Load Specifications
Bullet Manufacturer:Sierra
Bullet Weight:205 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.300 CR load data
Case Length (l3):2"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:53 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:13.0
Load data in caliber .300 CR with .308 | 205gr | Sierra GameKing bullet and 100 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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 92% | 54,868 psi | 88% | 2274 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 55,970 psi | 90% | 2362 fps | 99.2% |
| Accurate 2230 | <<locked>> | 82% | 52,605 psi | 84% | 2320 fps | 99.1% |
| Accurate 2460 | <<locked>> | 88% | 53,635 psi | 86% | 2303 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 54,534 psi | 87% | 2323 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 54,679 psi | 88% | 2349 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 54,128 psi | 87% | 2359 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 39,566 psi | 63% | 2224 fps | 96.2% |
| Accurate LT-30 | <<locked>> | 86% | 55,825 psi | 90% | 2234 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 56,260 psi | 90% | 2251 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 53,809 psi | 86% | 2352 fps | 99.5% |
| ADI AR 2207 | <<locked>> | 82% | 54,012 psi | 87% | 2211 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 54,592 psi | 88% | 2346 fps | 99.2% |
| ADI AR 2219 | <<locked>> | 86% | 55,593 psi | 89% | 2333 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 53,345 psi | 86% | 2316 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 94% | 55,927 psi | 90% | 2336 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 54,636 psi | 88% | 2402 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 52,866 psi | 85% | 2438 fps | 99% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 53,287 psi | 85% | 2362 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 88% | 55,288 psi | 89% | 2283 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 54,534 psi | 87% | 2382 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 41,307 psi | 66% | 2234 fps | 96.4% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 47,282 psi | 76% | 2365 fps | 99.2% |
| Alliant Reloder-7 | <<locked>> | 82% | 54,752 psi | 88% | 2224 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 54,476 psi | 87% | 2234 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 53,258 psi | 85% | 2365 fps | 98.8% |
| Bofors RP3ᴾ | <<locked>> | 100% | 53,505 psi | 86% | 2375 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 92% | 55,709 psi | 89% | 2303 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 94% | 55,056 psi | 88% | 2385 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 90% | 53,287 psi | 85% | 2418 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 88% | 54,259 psi | 87% | 2320 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 55,259 psi | 89% | 2346 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 55,448 psi | 89% | 2382 fps | 98.5% |
| Hodgdon H4198 | <<locked>> | 82% | 54,607 psi | 88% | 2234 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 54,273 psi | 87% | 2362 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 37,652 psi | 60% | 2146 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 55,927 psi | 90% | 2431 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,403 psi | 55% | 1362 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 55,608 psi | 89% | 2362 fps | 99.8% |
| IMR 3031 | <<locked>> | 96% | 56,420 psi | 90% | 2385 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 54,027 psi | 87% | 2329 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 96% | 55,317 psi | 89% | 2313 fps | 96.3% |
| IMR 4198 | <<locked>> | 88% | 55,608 psi | 89% | 2244 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 38,740 psi | 62% | 2188 fps | 95.9% |
| IMR 4895 | <<locked>> | 98% | 55,898 psi | 90% | 2408 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 92% | 53,345 psi | 86% | 2316 fps | 99.9% |
| Lovex D073.4 | <<locked>> | 82% | 53,548 psi | 86% | 2306 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 53,185 psi | 85% | 2306 fps | 100% |
| Lovex D073.6 | <<locked>> | 96% | 55,767 psi | 89% | 2372 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 54,650 psi | 88% | 2293 fps | 99.5% |
| Lovex S062 | <<locked>> | 98% | 53,214 psi | 85% | 2329 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 46,180 psi | 74% | 2234 fps | 96% |
| Norma 200 | <<locked>> | 84% | 55,056 psi | 88% | 2257 fps | 100% |
| Norma 201 | <<locked>> | 96% | 56,072 psi | 90% | 2349 fps | 100% |
| Norma 202 | <<locked>> | 96% | 56,289 psi | 90% | 2352 fps | 100% |
| Norma 203B | <<locked>> | 98% | 53,606 psi | 86% | 2372 fps | 99.5% |
| Norma URPᴾ | <<locked>> | 100% | 40,799 psi | 65% | 2228 fps | 96.2% |
| Ramshot Big Game | <<locked>> | 98% | 53,867 psi | 86% | 2395 fps | 99.4% |
| Ramshot TAC | <<locked>> | 92% | 53,867 psi | 86% | 2329 fps | 97.7% |
| Ramshot Wild Boar | <<locked>> | 94% | 56,173 psi | 90% | 2388 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 90% | 54,940 psi | 88% | 2323 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,432 psi | 55% | 1391 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 53,330 psi | 86% | 2306 fps | 100% |
| ReloadSwiss RS 50ᴾ | <<locked>> | 100% | 56,275 psi | 90% | 2365 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 53,882 psi | 86% | 2434 fps | 99.3% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 50,517 psi | 81% | 2421 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 53,853 psi | 86% | 2297 fps | 100% |
