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:1:15.5
Load data in caliber 8 x 68 S with .323 | 220gr | Woodleigh RN SN bullet and 106 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 70 and Alliant Reloder-26.
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% | 56,927 psi | 89% | 2579 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,621 psi | 86% | 2605 fps | 99.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,314 psi | 80% | 2644 fps | 99.7% |
| Accurate 4064 | <<locked>> | 86% | 57,029 psi | 89% | 2631 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 53,925 psi | 85% | 2690 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 53,200 psi | 83% | 2776 fps | 96.5% |
| ADI AR 2206H | <<locked>> | 82% | 56,072 psi | 88% | 2657 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,174 psi | 90% | 2664 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,940 psi | 86% | 2733 fps | 98.7% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 52,518 psi | 82% | 2726 fps | 97.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,420 psi | 88% | 2785 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,404 psi | 85% | 2638 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,723 psi | 86% | 2661 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,766 psi | 86% | 2743 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,753 psi | 87% | 2762 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 57,580 psi | 90% | 2772 fps | 99.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,155 psi | 80% | 2726 fps | 98.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,196 psi | 76% | 2661 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,279 psi | 66% | 2598 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,100 psi | 86% | 2844 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,101 psi | 88% | 2680 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 46,963 psi | 74% | 2654 fps | 97.5% |
| Bofors RP3 | <<locked>> | 86% | 55,347 psi | 87% | 2657 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,155 psi | 80% | 2726 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 54,636 psi | 86% | 2644 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 86% | 55,651 psi | 87% | 2674 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 56,043 psi | 88% | 2740 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 90% | 56,202 psi | 88% | 2703 fps | 99% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 56,202 psi | 88% | 2726 fps | 97.2% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 55,158 psi | 86% | 2710 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 82% | 56,681 psi | 89% | 2664 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,955 psi | 86% | 2667 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 56,884 psi | 89% | 2703 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 41,249 psi | 65% | 2621 fps | 96.6% |
| Hodgdon Superformance | <<locked>> | 92% | 56,275 psi | 88% | 2782 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,347 psi | 57% | 1621 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 57,696 psi | 90% | 2664 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 57,435 psi | 90% | 2638 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,826 psi | 89% | 2648 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,999 psi | 88% | 2638 fps | 99.6% |
| IMR 4350 | <<locked>> | 94% | 55,405 psi | 87% | 2677 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,275 psi | 88% | 2667 fps | 99.6% |
| IMR 4831 | <<locked>> | 94% | 54,201 psi | 85% | 2680 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,101 psi | 88% | 2684 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 54,520 psi | 85% | 2667 fps | 97.1% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 49,864 psi | 78% | 2697 fps | 96.8% |
| Lovex D073.6 | <<locked>> | 82% | 56,608 psi | 89% | 2635 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,071 psi | 86% | 2585 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,956 psi | 89% | 2641 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,347 psi | 88% | 2664 fps | 100% |
| Lovex S070 | <<locked>> | 94% | 57,667 psi | 90% | 2707 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,873 psi | 67% | 2510 fps | 98.7% |
| Norma 201 | <<locked>> | 82% | 54,897 psi | 86% | 2605 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,521 psi | 87% | 2598 fps | 100% |
| Norma 203B | <<locked>> | 86% | 57,508 psi | 90% | 2694 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,173 psi | 88% | 2726 fps | 98.7% |
| Norma MRPᴾ | <<locked>> | 100% | 54,317 psi | 85% | 2805 fps | 99.6% |
| Norma URP | <<locked>> | 94% | 56,318 psi | 88% | 2726 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 54,607 psi | 86% | 2674 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 50,169 psi | 79% | 2713 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 94% | 54,911 psi | 86% | 2730 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 44,556 psi | 70% | 2595 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,898 psi | 58% | 1657 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,608 psi | 87% | 2661 fps | 99.8% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,695 psi | 87% | 2723 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,506 psi | 87% | 2756 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 57,392 psi | 90% | 2762 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,869 psi | 88% | 2792 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 40,915 psi | 64% | 2612 fps | 97.6% |
