Load Specifications
Bullet Manufacturer:Sierra
Bullet Weight:250 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:1:12.5
Load data in caliber 8.5 x 68 Fanzoj with .338 | 250gr | Sierra MatchKing bullet and 108 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Alliant Reloder-17.
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>> | 82% | 56,478 psi | 89% | 2454 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,796 psi | 87% | 2487 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 57,188 psi | 90% | 2549 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 57,609 psi | 90% | 2552 fps | 99.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,035 psi | 72% | 2487 fps | 98.9% |
| Accurate 4064 | <<locked>> | 88% | 55,796 psi | 87% | 2536 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,883 psi | 88% | 2635 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 55,593 psi | 87% | 2566 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,594 psi | 89% | 2569 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,461 psi | 84% | 2621 fps | 98.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,360 psi | 85% | 2513 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,840 psi | 88% | 2480 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,434 psi | 87% | 2684 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 57,014 psi | 89% | 2589 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,348 psi | 90% | 2608 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,681 psi | 89% | 2680 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,215 psi | 85% | 2661 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,533 psi | 82% | 2612 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,064 psi | 72% | 2556 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,482 psi | 68% | 2510 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,203 psi | 60% | 2431 fps | 98% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,008 psi | 77% | 2674 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,172 psi | 86% | 2585 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 42,554 psi | 67% | 2493 fps | 95.9% |
| Bofors RP3 | <<locked>> | 90% | 57,595 psi | 90% | 2602 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,064 psi | 72% | 2556 fps | 97% |
| Bofors RP7 | <<locked>> | 94% | 57,246 psi | 90% | 2589 fps | 99.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,956 psi | 88% | 2493 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,508 psi | 90% | 2589 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,723 psi | 86% | 2575 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 54,723 psi | 86% | 2635 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 92% | 55,027 psi | 86% | 2595 fps | 98.6% |
| Hodgdon H4895 | <<locked>> | 84% | 56,173 psi | 88% | 2572 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 56,768 psi | 89% | 2608 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,941 psi | 88% | 2608 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 54,897 psi | 86% | 2674 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,984 psi | 56% | 1542 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,072 psi | 89% | 2572 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,434 psi | 88% | 2546 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,985 psi | 88% | 2549 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,608 psi | 87% | 2539 fps | 99.3% |
| IMR 4350 | <<locked>> | 96% | 54,273 psi | 85% | 2569 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,680 psi | 87% | 2569 fps | 99.3% |
| IMR 4831 | <<locked>> | 98% | 56,173 psi | 88% | 2625 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 55,201 psi | 87% | 2589 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 53,243 psi | 83% | 2556 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 82% | 54,360 psi | 85% | 2513 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,521 psi | 87% | 2539 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,679 psi | 86% | 2493 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,144 psi | 88% | 2546 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,259 psi | 87% | 2562 fps | 99.9% |
| Lovex S070 | <<locked>> | 96% | 56,449 psi | 88% | 2602 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,348 psi | 60% | 2356 fps | 97.5% |
| Norma 201 | <<locked>> | 84% | 54,259 psi | 85% | 2510 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,795 psi | 86% | 2507 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,579 psi | 89% | 2595 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,824 psi | 86% | 2618 fps | 98.2% |
| Norma MRPᴾ | <<locked>> | 100% | 48,747 psi | 76% | 2635 fps | 98.8% |
| Norma URP | <<locked>> | 96% | 54,752 psi | 86% | 2621 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 57,217 psi | 90% | 2621 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 56,811 psi | 89% | 2671 fps | 99.9% |
| Ramshot TAC | <<locked>> | 82% | 54,418 psi | 85% | 2543 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,143 psi | 85% | 2552 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,680 psi | 57% | 1581 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,810 psi | 86% | 2559 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,404 psi | 85% | 2621 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 57,711 psi | 90% | 2700 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,376 psi | 87% | 2657 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,288 psi | 85% | 2684 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 55,288 psi | 87% | 2487 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,781 psi | 86% | 2510 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 57,711 psi | 90% | 2598 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 55,303 psi | 87% | 2592 fps | 97.3% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,517 psi | 81% | 2598 fps | 98% |
