Load Specifications
Load data in caliber .300 CR with .308 | 148gr | Hasler ARIETE 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, Hodgdon H335 and Hodgdon H322.
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% | 52,895 psi | 85% | 2608 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 52,968 psi | 85% | 2690 fps | 100% |
| Accurate 2200 | <<locked>> | 92% | 56,173 psi | 90% | 2776 fps | 96% |
| Accurate 2230 | <<locked>> | 92% | 56,434 psi | 90% | 2782 fps | 96.5% |
| Accurate 2460 | <<locked>> | 98% | 55,492 psi | 89% | 2753 fps | 99.5% |
| Accurate 2495ᴾ | <<locked>> | 100% | 40,611 psi | 65% | 2579 fps | 99.8% |
| Accurate 2520ᴾ | <<locked>> | 100% | 52,069 psi | 83% | 2746 fps | 99% |
| Accurate 4064ᴾ | <<locked>> | 100% | 37,811 psi | 61% | 2543 fps | 97.7% |
| Accurate LT-30 | <<locked>> | 92% | 53,809 psi | 86% | 2625 fps | 99.9% |
| Accurate LT-32 | <<locked>> | 92% | 54,317 psi | 87% | 2638 fps | 99.2% |
| ADI AR 2207 | <<locked>> | 90% | 53,098 psi | 85% | 2651 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 55,477 psi | 89% | 2776 fps | 100% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 52,547 psi | 84% | 2717 fps | 97.6% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 49,139 psi | 79% | 2717 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 98% | 56,202 psi | 90% | 2861 fps | 97.8% |
| Alliant Reloder-10x | <<locked>> | 96% | 53,476 psi | 86% | 2710 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 54,853 psi | 88% | 2667 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 55,376 psi | 89% | 2661 fps | 100% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 55,550 psi | 89% | 2710 fps | 98.6% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 49,647 psi | 80% | 2733 fps | 97.8% |
| Hodgdon CFE223ᴾ | <<locked>> | 100% | 56,188 psi | 90% | 2867 fps | 96.4% |
| Hodgdon H322 | <<locked>> | 96% | 53,229 psi | 85% | 2746 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 96% | 54,650 psi | 88% | 2769 fps | 99.6% |
| Hodgdon H4198 | <<locked>> | 90% | 55,898 psi | 90% | 2671 fps | 99.8% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 49,458 psi | 79% | 2707 fps | 96.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,227 psi | 52% | 1594 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 48,283 psi | 77% | 2661 fps | 96% |
| IMR 3031ᴾ | <<locked>> | 100% | 46,731 psi | 75% | 2710 fps | 99.8% |
| IMR 4198 | <<locked>> | 96% | 55,216 psi | 89% | 2684 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 56,014 psi | 90% | 2621 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 52,547 psi | 84% | 2717 fps | 97.6% |
| Lovex D073.4 | <<locked>> | 90% | 52,852 psi | 85% | 2723 fps | 98.9% |
| Lovex D073.5 | <<locked>> | 98% | 55,753 psi | 89% | 2756 fps | 98.8% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 46,021 psi | 74% | 2671 fps | 98.2% |
| Lovex S053 | <<locked>> | 86% | 54,041 psi | 87% | 2566 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 51,387 psi | 82% | 2641 fps | 96% |
| Norma 200 | <<locked>> | 92% | 53,708 psi | 86% | 2694 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 47,645 psi | 76% | 2644 fps | 96.9% |
| Norma 202ᴾ | <<locked>> | 100% | 47,587 psi | 76% | 2664 fps | 98.9% |
| Ramshot Wild Boarᴾ | <<locked>> | 100% | 51,576 psi | 83% | 2733 fps | 96.1% |
| Ramshot X-Terminator | <<locked>> | 98% | 54,984 psi | 88% | 2720 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,198 psi | 52% | 1634 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 55,912 psi | 90% | 2657 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 56,260 psi | 90% | 2766 fps | 99.2% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 51,401 psi | 82% | 2690 fps | 99.2% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 44,730 psi | 72% | 2585 fps | 96.1% |
| Shooters World AR Plus | <<locked>> | 90% | 52,852 psi | 85% | 2723 fps | 98.9% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 46,021 psi | 74% | 2671 fps | 98.2% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 53,954 psi | 87% | 2687 fps | 97.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 54,752 psi | 88% | 2418 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 55,579 psi | 89% | 2776 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 54,984 psi | 88% | 2726 fps | 100% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 51,576 psi | 83% | 2628 fps | 99.2% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 41,176 psi | 66% | 2480 fps | 98.6% |
| Somchem S321 | <<locked>> | 98% | 53,853 psi | 86% | 2759 fps | 98.1% |
| Somchem S335ᴾ | <<locked>> | 100% | 49,530 psi | 79% | 2625 fps | 99.5% |
| Vihtavuori N110 | <<locked>> | 82% | 55,956 psi | 90% | 2500 fps | 100% |
| Vihtavuori N120 | <<locked>> | 90% | 53,142 psi | 85% | 2602 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 54,433 psi | 87% | 2664 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 50,691 psi | 81% | 2628 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 42,424 psi | 68% | 2589 fps | 99.8% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 44,947 psi | 72% | 2598 fps | 98.8% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 53,258 psi | 85% | 2717 fps | 97.8% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 43,279 psi | 69% | 2585 fps | 98.1% |
| Winchester 748ᴾ | <<locked>> | 100% | 50,749 psi | 81% | 2749 fps | 98.2% |
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% | 43,424 psi | 70% | 2470 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 27,992 psi | 45% | 2234 fps | 96.7% |
