Load Specifications
Load data in caliber 8 x 50 R with .323 | 200gr | Impala RNFP KO bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 52, Hodgdon CFE223 and Ramshot Big Game.
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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Max Load - Barrel Length: 29"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 88% | 45,223 psi | 88% | 2320 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 46,325 psi | 90% | 2369 fps | 99.8% |
| Accurate 2495 | <<locked>> | 94% | 44,063 psi | 86% | 2365 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 46,079 psi | 89% | 2408 fps | 99.7% |
| Accurate 4064 | <<locked>> | 98% | 46,325 psi | 90% | 2431 fps | 100% |
| Accurate LT-30 | <<locked>> | 82% | 46,296 psi | 90% | 2270 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 46,514 psi | 90% | 2411 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 96% | 44,179 psi | 86% | 2352 fps | 96.5% |
| ADI AR 2219 | <<locked>> | 82% | 44,643 psi | 87% | 2365 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 45,890 psi | 89% | 2375 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 90% | 43,845 psi | 85% | 2375 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 46,586 psi | 90% | 2457 fps | 98.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 45,310 psi | 88% | 2470 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 44,933 psi | 87% | 2415 fps | 98.4% |
| Alliant Reloder-10x | <<locked>> | 84% | 45,542 psi | 88% | 2329 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 46,398 psi | 90% | 2434 fps | 97.3% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 42,960 psi | 83% | 2441 fps | 97.2% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 44,411 psi | 86% | 2267 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 45,266 psi | 88% | 2408 fps | 96.3% |
| Bofors RP3 | <<locked>> | 98% | 44,831 psi | 87% | 2428 fps | 98.5% |
| Hodgdon Benchmark | <<locked>> | 88% | 46,122 psi | 90% | 2333 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 92% | 46,499 psi | 90% | 2444 fps | 99.3% |
| Hodgdon CFE223 | <<locked>> | 88% | 45,179 psi | 88% | 2461 fps | 97% |
| Hodgdon H322 | <<locked>> | 86% | 46,311 psi | 90% | 2388 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 44,048 psi | 86% | 2365 fps | 99.8% |
| Hodgdon H4895 | <<locked>> | 90% | 43,787 psi | 85% | 2375 fps | 97.9% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 44,469 psi | 86% | 2434 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,040 psi | 66% | 1444 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 44,860 psi | 87% | 2375 fps | 97.9% |
| IMR 3031 | <<locked>> | 92% | 44,570 psi | 87% | 2418 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 46,311 psi | 90% | 2382 fps | 97.2% |
| IMR 4198 | <<locked>> | 84% | 46,093 psi | 90% | 2293 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 44,701 psi | 87% | 2421 fps | 97.7% |
| IMR 8208 XBR | <<locked>> | 90% | 45,890 psi | 89% | 2375 fps | 98.7% |
| Lovex D073.5 | <<locked>> | 86% | 46,050 psi | 89% | 2372 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 92% | 44,208 psi | 86% | 2395 fps | 99.6% |
| Lovex S060 | <<locked>> | 90% | 44,875 psi | 87% | 2310 fps | 97.4% |
| Lovex S062 | <<locked>> | 96% | 45,803 psi | 89% | 2392 fps | 98.8% |
| Norma 201 | <<locked>> | 92% | 45,701 psi | 89% | 2369 fps | 98.8% |
| Norma 202 | <<locked>> | 92% | 45,107 psi | 88% | 2382 fps | 99.9% |
| Norma 203B | <<locked>> | 96% | 45,527 psi | 88% | 2425 fps | 97.7% |
| Ramshot Big Game | <<locked>> | 96% | 45,484 psi | 88% | 2434 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 90% | 44,933 psi | 87% | 2398 fps | 97.5% |
| Ramshot X-Terminator | <<locked>> | 86% | 44,817 psi | 87% | 2336 fps | 97.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,403 psi | 67% | 1480 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 45,948 psi | 89% | 2372 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 45,179 psi | 88% | 2474 fps | 97.1% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 45,687 psi | 89% | 2503 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 88% | 45,136 psi | 88% | 2336 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 94% | 46,064 psi | 89% | 2365 fps | 98.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 44,715 psi | 87% | 2415 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 92% | 44,208 psi | 86% | 2395 fps | 99.6% |
