Load Specifications
Load data in caliber .300 CR with .308 | 165gr | Swift Scirocco bullet and 79 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon CFE223, Alliant Power Pro 1200-R and Somchem S321.
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 1680 | <<locked>> | 86% | 56,347 psi | 90% | 2487 fps | 100% |
| Accurate 2015 | <<locked>> | 98% | 54,128 psi | 87% | 2536 fps | 100% |
| Accurate 2200 | <<locked>> | 88% | 52,924 psi | 85% | 2569 fps | 96.5% |
| Accurate 2230 | <<locked>> | 88% | 53,127 psi | 85% | 2575 fps | 96.9% |
| Accurate 2460 | <<locked>> | 96% | 56,434 psi | 90% | 2598 fps | 99.9% |
| Accurate 2495ᴾ | <<locked>> | 100% | 45,629 psi | 73% | 2490 fps | 100% |
| Accurate 2520 | <<locked>> | 98% | 53,316 psi | 85% | 2598 fps | 99.6% |
| Accurate 4064ᴾ | <<locked>> | 100% | 42,366 psi | 68% | 2467 fps | 99.2% |
| Accurate LT-30 | <<locked>> | 90% | 53,534 psi | 86% | 2457 fps | 100% |
| Accurate LT-32 | <<locked>> | 90% | 54,027 psi | 87% | 2474 fps | 99.6% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 53,011 psi | 85% | 2592 fps | 97.5% |
| ADI AR 2207 | <<locked>> | 88% | 53,809 psi | 86% | 2487 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 55,927 psi | 90% | 2612 fps | 100% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 56,318 psi | 90% | 2605 fps | 98.9% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 53,519 psi | 86% | 2602 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 94% | 53,737 psi | 86% | 2654 fps | 98.3% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 42,627 psi | 68% | 2457 fps | 96.4% |
| Alliant Reloder-10x | <<locked>> | 94% | 54,505 psi | 87% | 2552 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 88% | 55,288 psi | 89% | 2500 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 55,419 psi | 89% | 2500 fps | 100% |
| Baschieri & Pellagri 107ᴾ | <<locked>> | 100% | 53,069 psi | 85% | 2598 fps | 96.1% |
| Bofors RP3ᴾ | <<locked>> | 100% | 41,771 psi | 67% | 2457 fps | 96.2% |
| Hodgdon Benchmark | <<locked>> | 98% | 55,912 psi | 90% | 2556 fps | 99.2% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 53,853 psi | 86% | 2631 fps | 99.1% |
| Hodgdon CFE223 | <<locked>> | 96% | 52,707 psi | 85% | 2657 fps | 96.8% |
| Hodgdon H322 | <<locked>> | 94% | 53,650 psi | 86% | 2582 fps | 100% |
| Hodgdon H335 | <<locked>> | 94% | 55,187 psi | 88% | 2612 fps | 99.9% |
| Hodgdon H4198 | <<locked>> | 88% | 55,840 psi | 90% | 2503 fps | 100% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 53,272 psi | 85% | 2602 fps | 98% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 47,993 psi | 77% | 2569 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,054 psi | 53% | 1499 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 52,069 psi | 83% | 2562 fps | 97.7% |
| IMR 3031ᴾ | <<locked>> | 100% | 50,937 psi | 82% | 2605 fps | 100% |
| IMR 4198 | <<locked>> | 94% | 55,767 psi | 89% | 2520 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 55,666 psi | 89% | 2448 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 47,732 psi | 77% | 2549 fps | 96.6% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 56,318 psi | 90% | 2605 fps | 98.9% |
| Lovex D073.4 | <<locked>> | 88% | 53,606 psi | 86% | 2569 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 94% | 52,750 psi | 85% | 2556 fps | 99.1% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 50,604 psi | 81% | 2575 fps | 99.4% |
| Lovex S053 | <<locked>> | 84% | 54,259 psi | 87% | 2395 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 54,549 psi | 87% | 2533 fps | 97.6% |
| Lovex S062ᴾ | <<locked>> | 100% | 45,701 psi | 73% | 2470 fps | 97.4% |
| Norma 200 | <<locked>> | 90% | 54,984 psi | 88% | 2536 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 51,822 psi | 83% | 2549 fps | 98.4% |
| Norma 202ᴾ | <<locked>> | 100% | 51,735 psi | 83% | 2566 fps | 99.8% |
| Norma 203Bᴾ | <<locked>> | 100% | 45,759 psi | 73% | 2507 fps | 96.1% |
| Ramshot Wild Boarᴾ | <<locked>> | 100% | 55,956 psi | 90% | 2638 fps | 97.8% |
| Ramshot X-Terminator | <<locked>> | 96% | 55,506 psi | 89% | 2572 fps | 97.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,895 psi | 53% | 1532 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 55,883 psi | 90% | 2487 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 53,345 psi | 86% | 2562 fps | 99.4% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 49,153 psi | 79% | 2615 fps | 96% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 41,089 psi | 66% | 2484 fps | 97.1% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 56,217 psi | 90% | 2589 fps | 99.9% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 48,718 psi | 78% | 2493 fps | 97.9% |
