Load Specifications
Load data in caliber 8 x 68 S with .323 | 138.9gr | Sax KJG-SR bullet and 94 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 52 and Hodgdon CFE223.
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.
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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>> | 90% | 55,042 psi | 86% | 3176 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 55,347 psi | 87% | 3281 fps | 98.4% |
| Accurate 2230 | <<locked>> | 82% | 56,536 psi | 89% | 3291 fps | 98.8% |
| Accurate 2460 | <<locked>> | 88% | 57,653 psi | 90% | 3258 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 55,695 psi | 87% | 3235 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 55,463 psi | 87% | 3261 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 55,448 psi | 87% | 3278 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 55,303 psi | 87% | 3127 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 55,738 psi | 87% | 3153 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 54,476 psi | 85% | 3264 fps | 98.9% |
| ADI AR 2207 | <<locked>> | 82% | 56,565 psi | 89% | 3150 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 55,608 psi | 87% | 3258 fps | 98.6% |
| ADI AR 2219 | <<locked>> | 84% | 55,985 psi | 88% | 3258 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 57,348 psi | 90% | 3281 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 92% | 57,014 psi | 89% | 3264 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 55,114 psi | 86% | 3343 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 54,201 psi | 85% | 3379 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 54,679 psi | 86% | 3278 fps | 99.5% |
| Alliant Reloder-10x | <<locked>> | 86% | 55,085 psi | 86% | 3196 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 55,579 psi | 87% | 3304 fps | 98.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 44,860 psi | 70% | 3153 fps | 96% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 51,953 psi | 81% | 3333 fps | 99.1% |
| Alliant Reloder-7 | <<locked>> | 82% | 57,566 psi | 90% | 3173 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 54,679 psi | 86% | 3117 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 54,476 psi | 85% | 3274 fps | 98.1% |
| Bofors RP3 | <<locked>> | 98% | 54,911 psi | 86% | 3291 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 90% | 55,970 psi | 88% | 3212 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 92% | 56,420 psi | 88% | 3307 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 88% | 54,259 psi | 85% | 3350 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 86% | 54,375 psi | 85% | 3232 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 55,767 psi | 87% | 3258 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 56,927 psi | 89% | 3307 fps | 97.9% |
| Hodgdon H4198 | <<locked>> | 82% | 57,101 psi | 89% | 3182 fps | 100% |
| Hodgdon H4895 | <<locked>> | 92% | 54,940 psi | 86% | 3281 fps | 99.3% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,799 psi | 64% | 3022 fps | 96.7% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 57,566 psi | 90% | 3369 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,156 psi | 54% | 2001 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 56,695 psi | 89% | 3287 fps | 99.4% |
| IMR 3031 | <<locked>> | 94% | 57,725 psi | 90% | 3330 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 54,926 psi | 86% | 3241 fps | 98.6% |
| IMR 4198 | <<locked>> | 86% | 55,405 psi | 87% | 3153 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 57,029 psi | 89% | 3340 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 92% | 57,348 psi | 90% | 3281 fps | 99.8% |
| Lovex D073.4 | <<locked>> | 82% | 57,246 psi | 90% | 3271 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 57,725 psi | 90% | 3268 fps | 100% |
| Lovex D073.6 | <<locked>> | 94% | 57,246 psi | 90% | 3301 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 54,708 psi | 86% | 3192 fps | 98.9% |
| Lovex S062 | <<locked>> | 98% | 57,595 psi | 90% | 3294 fps | 99.8% |
| Norma 200 | <<locked>> | 82% | 54,621 psi | 86% | 3159 fps | 100% |
| Norma 201 | <<locked>> | 94% | 56,289 psi | 88% | 3261 fps | 99.7% |
| Norma 202 | <<locked>> | 94% | 56,956 psi | 89% | 3274 fps | 100% |
| Norma 203B | <<locked>> | 96% | 54,679 psi | 86% | 3291 fps | 99% |
| Ramshot Big Game | <<locked>> | 96% | 55,477 psi | 87% | 3317 fps | 99% |
| Ramshot TAC | <<locked>> | 90% | 54,578 psi | 86% | 3225 fps | 96.8% |
| Ramshot Wild Boar | <<locked>> | 92% | 57,363 psi | 90% | 3314 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 88% | 55,216 psi | 87% | 3219 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,447 psi | 54% | 2047 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 57,130 psi | 90% | 3271 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 57,595 psi | 90% | 3281 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 55,448 psi | 87% | 3373 fps | 98.7% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 55,593 psi | 87% | 3415 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 57,188 psi | 90% | 3255 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 56,826 psi | 89% | 3261 fps | 99.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 54,462 psi | 85% | 3274 fps | 99.4% |
