Load Specifications
Load data in caliber .300 CR with .308 | 170gr | Swift A-Frame bullet and 90 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 52 and Hodgdon CFE223.
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>> | 82% | 56,086 psi | 90% | 2507 fps | 100% |
| Accurate 2015 | <<locked>> | 94% | 56,115 psi | 90% | 2579 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 53,505 psi | 86% | 2615 fps | 98% |
| Accurate 2230 | <<locked>> | 84% | 54,070 psi | 87% | 2625 fps | 98.4% |
| Accurate 2460 | <<locked>> | 90% | 54,679 psi | 88% | 2602 fps | 100% |
| Accurate 2495ᴾ | <<locked>> | 100% | 55,666 psi | 89% | 2628 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 55,637 psi | 89% | 2651 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 51,663 psi | 83% | 2618 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 53,809 psi | 86% | 2490 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 54,230 psi | 87% | 2510 fps | 100% |
| ADI AR 2206H | <<locked>> | 96% | 55,056 psi | 88% | 2651 fps | 98.9% |
| ADI AR 2207 | <<locked>> | 84% | 54,897 psi | 88% | 2513 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 52,344 psi | 84% | 2592 fps | 97.9% |
| ADI AR 2219 | <<locked>> | 86% | 53,563 psi | 86% | 2602 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 54,607 psi | 88% | 2615 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 94% | 53,084 psi | 85% | 2602 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 55,782 psi | 89% | 2713 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 54,578 psi | 88% | 2743 fps | 98.1% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 50,937 psi | 82% | 2612 fps | 99.1% |
| Alliant Reloder-10x | <<locked>> | 90% | 56,391 psi | 90% | 2589 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 55,317 psi | 89% | 2677 fps | 98.6% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 45,252 psi | 73% | 2598 fps | 97.6% |
| Alliant Reloder-7 | <<locked>> | 84% | 55,927 psi | 90% | 2526 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 56,159 psi | 90% | 2536 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 54,592 psi | 88% | 2661 fps | 98% |
| Bofors RP3ᴾ | <<locked>> | 100% | 50,894 psi | 82% | 2625 fps | 99.1% |
| Hodgdon Benchmark | <<locked>> | 92% | 53,940 psi | 86% | 2562 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 96% | 56,260 psi | 90% | 2687 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 92% | 54,737 psi | 88% | 2726 fps | 98.5% |
| Hodgdon H322 | <<locked>> | 90% | 55,521 psi | 89% | 2628 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 52,968 psi | 85% | 2605 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 53,098 psi | 85% | 2631 fps | 97% |
| Hodgdon H4198 | <<locked>> | 84% | 55,985 psi | 90% | 2536 fps | 100% |
| Hodgdon H4895 | <<locked>> | 96% | 55,477 psi | 89% | 2664 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 53,505 psi | 86% | 2687 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,910 psi | 54% | 1542 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 53,534 psi | 86% | 2618 fps | 99% |
| IMR 3031 | <<locked>> | 96% | 53,650 psi | 86% | 2651 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 55,114 psi | 88% | 2625 fps | 98.5% |
| IMR 4198 | <<locked>> | 88% | 53,737 psi | 86% | 2513 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 53,171 psi | 85% | 2661 fps | 98.8% |
| IMR 8208 XBR | <<locked>> | 94% | 54,607 psi | 88% | 2615 fps | 99.5% |
| Lovex D073.4 | <<locked>> | 84% | 54,795 psi | 88% | 2612 fps | 100% |
| Lovex D073.5 | <<locked>> | 90% | 54,665 psi | 88% | 2608 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 96% | 53,505 psi | 86% | 2635 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 55,796 psi | 89% | 2589 fps | 98.9% |
| Lovex S062ᴾ | <<locked>> | 100% | 54,099 psi | 87% | 2625 fps | 99.6% |
| Norma 200 | <<locked>> | 86% | 56,275 psi | 90% | 2562 fps | 100% |
| Norma 201 | <<locked>> | 96% | 53,490 psi | 86% | 2602 fps | 99.5% |
| Norma 202 | <<locked>> | 96% | 53,896 psi | 86% | 2615 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 54,389 psi | 87% | 2667 fps | 98.9% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 54,998 psi | 88% | 2690 fps | 98.8% |
| Ramshot TAC | <<locked>> | 94% | 55,332 psi | 89% | 2621 fps | 96.7% |
| Ramshot Wild Boar | <<locked>> | 94% | 53,867 psi | 86% | 2644 fps | 98.7% |
| Ramshot X-Terminator | <<locked>> | 92% | 56,275 psi | 90% | 2618 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,113 psi | 55% | 1578 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 54,607 psi | 88% | 2608 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 55,114 psi | 88% | 2743 fps | 98.6% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 48,399 psi | 78% | 2667 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 94% | 54,766 psi | 88% | 2595 fps | 100% |
| Rottweil R 902 | <<locked>> | 98% | 53,882 psi | 86% | 2598 fps | 99.5% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 47,471 psi | 76% | 2562 fps | 98.4% |
