Load Specifications
Bullet Manufacturer:Barnes
Bullet Weight:220 gr
Bullet Diameter:0.323"
Bullet Length:<<locked>>
Caliber:8 x 68 S load data
Case Length (l3):2.657"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:86 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:25.6"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:13.5
Load data in caliber 8 x 68 S with .323 | 220gr | Barnes Solid RN 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-16.
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>> | 84% | 54,882 psi | 86% | 2543 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 56,246 psi | 88% | 2612 fps | 99.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,066 psi | 77% | 2598 fps | 99.4% |
| Accurate 4064 | <<locked>> | 86% | 55,071 psi | 86% | 2595 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,274 psi | 87% | 2697 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 54,259 psi | 85% | 2621 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,361 psi | 87% | 2625 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,246 psi | 88% | 2736 fps | 98.6% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 50,386 psi | 79% | 2674 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,463 psi | 88% | 2615 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,157 psi | 85% | 2740 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 56,202 psi | 88% | 2733 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,956 psi | 88% | 2648 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,289 psi | 88% | 2667 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,883 psi | 88% | 2746 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 57,246 psi | 90% | 2772 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,361 psi | 87% | 2726 fps | 98.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,820 psi | 77% | 2674 fps | 97.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,021 psi | 72% | 2615 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,350 psi | 63% | 2546 fps | 98.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,373 psi | 82% | 2795 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,056 psi | 85% | 2641 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 44,976 psi | 70% | 2605 fps | 96.7% |
| Bofors RP3 | <<locked>> | 88% | 56,811 psi | 89% | 2664 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,820 psi | 77% | 2674 fps | 97.7% |
| Bofors RP7 | <<locked>> | 92% | 56,289 psi | 88% | 2651 fps | 99.2% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,347 psi | 88% | 2648 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 57,232 psi | 90% | 2680 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 57,551 psi | 90% | 2746 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 92% | 57,682 psi | 90% | 2707 fps | 99% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 53,998 psi | 85% | 2677 fps | 96.5% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 52,895 psi | 83% | 2661 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 82% | 54,839 psi | 86% | 2628 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 56,115 psi | 88% | 2671 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,882 psi | 86% | 2664 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,882 psi | 84% | 2733 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,129 psi | 57% | 1601 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,985 psi | 88% | 2628 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,506 psi | 87% | 2602 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,868 psi | 86% | 2608 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,273 psi | 85% | 2595 fps | 99.3% |
| IMR 4350 | <<locked>> | 96% | 57,014 psi | 89% | 2680 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,636 psi | 86% | 2628 fps | 99.3% |
| IMR 4831 | <<locked>> | 96% | 55,622 psi | 87% | 2687 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 57,725 psi | 90% | 2694 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 55,854 psi | 88% | 2667 fps | 97% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 47,993 psi | 75% | 2648 fps | 95.9% |
| IMR 8208 XBR | <<locked>> | 82% | 56,463 psi | 88% | 2615 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,491 psi | 85% | 2595 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,884 psi | 89% | 2595 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,172 psi | 86% | 2605 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,433 psi | 85% | 2625 fps | 99.9% |
| Lovex S070 | <<locked>> | 94% | 55,550 psi | 87% | 2664 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,683 psi | 64% | 2461 fps | 98.1% |
| Norma 201 | <<locked>> | 84% | 56,652 psi | 89% | 2615 fps | 100% |
| Norma 202 | <<locked>> | 84% | 57,290 psi | 90% | 2608 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,535 psi | 87% | 2654 fps | 100% |
| Norma 204 | <<locked>> | 96% | 57,725 psi | 90% | 2733 fps | 98.7% |
| Norma MRPᴾ | <<locked>> | 100% | 51,692 psi | 81% | 2753 fps | 99.3% |
| Norma URP | <<locked>> | 96% | 57,508 psi | 90% | 2730 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 56,347 psi | 88% | 2684 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 47,834 psi | 75% | 2654 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 96% | 56,231 psi | 88% | 2736 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 42,525 psi | 67% | 2543 fps | 96.7% |
| Ramshot TAC | <<locked>> | 82% | 56,536 psi | 89% | 2644 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,652 psi | 89% | 2657 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,883 psi | 58% | 1640 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 57,261 psi | 90% | 2667 fps | 99.8% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 57,290 psi | 90% | 2733 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 56,840 psi | 89% | 2762 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,940 psi | 86% | 2720 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 57,464 psi | 90% | 2799 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 39,175 psi | 61% | 2552 fps | 96.6% |
