Load Specifications
Bullet:.338 | 250gr | Barnes MRX BT
Bullet Manufacturer:Barnes
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:1:14.0
Load data in caliber 8.5 x 68 Fanzoj with .338 | 250gr | Barnes MRX BT bullet and 113 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% | 56,289 psi | 88% | 2467 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,230 psi | 87% | 2497 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,985 psi | 89% | 2559 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 57,580 psi | 90% | 2569 fps | 99.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,050 psi | 72% | 2500 fps | 99.1% |
| Accurate 4064 | <<locked>> | 88% | 55,303 psi | 87% | 2543 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,956 psi | 88% | 2651 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 50,357 psi | 79% | 2680 fps | 97.1% |
| ADI AR 2206H | <<locked>> | 84% | 55,593 psi | 87% | 2579 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,594 psi | 89% | 2582 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,838 psi | 84% | 2641 fps | 98.3% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,462 psi | 85% | 2530 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,840 psi | 88% | 2493 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,666 psi | 87% | 2703 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 53,679 psi | 84% | 2638 fps | 98.3% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 53,679 psi | 84% | 2638 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,884 psi | 89% | 2602 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,508 psi | 90% | 2625 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,985 psi | 89% | 2700 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,476 psi | 85% | 2677 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,823 psi | 83% | 2631 fps | 98.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,209 psi | 72% | 2575 fps | 97.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,468 psi | 68% | 2523 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,159 psi | 60% | 2448 fps | 98.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,211 psi | 77% | 2694 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,303 psi | 87% | 2598 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 42,409 psi | 66% | 2507 fps | 96.1% |
| Bofors RP3 | <<locked>> | 88% | 53,896 psi | 84% | 2572 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,209 psi | 72% | 2575 fps | 97.2% |
| Bofors RP7 | <<locked>> | 94% | 57,508 psi | 90% | 2608 fps | 99.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,869 psi | 88% | 2507 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,595 psi | 90% | 2605 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,752 psi | 86% | 2589 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 54,955 psi | 86% | 2651 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 92% | 55,405 psi | 87% | 2618 fps | 98.8% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 51,619 psi | 81% | 2582 fps | 96% |
| Hodgdon H4895 | <<locked>> | 84% | 56,202 psi | 88% | 2589 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,087 psi | 89% | 2625 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,173 psi | 88% | 2625 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,071 psi | 86% | 2690 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,955 psi | 56% | 1552 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,421 psi | 90% | 2589 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,666 psi | 89% | 2559 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,246 psi | 88% | 2569 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,811 psi | 87% | 2559 fps | 99.5% |
| IMR 4350 | <<locked>> | 96% | 54,491 psi | 85% | 2589 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,796 psi | 87% | 2585 fps | 99.4% |
| IMR 4831 | <<locked>> | 98% | 56,246 psi | 88% | 2638 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 55,390 psi | 87% | 2605 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 53,592 psi | 84% | 2579 fps | 96.6% |
| IMR 8208 XBR | <<locked>> | 82% | 54,462 psi | 85% | 2530 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,593 psi | 87% | 2552 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,839 psi | 86% | 2510 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,985 psi | 88% | 2559 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,172 psi | 86% | 2579 fps | 99.9% |
| Lovex S070 | <<locked>> | 96% | 56,289 psi | 88% | 2615 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,116 psi | 60% | 2365 fps | 97.6% |
| Norma 201 | <<locked>> | 86% | 57,682 psi | 90% | 2569 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,853 psi | 86% | 2523 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,739 psi | 89% | 2615 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,259 psi | 87% | 2641 fps | 98.4% |
| Norma MRPᴾ | <<locked>> | 100% | 48,849 psi | 77% | 2651 fps | 98.9% |
| Norma URP | <<locked>> | 96% | 54,708 psi | 86% | 2635 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 57,566 psi | 90% | 2641 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,232 psi | 90% | 2690 fps | 99.9% |
