950 psi | 47% | 2461 fps | 96.5% |
| Vihtavuori N160 | <<locked>> | 90% | 37,028 psi | 58% | 2671 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 41,989 psi | 66% | 2720 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 80% | 35,636 psi | 56% | 2598 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 92% | 38,783 psi | 61% | 2730 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 98% | 34,011 psi | 53% | 2694 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 32,793 psi | 51% | 2539 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 41,249 psi | 65% | 2762 fps | 99.5% |
| Winchester 760 | <<locked>> | 96% | 46,369 psi | 73% | 2900 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,753 psi | 59% | 2677 fps | 97.7% |
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 112 powders for 8.5 x 68 Fanzoj loaded with the .338 | 185gr | Barnes MRX BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,133 fps; across all powders the maximum-charge window runs from 1,801 fps to 3,133 fps. Accurate 3100 gives the best case fill at 100 %, and 112 of the 112 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 47–90 %, leaving at least 10 % headroom. The 185.0 gr projectile in 0.338" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, Alliant Reloder-16 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, ReloadSwiss RS 52 rank at the top here: for 8.5 x 68 Fanzoj with the .338 | 185gr | Barnes MRX BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, Alliant Reloder-26, Norma 204 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.