Load Specifications
Load data in caliber .300 CR with .308 | 150gr | Swift Scirocco bullet and 70 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 1200-R, Hodgdon H322 and SNPE Vectan SP 10.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 86% | 54,462 psi | 87% | 2602 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 54,621 psi | 88% | 2684 fps | 100% |
| Accurate 2200 | <<locked>> | 90% | 53,911 psi | 86% | 2717 fps | 95.7% |
| Accurate 2230 | <<locked>> | 90% | 54,360 psi | 87% | 2730 fps | 96.2% |
| Accurate 2460 | <<locked>> | 96% | 53,751 psi | 86% | 2703 fps | 99.4% |
| Accurate 2495ᴾ | <<locked>> | 100% | 42,728 psi | 69% | 2582 fps | 99.9% |
| Accurate 2520ᴾ | <<locked>> | 100% | 54,331 psi | 87% | 2753 fps | 99.3% |
| Accurate 4064ᴾ | <<locked>> | 100% | 39,726 psi | 64% | 2552 fps | 98.2% |
| Accurate LT-30 | <<locked>> | 92% | 54,868 psi | 88% | 2612 fps | 100% |
| Accurate LT-32 | <<locked>> | 92% | 55,376 psi | 89% | 2625 fps | 99.3% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 50,705 psi | 81% | 2690 fps | 96.1% |
| ADI AR 2207 | <<locked>> | 90% | 54,824 psi | 88% | 2644 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 53,301 psi | 85% | 2720 fps | 99.9% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 53,969 psi | 87% | 2710 fps | 98% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 51,039 psi | 82% | 2717 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 96% | 54,520 psi | 87% | 2808 fps | 97.7% |
| Alliant Reloder-10x | <<locked>> | 96% | 55,434 psi | 89% | 2710 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 88% | 53,200 psi | 85% | 2618 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 53,388 psi | 86% | 2612 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 98% | 53,954 psi | 87% | 2664 fps | 98.4% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 51,271 psi | 82% | 2730 fps | 98.1% |
| Hodgdon CFE223 | <<locked>> | 98% | 53,766 psi | 86% | 2808 fps | 96% |
| Hodgdon H322 | <<locked>> | 96% | 54,607 psi | 88% | 2736 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 96% | 56,115 psi | 90% | 2762 fps | 99.7% |
| Hodgdon H4198 | <<locked>> | 88% | 53,954 psi | 87% | 2618 fps | 99.8% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 50,923 psi | 82% | 2703 fps | 96.8% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 46,021 psi | 74% | 2664 fps | 96% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,489 psi | 52% | 1581 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 49,937 psi | 80% | 2664 fps | 96.4% |
| IMR 3031ᴾ | <<locked>> | 100% | 48,225 psi | 77% | 2707 fps | 99.9% |
| IMR 4198 | <<locked>> | 94% | 53,693 psi | 86% | 2638 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 53,838 psi | 86% | 2569 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 53,969 psi | 87% | 2710 fps | 98% |
| Lovex D073.4 | <<locked>> | 90% | 54,940 psi | 88% | 2726 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 96% | 53,969 psi | 87% | 2707 fps | 98.7% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 47,761 psi | 77% | 2671 fps | 98.5% |
| Lovex S053 | <<locked>> | 86% | 55,564 psi | 89% | 2556 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 52,634 psi | 84% | 2638 fps | 96.4% |
| Lovex S062ᴾ | <<locked>> | 100% | 43,671 psi | 70% | 2566 fps | 96.1% |
| Norma 200 | <<locked>> | 92% | 55,941 psi | 90% | 2694 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 49,255 psi | 79% | 2644 fps | 97.3% |
| Norma 202ᴾ | <<locked>> | 100% | 49,052 psi | 79% | 2664 fps | 99.2% |
| Ramshot Wild Boarᴾ | <<locked>> | 100% | 53,040 psi | 85% | 2730 fps | 96.5% |
| Ramshot X-Terminator | <<locked>> | 98% | 56,405 psi | 90% | 2717 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,561 psi | 52% | 1621 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 53,577 psi | 86% | 2602 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 54,143 psi | 87% | 2713 fps | 99% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 53,664 psi | 86% | 2694 fps | 99.4% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 46,325 psi | 74% | 2585 fps | 96.6% |