| Ramshot TAC | <<locked>> | 82% | 54,505 psi | 85% | 2559 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,346 psi | 85% | 2569 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,390 psi | 57% | 1588 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,824 psi | 86% | 2575 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,679 psi | 86% | 2641 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,389 psi | 85% | 2674 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,724 psi | 87% | 2674 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,839 psi | 86% | 2707 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 54,897 psi | 86% | 2497 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,679 psi | 86% | 2523 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 57,682 psi | 90% | 2612 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 55,709 psi | 87% | 2615 fps | 97.6% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,590 psi | 81% | 2612 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 94% | 57,508 psi | 90% | 2608 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,172 psi | 86% | 2579 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,593 psi | 87% | 2552 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,985 psi | 88% | 2559 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,289 psi | 88% | 2615 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,767 psi | 87% | 2625 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,840 psi | 89% | 2589 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,464 psi | 90% | 2602 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,535 psi | 87% | 2461 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,898 psi | 88% | 2461 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,288 psi | 87% | 2536 fps | 99.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,111 psi | 80% | 2608 fps | 98.1% |
| Somchem S335 | <<locked>> | 84% | 54,926 psi | 86% | 2461 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,347 psi | 88% | 2572 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,215 psi | 85% | 2562 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 57,493 psi | 90% | 2608 fps | 97% |
| Somchem S365ᴾ | <<locked>> | 100% | 57,101 psi | 89% | 2680 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,257 psi | 82% | 2592 fps | 98.8% |
| Vihtavuori N133 | <<locked>> | 84% | 55,999 psi | 88% | 2444 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,882 psi | 86% | 2484 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,419 psi | 87% | 2503 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,695 psi | 87% | 2543 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,392 psi | 90% | 2631 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,121 psi | 71% | 2470 fps | 97.3% |
| Vihtavuori N530 | <<locked>> | 82% | 54,810 psi | 86% | 2526 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 56,971 psi | 89% | 2546 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,101 psi | 88% | 2638 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,515 psi | 76% | 2592 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 49,617 psi | 78% | 2641 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,261 psi | 90% | 2605 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,259 psi | 87% | 2575 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,216 psi | 87% | 2657 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,030 psi | 61% | 2566 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 57,522 psi | 90% | 2608 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,153 psi | 77% | 2536 fps | 97.4% |
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% | 52,765 psi | 83% | 2425 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,368 psi | 71% | 2369 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,171 psi | 83% | 2513 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,309 psi | 69% | 2372 fps | 97.2% |
| Accurate 3100 | <<locked>> | 90% | 32,518 psi | 51% | 2251 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 43,018 psi | 67% | 2375 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 31,981 psi | 50% | 2247 fps | 97.4% |
| Accurate High Country | <<locked>> | 96% | 43,845 psi | 69% | 2569 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 49,008 psi | 77% | 2487 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 41,524 psi | 65% | 2356 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 41,452 psi | 65% | 2434 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,140 psi | 80% | 2484 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,199 psi | 82% | 2451 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,020 psi | 71% | 2543 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 41,423 psi | 65% | 2438 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 41,423 psi | 65% | 2438 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,582 psi | 65% | 2379 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,527 psi | 70% | 2438 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,126 psi | 50% | 2260 fps | 97.6% |
| Alliant Reloder-17 | 58.7 gr | 80% | 35,955 psi | 56% | 2372 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 40,901 psi | 64% | 2431 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 96% | 40,538 psi | 64% | 2470 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 82% | 24,569 psi | 39% | 2087 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 94% | 31,575 psi | 49% | 2290 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 86% | 29,791 psi | 47% | 2290 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,370 psi | 76% | 2500 fps | 99.9% |
| Bofors RP15 | <<locked>> | 98% | 39,784 psi | 62% | 2454 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 41,292 psi | 65% | 2385 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 40,538 psi | 64% | 2470 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 36,825 psi | 58% | 2267 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,518 psi | 82% | 2464 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,270 psi | 79% | 2510 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,989 psi | 66% | 2392 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 80% | 34,214 psi | 54% | 2290 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 82% | 40,059 psi | 63% | 2365 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 98% | 48,283 psi | 76% | 2533 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 49,501 psi | 78% | 2497 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,472 psi | 46% | 2165 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,832 psi | 72% | 2480 fps | 100% |
