Load Specifications
Load data in caliber .300 CR with .308 | 185gr | Lapua Mega bullet and 91 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.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 92% | 54,172 psi | 87% | 2425 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 55,216 psi | 89% | 2513 fps | 98.8% |
| Accurate 2230 | <<locked>> | 84% | 55,999 psi | 90% | 2526 fps | 99.1% |
| Accurate 2460 | <<locked>> | 88% | 52,808 psi | 85% | 2451 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 53,650 psi | 86% | 2474 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 53,650 psi | 86% | 2500 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 53,432 psi | 86% | 2510 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 55,085 psi | 88% | 2382 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 55,564 psi | 89% | 2402 fps | 100% |
| ADI AR 2206H | <<locked>> | 96% | 56,434 psi | 90% | 2546 fps | 99.4% |
| ADI AR 2207 | <<locked>> | 82% | 53,156 psi | 85% | 2362 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 54,114 psi | 87% | 2493 fps | 98.7% |
| ADI AR 2219 | <<locked>> | 86% | 54,824 psi | 88% | 2490 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 56,217 psi | 90% | 2510 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 94% | 55,172 psi | 88% | 2493 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 53,867 psi | 86% | 2556 fps | 99.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 56,159 psi | 90% | 2644 fps | 98.9% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 52,547 psi | 84% | 2510 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 88% | 54,389 psi | 87% | 2434 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 53,490 psi | 86% | 2526 fps | 98.8% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 46,688 psi | 75% | 2507 fps | 98.6% |
| Alliant Reloder-7 | <<locked>> | 82% | 54,056 psi | 87% | 2375 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 53,780 psi | 86% | 2382 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 56,188 psi | 90% | 2559 fps | 98.7% |
| Bofors RP3ᴾ | <<locked>> | 100% | 52,837 psi | 85% | 2526 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 92% | 55,187 psi | 88% | 2454 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 94% | 54,563 psi | 87% | 2539 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 92% | 56,202 psi | 90% | 2618 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 88% | 53,548 psi | 86% | 2474 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 54,650 psi | 88% | 2500 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 54,636 psi | 88% | 2530 fps | 97.9% |
| Hodgdon H4198 | <<locked>> | 82% | 53,925 psi | 86% | 2385 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 53,679 psi | 86% | 2513 fps | 99.5% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 36,999 psi | 59% | 2270 fps | 96.1% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 55,042 psi | 88% | 2582 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,185 psi | 55% | 1463 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 55,201 psi | 89% | 2516 fps | 99.5% |
| IMR 3031 | <<locked>> | 96% | 55,448 psi | 89% | 2543 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 53,359 psi | 86% | 2477 fps | 98.8% |
| IMR 4198 | <<locked>> | 88% | 55,347 psi | 89% | 2402 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 54,781 psi | 88% | 2556 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 94% | 56,217 psi | 90% | 2510 fps | 99.9% |
| Lovex D073.4 | <<locked>> | 82% | 52,924 psi | 85% | 2457 fps | 100% |
| Lovex D073.5 | <<locked>> | 90% | 56,217 psi | 90% | 2500 fps | 100% |
| Lovex D073.6 | <<locked>> | 96% | 54,882 psi | 88% | 2523 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 54,085 psi | 87% | 2444 fps | 99.2% |
| Lovex S062ᴾ | <<locked>> | 100% | 55,695 psi | 89% | 2516 fps | 99.9% |
| Norma 200 | <<locked>> | 84% | 54,302 psi | 87% | 2411 fps | 100% |
| Norma 201 | <<locked>> | 96% | 55,071 psi | 88% | 2497 fps | 99.8% |
| Norma 202 | <<locked>> | 96% | 55,216 psi | 89% | 2503 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 56,115 psi | 90% | 2562 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 98% | 53,258 psi | 85% | 2543 fps | 99% |
| Ramshot TAC | <<locked>> | 92% | 53,534 psi | 86% | 2477 fps | 97% |
| Ramshot Wild Boar | <<locked>> | 94% | 55,608 psi | 89% | 2543 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 90% | 54,186 psi | 87% | 2467 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,476 psi | 55% | 1499 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 56,072 psi | 90% | 2500 fps | 100% |
| ReloadSwiss RS 50ᴾ | <<locked>> | 100% | 55,695 psi | 89% | 2513 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 52,939 psi | 85% | 2585 fps | 98.8% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 49,893 psi | 80% | 2569 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 53,301 psi | 85% | 2448 fps | 100% |