| Shooters World AR Plus | <<locked>> | 90% | 54,940 psi | 88% | 2726 fps | 99.2% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 47,761 psi | 77% | 2671 fps | 98.5% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 43,671 psi | 70% | 2566 fps | 96.1% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 55,347 psi | 89% | 2684 fps | 97.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 56,072 psi | 90% | 2408 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 53,679 psi | 86% | 2723 fps | 99.5% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 53,171 psi | 85% | 2677 fps | 100% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 52,924 psi | 85% | 2621 fps | 99.4% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 42,380 psi | 68% | 2477 fps | 98.9% |
| Somchem S321 | <<locked>> | 98% | 55,477 psi | 89% | 2756 fps | 98.4% |
| Somchem S335ᴾ | <<locked>> | 100% | 51,010 psi | 82% | 2618 fps | 99.7% |
| Somchem S341ᴾ | <<locked>> | 100% | 51,358 psi | 82% | 2674 fps | 95.9% |
| Vihtavuori N120 | <<locked>> | 90% | 54,839 psi | 88% | 2595 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 55,796 psi | 89% | 2654 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 51,953 psi | 83% | 2618 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 43,947 psi | 70% | 2589 fps | 99.9% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 46,325 psi | 74% | 2595 fps | 99% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 54,694 psi | 88% | 2713 fps | 98.1% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 45,034 psi | 72% | 2592 fps | 98.5% |
| Winchester 748ᴾ | <<locked>> | 100% | 52,634 psi | 84% | 2753 fps | 98.6% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 48,341 psi | 78% | 2667 fps | 96.2% |
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% | 44,556 psi | 71% | 2461 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 29,544 psi | 47% | 2244 fps | 97.3% |
| Accurate 2200 | <<locked>> | 88% | 50,546 psi | 81% | 2664 fps | 95% |
| Accurate 2230 | <<locked>> | 88% | 50,488 psi | 81% | 2671 fps | 95.4% |
| Accurate 2460 | <<locked>> | 82% | 33,576 psi | 54% | 2356 fps | 95.5% |
| Accurate 2495 | <<locked>> | 82% | 23,453 psi | 38% | 2156 fps | 95.2% |
| Accurate 2520 | <<locked>> | 88% | 35,766 psi | 57% | 2444 fps | 95.8% |
| Accurate 4064 | <<locked>> | 92% | 30,893 psi | 50% | 2365 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 38,334 psi | 61% | 2349 fps | 98.3% |
| Accurate LT-32 | <<locked>> | 80% | 38,711 psi | 62% | 2356 fps | 96.5% |
| ADI AR 2206H | <<locked>> | 98% | 47,630 psi | 76% | 2641 fps | 95.4% |
| ADI AR 2207 | <<locked>> | 80% | 40,596 psi | 65% | 2441 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 35,650 psi | 57% | 2415 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 92% | 42,148 psi | 68% | 2520 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 26,992 psi | 43% | 2254 fps | 98.7% |
| Alliant Power Pro 1200-R | 36.2 gr | 90% | 44,933 psi | 72% | 2651 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 33,866 psi | 54% | 2352 fps | 99.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 41,742 psi | 67% | 2444 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 36,419 psi | 58% | 2336 fps | 98.1% |
| Hodgdon Benchmark | <<locked>> | 88% | 39,900 psi | 64% | 2431 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 92% | 39,102 psi | 63% | 2526 fps | 95.4% |
| Hodgdon CFE223 | <<locked>> | 96% | 50,531 psi | 81% | 2756 fps | 95.2% |
| Hodgdon H322 | 32.1 gr | 80% | 32,605 psi | 52% | 2346 fps | 96.5% |
| Hodgdon H335 | <<locked>> | 80% | 32,996 psi | 53% | 2359 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 80% | 42,279 psi | 68% | 2434 fps | 98.5% |
| Hodgdon H4895 | <<locked>> | 96% | 44,947 psi | 72% | 2605 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 42,917 psi | 69% | 2605 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,960 psi | 38% | 1411 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 44,106 psi | 71% | 2566 fps | 95% |
