Load Specifications
Load data in caliber .300 CR with .308 | 150gr | Barnes MRX BT bullet and 65 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, ADI AR 2219 and Hodgdon H335.
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>> | 88% | 55,869 psi | 90% | 2618 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 52,170 psi | 84% | 2651 fps | 100% |
| Accurate 2200 | <<locked>> | 92% | 55,259 psi | 89% | 2733 fps | 95.8% |
| Accurate 2230 | <<locked>> | 92% | 55,724 psi | 89% | 2743 fps | 96.3% |
| Accurate 2460 | <<locked>> | 98% | 54,911 psi | 88% | 2717 fps | 99.5% |
| Accurate 2495ᴾ | <<locked>> | 100% | 39,900 psi | 64% | 2539 fps | 99.7% |
| Accurate 2520ᴾ | <<locked>> | 100% | 51,503 psi | 83% | 2710 fps | 98.9% |
| Accurate 4064ᴾ | <<locked>> | 100% | 37,115 psi | 60% | 2507 fps | 97.5% |
| Accurate LT-30 | <<locked>> | 94% | 56,405 psi | 90% | 2628 fps | 100% |
| Accurate LT-32 | <<locked>> | 92% | 53,417 psi | 86% | 2595 fps | 99% |
| ADI AR 2207 | <<locked>> | 92% | 55,883 psi | 90% | 2657 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 54,665 psi | 88% | 2733 fps | 99.9% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 51,590 psi | 83% | 2671 fps | 97.4% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 48,776 psi | 78% | 2684 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 98% | 55,796 psi | 89% | 2825 fps | 97.8% |
| Alliant Reloder-10x | <<locked>> | 96% | 52,968 psi | 85% | 2674 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 54,215 psi | 87% | 2628 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 54,853 psi | 88% | 2625 fps | 100% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 54,897 psi | 88% | 2674 fps | 98.4% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 48,805 psi | 78% | 2690 fps | 97.6% |
| Hodgdon CFE223ᴾ | <<locked>> | 100% | 55,376 psi | 89% | 2825 fps | 96.1% |
| Hodgdon H322 | <<locked>> | 98% | 56,057 psi | 90% | 2753 fps | 100% |
| Hodgdon H335 | <<locked>> | 96% | 54,027 psi | 87% | 2730 fps | 99.5% |
| Hodgdon H4198 | <<locked>> | 90% | 55,288 psi | 89% | 2631 fps | 99.8% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 48,428 psi | 78% | 2661 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,169 psi | 52% | 1575 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 47,732 psi | 77% | 2621 fps | 95.8% |
| IMR 3031ᴾ | <<locked>> | 100% | 46,035 psi | 74% | 2671 fps | 99.8% |
| IMR 4198 | <<locked>> | 96% | 54,998 psi | 88% | 2651 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 55,114 psi | 88% | 2582 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 51,590 psi | 83% | 2671 fps | 97.4% |
| Lovex D073.4 | <<locked>> | 92% | 56,188 psi | 90% | 2740 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 98% | 55,245 psi | 89% | 2720 fps | 98.7% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 45,049 psi | 72% | 2625 fps | 98% |
| Lovex S053 | <<locked>> | 86% | 53,548 psi | 86% | 2530 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 50,734 psi | 81% | 2602 fps | 95.8% |
| Norma 200 | <<locked>> | 92% | 53,084 psi | 85% | 2657 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 47,007 psi | 75% | 2605 fps | 96.7% |
| Norma 202ᴾ | <<locked>> | 100% | 46,905 psi | 75% | 2628 fps | 98.8% |
| Ramshot Wild Boarᴾ | <<locked>> | 100% | 50,763 psi | 81% | 2690 fps | 95.8% |
| Ramshot X-Terminator | <<locked>> | 98% | 54,563 psi | 87% | 2684 fps | 96.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,807 psi | 51% | 1608 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 55,158 psi | 88% | 2621 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 55,608 psi | 89% | 2730 fps | 99.1% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 50,981 psi | 82% | 2657 fps | 99.1% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 44,092 psi | 71% | 2549 fps | 96% |
| Shooters World AR Plus | <<locked>> | 92% | 56,188 psi | 90% | 2740 fps | 99.2% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 45,049 psi | 72% | 2625 fps | 98% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 53,345 psi | 86% | 2651 fps | 97.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 54,157 psi | 87% | 2385 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 54,940 psi | 88% | 2736 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 54,433 psi | 87% | 2690 fps | 100% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 50,821 psi | 81% | 2589 fps | 99.1% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 40,524 psi | 65% | 2441 fps | 98.4% |
| Somchem S321 | <<locked>> | 98% | 52,968 psi | 85% | 2717 fps | 98% |
| Somchem S335ᴾ | <<locked>> | 100% | 48,892 psi | 78% | 2585 fps | 99.5% |
| Vihtavuori N110 | <<locked>> | 82% | 55,622 psi | 89% | 2467 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 55,970 psi | 90% | 2608 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 54,027 psi | 87% | 2628 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 49,893 psi | 80% | 2585 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 41,655 psi | 67% | 2549 fps | 99.8% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 44,338 psi | 71% | 2559 fps | 98.7% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 52,605 psi | 84% | 2677 fps | 97.6% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 42,786 psi | 69% | 2549 fps | 97.9% |
| Winchester 748ᴾ | <<locked>> | 100% | 50,270 psi | 81% | 2713 fps | 98.1% |
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% | 42,844 psi | 69% | 2434 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 27,615 psi | 44% | 2201 fps | 96.5% |