| Shooters World AR Plus | <<locked>> | 82% | 57,246 psi | 90% | 3271 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 94% | 57,246 psi | 90% | 3301 fps | 100% |
| Shooters World Precision | <<locked>> | 98% | 57,595 psi | 90% | 3294 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 57,290 psi | 90% | 3235 fps | 99.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 55,535 psi | 87% | 2864 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 56,318 psi | 88% | 3264 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 57,130 psi | 90% | 3350 fps | 99.2% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 56,144 psi | 88% | 3219 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 56,246 psi | 88% | 3258 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 56,478 psi | 89% | 3291 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 55,405 psi | 87% | 3163 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 55,187 psi | 86% | 3153 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 55,230 psi | 87% | 3261 fps | 99.8% |
| Somchem S335 | <<locked>> | 94% | 57,580 psi | 90% | 3202 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 55,709 psi | 87% | 3255 fps | 99% |
| Somchem S355ᴾ | <<locked>> | 100% | 55,361 psi | 87% | 3281 fps | 99.3% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,697 psi | 62% | 3071 fps | 97.9% |
| Vihtavuori N120 | <<locked>> | 82% | 56,405 psi | 88% | 3094 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 54,998 psi | 86% | 3133 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 55,303 psi | 87% | 3150 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 55,680 psi | 87% | 3228 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 54,114 psi | 85% | 3196 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 53,519 psi | 84% | 3205 fps | 99.8% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 47,340 psi | 74% | 3146 fps | 96.3% |
| Vihtavuori N530 | <<locked>> | 90% | 54,476 psi | 85% | 3222 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 96% | 55,753 psi | 87% | 3241 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 46,311 psi | 73% | 3143 fps | 95.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 48,834 psi | 77% | 3133 fps | 98.6% |
| Winchester 748 | <<locked>> | 92% | 57,421 psi | 90% | 3333 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 56,420 psi | 88% | 3301 fps | 99.5% |
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 2015 | <<locked>> | 80% | 39,900 psi | 63% | 2913 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 51,750 psi | 81% | 3215 fps | 97.8% |
| Accurate 2230 | <<locked>> | 80% | 52,591 psi | 82% | 3225 fps | 98.2% |
| Accurate 2460 | <<locked>> | 80% | 43,627 psi | 68% | 3018 fps | 99.5% |
| Accurate 2495 | <<locked>> | 80% | 32,010 psi | 50% | 2782 fps | 99.5% |
| Accurate 2520 | <<locked>> | 80% | 38,812 psi | 61% | 2953 fps | 98.6% |
| Accurate 4064 | <<locked>> | 80% | 30,284 psi | 47% | 2749 fps | 97.2% |
| Accurate LT-30 | <<locked>> | 80% | 48,805 psi | 76% | 3022 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 49,168 psi | 77% | 3045 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 39,378 psi | 62% | 2959 fps | 95.7% |
| ADI AR 2207 | <<locked>> | 80% | 53,156 psi | 83% | 3104 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 40,596 psi | 64% | 2963 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 48,733 psi | 76% | 3140 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,928 psi | 61% | 2923 fps | 97% |
| Alliant AR-Comp | <<locked>> | 80% | 37,507 psi | 59% | 2940 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,962 psi | 70% | 3146 fps | 97.8% |
| Alliant Power Pro 2000-MR | 65.7 gr | 88% | 43,903 psi | 69% | 3163 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 34,490 psi | 54% | 2861 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 45,484 psi | 71% | 3035 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 40,045 psi | 63% | 2995 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 98% | 42,061 psi | 66% | 3087 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 90% | 36,912 psi | 58% | 2992 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 53,969 psi | 85% | 3117 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 47,819 psi | 75% | 3005 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 41,336 psi | 65% | 3018 fps | 95.1% |
| Bofors RP3 | <<locked>> | 84% | 33,736 psi | 53% | 2851 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,973 psi | 64% | 2927 fps | 98.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,840 psi | 58% | 2923 fps | 97.1% |
| Hodgdon CFE223 | 61.1 gr | 80% | 40,625 psi | 64% | 3068 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 80% | 44,396 psi | 70% | 3058 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 45,223 psi | 71% | 3077 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 92% | 46,325 psi | 73% | 3114 fps | 95.7% |
