Load Specifications
Bullet Manufacturer:Woodleigh
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:1:14.0
Load data in caliber 8 x 68 S with .323 | 220gr | Woodleigh PP SN 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-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% | 55,216 psi | 87% | 2552 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 54,534 psi | 85% | 2585 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,705 psi | 78% | 2612 fps | 99.5% |
| Accurate 4064 | <<locked>> | 86% | 55,680 psi | 87% | 2605 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,796 psi | 87% | 2707 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 54,781 psi | 86% | 2631 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,854 psi | 88% | 2638 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,855 psi | 89% | 2749 fps | 98.8% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 50,981 psi | 80% | 2687 fps | 96.6% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,971 psi | 89% | 2625 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,984 psi | 86% | 2756 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 56,521 psi | 89% | 2657 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,811 psi | 89% | 2680 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 56,594 psi | 89% | 2759 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 54,157 psi | 85% | 2736 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 56,014 psi | 88% | 2740 fps | 98.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,400 psi | 77% | 2687 fps | 97.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,644 psi | 73% | 2631 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,828 psi | 64% | 2559 fps | 98.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,272 psi | 83% | 2812 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,505 psi | 85% | 2651 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 45,513 psi | 71% | 2618 fps | 97% |
| Bofors RP3 | <<locked>> | 88% | 57,305 psi | 90% | 2674 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,400 psi | 77% | 2687 fps | 97.9% |
| Bofors RP7 | <<locked>> | 92% | 56,710 psi | 89% | 2661 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,840 psi | 89% | 2657 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 54,317 psi | 85% | 2644 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 55,840 psi | 88% | 2726 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 94% | 56,521 psi | 89% | 2697 fps | 98.9% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 53,476 psi | 84% | 2674 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 82% | 55,419 psi | 87% | 2638 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 56,913 psi | 89% | 2684 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,666 psi | 87% | 2677 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 54,462 psi | 85% | 2746 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,303 psi | 57% | 1608 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,463 psi | 87% | 2628 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,839 psi | 86% | 2598 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,868 psi | 86% | 2612 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 57,276 psi | 90% | 2641 fps | 99.6% |
| IMR 4350 | <<locked>> | 96% | 57,363 psi | 90% | 2690 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,100 psi | 86% | 2641 fps | 99.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 56,855 psi | 89% | 2707 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 54,882 psi | 86% | 2661 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 56,420 psi | 88% | 2680 fps | 97.2% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,214 psi | 82% | 2723 fps | 97% |
| IMR 8208 XBR | <<locked>> | 82% | 56,971 psi | 89% | 2625 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,071 psi | 86% | 2605 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 57,174 psi | 90% | 2605 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,434 psi | 87% | 2612 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,868 psi | 86% | 2635 fps | 99.9% |
| Lovex S070 | <<locked>> | 94% | 55,970 psi | 88% | 2674 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,321 psi | 65% | 2474 fps | 98.3% |
| Norma 201 | <<locked>> | 84% | 56,942 psi | 89% | 2621 fps | 100% |
| Norma 202 | <<locked>> | 84% | 57,595 psi | 90% | 2615 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,057 psi | 88% | 2664 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,592 psi | 86% | 2694 fps | 98.4% |
| Norma MRPᴾ | <<locked>> | 100% | 52,315 psi | 82% | 2766 fps | 99.4% |
| Norma URP | <<locked>> | 94% | 54,491 psi | 85% | 2694 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 56,811 psi | 89% | 2694 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,782 psi | 87% | 2785 fps | 98% |
| Ramshot Hunter | <<locked>> | 96% | 56,884 psi | 89% | 2749 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,312 psi | 76% | 2648 fps | 98.2% |
| Ramshot TAC | <<locked>> | 82% | 57,217 psi | 90% | 2661 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 82% | 57,130 psi | 90% | 2667 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,840 psi | 58% | 1644 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 54,418 psi | 85% | 2631 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,099 psi | 85% | 2694 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 57,595 psi | 90% | 2776 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 55,651 psi | 87% | 2733 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 54,317 psi | 85% | 2759 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 39,581 psi | 62% | 2569 fps | 96.9% |