| Rottweil R 902 | <<locked>> | 98% | 55,550 psi | 89% | 2493 fps | 99.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 48,718 psi | 78% | 2461 fps | 99.1% |
| Shooters World AR Plus | <<locked>> | 82% | 52,924 psi | 85% | 2457 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 96% | 54,882 psi | 88% | 2523 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 55,695 psi | 89% | 2516 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 56,304 psi | 90% | 2474 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 55,927 psi | 90% | 2162 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 55,506 psi | 89% | 2503 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 51,111 psi | 82% | 2523 fps | 98.8% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 55,506 psi | 89% | 2451 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 54,737 psi | 88% | 2500 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 54,665 psi | 88% | 2520 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 54,578 psi | 88% | 2415 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 53,606 psi | 86% | 2405 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 53,940 psi | 86% | 2503 fps | 99.9% |
| Somchem S335 | <<locked>> | 96% | 56,405 psi | 90% | 2451 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 53,896 psi | 86% | 2493 fps | 99.1% |
| Somchem S355ᴾ | <<locked>> | 100% | 50,096 psi | 80% | 2467 fps | 99.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 35,911 psi | 58% | 2313 fps | 97.4% |
| Vihtavuori N120 | <<locked>> | 84% | 56,347 psi | 90% | 2352 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 54,563 psi | 87% | 2388 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 54,259 psi | 87% | 2402 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 53,969 psi | 87% | 2467 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 55,854 psi | 90% | 2484 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 48,066 psi | 77% | 2408 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 92% | 53,113 psi | 85% | 2464 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 98% | 54,099 psi | 87% | 2487 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 44,019 psi | 71% | 2356 fps | 98% |
| Winchester 748 | <<locked>> | 94% | 55,303 psi | 89% | 2552 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 96% | 54,157 psi | 87% | 2526 fps | 99.5% |
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% | 37,405 psi | 60% | 2188 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 48,167 psi | 77% | 2411 fps | 97.7% |
| Accurate 2230 | <<locked>> | 80% | 48,385 psi | 78% | 2418 fps | 98.1% |
| Accurate 2460 | <<locked>> | 80% | 40,364 psi | 65% | 2270 fps | 99.5% |
| Accurate 2495 | <<locked>> | 80% | 29,994 psi | 48% | 2106 fps | 99.7% |
| Accurate 2520 | <<locked>> | 80% | 35,824 psi | 57% | 2224 fps | 98.6% |
| Accurate 4064 | <<locked>> | 80% | 28,398 psi | 46% | 2087 fps | 97.6% |
| Accurate LT-30 | <<locked>> | 80% | 46,166 psi | 74% | 2267 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 46,543 psi | 75% | 2280 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 80% | 34,316 psi | 55% | 2178 fps | 95% |
| ADI AR 2207 | <<locked>> | 80% | 49,980 psi | 80% | 2323 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 37,536 psi | 60% | 2228 fps | 95.2% |
| ADI AR 2219 | <<locked>> | 80% | 44,933 psi | 72% | 2356 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,260 psi | 58% | 2198 fps | 97.1% |
| Alliant AR-Comp | <<locked>> | 80% | 34,664 psi | 56% | 2208 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 41,481 psi | 67% | 2362 fps | 97.9% |
| Alliant Power Pro 2000-MR | 39.7 gr | 88% | 40,059 psi | 64% | 2375 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 31,720 psi | 51% | 2152 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 42,714 psi | 68% | 2277 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 36,970 psi | 59% | 2257 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 92% | 35,926 psi | 58% | 2300 fps | 95.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 50,908 psi | 82% | 2339 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 44,643 psi | 72% | 2264 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 40,306 psi | 65% | 2316 fps | 95.6% |
| Bofors RP3 | <<locked>> | 84% | 30,980 psi | 50% | 2152 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,580 psi | 62% | 2201 fps | 98.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,837 psi | 54% | 2205 fps | 97.1% |
| Hodgdon CFE223 | 37 gr | 80% | 37,463 psi | 60% | 2313 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 41,292 psi | 66% | 2300 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 41,626 psi | 67% | 2313 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 92% | 42,221 psi | 68% | 2346 fps | 95.3% |
| Hodgdon H4198 | <<locked>> | 80% | 50,836 psi | 82% | 2346 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 34,519 psi | 55% | 2192 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 34,925 psi | 56% | 2228 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 32,779 psi | 53% | 2198 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,222 psi | 40% | 1302 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 33,417 psi | 54% | 2152 fps | 95.3% |
