Load Specifications
Load data in caliber .300 CR with .308 | 145gr | SUS-TAC Blackout (S/B) bullet and 61 powders. The key underlying parameters are shown in the table above.
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% | 53,388 psi | 86% | 2635 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 53,592 psi | 86% | 2720 fps | 100% |
| Accurate 2460 | <<locked>> | 98% | 56,115 psi | 90% | 2782 fps | 99.5% |
| Accurate 2495ᴾ | <<locked>> | 100% | 41,669 psi | 67% | 2612 fps | 99.7% |
| Accurate 2520ᴾ | <<locked>> | 100% | 52,620 psi | 84% | 2776 fps | 98.9% |
| Accurate 4064ᴾ | <<locked>> | 100% | 38,740 psi | 62% | 2575 fps | 97.6% |
| Accurate LT-30 | <<locked>> | 92% | 53,780 psi | 86% | 2644 fps | 99.8% |
| Accurate LT-32 | <<locked>> | 92% | 54,273 psi | 87% | 2654 fps | 99% |
| ADI AR 2207 | <<locked>> | 90% | 53,606 psi | 86% | 2680 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 55,825 psi | 90% | 2802 fps | 99.9% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 52,533 psi | 84% | 2736 fps | 97.4% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 49,530 psi | 79% | 2746 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 96% | 53,011 psi | 85% | 2835 fps | 97.1% |
| Alliant Reloder-10x | <<locked>> | 96% | 54,085 psi | 87% | 2740 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 55,419 psi | 89% | 2694 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 55,666 psi | 89% | 2687 fps | 100% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 55,985 psi | 90% | 2736 fps | 98.4% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 50,038 psi | 80% | 2759 fps | 97.6% |
| Hodgdon H322 | <<locked>> | 96% | 53,563 psi | 86% | 2772 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 96% | 54,969 psi | 88% | 2795 fps | 99.5% |
| Hodgdon H4198 | <<locked>> | 90% | 56,260 psi | 90% | 2697 fps | 99.8% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 49,530 psi | 79% | 2726 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,372 psi | 52% | 1611 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 48,631 psi | 78% | 2684 fps | 95.7% |
| IMR 3031ᴾ | <<locked>> | 100% | 47,210 psi | 76% | 2740 fps | 99.8% |
| IMR 4198 | <<locked>> | 96% | 55,550 psi | 89% | 2710 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 55,970 psi | 90% | 2644 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 52,533 psi | 84% | 2736 fps | 97.4% |
| Lovex D073.4 | <<locked>> | 90% | 53,388 psi | 86% | 2749 fps | 98.8% |
| Lovex D073.5 | <<locked>> | 98% | 56,434 psi | 90% | 2785 fps | 98.7% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 46,659 psi | 75% | 2697 fps | 98.1% |
| Lovex S053 | <<locked>> | 86% | 54,549 psi | 87% | 2592 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 51,430 psi | 82% | 2661 fps | 95.7% |
| Norma 200 | <<locked>> | 92% | 54,563 psi | 87% | 2726 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 48,385 psi | 78% | 2674 fps | 96.7% |
| Norma 202ᴾ | <<locked>> | 100% | 48,124 psi | 77% | 2694 fps | 98.8% |
| Ramshot Wild Boarᴾ | <<locked>> | 100% | 51,909 psi | 83% | 2756 fps | 95.8% |
| Ramshot X-Terminator | <<locked>> | 98% | 55,390 psi | 89% | 2746 fps | 96.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,401 psi | 52% | 1650 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 55,927 psi | 90% | 2680 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 53,229 psi | 85% | 2746 fps | 98.7% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 52,301 psi | 84% | 2723 fps | 99.1% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 45,440 psi | 73% | 2615 fps | 96% |
| Shooters World AR Plus | <<locked>> | 90% | 53,388 psi | 86% | 2749 fps | 98.8% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 46,659 psi | 75% | 2697 fps | 98.1% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 54,346 psi | 87% | 2713 fps | 97.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 55,201 psi | 89% | 2444 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 56,014 psi | 90% | 2802 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 55,332 psi | 89% | 2753 fps | 100% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 51,706 psi | 83% | 2648 fps | 99.1% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 41,336 psi | 66% | 2500 fps | 98.4% |
| Somchem S321 | <<locked>> | 98% | 53,882 psi | 86% | 2779 fps | 97.9% |
| Somchem S335ᴾ | <<locked>> | 100% | 50,169 psi | 80% | 2651 fps | 99.5% |
| Vihtavuori N120 | <<locked>> | 90% | 53,679 psi | 86% | 2631 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 54,998 psi | 88% | 2690 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 50,691 psi | 81% | 2648 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 42,612 psi | 68% | 2612 fps | 99.8% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 45,469 psi | 73% | 2625 fps | 98.7% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 53,650 psi | 86% | 2743 fps | 97.6% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 43,787 psi | 70% | 2615 fps | 98% |
| Winchester 748ᴾ | <<locked>> | 100% | 51,082 psi | 82% | 2776 fps | 98.1% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 43,976 psi | 71% | 2497 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 28,645 psi | 46% | 2260 fps | 96.6% |