| Rottweil R 902 | <<locked>> | 98% | 56,159 psi | 90% | 2343 fps | 100% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 49,545 psi | 79% | 2320 fps | 99.5% |
| Shooters World AR Plus | <<locked>> | 82% | 53,548 psi | 86% | 2306 fps | 100% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 46,180 psi | 74% | 2234 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 96% | 55,767 psi | 89% | 2372 fps | 100% |
| Shooters World Precision | <<locked>> | 98% | 53,214 psi | 85% | 2329 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 53,243 psi | 85% | 2280 fps | 99.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 53,853 psi | 86% | 1991 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 56,246 psi | 90% | 2349 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 51,576 psi | 83% | 2372 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 55,985 psi | 90% | 2293 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 55,347 psi | 89% | 2352 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 55,477 psi | 89% | 2369 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 55,332 psi | 89% | 2264 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 54,172 psi | 87% | 2257 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 54,433 psi | 87% | 2349 fps | 100% |
| Somchem S335 | <<locked>> | 94% | 53,998 psi | 87% | 2264 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 54,549 psi | 87% | 2346 fps | 99.5% |
| Somchem S355ᴾ | <<locked>> | 100% | 50,691 psi | 81% | 2323 fps | 99.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,216 psi | 58% | 2182 fps | 98.2% |
| Vihtavuori N120 | <<locked>> | 82% | 53,954 psi | 87% | 2169 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 55,245 psi | 89% | 2238 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 55,013 psi | 88% | 2251 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 54,897 psi | 88% | 2316 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 56,376 psi | 90% | 2329 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 48,776 psi | 78% | 2267 fps | 99.8% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 43,062 psi | 69% | 2228 fps | 96.6% |
| Vihtavuori N530 | <<locked>> | 92% | 53,925 psi | 86% | 2316 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 98% | 54,636 psi | 88% | 2333 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 41,945 psi | 67% | 2234 fps | 96.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 44,411 psi | 71% | 2221 fps | 98.6% |
| Winchester 748 | <<locked>> | 94% | 56,072 psi | 90% | 2398 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 96% | 54,882 psi | 88% | 2379 fps | 99.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 38,058 psi | 61% | 2054 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 49,139 psi | 79% | 2270 fps | 98.4% |
| Accurate 2230 | <<locked>> | 80% | 49,298 psi | 79% | 2277 fps | 98.7% |
| Accurate 2460 | <<locked>> | 80% | 41,147 psi | 66% | 2136 fps | 99.8% |
| Accurate 2495 | <<locked>> | 80% | 30,487 psi | 49% | 1982 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 36,347 psi | 58% | 2093 fps | 99.2% |
| Accurate 4064 | <<locked>> | 80% | 28,863 psi | 46% | 1965 fps | 98.4% |
| Accurate 4350 | <<locked>> | 98% | 37,260 psi | 60% | 2182 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 46,543 psi | 75% | 2119 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 46,934 psi | 75% | 2136 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 34,925 psi | 56% | 2057 fps | 96.1% |
| ADI AR 2207 | <<locked>> | 80% | 50,604 psi | 81% | 2172 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 35,723 psi | 57% | 2057 fps | 95.4% |
| ADI AR 2219 | <<locked>> | 80% | 45,687 psi | 73% | 2211 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,898 psi | 59% | 2070 fps | 97.9% |
| Alliant AR-Comp | <<locked>> | 80% | 35,418 psi | 57% | 2077 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 42,322 psi | 68% | 2224 fps | 98.6% |
| Alliant Power Pro 2000-MR | 36 gr | 86% | 38,014 psi | 61% | 2192 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 30,284 psi | 49% | 1988 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 43,337 psi | 69% | 2136 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 35,259 psi | 57% | 2087 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 98% | 39,131 psi | 63% | 2195 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 90% | 34,098 psi | 55% | 2126 fps | 95.9% |
| Alliant Reloder-7 | <<locked>> | 80% | 51,808 psi | 83% | 2192 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 45,237 psi | 73% | 2123 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 35,882 psi | 58% | 2093 fps | 95% |
| Bofors RP3 | <<locked>> | 82% | 29,457 psi | 47% | 1985 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,088 psi | 63% | 2070 fps | 98.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,374 psi | 55% | 2077 fps | 97.9% |
| Hodgdon CFE223 | 34.3 gr | 80% | 37,927 psi | 61% | 2178 fps | 96.4% |
| Hodgdon H322 | <<locked>> | 80% | 41,684 psi | 67% | 2156 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 42,235 psi | 68% | 2175 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 40,074 psi | 64% | 2165 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 80% | 51,227 psi | 82% | 2195 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 35,143 psi | 56% | 2067 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 33,199 psi | 53% | 2057 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 31,270 psi | 50% | 2031 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,396 psi | 41% | 1211 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 33,953 psi | 54% | 2031 fps | 96.3% |
