Load Specifications
Load data in caliber .300 CR with .308 | 150gr | Hornady ECX bullet and 71 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, SNPE Vectan SP 10 and ADI AR 2219.
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% | 2621 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 54,708 psi | 88% | 2703 fps | 100% |
| Accurate 2200 | <<locked>> | 90% | 54,346 psi | 87% | 2746 fps | 96.1% |
| Accurate 2230 | <<locked>> | 90% | 54,520 psi | 87% | 2753 fps | 96.5% |
| Accurate 2460 | <<locked>> | 96% | 53,998 psi | 87% | 2726 fps | 99.6% |
| Accurate 2495ᴾ | <<locked>> | 100% | 42,337 psi | 68% | 2595 fps | 99.9% |
| Accurate 2520ᴾ | <<locked>> | 100% | 54,578 psi | 88% | 2776 fps | 99.5% |
| Accurate 4064ᴾ | <<locked>> | 100% | 39,349 psi | 63% | 2566 fps | 98.3% |
| Accurate LT-30 | <<locked>> | 92% | 54,984 psi | 88% | 2635 fps | 100% |
| Accurate LT-32 | <<locked>> | 92% | 55,477 psi | 89% | 2648 fps | 99.4% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 50,705 psi | 81% | 2710 fps | 96.4% |
| ADI AR 2207 | <<locked>> | 90% | 55,042 psi | 88% | 2664 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 53,664 psi | 86% | 2743 fps | 100% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 54,027 psi | 87% | 2733 fps | 98.2% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 51,271 psi | 82% | 2736 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 96% | 54,868 psi | 88% | 2835 fps | 97.9% |
| Alliant Reloder-10x | <<locked>> | 96% | 55,332 psi | 89% | 2726 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 88% | 53,229 psi | 85% | 2638 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 53,519 psi | 86% | 2631 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 98% | 54,085 psi | 87% | 2687 fps | 98.6% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 51,561 psi | 83% | 2756 fps | 98.4% |
| Hodgdon CFE223 | <<locked>> | 98% | 54,462 psi | 87% | 2838 fps | 96.4% |
| Hodgdon H322 | <<locked>> | 96% | 54,926 psi | 88% | 2759 fps | 100% |
| Hodgdon H335 | <<locked>> | 94% | 52,808 psi | 85% | 2736 fps | 99.6% |
| Hodgdon H4198 | <<locked>> | 88% | 53,766 psi | 86% | 2635 fps | 99.8% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 50,937 psi | 82% | 2723 fps | 97.1% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 46,151 psi | 74% | 2687 fps | 96.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,460 psi | 52% | 1598 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 49,966 psi | 80% | 2684 fps | 96.7% |
| IMR 3031ᴾ | <<locked>> | 100% | 48,385 psi | 78% | 2726 fps | 100% |
| IMR 4198 | <<locked>> | 94% | 54,027 psi | 87% | 2661 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 53,940 psi | 86% | 2589 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 54,027 psi | 87% | 2733 fps | 98.2% |
| Lovex D073.4 | <<locked>> | 90% | 55,013 psi | 88% | 2746 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 96% | 54,201 psi | 87% | 2730 fps | 98.9% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 47,993 psi | 77% | 2694 fps | 98.7% |
| Lovex S053 | <<locked>> | 86% | 55,550 psi | 89% | 2572 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 52,707 psi | 85% | 2657 fps | 96.7% |
| Lovex S062ᴾ | <<locked>> | 100% | 43,613 psi | 70% | 2585 fps | 96.3% |
| Norma 200 | <<locked>> | 92% | 55,535 psi | 89% | 2707 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 49,153 psi | 79% | 2664 fps | 97.5% |
| Norma 202ᴾ | <<locked>> | 100% | 49,487 psi | 79% | 2687 fps | 99.4% |
| Ramshot Wild Boarᴾ | <<locked>> | 100% | 53,737 psi | 86% | 2762 fps | 96.9% |
| Ramshot X-Terminator | <<locked>> | 96% | 53,461 psi | 86% | 2697 fps | 96.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,445 psi | 52% | 1637 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 53,911 psi | 86% | 2625 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 54,723 psi | 88% | 2740 fps | 99.2% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 53,432 psi | 86% | 2713 fps | 99.5% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 46,543 psi | 75% | 2612 fps | 96.9% |