| Rottweil R 907 | <<locked>> | 94% | 57,246 psi | 90% | 2589 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,259 psi | 87% | 2562 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,521 psi | 87% | 2539 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,144 psi | 88% | 2546 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,449 psi | 88% | 2602 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,695 psi | 87% | 2612 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,826 psi | 89% | 2572 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,537 psi | 90% | 2589 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,622 psi | 87% | 2448 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,854 psi | 88% | 2448 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,201 psi | 87% | 2520 fps | 99.3% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,024 psi | 80% | 2592 fps | 97.9% |
| Somchem S335 | <<locked>> | 84% | 54,955 psi | 86% | 2444 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,231 psi | 88% | 2556 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 57,740 psi | 90% | 2595 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 57,392 psi | 90% | 2592 fps | 96.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 56,608 psi | 89% | 2661 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,112 psi | 82% | 2575 fps | 98.7% |
| Vihtavuori N133 | <<locked>> | 84% | 56,014 psi | 88% | 2431 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,839 psi | 86% | 2470 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,390 psi | 87% | 2490 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,666 psi | 87% | 2526 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,159 psi | 90% | 2615 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,005 psi | 71% | 2454 fps | 97% |
| Vihtavuori N530 | <<locked>> | 82% | 54,708 psi | 86% | 2513 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 56,927 psi | 89% | 2533 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,028 psi | 88% | 2621 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,530 psi | 76% | 2579 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 56,985 psi | 89% | 2589 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,984 psi | 86% | 2559 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 54,723 psi | 86% | 2635 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,986 psi | 61% | 2549 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 57,377 psi | 90% | 2592 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,008 psi | 77% | 2520 fps | 97.2% |
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% | 53,171 psi | 83% | 2415 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,064 psi | 72% | 2362 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,301 psi | 84% | 2503 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,469 psi | 70% | 2359 fps | 97% |
| Accurate 3100 | <<locked>> | 90% | 32,924 psi | 52% | 2247 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 43,613 psi | 68% | 2369 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,314 psi | 51% | 2241 fps | 97.4% |
| ADI AR 2206H | <<locked>> | 80% | 48,936 psi | 77% | 2474 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 41,626 psi | 65% | 2343 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 92% | 41,524 psi | 65% | 2418 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,010 psi | 80% | 2467 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,417 psi | 82% | 2441 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,005 psi | 71% | 2526 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,829 psi | 66% | 2369 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,541 psi | 70% | 2425 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,372 psi | 51% | 2251 fps | 97.5% |
| Alliant Reloder-17 | 57.3 gr | 80% | 36,114 psi | 57% | 2362 fps | 99.6% |
| Alliant Reloder-19 | <<locked>> | 92% | 40,857 psi | 64% | 2415 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 40,625 psi | 64% | 2457 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 82% | 25,048 psi | 39% | 2087 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 94% | 31,952 psi | 50% | 2283 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 86% | 30,081 psi | 47% | 2283 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,385 psi | 76% | 2487 fps | 99.9% |
| Bofors RP15 | <<locked>> | 98% | 39,871 psi | 62% | 2441 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 41,539 psi | 65% | 2372 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 40,625 psi | 64% | 2457 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 37,173 psi | 58% | 2257 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,562 psi | 82% | 2451 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,386 psi | 79% | 2500 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,148 psi | 66% | 2382 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 80% | 34,563 psi | 54% | 2283 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 82% | 40,118 psi | 63% | 2352 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 49,443 psi | 77% | 2480 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,936 psi | 47% | 2162 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,832 psi | 72% | 2467 fps | 100% |
| Hodgdon Superformance | 62.1 gr | 82% | 35,998 psi | 56% | 2339 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,861 psi | 42% | 1375 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,485 psi | 74% | 2441 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 49,777 psi | 78% | 2461 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,758 psi | 69% | 2372 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,224 psi | 72% | 2398 fps | 98.1% |