| Rottweil R 902 | <<locked>> | 84% | 55,492 psi | 87% | 2605 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,216 psi | 87% | 2651 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 56,739 psi | 89% | 2703 fps | 98% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,869 psi | 89% | 2759 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 90% | 54,636 psi | 86% | 2644 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,347 psi | 88% | 2664 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,608 psi | 89% | 2635 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,956 psi | 89% | 2641 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 57,667 psi | 90% | 2707 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,855 psi | 89% | 2710 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 57,392 psi | 90% | 2671 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,549 psi | 85% | 2635 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,680 psi | 87% | 2533 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,594 psi | 89% | 2539 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,101 psi | 88% | 2621 fps | 99.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 56,362 psi | 88% | 2756 fps | 99% |
| Somchem S335 | <<locked>> | 82% | 55,448 psi | 87% | 2536 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,072 psi | 89% | 2654 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,347 psi | 87% | 2648 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 54,810 psi | 86% | 2648 fps | 96.9% |
| Somchem S365 | <<locked>> | 96% | 55,274 psi | 87% | 2726 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 57,551 psi | 90% | 2736 fps | 99.5% |
| Vihtavuori N133 | <<locked>> | 82% | 56,159 psi | 88% | 2516 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,956 psi | 88% | 2562 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,101 psi | 88% | 2579 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,550 psi | 89% | 2621 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,911 psi | 86% | 2671 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,632 psi | 78% | 2608 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 86% | 57,711 psi | 90% | 2625 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 57,508 psi | 90% | 2726 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,128 psi | 85% | 2733 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 54,766 psi | 86% | 2795 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,288 psi | 85% | 2641 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 56,318 psi | 88% | 2743 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,468 psi | 68% | 2717 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,505 psi | 85% | 2641 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,998 psi | 85% | 2680 fps | 98.5% |
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% | 49,908 psi | 78% | 2490 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,964 psi | 75% | 2503 fps | 98.2% |
| Accurate 3100 | <<locked>> | 86% | 32,068 psi | 50% | 2290 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 47,239 psi | 74% | 2500 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,737 psi | 56% | 2382 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 98% | 49,545 psi | 78% | 2717 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 52,649 psi | 83% | 2612 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,802 psi | 70% | 2480 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 39,871 psi | 62% | 2470 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 96% | 46,035 psi | 72% | 2615 fps | 95.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,211 psi | 77% | 2680 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,136 psi | 71% | 2500 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,153 psi | 75% | 2562 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,172 psi | 55% | 2395 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,668 psi | 62% | 2510 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 39,392 psi | 62% | 2464 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 92% | 39,407 psi | 62% | 2510 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,686 psi | 40% | 2172 fps | 96.6% |
| Alliant Reloder-25 | <<locked>> | 90% | 30,966 psi | 49% | 2333 fps | 95.7% |
| Alliant Reloder-26 | 61.2 gr | 82% | 29,109 psi | 46% | 2326 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,475 psi | 82% | 2631 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 38,885 psi | 61% | 2497 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 45,513 psi | 71% | 2516 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 39,407 psi | 62% | 2510 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 40,118 psi | 63% | 2395 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 80% | 45,890 psi | 72% | 2526 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 37,811 psi | 59% | 2428 fps | 96.7% |
| Hodgdon H4350 | <<locked>> | 80% | 40,930 psi | 64% | 2448 fps | 96.1% |
| Hodgdon H4831 | <<locked>> | 94% | 46,093 psi | 72% | 2566 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 96% | 48,312 psi | 76% | 2605 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 53,214 psi | 83% | 2618 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,634 psi | 51% | 2293 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,835 psi | 78% | 2608 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 38,725 psi | 61% | 2562 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 36,738 psi | 58% | 2434 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,122 psi | 43% | 1444 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,068 psi | 80% | 2575 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 54,012 psi | 85% | 2595 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,123 psi | 74% | 2510 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,429 psi | 77% | 2536 fps | 98.9% |