| Rottweil R 902 | <<locked>> | 86% | 57,580 psi | 90% | 2621 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 57,435 psi | 90% | 2671 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 55,172 psi | 86% | 2671 fps | 97.6% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 55,216 psi | 87% | 2726 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 92% | 56,710 psi | 89% | 2661 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,868 psi | 86% | 2635 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,071 psi | 86% | 2605 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,434 psi | 87% | 2612 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,970 psi | 88% | 2674 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 55,259 psi | 87% | 2680 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,057 psi | 88% | 2641 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 56,652 psi | 89% | 2654 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,592 psi | 86% | 2510 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,158 psi | 86% | 2513 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,737 psi | 86% | 2592 fps | 99.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,708 psi | 86% | 2720 fps | 98.7% |
| Somchem S335 | <<locked>> | 84% | 57,493 psi | 90% | 2549 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,521 psi | 87% | 2625 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 57,276 psi | 90% | 2664 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 57,087 psi | 89% | 2667 fps | 97.1% |
| Somchem S365 | <<locked>> | 98% | 57,188 psi | 90% | 2740 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,782 psi | 87% | 2700 fps | 99.3% |
| Unknown powder | <<locked>> | 92% | 55,405 psi | 87% | 2700 fps | 100% |
| Vihtavuori N133 | <<locked>> | 82% | 55,100 psi | 86% | 2493 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 54,534 psi | 85% | 2536 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,926 psi | 86% | 2556 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 55,230 psi | 87% | 2595 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 56,797 psi | 89% | 2687 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,211 psi | 76% | 2579 fps | 98% |
| Vihtavuori N530 | <<locked>> | 82% | 57,479 psi | 90% | 2625 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 56,376 psi | 88% | 2598 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 55,883 psi | 88% | 2697 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,344 psi | 82% | 2700 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 52,881 psi | 83% | 2753 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 56,637 psi | 89% | 2657 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,840 psi | 88% | 2726 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,018 psi | 66% | 2680 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,114 psi | 85% | 2671 fps | 98.3% |
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 2495 | <<locked>> | 80% | 48,704 psi | 76% | 2467 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 41,989 psi | 66% | 2382 fps | 96.7% |
| Accurate 3100 | <<locked>> | 86% | 30,951 psi | 49% | 2260 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 46,137 psi | 72% | 2474 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,751 psi | 54% | 2356 fps | 98.2% |
| ADI AR 2206H | <<locked>> | 80% | 51,619 psi | 81% | 2585 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,830 psi | 69% | 2454 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 41,321 psi | 65% | 2487 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 98% | 47,877 psi | 75% | 2635 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,679 psi | 84% | 2582 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,790 psi | 75% | 2648 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,092 psi | 69% | 2477 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,152 psi | 74% | 2539 fps | 100% |
| Alliant Reloder-16 | 52.7 gr | 80% | 34,316 psi | 54% | 2365 fps | 98.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,421 psi | 60% | 2477 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 40,770 psi | 64% | 2484 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 40,654 psi | 64% | 2526 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,019 psi | 39% | 2142 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 92% | 31,894 psi | 50% | 2346 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 82% | 28,224 psi | 44% | 2290 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,140 psi | 80% | 2602 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 40,103 psi | 63% | 2513 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 44,266 psi | 69% | 2487 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 40,654 psi | 64% | 2526 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 39,247 psi | 62% | 2369 fps | 96.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 53,272 psi | 83% | 2612 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,541 psi | 70% | 2493 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 39,885 psi | 63% | 2461 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 82% | 38,957 psi | 61% | 2398 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 98% | 50,212 psi | 79% | 2625 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 52,170 psi | 82% | 2595 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,749 psi | 50% | 2267 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,672 psi | 72% | 2536 fps | 100% |
| Hodgdon Superformance | 59.9 gr | 80% | 35,607 psi | 56% | 2402 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,035 psi | 42% | 1434 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,224 psi | 72% | 2493 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 48,225 psi | 76% | 2510 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,120 psi | 68% | 2431 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 42,482 psi | 67% | 2405 fps | 97.6% |
| IMR 4350 | <<locked>> | 82% | 37,173 psi | 58% | 2349 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,524 psi | 64% | 2395 fps | 97% |