| Rottweil R 901 | <<locked>> | 82% | 57,435 psi | 90% | 2585 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 57,246 psi | 90% | 2615 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,637 psi | 89% | 2654 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 54,520 psi | 85% | 2654 fps | 97.4% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,549 psi | 85% | 2710 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 92% | 56,289 psi | 88% | 2651 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,433 psi | 85% | 2625 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,491 psi | 85% | 2595 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,172 psi | 86% | 2605 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,550 psi | 87% | 2664 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,781 psi | 86% | 2671 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,303 psi | 87% | 2628 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 56,159 psi | 88% | 2644 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,508 psi | 90% | 2543 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,911 psi | 86% | 2507 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,302 psi | 85% | 2582 fps | 99.3% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,056 psi | 85% | 2707 fps | 98.5% |
| Somchem S335 | <<locked>> | 84% | 57,232 psi | 90% | 2543 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,998 psi | 86% | 2615 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 56,797 psi | 89% | 2654 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 56,347 psi | 88% | 2651 fps | 96.9% |
| Somchem S365 | <<locked>> | 98% | 56,391 psi | 88% | 2730 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,158 psi | 86% | 2687 fps | 99.2% |
| Vihtavuori N133 | <<locked>> | 82% | 54,781 psi | 86% | 2484 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,392 psi | 90% | 2569 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,375 psi | 85% | 2546 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,491 psi | 85% | 2582 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 56,318 psi | 88% | 2674 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,572 psi | 75% | 2562 fps | 97.8% |
| Vihtavuori N530 | <<locked>> | 82% | 56,942 psi | 89% | 2612 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 55,912 psi | 88% | 2589 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 55,172 psi | 86% | 2680 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,619 psi | 81% | 2690 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 52,330 psi | 82% | 2743 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 56,057 psi | 88% | 2648 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 57,595 psi | 90% | 2661 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 54,114 psi | 85% | 2697 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,524 psi | 65% | 2667 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 56,217 psi | 88% | 2651 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 51,648 psi | 81% | 2631 fps | 97.9% |
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% | 48,095 psi | 75% | 2457 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,282 psi | 73% | 2461 fps | 97.6% |
| Accurate 3100 | <<locked>> | 88% | 32,764 psi | 51% | 2297 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 45,527 psi | 71% | 2464 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,229 psi | 54% | 2339 fps | 98% |
| ADI AR 2206H | <<locked>> | 80% | 51,068 psi | 80% | 2575 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,352 psi | 68% | 2441 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 40,930 psi | 64% | 2477 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 98% | 47,340 psi | 74% | 2621 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,142 psi | 83% | 2569 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,282 psi | 74% | 2635 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 40,843 psi | 64% | 2477 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,555 psi | 68% | 2464 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,630 psi | 73% | 2526 fps | 100% |
| Alliant Reloder-16 | 52.1 gr | 80% | 33,895 psi | 53% | 2352 fps | 98.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,985 psi | 60% | 2464 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 40,379 psi | 63% | 2470 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 94% | 40,292 psi | 63% | 2516 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 24,700 psi | 39% | 2129 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 92% | 31,575 psi | 49% | 2336 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 84% | 29,834 psi | 47% | 2336 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,662 psi | 79% | 2592 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 39,566 psi | 62% | 2500 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 43,714 psi | 69% | 2474 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 40,292 psi | 63% | 2516 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 38,769 psi | 61% | 2356 fps | 96% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,750 psi | 83% | 2598 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,266 psi | 69% | 2484 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 80% | 36,289 psi | 57% | 2382 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 80% | 39,436 psi | 62% | 2402 fps | 95.4% |
| Hodgdon H4831 | <<locked>> | 98% | 50,633 psi | 79% | 2625 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 98% | 49,647 psi | 78% | 2612 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 51,590 psi | 81% | 2582 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,444 psi | 49% | 2257 fps | 98.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,037 psi | 75% | 2569 fps | 100% |
| Hodgdon Superformance | 60.8 gr | 82% | 37,826 psi | 59% | 2444 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,977 psi | 42% | 1427 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,298 psi | 77% | 2536 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 52,069 psi | 82% | 2559 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,571 psi | 71% | 2470 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,877 psi | 75% | 2497 fps | 98.5% |