| IMR 3031 | <<locked>> | 80% | 33,156 psi | 53% | 2201 fps | 99.7% |
| IMR 4064 | <<locked>> | 86% | 37,057 psi | 59% | 2215 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 43,671 psi | 70% | 2251 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 35,302 psi | 57% | 2234 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 36,260 psi | 58% | 2198 fps | 97.1% |
| Lovex D073.4 | <<locked>> | 80% | 49,037 psi | 79% | 2408 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 80% | 40,161 psi | 64% | 2270 fps | 98.8% |
| Lovex D073.6 | <<locked>> | 80% | 32,097 psi | 51% | 2162 fps | 97.7% |
| Lovex S060 | <<locked>> | 80% | 35,578 psi | 57% | 2139 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 30,269 psi | 49% | 2087 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 48,240 psi | 77% | 2333 fps | 100% |
| Norma 201 | <<locked>> | 80% | 33,794 psi | 54% | 2149 fps | 96.4% |
| Norma 202 | <<locked>> | 80% | 33,678 psi | 54% | 2165 fps | 98.6% |
| Norma 203B | <<locked>> | 86% | 36,260 psi | 58% | 2247 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 86% | 35,766 psi | 57% | 2251 fps | 95.1% |
| Ramshot TAC | <<locked>> | 88% | 46,804 psi | 75% | 2379 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 34,882 psi | 56% | 2205 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 39,407 psi | 63% | 2238 fps | 96.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,309 psi | 41% | 1332 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 40,814 psi | 65% | 2280 fps | 99.2% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 48,834 psi | 78% | 2418 fps | 95% |
| ReloadSwiss RS 52 | 37.6 gr | 86% | 37,884 psi | 61% | 2333 fps | 95.6% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 29,878 psi | 48% | 2165 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 37,275 psi | 60% | 2198 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 80% | 32,111 psi | 51% | 2106 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 88% | 33,112 psi | 53% | 2192 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 49,037 psi | 79% | 2408 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,097 psi | 51% | 2162 fps | 97.7% |
| Shooters World Precision | <<locked>> | 80% | 30,269 psi | 49% | 2087 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 43,004 psi | 69% | 2287 fps | 98.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 50,401 psi | 81% | 2103 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 45,324 psi | 73% | 2362 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 37,173 psi | 60% | 2287 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 43,410 psi | 70% | 2290 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 44,411 psi | 71% | 2349 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 35,128 psi | 56% | 2198 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,650 psi | 57% | 2129 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,993 psi | 46% | 2011 fps | 98.2% |
| Somchem S321 | <<locked>> | 80% | 38,551 psi | 62% | 2264 fps | 98% |
| Somchem S335 | <<locked>> | 80% | 35,012 psi | 56% | 2133 fps | 99.3% |
| Somchem S341 | <<locked>> | 82% | 35,940 psi | 58% | 2208 fps | 95.4% |
| Somchem S355 | <<locked>> | 86% | 32,460 psi | 52% | 2159 fps | 95% |
| Somchem S365 | <<locked>> | 96% | 31,734 psi | 51% | 2218 fps | 95.8% |
| Vihtavuori N120 | <<locked>> | 80% | 49,951 psi | 80% | 2280 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 40,509 psi | 65% | 2201 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,621 psi | 57% | 2136 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 30,676 psi | 49% | 2110 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 80% | 31,575 psi | 51% | 2106 fps | 98.4% |
| Vihtavuori N150 | <<locked>> | 84% | 28,819 psi | 46% | 2060 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 36,085 psi | 58% | 2192 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 80% | 30,530 psi | 49% | 2100 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 36,361 psi | 58% | 2218 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 34,708 psi | 56% | 2224 fps | 97.6% |
| Winchester StaBALL Match | <<locked>> | 82% | 34,243 psi | 55% | 2201 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 91 powders for .300 CR loaded with the .308 | 185gr | Lapua Mega. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,644 fps; across all powders the maximum-charge window runs from 1,463 fps to 2,644 fps. Accurate 4064 gives the best case fill at 100 %, and 91 of the 91 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 185.0 gr projectile in 0.308" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Accurate 4064, ADI AR 2208, Alliant Reloder- TS 15.5 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 | 185gr | Lapua Mega 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.