| Shooters World Precision | <<locked>> | 96% | 45,803 psi | 89% | 2392 fps | 98.8% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 45,890 psi | 89% | 2336 fps | 98.4% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 45,237 psi | 88% | 2372 fps | 99.8% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 46,586 psi | 90% | 2461 fps | 97.7% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 45,513 psi | 88% | 2329 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 44,643 psi | 87% | 2382 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 45,223 psi | 88% | 2293 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 46,340 psi | 90% | 2326 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 43,787 psi | 85% | 2365 fps | 98.7% |
| Somchem S335 | <<locked>> | 90% | 44,338 psi | 86% | 2300 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 46,079 psi | 89% | 2392 fps | 97.5% |
| Somchem S355ᴾ | <<locked>> | 100% | 45,847 psi | 89% | 2418 fps | 98.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 33,663 psi | 65% | 2264 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 86% | 45,513 psi | 88% | 2283 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 44,672 psi | 87% | 2290 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 46,557 psi | 90% | 2392 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 45,571 psi | 89% | 2365 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 44,222 psi | 86% | 2365 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 90% | 46,137 psi | 90% | 2372 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 96% | 46,441 psi | 90% | 2402 fps | 99.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 40,930 psi | 79% | 2300 fps | 96.5% |
| Winchester 748 | <<locked>> | 90% | 44,570 psi | 87% | 2415 fps | 99.2% |
| Winchester StaBALL Match | <<locked>> | 94% | 46,209 psi | 90% | 2428 fps | 98.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 29"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 36,027 psi | 70% | 2169 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 38,421 psi | 75% | 2241 fps | 99.1% |
| Accurate 2495 | <<locked>> | 80% | 29,428 psi | 57% | 2103 fps | 99.6% |
| Accurate 2520 | <<locked>> | 80% | 33,591 psi | 65% | 2192 fps | 97.9% |
| Accurate 4064 | <<locked>> | 80% | 27,833 psi | 54% | 2080 fps | 97.3% |
| Accurate LT-30 | <<locked>> | 80% | 43,700 psi | 85% | 2231 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 36,767 psi | 71% | 2238 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 92% | 39,740 psi | 77% | 2277 fps | 95.4% |
| ADI AR 2219 | <<locked>> | 80% | 41,684 psi | 81% | 2320 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 34,490 psi | 67% | 2169 fps | 96.1% |
| Alliant AR-Comp | <<locked>> | 80% | 32,663 psi | 63% | 2185 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 38,885 psi | 76% | 2323 fps | 96.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 42,540 psi | 83% | 2421 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 31,908 psi | 62% | 2169 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 40,379 psi | 78% | 2251 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 38,798 psi | 75% | 2303 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 96% | 38,101 psi | 74% | 2349 fps | 95.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 41,742 psi | 81% | 2228 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 40,248 psi | 78% | 2320 fps | 95% |
| Bofors RP3 | <<locked>> | 86% | 31,212 psi | 61% | 2172 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 36,854 psi | 72% | 2172 fps | 97.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 32,024 psi | 62% | 2178 fps | 96.2% |
| Hodgdon CFE223 | 37.3 gr | 84% | 39,827 psi | 77% | 2365 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 80% | 38,450 psi | 75% | 2260 fps | 99.7% |
| Hodgdon H335 | <<locked>> | 80% | 38,928 psi | 76% | 2280 fps | 99.3% |
| Hodgdon H4895 | <<locked>> | 82% | 34,853 psi | 68% | 2208 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 33,011 psi | 64% | 2211 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,541 psi | 50% | 1289 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 33,837 psi | 66% | 2169 fps | 95% |
