Load Specifications
Load data in caliber .300 CR with .308 | 166gr | Hammer Stone Hammer bullet and 85 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon CFE223, Alliant Power Pro 1200-R and Accurate 2230.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 84% | 53,896 psi | 86% | 2474 fps | 100% |
| Accurate 2015 | <<locked>> | 98% | 54,969 psi | 88% | 2562 fps | 100% |
| Accurate 2200 | <<locked>> | 88% | 54,128 psi | 87% | 2608 fps | 97.2% |
| Accurate 2230 | <<locked>> | 88% | 53,969 psi | 87% | 2612 fps | 97.5% |
| Accurate 2460 | <<locked>> | 94% | 53,780 psi | 86% | 2585 fps | 99.9% |
| Accurate 2495ᴾ | <<locked>> | 100% | 46,354 psi | 74% | 2516 fps | 100% |
| Accurate 2520 | <<locked>> | 98% | 54,737 psi | 88% | 2635 fps | 99.8% |
| Accurate 4064ᴾ | <<locked>> | 100% | 43,062 psi | 69% | 2493 fps | 99.5% |
| Accurate LT-30 | <<locked>> | 90% | 54,766 psi | 88% | 2493 fps | 100% |
| Accurate LT-32 | <<locked>> | 90% | 55,230 psi | 89% | 2510 fps | 99.8% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 54,476 psi | 87% | 2631 fps | 98.1% |
| ADI AR 2207 | <<locked>> | 88% | 54,969 psi | 88% | 2516 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 53,417 psi | 86% | 2595 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 98% | 54,012 psi | 87% | 2595 fps | 98.9% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 55,100 psi | 88% | 2631 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 94% | 54,853 psi | 88% | 2690 fps | 98.8% |
| Alliant Power Pro 2000-MRᴾ | <<locked>> | 100% | 50,894 psi | 82% | 2657 fps | 96.1% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 43,511 psi | 70% | 2490 fps | 97% |
| Alliant Reloder-10x | <<locked>> | 94% | 55,695 psi | 89% | 2582 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 48,022 psi | 77% | 2559 fps | 96.4% |
| Alliant Reloder-7 | <<locked>> | 86% | 53,156 psi | 85% | 2493 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 53,272 psi | 85% | 2493 fps | 100% |
| Baschieri & Pellagri 107ᴾ | <<locked>> | 100% | 54,114 psi | 87% | 2638 fps | 96.8% |
| Bofors RP3ᴾ | <<locked>> | 100% | 42,917 psi | 69% | 2497 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 96% | 54,114 psi | 87% | 2552 fps | 99.3% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 55,608 psi | 89% | 2671 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 96% | 54,056 psi | 87% | 2700 fps | 97.5% |
| Hodgdon H322 | <<locked>> | 94% | 55,172 psi | 88% | 2618 fps | 100% |
| Hodgdon H335 | <<locked>> | 94% | 56,347 psi | 90% | 2641 fps | 100% |
| Hodgdon H4198 | <<locked>> | 86% | 53,359 psi | 86% | 2490 fps | 100% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 54,795 psi | 88% | 2644 fps | 98.6% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 49,458 psi | 79% | 2615 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,924 psi | 53% | 1512 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 53,185 psi | 85% | 2598 fps | 98.2% |
| IMR 3031ᴾ | <<locked>> | 100% | 52,359 psi | 84% | 2638 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 48,370 psi | 78% | 2513 fps | 96.4% |
| IMR 4198 | <<locked>> | 92% | 53,838 psi | 86% | 2510 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 53,519 psi | 86% | 2438 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 49,110 psi | 79% | 2592 fps | 97.3% |
| IMR 8208 XBR | <<locked>> | 98% | 54,012 psi | 87% | 2595 fps | 98.9% |
| Lovex D073.4 | <<locked>> | 88% | 54,940 psi | 88% | 2605 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 94% | 54,099 psi | 87% | 2592 fps | 99.5% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 51,938 psi | 83% | 2612 fps | 99.7% |
| Lovex S053 | <<locked>> | 84% | 55,187 psi | 88% | 2421 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 56,072 psi | 90% | 2575 fps | 98.2% |
| Lovex S062ᴾ | <<locked>> | 100% | 46,963 psi | 75% | 2513 fps | 98.1% |
| Norma 200 | <<locked>> | 90% | 55,521 psi | 89% | 2559 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 52,779 psi | 85% | 2582 fps | 98.9% |
| Norma 202ᴾ | <<locked>> | 100% | 52,895 psi | 85% | 2598 fps | 99.9% |
| Norma 203Bᴾ | <<locked>> | 100% | 47,021 psi | 75% | 2549 fps | 96.8% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 47,688 psi | 76% | 2566 fps | 96.5% |
| Ramshot Wild Boar | <<locked>> | 98% | 53,722 psi | 86% | 2628 fps | 97.9% |
| Ramshot X-Terminator | <<locked>> | 94% | 53,011 psi | 85% | 2559 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,025 psi | 53% | 1549 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 53,548 psi | 86% | 2474 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 54,592 psi | 88% | 2602 fps | 99.7% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 50,502 psi | 81% | 2657 fps | 96.9% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 41,814 psi | 67% | 2523 fps | 97.9% |