| IMR 4350 | <<locked>> | 80% | 35,781 psi | 56% | 2329 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,539 psi | 65% | 2425 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 34,577 psi | 54% | 2343 fps | 98.3% |
| IMR 4895 | <<locked>> | 80% | 49,400 psi | 77% | 2589 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 45,150 psi | 71% | 2513 fps | 95% |
| IMR 7828 SSC | <<locked>> | 96% | 43,700 psi | 68% | 2585 fps | 95% |
| Lovex D073.6 | <<locked>> | 80% | 52,837 psi | 83% | 2585 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,706 psi | 81% | 2539 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,282 psi | 74% | 2507 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,001 psi | 61% | 2379 fps | 98.1% |
| Lovex S070 | <<locked>> | 80% | 37,246 psi | 58% | 2362 fps | 96.7% |
| Lovex S071 | <<locked>> | 90% | 31,154 psi | 49% | 2270 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 51,517 psi | 81% | 2556 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,098 psi | 82% | 2556 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,529 psi | 74% | 2552 fps | 100% |
| Norma 204 | <<locked>> | 84% | 40,118 psi | 63% | 2457 fps | 95.3% |
| Norma MRP | <<locked>> | 88% | 36,114 psi | 57% | 2470 fps | 96% |
| Norma URP | <<locked>> | 80% | 35,665 psi | 56% | 2379 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 80% | 47,848 psi | 75% | 2575 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 43,555 psi | 68% | 2595 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 34,693 psi | 54% | 2369 fps | 96.6% |
| Ramshot Magnum | <<locked>> | 96% | 38,696 psi | 61% | 2484 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,688 psi | 43% | 1483 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,919 psi | 72% | 2510 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,112 psi | 82% | 2674 fps | 100% |
| ReloadSwiss RS 60 | 58.3 gr | 80% | 42,177 psi | 66% | 2559 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,462 psi | 56% | 2402 fps | 98.3% |
| ReloadSwiss RS 70 | 59.2 gr | 80% | 34,708 psi | 54% | 2408 fps | 97.7% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 35,694 psi | 56% | 2487 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 49,284 psi | 77% | 2516 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,670 psi | 67% | 2461 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 44,005 psi | 69% | 2500 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 88% | 38,276 psi | 60% | 2448 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 40,118 psi | 63% | 2395 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,001 psi | 61% | 2379 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,837 psi | 83% | 2585 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,282 psi | 74% | 2507 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,246 psi | 58% | 2362 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,874 psi | 69% | 2516 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 53,635 psi | 84% | 2618 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,271 psi | 80% | 2589 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,417 psi | 82% | 2490 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,222 psi | 69% | 2375 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,305 psi | 60% | 2329 fps | 96.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 37,913 psi | 59% | 2441 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 52,098 psi | 82% | 2493 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,388 psi | 84% | 2605 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,076 psi | 68% | 2461 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 47,979 psi | 75% | 2543 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 32,169 psi | 50% | 2339 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 36,622 psi | 57% | 2385 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 52,953 psi | 83% | 2474 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,255 psi | 77% | 2477 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,429 psi | 77% | 2493 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,089 psi | 64% | 2395 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,057 psi | 58% | 2375 fps | 98.7% |
| Vihtavuori N165 | <<locked>> | 92% | 38,334 psi | 60% | 2411 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 47,877 psi | 75% | 2493 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,680 psi | 57% | 2382 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 80% | 28,123 psi | 44% | 2244 fps | 96.8% |
| Vihtavuori N560 | <<locked>> | 94% | 44,686 psi | 70% | 2625 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,347 psi | 57% | 2352 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 38,000 psi | 60% | 2431 fps | 96.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 22,727 psi | 36% | 2142 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,169 psi | 80% | 2595 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 40,944 psi | 64% | 2467 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 106 powders for 8 x 68 S loaded with the .323 | 220gr | Woodleigh RN SN. Alliant Reloder-26 delivers the highest muzzle velocity at 2,844 fps; across all powders the maximum-charge window runs from 1,621 fps to 2,844 fps. Accurate 3100 gives the best case fill at 100 %, and 106 of the 106 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 1:15.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, 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 60, ReloadSwiss RS 70, Alliant Reloder-26 rank at the top here: for 8 x 68 S with the .323 | 220gr | Woodleigh RN SN 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.