| IMR 3031 | <<locked>> | 80% | 31,459 psi | 61% | 2178 fps | 99.3% |
| IMR 4064 | <<locked>> | 90% | 39,233 psi | 76% | 2260 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 41,075 psi | 80% | 2221 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 35,259 psi | 68% | 2247 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 34,490 psi | 67% | 2169 fps | 96.1% |
| Lovex D073.5 | <<locked>> | 80% | 37,942 psi | 74% | 2238 fps | 98.1% |
| Lovex D073.6 | <<locked>> | 80% | 30,661 psi | 60% | 2142 fps | 97% |
| Lovex S060 | <<locked>> | 82% | 36,085 psi | 70% | 2152 fps | 95.1% |
| Lovex S062 | <<locked>> | 82% | 30,951 psi | 60% | 2110 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 32,764 psi | 64% | 2129 fps | 95.7% |
| Norma 202 | <<locked>> | 80% | 31,836 psi | 62% | 2139 fps | 98% |
| Norma 203B | <<locked>> | 88% | 35,940 psi | 70% | 2254 fps | 95.3% |
| Ramshot Big Game | 39 gr | 90% | 37,971 psi | 74% | 2300 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 84% | 37,217 psi | 72% | 2260 fps | 95.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 37,434 psi | 73% | 2205 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,686 psi | 50% | 1322 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,406 psi | 75% | 2244 fps | 98.5% |
| ReloadSwiss RS 52 | 37.8 gr | 90% | 39,943 psi | 78% | 2382 fps | 95.7% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 30,269 psi | 59% | 2175 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 36,361 psi | 71% | 2178 fps | 98.7% |
| Rottweil R 902 | <<locked>> | 80% | 31,183 psi | 61% | 2087 fps | 95% |
| Rottweil R 903 | <<locked>> | 90% | 33,025 psi | 64% | 2201 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 30,661 psi | 60% | 2142 fps | 97% |
| Shooters World Precision | <<locked>> | 82% | 30,951 psi | 60% | 2110 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 40,582 psi | 79% | 2247 fps | 97.4% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 42,496 psi | 83% | 2329 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 37,057 psi | 72% | 2290 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 40,611 psi | 79% | 2254 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 37,463 psi | 73% | 2254 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,185 psi | 66% | 2103 fps | 98.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,905 psi | 54% | 1991 fps | 97.6% |
| Somchem S321 | <<locked>> | 80% | 36,216 psi | 70% | 2231 fps | 97.1% |
| Somchem S335 | <<locked>> | 80% | 33,750 psi | 66% | 2113 fps | 98.9% |
| Somchem S341 | <<locked>> | 86% | 38,363 psi | 75% | 2260 fps | 95.7% |
| Somchem S355 | <<locked>> | 90% | 34,389 psi | 67% | 2211 fps | 95.4% |
| Somchem S365 | <<locked>> | 98% | 31,836 psi | 62% | 2221 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 38,464 psi | 75% | 2175 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 33,765 psi | 66% | 2106 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 80% | 29,182 psi | 57% | 2087 fps | 99.4% |
| Vihtavuori N140 | <<locked>> | 80% | 30,211 psi | 59% | 2083 fps | 97.8% |
| Vihtavuori N150 | <<locked>> | 86% | 29,370 psi | 57% | 2080 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 34,113 psi | 66% | 2159 fps | 96.2% |
| Vihtavuori N540 | <<locked>> | 80% | 29,167 psi | 57% | 2080 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 36,477 psi | 71% | 2215 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 32,880 psi | 64% | 2192 fps | 96.7% |
| Winchester StaBALL Match | <<locked>> | 84% | 34,403 psi | 67% | 2211 fps | 95.3% |
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 75 powders for 8 x 50 R loaded with the .323 | 200gr | Impala RNFP KO. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,503 fps; across all powders the maximum-charge window runs from 1,444 fps to 2,503 fps. Alliant Reloder-17 gives the best case fill at 100 %, and 75 of the 75 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (355 MPa), the top charges use 65–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.323" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-17, Hodgdon TrailBoss, ReloadSwiss RS 14 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 52, Hodgdon CFE223, Ramshot Big Game rank at the top here: for 8 x 50 R with the .323 | 200gr | Impala RNFP KO 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.