| IMR 3031 | <<locked>> | 82% | 27,412 psi | 44% | 2267 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 35,592 psi | 57% | 2346 fps | 99.9% |
| IMR 4227 | <<locked>> | 80% | 47,630 psi | 76% | 2484 fps | 100% |
| IMR 8208 XBR | <<locked>> | 92% | 42,148 psi | 68% | 2520 fps | 95.5% |
| Lovex D073.4 | <<locked>> | 80% | 38,667 psi | 62% | 2461 fps | 96.4% |
| Lovex D073.5 | <<locked>> | 86% | 38,290 psi | 61% | 2454 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 90% | 34,069 psi | 55% | 2421 fps | 95.2% |
| Lovex S053 | <<locked>> | 80% | 46,702 psi | 75% | 2438 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 46,586 psi | 75% | 2543 fps | 95.1% |
| Lovex S062 | <<locked>> | 98% | 41,031 psi | 66% | 2520 fps | 95.4% |
| Norma 200 | <<locked>> | 80% | 38,551 psi | 62% | 2431 fps | 100% |
| Norma 201 | <<locked>> | 94% | 41,118 psi | 66% | 2503 fps | 95.3% |
| Norma 202 | <<locked>> | 86% | 31,662 psi | 51% | 2333 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 96% | 46,499 psi | 75% | 2628 fps | 95% |
| Ramshot X-Terminator | <<locked>> | 94% | 49,647 psi | 80% | 2618 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,902 psi | 38% | 1447 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 47,674 psi | 76% | 2520 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 36,898 psi | 59% | 2418 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 84% | 33,547 psi | 54% | 2333 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 96% | 41,205 psi | 66% | 2497 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 38,667 psi | 62% | 2461 fps | 96.4% |
| Shooters World Match Rifle | <<locked>> | 90% | 34,069 psi | 55% | 2421 fps | 95.2% |
| Shooters World Precision | <<locked>> | 98% | 41,031 psi | 66% | 2520 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 42,221 psi | 68% | 2477 fps | 95% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 43,207 psi | 69% | 2247 fps | 100% |
| SNPE Vectan SP 10 | 34.4 gr | 80% | 36,187 psi | 58% | 2421 fps | 96.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 34,505 psi | 55% | 2359 fps | 98% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 32,343 psi | 52% | 2260 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 29,428 psi | 47% | 2211 fps | 95.3% |
| Somchem S321 | <<locked>> | 88% | 39,624 psi | 64% | 2497 fps | 95.2% |
| Somchem S335 | <<locked>> | 82% | 29,573 psi | 47% | 2218 fps | 95.2% |
| Somchem S341 | <<locked>> | 98% | 48,269 psi | 77% | 2628 fps | 95.2% |
| Vihtavuori N120 | <<locked>> | 80% | 40,712 psi | 65% | 2402 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 32,605 psi | 52% | 2274 fps | 98.8% |
| Vihtavuori N133 | <<locked>> | 80% | 28,340 psi | 45% | 2185 fps | 96.6% |
| Vihtavuori N135 | <<locked>> | 82% | 25,208 psi | 40% | 2178 fps | 95.6% |
| Vihtavuori N140 | <<locked>> | 88% | 32,082 psi | 51% | 2320 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 92% | 42,235 psi | 68% | 2516 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 90% | 32,837 psi | 53% | 2352 fps | 95.2% |
| Winchester 748 | <<locked>> | 90% | 37,927 psi | 61% | 2497 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 98% | 45,063 psi | 72% | 2612 fps | 95.4% |
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 89 powders for .300 CR loaded with the .308 | 150gr | Swift Scirocco. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,808 fps; across all powders the maximum-charge window runs from 1,581 fps to 2,808 fps. Accurate 2015 gives the best case fill at 100 %, and 89 of the 89 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2495, Accurate 2520 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 1200-R, Hodgdon H322, SNPE Vectan SP 10 rank at the top here: for .300 CR with the .308 | 150gr | Swift Scirocco they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2208, Alliant Power Pro 2000-MR, Alliant Reloder- TS 15.5 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.