| Hodgdon Superformance | 63.6 gr | 82% | 35,766 psi | 56% | 2352 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,818 psi | 42% | 1385 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,413 psi | 74% | 2451 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 49,763 psi | 78% | 2474 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,656 psi | 68% | 2385 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,021 psi | 72% | 2411 fps | 98.2% |
| IMR 4350 | <<locked>> | 84% | 37,391 psi | 59% | 2303 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,464 psi | 60% | 2300 fps | 96.4% |
| IMR 4831 | <<locked>> | 80% | 31,038 psi | 49% | 2208 fps | 97.1% |
| IMR 4895 | <<locked>> | 80% | 45,672 psi | 72% | 2464 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 47,195 psi | 74% | 2480 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 51,140 psi | 80% | 2484 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,530 psi | 76% | 2461 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,617 psi | 76% | 2425 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 43,743 psi | 69% | 2385 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 35,868 psi | 56% | 2254 fps | 97.1% |
| Lovex S070 | <<locked>> | 80% | 34,026 psi | 53% | 2234 fps | 95.3% |
| Lovex S071 | <<locked>> | 94% | 31,227 psi | 49% | 2221 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 47,834 psi | 75% | 2438 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,443 psi | 76% | 2438 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,903 psi | 69% | 2428 fps | 100% |
| Norma 204 | <<locked>> | 88% | 42,018 psi | 66% | 2431 fps | 95.6% |
| Norma MRP | <<locked>> | 90% | 34,679 psi | 54% | 2375 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 32,358 psi | 51% | 2251 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 80% | 43,700 psi | 68% | 2444 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 80% | 31,401 psi | 49% | 2234 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 51,068 psi | 80% | 2510 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,778 psi | 80% | 2523 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,093 psi | 42% | 1417 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,221 psi | 66% | 2379 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,630 psi | 75% | 2539 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,319 psi | 60% | 2425 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,778 psi | 50% | 2264 fps | 97% |
| ReloadSwiss RS 70 | 59.6 gr | 80% | 31,473 psi | 49% | 2267 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 80% | 51,779 psi | 81% | 2457 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,498 psi | 71% | 2395 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 38,870 psi | 61% | 2336 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 94% | 45,818 psi | 72% | 2464 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 92% | 39,581 psi | 62% | 2411 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 36,825 psi | 58% | 2267 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,868 psi | 56% | 2254 fps | 97.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,530 psi | 76% | 2461 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,743 psi | 69% | 2385 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 34,026 psi | 53% | 2234 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,016 psi | 63% | 2385 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,530 psi | 78% | 2490 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,398 psi | 74% | 2461 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,950 psi | 77% | 2375 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,988 psi | 64% | 2264 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 34,983 psi | 55% | 2201 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 39,218 psi | 61% | 2405 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 48,675 psi | 76% | 2379 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,197 psi | 77% | 2477 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 39,581 psi | 62% | 2339 fps | 99.9% |
| Somchem S361 | <<locked>> | 96% | 50,444 psi | 79% | 2510 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 28,921 psi | 45% | 2208 fps | 99.2% |
| Somchem S385 | <<locked>> | 90% | 37,637 psi | 59% | 2346 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 49,487 psi | 78% | 2362 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,368 psi | 71% | 2362 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,890 psi | 72% | 2379 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,710 psi | 59% | 2277 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 33,736 psi | 53% | 2251 fps | 97.7% |
| Vihtavuori N165 | <<locked>> | 96% | 39,523 psi | 62% | 2372 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 51,343 psi | 80% | 2484 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,135 psi | 69% | 2375 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,156 psi | 52% | 2251 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 82% | 26,513 psi | 42% | 2152 fps | 95.9% |
| Vihtavuori N560 | <<locked>> | 98% | 46,485 psi | 73% | 2585 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,098 psi | 52% | 2224 fps | 99.2% |
| Winchester 748 | <<locked>> | 80% | 51,590 psi | 81% | 2526 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 34,403 psi | 54% | 2297 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 86% | 24,439 psi | 38% | 2159 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,094 psi | 74% | 2467 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 39,885 psi | 63% | 2382 fps | 95.1% |
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 113 powders for 8.5 x 68 Fanzoj loaded with the .338 | 250gr | Barnes MRX BT. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,707 fps; across all powders the maximum-charge window runs from 1,552 fps to 2,707 fps. Accurate 3100 gives the best case fill at 100 %, and 113 of the 113 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.338" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, 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 | Barnes MRX BT 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.