Load Specifications
Bullet:.338 | 250gr | Norma GTX
Bullet Manufacturer:Norma
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 | Norma GTX bullet and 109 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% | 56,449 psi | 88% | 2454 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,753 psi | 87% | 2487 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 57,087 psi | 89% | 2549 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 57,740 psi | 90% | 2556 fps | 99.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,209 psi | 72% | 2490 fps | 99% |
| Accurate 4064 | <<locked>> | 88% | 56,014 psi | 88% | 2539 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,115 psi | 88% | 2638 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 55,521 psi | 87% | 2566 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,536 psi | 89% | 2569 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,621 psi | 84% | 2625 fps | 98.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,578 psi | 86% | 2520 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,869 psi | 88% | 2484 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,622 psi | 87% | 2690 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,913 psi | 89% | 2589 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,551 psi | 90% | 2612 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,826 psi | 89% | 2687 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,418 psi | 85% | 2667 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,692 psi | 83% | 2615 fps | 98.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,224 psi | 72% | 2562 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,656 psi | 68% | 2513 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,319 psi | 60% | 2434 fps | 98.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,139 psi | 77% | 2677 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,390 psi | 87% | 2589 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 42,699 psi | 67% | 2497 fps | 95.9% |
| Bofors RP3 | <<locked>> | 88% | 54,157 psi | 85% | 2562 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,224 psi | 72% | 2562 fps | 97% |
| Bofors RP7 | <<locked>> | 94% | 57,450 psi | 90% | 2592 fps | 99.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,898 psi | 88% | 2493 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,740 psi | 90% | 2595 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,955 psi | 86% | 2579 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 54,926 psi | 86% | 2638 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 92% | 55,230 psi | 87% | 2598 fps | 98.6% |
| Hodgdon H4895 | <<locked>> | 84% | 56,159 psi | 88% | 2575 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 56,985 psi | 89% | 2612 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,912 psi | 88% | 2608 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,042 psi | 86% | 2674 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,071 psi | 57% | 1545 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,319 psi | 90% | 2575 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,695 psi | 89% | 2549 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,159 psi | 88% | 2552 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,767 psi | 87% | 2543 fps | 99.4% |
| IMR 4350 | <<locked>> | 96% | 54,447 psi | 85% | 2575 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,883 psi | 88% | 2575 fps | 99.4% |
| IMR 4831 | <<locked>> | 98% | 56,376 psi | 88% | 2628 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 55,419 psi | 87% | 2592 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 53,403 psi | 84% | 2559 fps | 96.4% |
| IMR 8208 XBR | <<locked>> | 82% | 54,578 psi | 86% | 2520 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,796 psi | 87% | 2543 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,926 psi | 86% | 2500 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,115 psi | 88% | 2546 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,463 psi | 87% | 2569 fps | 99.9% |
| Lovex S070 | <<locked>> | 96% | 56,362 psi | 88% | 2602 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,522 psi | 60% | 2359 fps | 97.5% |
| Norma 201 | <<locked>> | 84% | 54,462 psi | 85% | 2516 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,027 psi | 86% | 2513 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,753 psi | 89% | 2602 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,013 psi | 86% | 2625 fps | 98.2% |
| Norma MRPᴾ | <<locked>> | 100% | 48,892 psi | 77% | 2638 fps | 98.8% |
| Norma URP | <<locked>> | 96% | 54,694 psi | 86% | 2621 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 57,435 psi | 90% | 2628 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,058 psi | 89% | 2677 fps | 99.9% |
| Ramshot TAC | <<locked>> | 82% | 54,563 psi | 86% | 2546 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,346 psi | 85% | 2556 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,550 psi | 57% | 1581 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,013 psi | 86% | 2566 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,665 psi | 86% | 2628 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,230 psi | 85% | 2661 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,564 psi | 87% | 2661 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,694 psi | 86% | 2690 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 55,521 psi | 87% | 2490 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,013 psi | 86% | 2513 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 57,725 psi | 90% | 2598 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 55,463 psi | 87% | 2598 fps | 97.4% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,706 