Load Specifications
Load data in caliber 8 x 65 RS with .323 | 220gr | Barnes Solid RN bullet and 96 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, 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.
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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>> | 84% | 52,257 psi | 89% | 2388 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 50,183 psi | 85% | 2411 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 51,866 psi | 88% | 2467 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 53,069 psi | 90% | 2451 fps | 97.1% |
| Accurate 4064 | <<locked>> | 90% | 50,256 psi | 86% | 2454 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 52,634 psi | 90% | 2569 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 86% | 50,995 psi | 87% | 2477 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 51,953 psi | 88% | 2477 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 50,488 psi | 86% | 2438 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 50,705 psi | 86% | 2415 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 50,299 psi | 86% | 2582 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 51,721 psi | 88% | 2500 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 52,257 psi | 89% | 2516 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,879 psi | 87% | 2569 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 96% | 51,721 psi | 88% | 2605 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,289 psi | 62% | 2346 fps | 98.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 39,856 psi | 68% | 2474 fps | 97.6% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 50,502 psi | 86% | 2493 fps | 99.6% |
| Bofors RP3 | <<locked>> | 92% | 52,098 psi | 89% | 2513 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 52,475 psi | 89% | 2484 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 52,373 psi | 89% | 2425 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 52,518 psi | 89% | 2510 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 50,749 psi | 86% | 2546 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 92% | 53,156 psi | 90% | 2523 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 98% | 52,257 psi | 89% | 2569 fps | 98% |
| Hodgdon H4350 | <<locked>> | 94% | 50,227 psi | 86% | 2487 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 86% | 51,445 psi | 88% | 2487 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,166 psi | 80% | 2464 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 50,502 psi | 86% | 2520 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 53,011 psi | 90% | 2602 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,244 psi | 60% | 1496 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 52,852 psi | 90% | 2490 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 51,387 psi | 87% | 2470 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 51,648 psi | 88% | 2464 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 88% | 51,837 psi | 88% | 2444 fps | 97.7% |
| IMR 4350ᴾ | <<locked>> | 100% | 52,489 psi | 89% | 2507 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 94% | 51,329 psi | 87% | 2470 fps | 97.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,719 psi | 85% | 2513 fps | 99.5% |
| IMR 4895 | <<locked>> | 88% | 50,299 psi | 86% | 2497 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 50,488 psi | 86% | 2438 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 50,473 psi | 86% | 2457 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 51,213 psi | 87% | 2418 fps | 99.9% |
| Lovex S062 | <<locked>> | 90% | 51,314 psi | 87% | 2461 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 50,227 psi | 86% | 2461 fps | 98.6% |
| Lovex S070 | <<locked>> | 98% | 50,981 psi | 87% | 2490 fps | 97.9% |
| Norma 201 | <<locked>> | 86% | 49,980 psi | 85% | 2431 fps | 100% |
| Norma 202 | <<locked>> | 86% | 50,488 psi | 86% | 2434 fps | 100% |
| Norma 203B | <<locked>> | 90% | 51,503 psi | 88% | 2507 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 52,779 psi | 90% | 2546 fps | 96.1% |
| Norma URPᴾ | <<locked>> | 100% | 51,938 psi | 88% | 2559 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 90% | 51,663 psi | 88% | 2530 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 50,662 psi | 86% | 2556 fps | 98.5% |
| Ramshot TAC | <<locked>> | 84% | 50,328 psi | 86% | 2451 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 86% | 53,040 psi | 90% | 2513 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 51,155 psi | 87% | 2438 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,810 psi | 61% | 1532 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 52,953 psi | 90% | 2461 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 50,270 psi | 86% | 2461 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 52,402 psi | 89% | 2575 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 51,750 psi | 88% | 2605 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 52,083 psi | 89% | 2589 fps | 99.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 52,330 psi | 89% | 2615 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 84% | 51,329 psi | 87% | 2415 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 50,488 psi | 86% | 2428 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 51,692 psi | 88% | 2500 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 52,475 psi | 89% | 2484 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 96% | 50,227 psi | 86% | 2461 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 86% | 50,473 psi | 86% | 2457 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 51,314 psi | 87% | 2461 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 50,981 psi | 87% | 2490 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 49,995 psi | 85% | 2513 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 52,156 psi | 89% | 2480 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 52,794 psi | 90% | 2500 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 51,779 psi | 88% | 2379 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 51,634 psi | 88% | 2379 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 50,517 psi | 86% | 2418 fps | 97.5% |
| Somchem S321 | <<locked>> | 82% | 51,271 psi | 87% | 2467 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 50,995 psi | 87% | 2379 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 51,561 psi | 88% | 2470 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 52,446 psi | 89% | 2503 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,383 psi | 79% | 2516 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 51,866 psi | 88% | 2346 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 51,967 psi | 88% | 2365 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 49,864 psi | 85% | 2398 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 50,807 psi | 86% | 2415 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 50,270 psi | 86% | 2441 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 51,140 psi | 87% | 2510 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 84% | 50,763 psi | 86% | 2438 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 52,243 psi | 89% | 2457 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 49,966 psi | 85% | 2513 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,030 psi | 66% | 2408 fps | 98.5% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 51,459 psi | 88% | 2493 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 50,169 psi | 85% | 2477 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 52,257 psi | 89% | 2569 fps | 98% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,242 psi | 55% | 2336 fps | 98.2% |
| Winchester StaBALL Match | <<locked>> | 88% | 52,315 psi | 89% | 2507 fps | 100% |