| IMR 3031 | <<locked>> | 80% | 33,620 psi | 54% | 2070 fps | 99.9% |
| IMR 4064 | <<locked>> | 84% | 35,360 psi | 57% | 2044 fps | 95.6% |
| IMR 4166 Enduron | <<locked>> | 92% | 49,284 psi | 79% | 2231 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 44,208 psi | 71% | 2106 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 36,332 psi | 58% | 2142 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 31,676 psi | 51% | 2024 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 80% | 36,898 psi | 59% | 2070 fps | 97.9% |
| Lovex D073.4 | <<locked>> | 80% | 49,734 psi | 80% | 2260 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 40,828 psi | 65% | 2139 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 80% | 32,648 psi | 52% | 2037 fps | 98.4% |
| Lovex S060 | <<locked>> | 80% | 35,940 psi | 58% | 2014 fps | 96.3% |
| Lovex S062 | <<locked>> | 80% | 30,705 psi | 49% | 1965 fps | 96.2% |
| Lovex S065 | <<locked>> | 98% | 43,337 psi | 69% | 2192 fps | 95.3% |
| Norma 200 | <<locked>> | 80% | 48,834 psi | 78% | 2185 fps | 100% |
| Norma 201 | <<locked>> | 80% | 34,272 psi | 55% | 2024 fps | 97.3% |
| Norma 202 | <<locked>> | 80% | 34,214 psi | 55% | 2037 fps | 99.2% |
| Norma 203B | <<locked>> | 82% | 32,460 psi | 52% | 2034 fps | 95.3% |
| Norma URP | <<locked>> | 98% | 38,334 psi | 61% | 2182 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 84% | 34,055 psi | 55% | 2080 fps | 95.4% |
| Ramshot TAC | <<locked>> | 84% | 41,611 psi | 67% | 2149 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 35,418 psi | 57% | 2077 fps | 96.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 39,943 psi | 64% | 2106 fps | 97.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,541 psi | 41% | 1240 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 41,365 psi | 66% | 2142 fps | 99.6% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 46,644 psi | 75% | 2238 fps | 95.3% |
| ReloadSwiss RS 52 | 33.3 gr | 82% | 33,837 psi | 54% | 2110 fps | 95% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 28,253 psi | 45% | 1995 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 37,869 psi | 61% | 2067 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 80% | 32,474 psi | 52% | 1982 fps | 96.7% |
| Rottweil R 903 | <<locked>> | 84% | 29,631 psi | 48% | 1985 fps | 95.1% |
| Shooters World AR Plus | <<locked>> | 80% | 49,734 psi | 80% | 2260 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 98% | 43,337 psi | 69% | 2192 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,648 psi | 52% | 2037 fps | 98.4% |
| Shooters World Precision | <<locked>> | 80% | 30,705 psi | 49% | 1965 fps | 96.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 43,569 psi | 70% | 2149 fps | 98.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 50,937 psi | 82% | 1962 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 45,977 psi | 74% | 2221 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 33,156 psi | 53% | 2067 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 44,106 psi | 71% | 2149 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 39,552 psi | 63% | 2126 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 33,431 psi | 54% | 2031 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,201 psi | 58% | 2001 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,472 psi | 47% | 1893 fps | 98.9% |
| Somchem S321 | <<locked>> | 80% | 39,204 psi | 63% | 2136 fps | 98.7% |
| Somchem S335 | <<locked>> | 80% | 35,462 psi | 57% | 2005 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 34,200 psi | 55% | 2041 fps | 95.6% |
| Somchem S355 | <<locked>> | 84% | 30,835 psi | 49% | 1991 fps | 95.2% |
| Somchem S365 | <<locked>> | 92% | 28,485 psi | 46% | 2008 fps | 95.2% |
| Vihtavuori N120 | <<locked>> | 80% | 50,560 psi | 81% | 2129 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 41,118 psi | 66% | 2064 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,172 psi | 58% | 2005 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 31,270 psi | 50% | 1985 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 32,126 psi | 52% | 1985 fps | 99% |
| Vihtavuori N150 | <<locked>> | 82% | 27,499 psi | 44% | 1903 fps | 95.4% |
| Vihtavuori N160 | <<locked>> | 96% | 38,174 psi | 61% | 2142 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 36,550 psi | 59% | 2064 fps | 97.9% |
| Vihtavuori N540 | <<locked>> | 80% | 30,980 psi | 50% | 1978 fps | 98.4% |
| Vihtavuori N550 | <<locked>> | 98% | 39,378 psi | 63% | 2192 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 32,343 psi | 52% | 2005 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 35,114 psi | 56% | 2093 fps | 98.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 32,474 psi | 52% | 2031 fps | 95.9% |
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 100 powders for .300 CR loaded with the .308 | 205gr | Sierra GameKing. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,438 fps; across all powders the maximum-charge window runs from 1,362 fps to 2,438 fps. Accurate 4064 gives the best case fill at 100 %, and 100 of the 100 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 205.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 4064, Accurate 4350, ADI AR 2208 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 .300 CR with the .308 | 205gr | Sierra GameKing 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.