psi | 81% | 2602 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 94% | 57,450 psi | 90% | 2592 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,463 psi | 87% | 2569 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,796 psi | 87% | 2543 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,115 psi | 88% | 2546 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,362 psi | 88% | 2602 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,912 psi | 88% | 2615 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,768 psi | 89% | 2575 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,435 psi | 90% | 2589 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,622 psi | 87% | 2448 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,057 psi | 88% | 2451 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,361 psi | 87% | 2523 fps | 99.3% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,213 psi | 80% | 2595 fps | 98% |
| Somchem S335 | <<locked>> | 84% | 55,143 psi | 86% | 2451 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,391 psi | 88% | 2559 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,404 psi | 85% | 2552 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 57,551 psi | 90% | 2595 fps | 96.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 56,826 psi | 89% | 2667 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,286 psi | 82% | 2579 fps | 98.7% |
| Vihtavuori N133 | <<locked>> | 84% | 56,014 psi | 88% | 2431 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,071 psi | 86% | 2474 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,637 psi | 87% | 2493 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,622 psi | 87% | 2526 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,290 psi | 90% | 2618 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,150 psi | 71% | 2457 fps | 97.1% |
| Vihtavuori N530 | <<locked>> | 82% | 54,969 psi | 86% | 2516 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,145 psi | 90% | 2536 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,217 psi | 88% | 2628 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,733 psi | 76% | 2582 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 49,661 psi | 78% | 2625 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,130 psi | 90% | 2592 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,187 psi | 86% | 2562 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 54,926 psi | 86% | 2638 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,102 psi | 61% | 2552 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 57,595 psi | 90% | 2598 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,153 psi | 77% | 2523 fps | 97.3% |
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% | 53,156 psi | 83% | 2418 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,050 psi | 72% | 2365 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,534 psi | 84% | 2507 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,628 psi | 70% | 2362 fps | 97.1% |
| Accurate 3100 | <<locked>> | 88% | 30,864 psi | 48% | 2201 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 43,613 psi | 68% | 2372 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,474 psi | 51% | 2244 fps | 97.5% |
| ADI AR 2206H | <<locked>> | 80% | 49,153 psi | 77% | 2477 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 41,829 psi | 66% | 2349 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 41,669 psi | 65% | 2425 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,242 psi | 80% | 2474 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,446 psi | 82% | 2441 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,208 psi | 71% | 2533 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,843 psi | 66% | 2369 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,759 psi | 70% | 2428 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,547 psi | 51% | 2257 fps | 97.6% |
| Alliant Reloder-17 | 57.5 gr | 80% | 36,274 psi | 57% | 2365 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 40,973 psi | 64% | 2418 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 96% | 40,770 psi | 64% | 2461 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 82% | 25,193 psi | 39% | 2090 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 94% | 31,923 psi | 50% | 2283 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 86% | 30,182 psi | 47% | 2287 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,602 psi | 76% | 2493 fps | 99.9% |
| Bofors RP15 | <<locked>> | 98% | 40,016 psi | 63% | 2444 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 41,742 psi | 65% | 2379 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 40,770 psi | 64% | 2461 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 37,333 psi | 59% | 2264 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,779 psi | 83% | 2454 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,618 psi | 79% | 2503 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,337 psi | 66% | 2385 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 80% | 34,563 psi | 54% | 2283 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 82% | 40,277 psi | 63% | 2356 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 49,647 psi | 78% | 2487 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,950 psi | 47% | 2162 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,803 psi | 72% | 2470 fps | 100% |
| Hodgdon Superformance | 62.3 gr | 82% | 36,114 psi | 57% | 2346 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,948 psi | 42% | 1378 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,500 psi | 74% | 2441 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 49,995 psi | 78% | 2464 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,932 psi | 69% | 2375 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,166 psi | 72% | 2398 fps | 98.1% |