| IMR 4831 | <<locked>> | 80% | 30,501 psi | 48% | 2241 fps | 96.9% |
| IMR 4895 | <<locked>> | 80% | 48,370 psi | 76% | 2562 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 46,934 psi | 74% | 2533 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 96% | 45,571 psi | 71% | 2608 fps | 95.3% |
| IMR 8208 XBR | <<locked>> | 80% | 53,679 psi | 84% | 2582 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,532 psi | 81% | 2559 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,749 psi | 80% | 2516 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,253 psi | 72% | 2480 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,116 psi | 60% | 2352 fps | 97.8% |
| Lovex S070 | <<locked>> | 80% | 36,390 psi | 57% | 2336 fps | 96.2% |
| Lovex S071 | <<locked>> | 92% | 32,039 psi | 50% | 2283 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 50,459 psi | 79% | 2533 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,995 psi | 80% | 2530 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,528 psi | 73% | 2526 fps | 100% |
| Norma 204 | <<locked>> | 86% | 41,713 psi | 65% | 2480 fps | 95.6% |
| Norma MRP | <<locked>> | 88% | 34,983 psi | 55% | 2434 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 34,737 psi | 54% | 2349 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 80% | 46,470 psi | 73% | 2546 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 44,889 psi | 70% | 2608 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 33,634 psi | 53% | 2336 fps | 96% |
| Ramshot Magnum | <<locked>> | 94% | 38,711 psi | 61% | 2470 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 53,534 psi | 84% | 2608 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 53,621 psi | 84% | 2621 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,601 psi | 43% | 1470 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,643 psi | 70% | 2477 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,488 psi | 79% | 2641 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,843 psi | 64% | 2526 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,389 psi | 54% | 2369 fps | 97.8% |
| ReloadSwiss RS 70 | 57.6 gr | 80% | 33,721 psi | 53% | 2375 fps | 97.1% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 37,072 psi | 58% | 2510 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 47,993 psi | 75% | 2487 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,640 psi | 65% | 2438 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 45,658 psi | 72% | 2520 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 90% | 39,755 psi | 62% | 2467 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 39,247 psi | 62% | 2369 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,116 psi | 60% | 2352 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,532 psi | 81% | 2559 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,253 psi | 72% | 2480 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,390 psi | 57% | 2336 fps | 96.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,540 psi | 67% | 2487 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,272 psi | 82% | 2589 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,879 psi | 78% | 2559 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,314 psi | 80% | 2467 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,221 psi | 68% | 2349 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,333 psi | 59% | 2300 fps | 96.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 39,407 psi | 62% | 2464 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 51,126 psi | 80% | 2470 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,040 psi | 82% | 2575 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,090 psi | 66% | 2434 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 49,980 psi | 78% | 2562 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 31,256 psi | 49% | 2313 fps | 99.6% |
| Somchem S385 | <<locked>> | 86% | 35,549 psi | 56% | 2352 fps | 95% |
| Unknown powder | <<locked>> | 80% | 37,565 psi | 59% | 2402 fps | 98.2% |
| Vihtavuori N133 | <<locked>> | 80% | 51,837 psi | 81% | 2454 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,066 psi | 75% | 2454 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,414 psi | 76% | 2470 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,147 psi | 63% | 2372 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,143 psi | 57% | 2349 fps | 98.3% |
| Vihtavuori N165 | <<locked>> | 92% | 37,202 psi | 58% | 2379 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 54,056 psi | 85% | 2579 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,528 psi | 73% | 2464 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,505 psi | 56% | 2352 fps | 98% |
| Vihtavuori N555 | <<locked>> | 80% | 27,093 psi | 42% | 2211 fps | 96.1% |
| Vihtavuori N560 | <<locked>> | 96% | 46,311 psi | 73% | 2644 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,360 psi | 55% | 2323 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 39,885 psi | 63% | 2461 fps | 97.1% |
| Winchester StaBALL HD | <<locked>> | 82% | 23,438 psi | 37% | 2162 fps | 95.4% |
| Winchester Supreme 780 | <<locked>> | 90% | 40,770 psi | 64% | 2454 fps | 95.4% |
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 118 powders for 8 x 68 S loaded with the .323 | 220gr | Woodleigh PP SN. Alliant Reloder-26 delivers the highest muzzle velocity at 2,812 fps; across all powders the maximum-charge window runs from 1,608 fps to 2,812 fps. Accurate 3100 gives the best case fill at 100 %, and 118 of the 118 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 220.0 gr projectile in 0.323" calls for a 1:14.0 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-16 rank at the top here: for 8 x 68 S with the .323 | 220gr | Woodleigh PP SN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2217, ADI AR 2225 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.