| IMR 4350 | <<locked>> | 82% | 36,753 psi | 58% | 2336 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,277 psi | 63% | 2385 fps | 96.9% |
| IMR 4831 | <<locked>> | 80% | 33,214 psi | 52% | 2303 fps | 97.8% |
| IMR 4895 | <<locked>> | 80% | 47,805 psi | 75% | 2552 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 49,501 psi | 78% | 2572 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 98% | 44,831 psi | 70% | 2589 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 53,142 psi | 83% | 2569 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,966 psi | 80% | 2549 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,444 psi | 79% | 2507 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,905 psi | 72% | 2470 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,666 psi | 59% | 2339 fps | 97.6% |
| Lovex S070 | <<locked>> | 80% | 35,911 psi | 56% | 2320 fps | 96% |
| Lovex S071 | <<locked>> | 92% | 31,647 psi | 50% | 2274 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 49,879 psi | 78% | 2523 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,459 psi | 79% | 2520 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,977 psi | 72% | 2513 fps | 100% |
| Norma 204 | <<locked>> | 86% | 41,307 psi | 65% | 2467 fps | 95.4% |
| Norma MRP | <<locked>> | 90% | 36,840 psi | 58% | 2474 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 34,287 psi | 54% | 2339 fps | 97.9% |
| Ramshot Big Game | <<locked>> | 80% | 45,977 psi | 72% | 2533 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 44,599 psi | 70% | 2595 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 33,359 psi | 52% | 2326 fps | 95.8% |
| Ramshot Magnum | <<locked>> | 98% | 39,624 psi | 62% | 2484 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 53,084 psi | 83% | 2598 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 53,127 psi | 83% | 2612 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,543 psi | 43% | 1467 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,411 psi | 70% | 2470 fps | 98.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,154 psi | 79% | 2635 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,408 psi | 63% | 2513 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,968 psi | 53% | 2359 fps | 97.7% |
| ReloadSwiss RS 70 | 57 gr | 80% | 33,359 psi | 52% | 2362 fps | 96.9% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 36,477 psi | 57% | 2490 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 54,056 psi | 85% | 2543 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,688 psi | 75% | 2480 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,133 psi | 64% | 2425 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 45,252 psi | 71% | 2507 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 90% | 39,146 psi | 61% | 2451 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 38,769 psi | 61% | 2356 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,666 psi | 59% | 2339 fps | 97.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,966 psi | 80% | 2549 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,905 psi | 72% | 2470 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 35,911 psi | 56% | 2320 fps | 96% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,206 psi | 66% | 2477 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,779 psi | 81% | 2575 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,603 psi | 78% | 2549 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,981 psi | 80% | 2461 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,888 psi | 67% | 2343 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 36,869 psi | 58% | 2287 fps | 96.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 38,798 psi | 61% | 2448 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 50,560 psi | 79% | 2457 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,561 psi | 81% | 2566 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,568 psi | 65% | 2425 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 49,472 psi | 78% | 2549 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 30,835 psi | 48% | 2300 fps | 99.5% |
| Somchem S385 | <<locked>> | 88% | 37,405 psi | 59% | 2388 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 51,474 psi | 81% | 2444 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,674 psi | 75% | 2448 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,877 psi | 75% | 2457 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,653 psi | 62% | 2359 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 35,708 psi | 56% | 2336 fps | 98.2% |
| Vihtavuori N165 | <<locked>> | 94% | 39,204 psi | 61% | 2415 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 53,519 psi | 84% | 2569 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,253 psi | 72% | 2457 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,215 psi | 55% | 2343 fps | 97.9% |
| Vihtavuori N555 | <<locked>> | 80% | 26,818 psi | 42% | 2198 fps | 95.9% |
| Vihtavuori N560 | <<locked>> | 96% | 45,774 psi | 72% | 2628 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,012 psi | 55% | 2313 fps | 99.5% |
| Winchester 748 | <<locked>> | 80% | 53,853 psi | 84% | 2615 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 36,477 psi | 57% | 2388 fps | 96% |
| Winchester StaBALL HD | <<locked>> | 82% | 23,163 psi | 36% | 2146 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,327 psi | 77% | 2556 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 42,105 psi | 66% | 2474 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 113 powders for 8 x 68 S loaded with the .323 | 220gr | Barnes Solid RN. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,799 fps; across all powders the maximum-charge window runs from 1,601 fps to 2,799 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 57–90 %, leaving at least 10 % headroom. The 220.0 gr projectile in 0.323" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, 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, Hodgdon Superformance, Alliant Reloder-16 rank at the top here: for 8 x 68 S with the .323 | 220gr | Barnes Solid RN 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.