| IMR 4350 | <<locked>> | 84% | 37,521 psi | 59% | 2290 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,653 psi | 61% | 2287 fps | 96.2% |
| IMR 4831 | <<locked>> | 80% | 31,444 psi | 49% | 2205 fps | 97.1% |
| IMR 4895 | <<locked>> | 80% | 45,672 psi | 72% | 2451 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 50,183 psi | 79% | 2510 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 80% | 51,010 psi | 80% | 2467 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,718 psi | 76% | 2451 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,631 psi | 76% | 2408 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 43,990 psi | 69% | 2375 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,230 psi | 57% | 2247 fps | 97.1% |
| Lovex S070 | <<locked>> | 80% | 34,287 psi | 54% | 2224 fps | 95.2% |
| Lovex S071 | <<locked>> | 94% | 31,676 psi | 50% | 2218 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 48,138 psi | 75% | 2428 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,573 psi | 76% | 2425 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,918 psi | 69% | 2411 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 42,105 psi | 66% | 2415 fps | 95.4% |
| Norma MRP | <<locked>> | 92% | 37,304 psi | 58% | 2421 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 32,532 psi | 51% | 2238 fps | 97.3% |
| Ramshot Big Game | <<locked>> | 80% | 43,787 psi | 69% | 2431 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 33,750 psi | 53% | 2274 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 50,908 psi | 80% | 2493 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,836 psi | 80% | 2507 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,383 psi | 43% | 1411 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,351 psi | 66% | 2365 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,543 psi | 75% | 2523 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,406 psi | 60% | 2415 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,068 psi | 50% | 2257 fps | 96.9% |
| ReloadSwiss RS 70 | 58.2 gr | 80% | 31,763 psi | 50% | 2257 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 52,112 psi | 82% | 2444 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,818 psi | 72% | 2385 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,102 psi | 61% | 2326 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 94% | 45,861 psi | 72% | 2448 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 92% | 39,726 psi | 62% | 2398 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 37,173 psi | 58% | 2257 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,230 psi | 57% | 2247 fps | 97.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,718 psi | 76% | 2451 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,990 psi | 69% | 2375 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 34,287 psi | 54% | 2224 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,059 psi | 63% | 2375 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,487 psi | 78% | 2474 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,398 psi | 74% | 2448 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,197 psi | 77% | 2365 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,278 psi | 65% | 2254 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 35,360 psi | 55% | 2195 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 39,363 psi | 62% | 2392 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 48,907 psi | 77% | 2369 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,255 psi | 77% | 2464 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 39,929 psi | 63% | 2329 fps | 99.8% |
| Somchem S361 | <<locked>> | 96% | 50,067 psi | 78% | 2490 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 29,196 psi | 46% | 2201 fps | 99.1% |
| Somchem S385 | <<locked>> | 90% | 37,710 psi | 59% | 2333 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 49,647 psi | 78% | 2352 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,701 psi | 72% | 2352 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,847 psi | 72% | 2365 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,826 psi | 59% | 2267 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 33,866 psi | 53% | 2238 fps | 97.6% |
| Vihtavuori N165 | <<locked>> | 96% | 39,639 psi | 62% | 2359 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 51,256 psi | 80% | 2467 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,208 psi | 69% | 2362 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,373 psi | 52% | 2241 fps | 97.3% |
| Vihtavuori N555 | <<locked>> | 80% | 25,295 psi | 40% | 2103 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,402 psi | 52% | 2218 fps | 99.2% |
| Winchester 748 | <<locked>> | 80% | 51,517 psi | 81% | 2513 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 34,563 psi | 54% | 2283 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 84% | 23,395 psi | 37% | 2100 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,108 psi | 74% | 2454 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 42,743 psi | 67% | 2418 fps | 95.7% |
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 122 powders for 8.5 x 68 Fanzoj loaded with the .338 | 250gr | Sierra MatchKing. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,700 fps; across all powders the maximum-charge window runs from 1,542 fps to 2,700 fps. Accurate 3100 gives the best case fill at 100 %, and 122 of the 122 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.338" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2209 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for 8.5 x 68 Fanzoj with the .338 | 250gr | Sierra MatchKing they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, Baschieri & Pellagri 109, Bofors RP30 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.