| Rottweil R 901 | <<locked>> | 98% | 53,722 psi | 86% | 2579 fps | 99.9% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 49,588 psi | 80% | 2526 fps | 98.4% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 39,697 psi | 64% | 2428 fps | 95.8% |
| Shooters World AR Plus | <<locked>> | 88% | 54,940 psi | 88% | 2605 fps | 99.8% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 51,938 psi | 83% | 2612 fps | 99.7% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 46,963 psi | 75% | 2513 fps | 98.1% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 55,143 psi | 88% | 2569 fps | 98.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 55,477 psi | 89% | 2280 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 53,780 psi | 86% | 2602 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 53,621 psi | 86% | 2556 fps | 100% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 52,837 psi | 85% | 2605 fps | 97.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 52,968 psi | 85% | 2507 fps | 99.9% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 45,571 psi | 73% | 2418 fps | 99.8% |
| Somchem S321 | <<locked>> | 96% | 55,608 psi | 89% | 2641 fps | 99.3% |
| Somchem S335ᴾ | <<locked>> | 100% | 54,563 psi | 87% | 2549 fps | 100% |
| Somchem S341ᴾ | <<locked>> | 100% | 55,492 psi | 89% | 2621 fps | 98% |
| Somchem S355ᴾ | <<locked>> | 100% | 41,437 psi | 66% | 2444 fps | 96% |
| Vihtavuori N120 | <<locked>> | 88% | 54,969 psi | 88% | 2467 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 55,999 psi | 90% | 2533 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 55,796 psi | 89% | 2543 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 47,718 psi | 77% | 2520 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 50,024 psi | 80% | 2533 fps | 99.9% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 39,813 psi | 64% | 2388 fps | 96.9% |
| Vihtavuori N530 | <<locked>> | 98% | 55,129 psi | 88% | 2602 fps | 99.1% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 48,167 psi | 77% | 2526 fps | 99.6% |
| Winchester 748 | <<locked>> | 98% | 52,924 psi | 85% | 2641 fps | 99.4% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 51,721 psi | 83% | 2608 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% | 47,181 psi | 76% | 2385 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 31,198 psi | 50% | 2182 fps | 98.8% |
| Accurate 2200 | <<locked>> | 82% | 44,193 psi | 71% | 2451 fps | 95% |
| Accurate 2230 | 35.8 gr | 82% | 43,540 psi | 70% | 2451 fps | 95.3% |
| Accurate 2460 | <<locked>> | 80% | 33,330 psi | 53% | 2251 fps | 96.9% |
| Accurate 2495 | <<locked>> | 80% | 23,322 psi | 37% | 2060 fps | 96.6% |
| Accurate 2520 | <<locked>> | 82% | 31,111 psi | 50% | 2238 fps | 95.7% |
| Accurate 4064 | <<locked>> | 86% | 27,180 psi | 44% | 2172 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 40,277 psi | 65% | 2280 fps | 99.4% |
| Accurate LT-32 | <<locked>> | 80% | 40,654 psi | 65% | 2290 fps | 98.2% |
| ADI AR 2206H | <<locked>> | 92% | 42,032 psi | 67% | 2438 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 42,989 psi | 69% | 2359 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 37,811 psi | 61% | 2352 fps | 99% |
| ADI Benchmark 8208 | <<locked>> | 86% | 37,072 psi | 59% | 2316 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 28,514 psi | 46% | 2198 fps | 99.8% |
| Alliant Power Pro 1200-R | 33.9 gr | 84% | 39,479 psi | 63% | 2438 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 47,384 psi | 76% | 2598 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 38,276 psi | 61% | 2395 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 36,143 psi | 58% | 2290 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 98% | 44,701 psi | 72% | 2507 fps | 95.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 43,903 psi | 70% | 2365 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 38,406 psi | 62% | 2270 fps | 99.3% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 47,456 psi | 76% | 2539 fps | 95.4% |
| Bofors RP3 | <<locked>> | 96% | 37,449 psi | 60% | 2398 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 82% | 35,201 psi | 56% | 2238 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 86% | 34,258 psi | 55% | 2323 fps | 95.4% |
| Hodgdon CFE223 | 39.6 gr | 90% | 44,121 psi | 71% | 2539 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 34,795 psi | 56% | 2293 fps | 98.4% |
| Hodgdon H335 | <<locked>> | 80% | 34,969 psi | 56% | 2303 fps | 97.6% |
| Hodgdon H4198 | <<locked>> | 80% | 44,454 psi | 71% | 2362 fps | 99.6% |
| Hodgdon H4895 | <<locked>> | 90% | 39,639 psi | 64% | 2402 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 37,985 psi | 61% | 2411 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,294 psi | 39% | 1348 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 38,827 psi | 62% | 2365 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 27,340 psi | 44% | 2172 fps | 96.9% |