| IMR 4350 | <<locked>> | 84% | 37,507 psi | 59% | 2290 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,624 psi | 61% | 2290 fps | 96.3% |
| IMR 4831 | <<locked>> | 80% | 31,444 psi | 49% | 2205 fps | 97.2% |
| IMR 4895 | <<locked>> | 80% | 45,876 psi | 72% | 2454 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 47,253 psi | 74% | 2464 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 51,242 psi | 80% | 2474 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,936 psi | 77% | 2454 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,646 psi | 76% | 2411 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 44,005 psi | 69% | 2375 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,230 psi | 57% | 2247 fps | 97.1% |
| Lovex S070 | <<locked>> | 80% | 34,432 psi | 54% | 2228 fps | 95.3% |
| Lovex S071 | <<locked>> | 94% | 31,807 psi | 50% | 2221 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 48,153 psi | 75% | 2428 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,588 psi | 76% | 2428 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,121 psi | 69% | 2418 fps | 100% |
| Norma 204 | <<locked>> | 88% | 42,061 psi | 66% | 2415 fps | 95.4% |
| Norma MRP | <<locked>> | 90% | 34,954 psi | 55% | 2369 fps | 95% |
| Norma URP | <<locked>> | 80% | 32,677 psi | 51% | 2244 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 80% | 43,976 psi | 69% | 2438 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 80% | 31,807 psi | 50% | 2231 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 51,111 psi | 80% | 2497 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,024 psi | 80% | 2513 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,282 psi | 43% | 1411 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,540 psi | 67% | 2372 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,790 psi | 75% | 2530 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,609 psi | 61% | 2418 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,111 psi | 50% | 2260 fps | 97% |
| ReloadSwiss RS 70 | 58.4 gr | 80% | 31,894 psi | 50% | 2264 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 80% | 52,359 psi | 82% | 2451 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,774 psi | 72% | 2385 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,305 psi | 62% | 2329 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 94% | 46,021 psi | 72% | 2454 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 92% | 39,697 psi | 62% | 2398 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 37,333 psi | 59% | 2264 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,230 psi | 57% | 2247 fps | 97.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,936 psi | 77% | 2454 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,005 psi | 69% | 2375 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 34,432 psi | 54% | 2228 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,277 psi | 63% | 2379 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,719 psi | 78% | 2477 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,572 psi | 75% | 2451 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% | 39,334 psi | 62% | 2392 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 48,878 psi | 77% | 2369 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,487 psi | 78% | 2467 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 39,900 psi | 63% | 2333 fps | 99.8% |
| Somchem S361 | <<locked>> | 96% | 50,430 psi | 79% | 2497 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 29,327 psi | 46% | 2208 fps | 99.2% |
| Somchem S385 | <<locked>> | 90% | 37,826 psi | 59% | 2339 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 49,661 psi | 78% | 2352 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,687 psi | 72% | 2356 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,035 psi | 72% | 2369 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,043 psi | 60% | 2270 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 34,011 psi | 53% | 2241 fps | 97.7% |
| Vihtavuori N165 | <<locked>> | 96% | 39,784 psi | 62% | 2362 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 51,488 psi | 81% | 2470 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,411 psi | 70% | 2365 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,547 psi | 53% | 2247 fps | 97.3% |
| Vihtavuori N555 | <<locked>> | 80% | 25,309 psi | 40% | 2106 fps | 95.1% |
| Vihtavuori N560 | <<locked>> | 98% | 46,543 psi | 73% | 2572 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,533 psi | 53% | 2221 fps | 99.2% |
| Winchester 748 | <<locked>> | 80% | 51,706 psi | 81% | 2516 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 34,708 psi | 54% | 2287 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 84% | 23,511 psi | 37% | 2103 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,326 psi | 74% | 2457 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 42,902 psi | 67% | 2421 fps | 95.8% |
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 109 powders for 8.5 x 68 Fanzoj loaded with the .338 | 250gr | Norma GTX. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,690 fps; across all powders the maximum-charge window runs from 1,545 fps to 2,690 fps. Accurate 3100 gives the best case fill at 100 %, and 109 of the 109 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 250.0 gr projectile in 0.338" calls for a 1:12.5 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for 8.5 x 68 Fanzoj with the .338 | 250gr | Norma GTX 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.