| Accurate 2200 | <<locked>> | 90% | 52,576 psi | 84% | 2723 fps | 95.3% |
| Accurate 2230 | <<locked>> | 90% | 52,344 psi | 84% | 2726 fps | 95.7% |
| Accurate 2460 | <<locked>> | 84% | 34,214 psi | 55% | 2398 fps | 95.7% |
| Accurate 2495 | <<locked>> | 84% | 23,366 psi | 37% | 2185 fps | 95.1% |
| Accurate 2520 | <<locked>> | 88% | 33,953 psi | 54% | 2431 fps | 95.1% |
| Accurate 4064 | <<locked>> | 94% | 30,879 psi | 50% | 2392 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 37,115 psi | 60% | 2349 fps | 97.9% |
| Accurate LT-32 | <<locked>> | 80% | 37,507 psi | 60% | 2356 fps | 96% |
| ADI AR 2207 | <<locked>> | 80% | 39,044 psi | 63% | 2444 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 34,214 psi | 55% | 2411 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 94% | 43,221 psi | 69% | 2566 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 80% | 25,686 psi | 41% | 2241 fps | 98.2% |
| Alliant Power Pro 1200-R | 36.3 gr | 90% | 43,134 psi | 69% | 2648 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 32,648 psi | 52% | 2356 fps | 99% |
| Alliant Reloder-7 | <<locked>> | 80% | 40,176 psi | 64% | 2444 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 35,143 psi | 56% | 2333 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 88% | 38,769 psi | 62% | 2434 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 94% | 40,205 psi | 64% | 2572 fps | 95.7% |
| Hodgdon CFE223 | <<locked>> | 98% | 52,286 psi | 84% | 2808 fps | 95.5% |
| Hodgdon H322 | 32.2 gr | 80% | 31,270 psi | 50% | 2339 fps | 95.9% |
| Hodgdon H335 | 35.4 gr | 82% | 33,895 psi | 54% | 2408 fps | 95.7% |
| Hodgdon H4198 | <<locked>> | 80% | 41,002 psi | 66% | 2438 fps | 98.2% |
| Hodgdon H4895 | <<locked>> | 98% | 46,035 psi | 74% | 2648 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,714 psi | 38% | 1424 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 45,339 psi | 73% | 2612 fps | 95.2% |
| IMR 3031 | <<locked>> | 84% | 28,065 psi | 45% | 2313 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 34,374 psi | 55% | 2346 fps | 99.7% |
| IMR 4227 | <<locked>> | 80% | 46,383 psi | 74% | 2490 fps | 100% |
| IMR 8208 XBR | <<locked>> | 94% | 43,221 psi | 69% | 2566 fps | 95.7% |
| Lovex D073.4 | <<locked>> | 80% | 36,898 psi | 59% | 2454 fps | 95.8% |
| Lovex D073.5 | <<locked>> | 88% | 39,189 psi | 63% | 2497 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 92% | 34,809 psi | 56% | 2461 fps | 95.4% |
| Lovex S053 | <<locked>> | 80% | 45,295 psi | 73% | 2448 fps | 100% |
| Lovex S060 | <<locked>> | 98% | 48,312 psi | 77% | 2592 fps | 95.3% |
| Norma 200 | <<locked>> | 80% | 36,695 psi | 59% | 2425 fps | 99.9% |
| Norma 201 | <<locked>> | 96% | 41,887 psi | 67% | 2546 fps | 95.5% |
| Norma 202 | <<locked>> | 88% | 32,184 psi | 52% | 2372 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 98% | 48,385 psi | 78% | 2684 fps | 95.3% |
| Ramshot X-Terminator | <<locked>> | 94% | 48,298 psi | 77% | 2618 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,540 psi | 38% | 1457 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 46,180 psi | 74% | 2526 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 35,723 psi | 57% | 2421 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 86% | 33,837 psi | 54% | 2369 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 98% | 41,916 psi | 67% | 2536 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 80% | 36,898 psi | 59% | 2454 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 92% | 34,809 psi | 56% | 2461 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 43,700 psi | 70% | 2530 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 42,032 psi | 67% | 2254 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 34,664 psi | 56% | 2415 fps | 95.9% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 33,141 psi | 53% | 2352 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 33,040 psi | 53% | 2300 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 30,008 psi | 48% | 2251 fps | 95.4% |
| Somchem S321 | <<locked>> | 90% | 40,770 psi | 65% | 2546 fps | 95.4% |
| Somchem S335 | <<locked>> | 84% | 30,197 psi | 48% | 2260 fps | 95.4% |
| Vihtavuori N110 | <<locked>> | 80% | 53,171 psi | 85% | 2467 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 39,262 psi | 63% | 2405 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 31,227 psi | 50% | 2270 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 80% | 27,108 psi | 43% | 2178 fps | 96% |
| Vihtavuori N135 | <<locked>> | 84% | 25,425 psi | 41% | 2215 fps | 95.7% |
| Vihtavuori N140 | <<locked>> | 90% | 32,663 psi | 52% | 2359 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 92% | 40,567 psi | 65% | 2510 fps | 95% |
| Vihtavuori N540 | <<locked>> | 92% | 33,330 psi | 53% | 2388 fps | 95.3% |
| Winchester 748 | <<locked>> | 92% | 39,088 psi | 63% | 2543 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 90 powders for .300 CR loaded with the .308 | 148gr | Hasler ARIETE. Hodgdon CFE223 delivers the highest muzzle velocity at 2,867 fps; across all powders the maximum-charge window runs from 1,594 fps to 2,867 fps. Accurate 2015 gives the best case fill at 100 %, and 90 of the 90 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 148.0 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 H335, Hodgdon H322 rank at the top here: for .300 CR with the .308 | 148gr | Hasler ARIETE 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.