| IMR 4064 | <<locked>> | 96% | 42,583 psi | 68% | 2418 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 37,869 psi | 61% | 2277 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 50,125 psi | 80% | 2395 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 40,205 psi | 64% | 2441 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 86% | 37,072 psi | 59% | 2316 fps | 95.5% |
| Lovex D073.4 | <<locked>> | 80% | 41,118 psi | 66% | 2398 fps | 98.2% |
| Lovex D073.5 | <<locked>> | 80% | 32,967 psi | 53% | 2241 fps | 95.3% |
| Lovex D073.6 | <<locked>> | 84% | 29,675 psi | 48% | 2218 fps | 95% |
| Lovex S053 | <<locked>> | 80% | 49,385 psi | 79% | 2352 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 41,249 psi | 66% | 2346 fps | 95.2% |
| Lovex S062 | <<locked>> | 92% | 36,361 psi | 58% | 2326 fps | 95.5% |
| Norma 200 | <<locked>> | 80% | 40,611 psi | 65% | 2349 fps | 100% |
| Norma 201 | <<locked>> | 88% | 35,969 psi | 58% | 2300 fps | 95.3% |
| Norma 202 | <<locked>> | 80% | 27,847 psi | 45% | 2139 fps | 95% |
| Norma 203B | <<locked>> | 96% | 41,031 psi | 66% | 2448 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 98% | 44,469 psi | 71% | 2510 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 90% | 40,843 psi | 65% | 2421 fps | 95% |
| Ramshot X-Terminator | <<locked>> | 88% | 43,540 psi | 70% | 2411 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,207 psi | 39% | 1381 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 50,256 psi | 81% | 2431 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 34,432 psi | 55% | 2264 fps | 96.3% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 43,990 psi | 71% | 2552 fps | 95.3% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 34,461 psi | 55% | 2362 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 31,169 psi | 50% | 2182 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 90% | 36,303 psi | 58% | 2300 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 98% | 37,057 psi | 59% | 2379 fps | 95% |
| Shooters World AR Plus | <<locked>> | 80% | 41,118 psi | 66% | 2398 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 84% | 29,675 psi | 48% | 2218 fps | 95% |
| Shooters World Precision | <<locked>> | 92% | 36,361 psi | 58% | 2326 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 39,363 psi | 63% | 2326 fps | 95.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 45,121 psi | 72% | 2156 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 38,421 psi | 62% | 2359 fps | 98.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 36,637 psi | 59% | 2293 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 40,538 psi | 65% | 2408 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 30,052 psi | 48% | 2113 fps | 95.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 25,889 psi | 42% | 2031 fps | 95.2% |
| Somchem S321 | <<locked>> | 82% | 34,360 psi | 55% | 2290 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 29,370 psi | 47% | 2119 fps | 96.6% |
| Somchem S341 | <<locked>> | 92% | 42,366 psi | 68% | 2428 fps | 95.3% |
| Somchem S355 | <<locked>> | 98% | 38,841 psi | 62% | 2395 fps | 95.2% |
| Vihtavuori N120 | <<locked>> | 80% | 43,105 psi | 69% | 2316 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 34,360 psi | 55% | 2208 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 80% | 29,878 psi | 48% | 2126 fps | 98.4% |
| Vihtavuori N135 | <<locked>> | 80% | 24,845 psi | 40% | 2077 fps | 97% |
| Vihtavuori N140 | <<locked>> | 82% | 28,007 psi | 45% | 2126 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 96% | 34,954 psi | 56% | 2297 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 86% | 36,970 psi | 59% | 2313 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 84% | 28,587 psi | 46% | 2156 fps | 95.1% |
| Winchester 748 | <<locked>> | 84% | 33,156 psi | 53% | 2293 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 92% | 39,523 psi | 63% | 2408 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 85 powders for .300 CR loaded with the .308 | 166gr | Hammer Stone Hammer. Hodgdon CFE223 delivers the highest muzzle velocity at 2,700 fps; across all powders the maximum-charge window runs from 1,512 fps to 2,700 fps. Accurate 2495 gives the best case fill at 100 %, and 85 of the 85 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 166.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, ADI AR 2206H 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. Hodgdon CFE223, Alliant Power Pro 1200-R, Accurate 2230 rank at the top here: for .300 CR with the .308 | 166gr | Hammer Stone Hammer 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.