| Accurate 2200 | <<locked>> | 90% | 51,692 psi | 83% | 2680 fps | 95.1% |
| Accurate 2230 | <<locked>> | 90% | 51,547 psi | 83% | 2684 fps | 95.5% |
| Accurate 2460 | <<locked>> | 84% | 33,750 psi | 54% | 2362 fps | 95.5% |
| Accurate 2495 | <<locked>> | 86% | 24,555 psi | 39% | 2198 fps | 95.7% |
| Accurate 2520 | <<locked>> | 90% | 35,940 psi | 58% | 2448 fps | 95.8% |
| Accurate 4064 | <<locked>> | 94% | 30,472 psi | 49% | 2359 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 36,767 psi | 59% | 2316 fps | 97.8% |
| Accurate LT-32 | <<locked>> | 80% | 37,144 psi | 60% | 2320 fps | 95.9% |
| ADI AR 2207 | <<locked>> | 80% | 38,566 psi | 62% | 2408 fps | 100% |
| ADI AR 2219 | 32.6 gr | 80% | 33,939 psi | 54% | 2379 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 94% | 42,844 psi | 69% | 2530 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 25,367 psi | 41% | 2208 fps | 98% |
| Alliant Power Pro 1200-R | 36.3 gr | 92% | 45,600 psi | 73% | 2661 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 32,198 psi | 52% | 2320 fps | 98.9% |
| Alliant Reloder-7 | <<locked>> | 80% | 39,740 psi | 64% | 2411 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 34,969 psi | 56% | 2306 fps | 97.6% |
| Hodgdon Benchmark | <<locked>> | 90% | 40,799 psi | 65% | 2448 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 94% | 39,653 psi | 64% | 2533 fps | 95.5% |
| Hodgdon CFE223 | <<locked>> | 98% | 51,474 psi | 83% | 2762 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 30,980 psi | 50% | 2306 fps | 95.8% |
| Hodgdon H335 | 34.6 gr | 82% | 33,475 psi | 54% | 2372 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 80% | 40,625 psi | 65% | 2402 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 98% | 45,788 psi | 73% | 2618 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,482 psi | 38% | 1401 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 44,730 psi | 72% | 2572 fps | 95% |
| IMR 3031 | <<locked>> | 84% | 27,586 psi | 44% | 2274 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 34,229 psi | 55% | 2316 fps | 99.7% |
| IMR 4227 | <<locked>> | 80% | 46,209 psi | 74% | 2461 fps | 100% |
| IMR 8208 XBR | <<locked>> | 94% | 42,844 psi | 69% | 2530 fps | 95.5% |
| Lovex D073.4 | <<locked>> | 80% | 36,347 psi | 58% | 2418 fps | 95.6% |
| Lovex D073.5 | <<locked>> | 88% | 38,493 psi | 62% | 2457 fps | 95.5% |
| Lovex D073.6 | <<locked>> | 92% | 34,185 psi | 55% | 2425 fps | 95.1% |
| Lovex S053 | <<locked>> | 80% | 45,063 psi | 72% | 2415 fps | 100% |
| Lovex S060 | <<locked>> | 98% | 47,645 psi | 76% | 2556 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 36,318 psi | 58% | 2392 fps | 99.8% |
| Norma 201 | <<locked>> | 96% | 41,205 psi | 66% | 2503 fps | 95.2% |
| Norma 202 | <<locked>> | 88% | 31,734 psi | 51% | 2336 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 98% | 47,616 psi | 76% | 2641 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 96% | 50,850 psi | 82% | 2631 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,308 psi | 37% | 1434 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 45,759 psi | 73% | 2490 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 37,608 psi | 60% | 2434 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 86% | 33,228 psi | 53% | 2333 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 98% | 41,568 psi | 67% | 2503 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 36,347 psi | 58% | 2418 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 92% | 34,185 psi | 55% | 2425 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 43,337 psi | 69% | 2497 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 41,669 psi | 67% | 2224 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 34,156 psi | 55% | 2379 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 32,706 psi | 52% | 2320 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 32,779 psi | 53% | 2270 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 29,849 psi | 48% | 2221 fps | 95.3% |
| Somchem S321 | <<locked>> | 90% | 40,161 psi | 64% | 2507 fps | 95.2% |
| Somchem S335 | <<locked>> | 84% | 29,704 psi | 48% | 2224 fps | 95.1% |
| Vihtavuori N110 | <<locked>> | 80% | 52,388 psi | 84% | 2428 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 38,769 psi | 62% | 2372 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 30,821 psi | 49% | 2238 fps | 98.3% |
| Vihtavuori N133 | <<locked>> | 80% | 26,760 psi | 43% | 2146 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 84% | 24,961 psi | 40% | 2175 fps | 95.4% |
| Vihtavuori N140 | <<locked>> | 90% | 32,227 psi | 52% | 2326 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 94% | 43,033 psi | 69% | 2526 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 92% | 33,040 psi | 53% | 2359 fps | 95.2% |
| Winchester 748 | <<locked>> | 92% | 38,508 psi | 62% | 2503 fps | 95.3% |
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 65 powders for .300 CR loaded with the .308 | 150gr | Barnes MRX BT. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,825 fps; across all powders the maximum-charge window runs from 1,575 fps to 2,825 fps. Accurate 2015 gives the best case fill at 100 %, and 65 of the 65 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:11.5 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, ADI AR 2219, Hodgdon H335 rank at the top here: for .300 CR with the .308 | 150gr | Barnes MRX BT 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.