| Hodgdon H4198 | <<locked>> | 80% | 53,737 psi | 84% | 3130 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 37,130 psi | 58% | 2910 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 38,130 psi | 60% | 2959 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 35,447 psi | 56% | 2920 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,266 psi | 40% | 1791 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,839 psi | 56% | 2861 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 35,839 psi | 56% | 2927 fps | 99.6% |
| IMR 4064 | <<locked>> | 86% | 39,856 psi | 62% | 2943 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 46,383 psi | 73% | 3009 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 38,363 psi | 60% | 2969 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 38,928 psi | 61% | 2923 fps | 97% |
| Lovex D073.4 | <<locked>> | 80% | 53,301 psi | 84% | 3209 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 80% | 43,497 psi | 68% | 3018 fps | 98.8% |
| Lovex D073.6 | <<locked>> | 80% | 34,954 psi | 55% | 2871 fps | 97.6% |
| Lovex S060 | <<locked>> | 80% | 37,652 psi | 59% | 2844 fps | 95.2% |
| Lovex S062 | <<locked>> | 82% | 34,490 psi | 54% | 2828 fps | 95.7% |
| Norma 200 | <<locked>> | 80% | 51,126 psi | 80% | 3107 fps | 100% |
| Norma 201 | <<locked>> | 80% | 35,810 psi | 56% | 2848 fps | 96.1% |
| Norma 202 | <<locked>> | 80% | 36,100 psi | 57% | 2877 fps | 98.5% |
| Norma 203B | <<locked>> | 86% | 39,349 psi | 62% | 2982 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 86% | 39,117 psi | 61% | 2992 fps | 95.4% |
| Ramshot TAC | <<locked>> | 86% | 47,747 psi | 75% | 3100 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,869 psi | 59% | 2930 fps | 95.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,221 psi | 66% | 2972 fps | 96.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,454 psi | 40% | 1834 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,859 psi | 69% | 3035 fps | 99.2% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 54,012 psi | 85% | 3219 fps | 95.7% |
| ReloadSwiss RS 52 | 62.2 gr | 86% | 41,626 psi | 65% | 3104 fps | 95.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 32,198 psi | 50% | 2867 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 39,479 psi | 62% | 2923 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 80% | 34,171 psi | 54% | 2795 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 88% | 36,230 psi | 57% | 2907 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 53,301 psi | 84% | 3209 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,954 psi | 55% | 2871 fps | 97.6% |
| Shooters World Precision | <<locked>> | 82% | 34,490 psi | 54% | 2828 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 46,383 psi | 73% | 3045 fps | 98.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 52,533 psi | 82% | 2825 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 49,110 psi | 77% | 3143 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 38,043 psi | 60% | 2972 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 46,253 psi | 72% | 3054 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 45,455 psi | 71% | 3061 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 37,855 psi | 59% | 2917 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,681 psi | 59% | 2831 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,792 psi | 48% | 2671 fps | 98% |
| Somchem S321 | <<locked>> | 80% | 41,698 psi | 65% | 3005 fps | 98% |
| Somchem S335 | <<locked>> | 80% | 37,086 psi | 58% | 2831 fps | 99.2% |
| Somchem S341 | <<locked>> | 82% | 39,088 psi | 61% | 2933 fps | 95.5% |
| Somchem S355 | <<locked>> | 88% | 37,376 psi | 59% | 2920 fps | 95.7% |
| Somchem S365 | <<locked>> | 94% | 32,518 psi | 51% | 2877 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 53,055 psi | 83% | 3045 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 42,902 psi | 67% | 2930 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,811 psi | 59% | 2838 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 32,880 psi | 52% | 2799 fps | 99.6% |
| Vihtavuori N140 | <<locked>> | 80% | 34,127 psi | 53% | 2802 fps | 98.3% |
| Vihtavuori N150 | <<locked>> | 84% | 31,169 psi | 49% | 2733 fps | 95% |
| Vihtavuori N160 | <<locked>> | 98% | 44,251 psi | 69% | 3081 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 38,769 psi | 61% | 2917 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 80% | 32,750 psi | 51% | 2776 fps | 97.4% |
| Vihtavuori N550 | <<locked>> | 98% | 43,366 psi | 68% | 3084 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 37,188 psi | 58% | 2881 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 37,695 psi | 59% | 2953 fps | 97.6% |
| Winchester StaBALL Match | <<locked>> | 82% | 37,130 psi | 58% | 2920 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 94 powders for 8 x 68 S loaded with the .323 | 138.9gr | Sax KJG-SR. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,415 fps; across all powders the maximum-charge window runs from 2,001 fps to 3,415 fps. Alliant Reloder-16 gives the best case fill at 100 %, and 94 of the 94 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 138.9 gr projectile in 0.323" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-16, Alliant Reloder-17, Hodgdon Hybrid 100V 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 52, Hodgdon CFE223 rank at the top here: for 8 x 68 S with the .323 | 138.9gr | Sax KJG-SR 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.