| Shooters World AR Plus | <<locked>> | 88% | 53,606 psi | 86% | 2569 fps | 99.5% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 50,604 psi | 81% | 2575 fps | 99.4% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 45,701 psi | 73% | 2470 fps | 97.4% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 54,041 psi | 87% | 2533 fps | 98.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 54,853 psi | 88% | 2257 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 56,014 psi | 90% | 2615 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 55,782 psi | 89% | 2566 fps | 100% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 51,532 psi | 83% | 2566 fps | 97.1% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 55,274 psi | 89% | 2516 fps | 99.9% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 44,469 psi | 71% | 2382 fps | 99.6% |
| Somchem S321 | <<locked>> | 96% | 54,259 psi | 87% | 2602 fps | 98.9% |
| Somchem S335ᴾ | <<locked>> | 100% | 53,505 psi | 86% | 2516 fps | 100% |
| Somchem S341ᴾ | <<locked>> | 100% | 54,244 psi | 87% | 2585 fps | 97.4% |
| Vihtavuori N120 | <<locked>> | 88% | 53,824 psi | 86% | 2441 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 54,955 psi | 88% | 2503 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 54,375 psi | 87% | 2510 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 46,427 psi | 74% | 2487 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 48,921 psi | 78% | 2500 fps | 99.7% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 39,102 psi | 63% | 2356 fps | 96.3% |
| Vihtavuori N530 | <<locked>> | 98% | 53,548 psi | 86% | 2562 fps | 98.6% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 47,021 psi | 75% | 2490 fps | 99.3% |
| Winchester 748ᴾ | <<locked>> | 100% | 54,969 psi | 88% | 2648 fps | 99.4% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 50,560 psi | 81% | 2569 fps | 97.6% |
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 1680 | <<locked>> | 80% | 46,499 psi | 75% | 2359 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 30,980 psi | 50% | 2159 fps | 98.5% |
| Accurate 2200 | <<locked>> | 84% | 46,369 psi | 74% | 2464 fps | 95% |
| Accurate 2230 | <<locked>> | 84% | 46,021 psi | 74% | 2470 fps | 95.4% |
| Accurate 2460 | <<locked>> | 80% | 33,054 psi | 53% | 2224 fps | 96.3% |
| Accurate 2495 | <<locked>> | 80% | 23,540 psi | 38% | 2047 fps | 96.3% |
| Accurate 2520 | <<locked>> | 82% | 30,589 psi | 49% | 2208 fps | 95% |
| Accurate 4064 | <<locked>> | 88% | 28,805 psi | 46% | 2195 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 39,740 psi | 64% | 2251 fps | 99.1% |
| Accurate LT-32 | <<locked>> | 80% | 40,118 psi | 64% | 2260 fps | 97.7% |
| ADI AR 2206H | <<locked>> | 94% | 44,121 psi | 71% | 2451 fps | 95.6% |
| ADI AR 2207 | <<locked>> | 80% | 42,250 psi | 68% | 2329 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 37,449 psi | 60% | 2329 fps | 98.7% |
| ADI Benchmark 8208 | <<locked>> | 88% | 38,725 psi | 62% | 2329 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 28,297 psi | 45% | 2172 fps | 99.6% |
| Alliant Power Pro 1200-R | 33.4 gr | 86% | 41,466 psi | 66% | 2457 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 39,972 psi | 64% | 2408 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 35,650 psi | 57% | 2264 fps | 99.8% |
| Alliant Reloder-7 | <<locked>> | 80% | 43,424 psi | 70% | 2339 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 37,942 psi | 61% | 2244 fps | 99% |
| Baschieri & Pellagri 107 | <<locked>> | 98% | 49,414 psi | 79% | 2546 fps | 95.3% |
| Bofors RP3 | <<locked>> | 98% | 39,001 psi | 63% | 2408 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 84% | 36,985 psi | 59% | 2254 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 88% | 36,042 psi | 58% | 2343 fps | 95.5% |
| Hodgdon CFE223 | 38.9 gr | 92% | 46,064 psi | 74% | 2552 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 80% | 34,156 psi | 55% | 2260 fps | 97.9% |
| Hodgdon H335 | <<locked>> | 80% | 34,519 psi | 55% | 2274 fps | 97% |
| Hodgdon H4198 | <<locked>> | 80% | 43,830 psi | 70% | 2333 fps | 99.3% |
| Hodgdon H4895 | <<locked>> | 92% | 41,582 psi | 67% | 2418 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 39,755 psi | 64% | 2421 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,482 psi | 39% | 1339 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 40,640 psi | 65% | 2379 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 27,137 psi | 44% | 2149 fps | 96.3% |