| Shooters World AR Plus | <<locked>> | 90% | 55,013 psi | 88% | 2746 fps | 99.3% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 47,993 psi | 77% | 2694 fps | 98.7% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 43,613 psi | 70% | 2585 fps | 96.3% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 55,883 psi | 90% | 2710 fps | 98% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 56,202 psi | 90% | 2425 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 53,824 psi | 86% | 2743 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 53,751 psi | 86% | 2703 fps | 100% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 49,385 psi | 79% | 2684 fps | 96% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 53,142 psi | 85% | 2644 fps | 99.5% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 42,511 psi | 68% | 2497 fps | 99% |
| Somchem S321 | <<locked>> | 98% | 55,767 psi | 89% | 2779 fps | 98.7% |
| Somchem S335ᴾ | <<locked>> | 100% | 50,966 psi | 82% | 2638 fps | 99.8% |
| Somchem S341ᴾ | <<locked>> | 100% | 52,011 psi | 83% | 2707 fps | 96.3% |
| Vihtavuori N120 | <<locked>> | 90% | 55,042 psi | 88% | 2615 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 56,159 psi | 90% | 2677 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 52,272 psi | 84% | 2641 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 44,106 psi | 71% | 2605 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 46,804 psi | 75% | 2621 fps | 99.2% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 55,230 psi | 89% | 2740 fps | 98.4% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 44,947 psi | 72% | 2608 fps | 98.6% |
| Winchester 748ᴾ | <<locked>> | 100% | 52,982 psi | 85% | 2779 fps | 98.8% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 48,530 psi | 78% | 2690 fps | 96.5% |
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 1680 | <<locked>> | 80% | 44,570 psi | 71% | 2480 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 29,080 psi | 47% | 2254 fps | 97.4% |
| Accurate 2200 | <<locked>> | 88% | 50,560 psi | 81% | 2687 fps | 95.3% |
| Accurate 2230 | <<locked>> | 88% | 50,618 psi | 81% | 2694 fps | 95.8% |
| Accurate 2460 | <<locked>> | 82% | 33,156 psi | 53% | 2365 fps | 95.6% |
| Accurate 2495 | <<locked>> | 82% | 22,800 psi | 37% | 2159 fps | 95.1% |
| Accurate 2520 | <<locked>> | 86% | 33,112 psi | 53% | 2405 fps | 95.2% |
| Accurate 4064 | <<locked>> | 92% | 30,255 psi | 49% | 2369 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 38,203 psi | 61% | 2365 fps | 98.4% |
| Accurate LT-32 | <<locked>> | 80% | 38,638 psi | 62% | 2372 fps | 96.7% |
| ADI AR 2206H | <<locked>> | 96% | 44,831 psi | 72% | 2615 fps | 95% |
| ADI AR 2207 | <<locked>> | 80% | 40,161 psi | 64% | 2454 fps | 100% |
| ADI AR 2219 | 34.1 gr | 80% | 35,607 psi | 57% | 2434 fps | 97.7% |
| ADI Benchmark 8208 | <<locked>> | 90% | 39,465 psi | 63% | 2487 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 26,643 psi | 43% | 2264 fps | 98.8% |
| Alliant Power Pro 1200-R | 36.3 gr | 88% | 42,047 psi | 67% | 2618 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 33,591 psi | 54% | 2365 fps | 99.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 41,481 psi | 67% | 2461 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 36,318 psi | 58% | 2352 fps | 98.3% |
| Hodgdon Benchmark | <<locked>> | 86% | 37,434 psi | 60% | 2402 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 92% | 39,001 psi | 63% | 2543 fps | 95.7% |
| Hodgdon CFE223 | <<locked>> | 96% | 50,821 psi | 81% | 2782 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 80% | 32,561 psi | 52% | 2365 fps | 96.8% |
| Hodgdon H335 | <<locked>> | 80% | 32,532 psi | 52% | 2369 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 80% | 42,221 psi | 68% | 2454 fps | 98.7% |
| Hodgdon H4895 | <<locked>> | 94% | 42,279 psi | 68% | 2575 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 43,134 psi | 69% | 2631 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,786 psi | 38% | 1424 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 44,193 psi | 71% | 2589 fps | 95.3% |