| Accurate 2460 | <<locked>> | 84% | 35,085 psi | 56% | 2428 fps | 95.6% |
| Accurate 2495 | <<locked>> | 84% | 24,337 psi | 39% | 2221 fps | 95.2% |
| Accurate 2520 | <<locked>> | 88% | 34,693 psi | 56% | 2461 fps | 95% |
| Accurate 4064 | <<locked>> | 94% | 31,879 psi | 51% | 2431 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 37,652 psi | 60% | 2375 fps | 97.8% |
| Accurate LT-32 | <<locked>> | 80% | 38,029 psi | 61% | 2382 fps | 95.9% |
| ADI AR 2207 | <<locked>> | 80% | 39,436 psi | 63% | 2467 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 34,824 psi | 56% | 2438 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 94% | 43,729 psi | 70% | 2592 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 26,382 psi | 42% | 2274 fps | 98.2% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 46,572 psi | 75% | 2730 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 33,127 psi | 53% | 2379 fps | 98.9% |
| Alliant Reloder-7 | <<locked>> | 80% | 40,930 psi | 66% | 2474 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 35,636 psi | 57% | 2359 fps | 97.6% |
| Hodgdon Benchmark | <<locked>> | 90% | 41,466 psi | 66% | 2503 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 94% | 40,741 psi | 65% | 2598 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 80% | 31,879 psi | 51% | 2369 fps | 95.8% |
| Hodgdon H335 | <<locked>> | 82% | 34,229 psi | 55% | 2428 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 80% | 41,524 psi | 67% | 2464 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 98% | 46,557 psi | 75% | 2674 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,931 psi | 38% | 1440 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 45,759 psi | 73% | 2635 fps | 95% |
| IMR 3031 | <<locked>> | 84% | 28,529 psi | 46% | 2336 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 34,983 psi | 56% | 2375 fps | 99.7% |
| IMR 4227 | <<locked>> | 80% | 46,862 psi | 75% | 2520 fps | 100% |
| IMR 8208 XBR | <<locked>> | 94% | 43,729 psi | 70% | 2592 fps | 95.5% |
| Lovex D073.4 | <<locked>> | 80% | 37,666 psi | 60% | 2484 fps | 95.7% |
| Lovex D073.5 | <<locked>> | 88% | 39,958 psi | 64% | 2526 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 92% | 35,273 psi | 57% | 2487 fps | 95.2% |
| Lovex S053 | <<locked>> | 80% | 45,934 psi | 74% | 2474 fps | 100% |
| Lovex S060 | <<locked>> | 98% | 48,776 psi | 78% | 2618 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 37,405 psi | 60% | 2451 fps | 99.8% |
| Norma 201 | <<locked>> | 96% | 42,685 psi | 68% | 2575 fps | 95.4% |
| Norma 202 | <<locked>> | 88% | 32,866 psi | 53% | 2402 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 98% | 48,472 psi | 78% | 2703 fps | 95% |
| Ramshot X-Terminator | <<locked>> | 96% | 51,793 psi | 83% | 2694 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,815 psi | 38% | 1473 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 46,775 psi | 75% | 2556 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 38,667 psi | 62% | 2497 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 86% | 34,635 psi | 56% | 2398 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 98% | 42,714 psi | 68% | 2566 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 37,666 psi | 60% | 2484 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 92% | 35,273 psi | 57% | 2487 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 44,266 psi | 71% | 2556 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 42,641 psi | 68% | 2283 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 35,288 psi | 57% | 2444 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 33,765 psi | 54% | 2382 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 33,750 psi | 54% | 2329 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 30,632 psi | 49% | 2277 fps | 95.3% |
| Somchem S321 | <<locked>> | 90% | 41,350 psi | 66% | 2572 fps | 95.3% |
| Somchem S335 | <<locked>> | 84% | 30,734 psi | 49% | 2287 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 39,552 psi | 63% | 2431 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 31,937 psi | 51% | 2300 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 80% | 27,760 psi | 45% | 2208 fps | 96% |
| Vihtavuori N135 | <<locked>> | 84% | 25,991 psi | 42% | 2241 fps | 95.6% |
| Vihtavuori N140 | <<locked>> | 90% | 33,301 psi | 53% | 2388 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 94% | 43,830 psi | 70% | 2585 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 92% | 33,968 psi | 54% | 2418 fps | 95.2% |
| Winchester 748 | <<locked>> | 92% | 39,320 psi | 63% | 2566 fps | 95.2% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 61 powders for .300 CR loaded with the .308 | 145gr | SUS-TAC Blackout (S/B). Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,835 fps; across all powders the maximum-charge window runs from 1,611 fps to 2,835 fps. Accurate 2015 gives the best case fill at 100 %, and 61 of the 61 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 145.0 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.