| IMR 4198 | <<locked>> | 80% | 37,086 psi | 59% | 2247 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 49,487 psi | 79% | 2372 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 41,916 psi | 67% | 2451 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 88% | 38,725 psi | 62% | 2329 fps | 95.5% |
| Lovex D073.4 | <<locked>> | 80% | 40,582 psi | 65% | 2372 fps | 97.7% |
| Lovex D073.5 | <<locked>> | 82% | 34,983 psi | 56% | 2264 fps | 95.5% |
| Lovex D073.6 | <<locked>> | 86% | 31,473 psi | 50% | 2241 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 48,414 psi | 78% | 2323 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 43,105 psi | 69% | 2359 fps | 95.2% |
| Lovex S062 | <<locked>> | 94% | 38,218 psi | 61% | 2343 fps | 95.6% |
| Norma 200 | <<locked>> | 80% | 40,393 psi | 65% | 2329 fps | 100% |
| Norma 201 | <<locked>> | 90% | 38,145 psi | 61% | 2323 fps | 95.5% |
| Norma 202 | <<locked>> | 82% | 29,341 psi | 47% | 2159 fps | 95.2% |
| Norma 203B | <<locked>> | 98% | 42,873 psi | 69% | 2457 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 92% | 42,641 psi | 68% | 2434 fps | 95% |
| Ramshot X-Terminator | <<locked>> | 90% | 45,701 psi | 73% | 2428 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,468 psi | 39% | 1371 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 49,458 psi | 79% | 2405 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 33,881 psi | 54% | 2234 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 46,035 psi | 74% | 2562 fps | 95.2% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 36,216 psi | 58% | 2379 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 31,183 psi | 50% | 2159 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 92% | 38,203 psi | 61% | 2316 fps | 95.5% |
| Shooters World AR Plus | <<locked>> | 80% | 40,582 psi | 65% | 2372 fps | 97.7% |
| Shooters World Match Rifle | <<locked>> | 86% | 31,473 psi | 50% | 2241 fps | 95.3% |
| Shooters World Precision | <<locked>> | 94% | 38,218 psi | 61% | 2343 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 38,653 psi | 62% | 2290 fps | 95% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 44,744 psi | 72% | 2136 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 37,884 psi | 61% | 2333 fps | 97.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 36,303 psi | 58% | 2270 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 42,627 psi | 68% | 2425 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 30,081 psi | 48% | 2093 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 27,311 psi | 44% | 2047 fps | 95.4% |
| Somchem S321 | 35.1 gr | 84% | 36,376 psi | 58% | 2310 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 29,312 psi | 47% | 2096 fps | 96.1% |
| Somchem S341 | <<locked>> | 94% | 43,990 psi | 71% | 2434 fps | 95.2% |
| Vihtavuori N120 | <<locked>> | 80% | 42,366 psi | 68% | 2290 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 34,229 psi | 55% | 2185 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 80% | 29,776 psi | 48% | 2106 fps | 98% |
| Vihtavuori N135 | <<locked>> | 80% | 24,932 psi | 40% | 2060 fps | 96.6% |
| Vihtavuori N140 | <<locked>> | 84% | 29,544 psi | 47% | 2146 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 98% | 36,593 psi | 59% | 2310 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 88% | 38,754 psi | 62% | 2329 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 86% | 30,255 psi | 49% | 2178 fps | 95.3% |
| Winchester 748 | <<locked>> | 86% | 34,737 psi | 56% | 2306 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 94% | 41,640 psi | 67% | 2428 fps | 95.5% |
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 .300 CR loaded with the .308 | 165gr | Swift Scirocco. Hodgdon CFE223 delivers the highest muzzle velocity at 2,657 fps; across all powders the maximum-charge window runs from 1,499 fps to 2,657 fps. Accurate 2495 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 (430 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, ADI AR 2206H 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. Hodgdon CFE223, Alliant Power Pro 1200-R, Somchem S321 rank at the top here: for .300 CR with the .308 | 165gr | Swift Scirocco they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2208, Alliant Reloder-17, Hodgdon H380 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.