| IMR 3031 | <<locked>> | 82% | 27,238 psi | 44% | 2283 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 35,621 psi | 57% | 2365 fps | 99.9% |
| IMR 4227 | <<locked>> | 80% | 47,819 psi | 77% | 2503 fps | 100% |
| IMR 8208 XBR | <<locked>> | 90% | 39,465 psi | 63% | 2487 fps | 95% |
| Lovex D073.4 | <<locked>> | 80% | 38,435 psi | 62% | 2477 fps | 96.6% |
| Lovex D073.5 | <<locked>> | 86% | 37,811 psi | 61% | 2464 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 90% | 33,678 psi | 54% | 2431 fps | 95.4% |
| Lovex S053 | <<locked>> | 80% | 46,775 psi | 75% | 2457 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 46,717 psi | 75% | 2566 fps | 95.4% |
| Lovex S062 | <<locked>> | 98% | 40,915 psi | 66% | 2536 fps | 95.6% |
| Norma 200 | <<locked>> | 80% | 38,043 psi | 61% | 2441 fps | 100% |
| Norma 201 | <<locked>> | 94% | 40,698 psi | 65% | 2516 fps | 95.5% |
| Norma 202 | <<locked>> | 86% | 31,444 psi | 50% | 2346 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 96% | 46,760 psi | 75% | 2651 fps | 95.3% |
| Ramshot X-Terminator | <<locked>> | 92% | 46,746 psi | 75% | 2589 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,627 psi | 38% | 1457 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 47,601 psi | 76% | 2536 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 34,534 psi | 55% | 2388 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 84% | 32,837 psi | 53% | 2339 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 96% | 41,075 psi | 66% | 2516 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 38,435 psi | 62% | 2477 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 90% | 33,678 psi | 54% | 2431 fps | 95.4% |
| Shooters World Precision | <<locked>> | 98% | 40,915 psi | 66% | 2536 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 42,351 psi | 68% | 2500 fps | 95.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 43,120 psi | 69% | 2260 fps | 100% |
| SNPE Vectan SP 10 | 35.2 gr | 80% | 35,766 psi | 57% | 2431 fps | 96.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 34,360 psi | 55% | 2375 fps | 98.2% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 46,108 psi | 74% | 2631 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 32,227 psi | 52% | 2277 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 29,196 psi | 47% | 2224 fps | 95.5% |
| Somchem S321 | <<locked>> | 88% | 39,291 psi | 63% | 2510 fps | 95.4% |
| Somchem S335 | <<locked>> | 82% | 29,298 psi | 47% | 2231 fps | 95.4% |
| Somchem S341 | <<locked>> | 98% | 48,486 psi | 78% | 2651 fps | 95.6% |
| Vihtavuori N120 | <<locked>> | 80% | 40,335 psi | 65% | 2415 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 32,358 psi | 52% | 2290 fps | 98.9% |
| Vihtavuori N133 | <<locked>> | 80% | 28,079 psi | 45% | 2198 fps | 96.8% |
| Vihtavuori N135 | <<locked>> | 82% | 24,743 psi | 40% | 2185 fps | 95.7% |
| Vihtavuori N140 | <<locked>> | 86% | 29,878 psi | 48% | 2287 fps | 95% |
| Vihtavuori N530 | <<locked>> | 90% | 39,392 psi | 63% | 2484 fps | 95% |
| Vihtavuori N540 | <<locked>> | 90% | 32,460 psi | 52% | 2365 fps | 95.4% |
| Winchester 748 | <<locked>> | 90% | 37,608 psi | 60% | 2510 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 98% | 45,295 psi | 73% | 2635 fps | 95.8% |
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 71 powders for .300 CR loaded with the .308 | 150gr | Hornady ECX. Hodgdon CFE223 delivers the highest muzzle velocity at 2,838 fps; across all powders the maximum-charge window runs from 1,598 fps to 2,838 fps. Accurate 2015 gives the best case fill at 100 %, and 71 of the 71 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 1:13.0 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, SNPE Vectan SP 10, ADI AR 2219 rank at the top here: for .300 CR with the .308 | 150gr | Hornady ECX 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.