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% | 46,166 psi | 79% | 2310 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,653 psi | 66% | 2247 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,266 psi | 77% | 2375 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 43,714 psi | 74% | 2310 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 36,593 psi | 62% | 2244 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 30,429 psi | 52% | 2182 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 42,467 psi | 72% | 2343 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 80% | 36,114 psi | 61% | 2211 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,483 psi | 76% | 2349 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 44,483 psi | 76% | 2336 fps | 100% |
| Alliant Power Pro 2000-MR | 46.3 gr | 80% | 38,247 psi | 65% | 2369 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,592 psi | 61% | 2234 fps | 98.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,276 psi | 65% | 2290 fps | 98.2% |
| Alliant Reloder-16 | <<locked>> | 84% | 31,444 psi | 54% | 2195 fps | 95.2% |
| Alliant Reloder-17 | 45.6 gr | 80% | 30,574 psi | 52% | 2205 fps | 96.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 28,514 psi | 49% | 2156 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 34,882 psi | 59% | 2365 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,394 psi | 70% | 2346 fps | 98.4% |
| Bofors RP3 | <<locked>> | 80% | 35,070 psi | 60% | 2238 fps | 98.8% |
| Bofors RP7 | <<locked>> | 90% | 43,627 psi | 74% | 2346 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,253 psi | 79% | 2336 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,917 psi | 73% | 2369 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,239 psi | 80% | 2493 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 80% | 35,882 psi | 61% | 2234 fps | 96.3% |
| Hodgdon H414 | <<locked>> | 90% | 40,205 psi | 68% | 2372 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 92% | 47,108 psi | 80% | 2438 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 42,830 psi | 73% | 2352 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 26,934 psi | 46% | 2057 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,566 psi | 66% | 2329 fps | 99.4% |
| Hodgdon Superformance | 55.4 gr | 92% | 42,772 psi | 73% | 2434 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,382 psi | 45% | 1335 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,002 psi | 70% | 2310 fps | 99.4% |
| IMR 3031 | <<locked>> | 80% | 42,177 psi | 72% | 2343 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,898 psi | 65% | 2241 fps | 98.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 40,408 psi | 69% | 2257 fps | 95.1% |
| IMR 4350 | <<locked>> | 94% | 43,453 psi | 74% | 2369 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 42,888 psi | 73% | 2333 fps | 95.7% |
| IMR 4831 | <<locked>> | 86% | 31,604 psi | 54% | 2192 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 39,146 psi | 67% | 2313 fps | 98.9% |
| IMR 8208 XBR | <<locked>> | 80% | 44,483 psi | 76% | 2349 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 41,249 psi | 70% | 2323 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 42,728 psi | 73% | 2287 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 37,768 psi | 64% | 2247 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 35,099 psi | 60% | 2195 fps | 95% |
| Lovex S070 | <<locked>> | 90% | 39,842 psi | 68% | 2310 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 41,524 psi | 71% | 2300 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 41,858 psi | 71% | 2310 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,637 psi | 64% | 2277 fps | 98.5% |
| Norma 204 | <<locked>> | 98% | 49,472 psi | 84% | 2500 fps | 95.4% |
| Norma URP | <<locked>> | 84% | 31,169 psi | 53% | 2185 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 36,898 psi | 63% | 2287 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 90% | 36,854 psi | 63% | 2313 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 44,338 psi | 75% | 2356 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,729 psi | 74% | 2375 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,877 psi | 82% | 2392 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,513 psi | 45% | 1365 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,719 psi | 85% | 2415 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 38,972 psi | 66% | 2270 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,755 psi | 68% | 2375 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 32,561 psi | 55% | 2264 fps | 99.5% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 32,445 psi | 55% | 2244 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 35,186 psi | 60% | 2300 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 45,513 psi | 77% | 2333 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,552 psi | 67% | 2257 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 32,924 psi | 56% | 2185 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 43,627 psi | 74% | 2346 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 84% | 35,099 psi | 60% | 2195 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,249 psi | 70% | 2323 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 37,768 psi | 64% | 2247 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 90% | 39,842 psi | 68% | 2310 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,895 psi | 58% | 2231 fps | 97.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,569 psi | 72% | 2333 fps | 97.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,901 psi | 70% | 2316 fps | 99% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,047 psi | 73% | 2254 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,665 psi | 61% | 2142 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 41,452 psi | 71% | 2280 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 47,877 psi | 82% | 2418 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 42,525 psi | 72% | 2257 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,177 psi | 72% | 2329 fps | 99.2% |
| Somchem S355 | <<locked>> | 80% | 33,866 psi | 58% | 2192 fps | 98% |
| Somchem S365 | <<locked>> | 80% | 24,482 psi | 42% | 2044 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 48,646 psi | 83% | 2306 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,308 psi | 74% | 2251 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,841 psi | 66% | 2241 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,494 psi | 67% | 2251 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,184 psi | 55% | 2139 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 84% | 32,634 psi | 56% | 2188 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 44,599 psi | 76% | 2346 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 37,956 psi | 65% | 2244 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 31,981 psi | 54% | 2188 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 92% | 30,211 psi | 51% | 2221 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,674 psi | 49% | 2073 fps | 96.1% |
| Winchester 748 | <<locked>> | 80% | 43,801 psi | 75% | 2385 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 40,422 psi | 69% | 2375 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 96% | 28,558 psi | 49% | 2224 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,103 psi | 68% | 2320 fps | 99.3% |
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 96 powders for 8 x 65 RS loaded with the .323 | 220gr | Barnes Solid RN. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,615 fps; across all powders the maximum-charge window runs from 1,496 fps to 2,615 fps. Accurate 4350 gives the best case fill at 100 %, and 96 of the 96 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 55–90 %, 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 4350, Alliant Reloder-16, Alliant Reloder-23 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for 8 x 65 RS 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.