| Shooters World AR Plus | <<locked>> | 84% | 54,795 psi | 88% | 2612 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 96% | 53,505 psi | 86% | 2635 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 54,099 psi | 87% | 2625 fps | 99.6% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 55,100 psi | 88% | 2582 fps | 99.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 54,955 psi | 88% | 2274 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 53,708 psi | 86% | 2608 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 49,632 psi | 80% | 2621 fps | 98.1% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 53,867 psi | 86% | 2562 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 52,968 psi | 85% | 2595 fps | 96.8% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 53,113 psi | 85% | 2621 fps | 98.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 53,084 psi | 85% | 2516 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 52,011 psi | 83% | 2510 fps | 100% |
| Somchem S321 | <<locked>> | 92% | 55,883 psi | 90% | 2654 fps | 99.8% |
| Somchem S335 | <<locked>> | 96% | 54,897 psi | 88% | 2559 fps | 100% |
| Somchem S341 | <<locked>> | 96% | 55,970 psi | 90% | 2644 fps | 98.9% |
| Somchem S355ᴾ | <<locked>> | 100% | 48,573 psi | 78% | 2566 fps | 98.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 34,737 psi | 56% | 2392 fps | 96.1% |
| Vihtavuori N120 | <<locked>> | 84% | 54,737 psi | 88% | 2464 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 52,910 psi | 85% | 2497 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 56,202 psi | 90% | 2552 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 55,506 psi | 89% | 2615 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 54,317 psi | 87% | 2592 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 46,862 psi | 75% | 2510 fps | 99.1% |
| Vihtavuori N530 | <<locked>> | 94% | 55,071 psi | 88% | 2615 fps | 99.6% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 55,883 psi | 90% | 2635 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 42,931 psi | 69% | 2448 fps | 97% |
| Winchester 748 | <<locked>> | 94% | 53,577 psi | 86% | 2657 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 98% | 56,260 psi | 90% | 2680 fps | 99.4% |
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% | 52,663 psi | 84% | 2464 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 36,274 psi | 58% | 2280 fps | 99.9% |
| Accurate 2200 | <<locked>> | 80% | 46,920 psi | 75% | 2510 fps | 96.8% |
| Accurate 2230 | <<locked>> | 80% | 46,992 psi | 75% | 2516 fps | 97.2% |
| Accurate 2460 | <<locked>> | 80% | 39,320 psi | 63% | 2365 fps | 99% |
| Accurate 2495 | <<locked>> | 80% | 28,790 psi | 46% | 2185 fps | 99.2% |
| Accurate 2520 | <<locked>> | 80% | 34,490 psi | 55% | 2310 fps | 97.7% |
| Accurate 4064 | <<locked>> | 80% | 27,267 psi | 44% | 2159 fps | 96.4% |
| Accurate LT-30 | <<locked>> | 80% | 45,063 psi | 72% | 2365 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 45,440 psi | 73% | 2382 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 84% | 37,956 psi | 61% | 2365 fps | 95.4% |
| ADI AR 2207 | <<locked>> | 80% | 48,820 psi | 78% | 2434 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 41,205 psi | 66% | 2408 fps | 95.5% |
| ADI AR 2219 | <<locked>> | 80% | 43,569 psi | 70% | 2457 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 35,302 psi | 57% | 2287 fps | 96% |
| Alliant AR-Comp | <<locked>> | 80% | 33,446 psi | 54% | 2303 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 40,292 psi | 65% | 2457 fps | 96.9% |
| Alliant Power Pro 2000-MR | 43.3 gr | 92% | 44,440 psi | 71% | 2572 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 34,940 psi | 56% | 2333 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 41,568 psi | 67% | 2382 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 40,495 psi | 65% | 2438 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 94% | 37,217 psi | 60% | 2434 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 49,617 psi | 80% | 2444 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 43,569 psi | 70% | 2362 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 41,945 psi | 67% | 2457 fps | 95.2% |
| Bofors RP3 | <<locked>> | 88% | 34,026 psi | 55% | 2326 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 37,449 psi | 60% | 2290 fps | 97.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 32,822 psi | 53% | 2290 fps | 96% |
| Hodgdon CFE223 | 40.5 gr | 84% | 41,524 psi | 67% | 2507 fps | 95.8% |
| Hodgdon H322 | <<locked>> | 80% | 39,856 psi | 64% | 2392 fps | 99.7% |
| Hodgdon H335 | <<locked>> | 80% | 40,480 psi | 65% | 2408 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 96% | 46,557 psi | 75% | 2530 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 80% | 49,574 psi | 79% | 2451 fps | 100% |
| Hodgdon H4895 | <<locked>> | 82% | 35,795 psi | 57% | 2326 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 33,939 psi | 54% | 2333 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,063 psi | 40% | 1375 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 36,724 psi | 59% | 2329 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 32,039 psi | 51% | 2290 fps | 99.1% |
| IMR 4064 | <<locked>> | 90% | 40,567 psi | 65% | 2392 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 42,467 psi | 68% | 2352 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 36,361 psi | 58% | 2369 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 35,302 psi | 57% | 2287 fps | 96% |
| Lovex D073.4 | <<locked>> | 80% | 47,659 psi | 76% | 2510 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 39,015 psi | 63% | 2365 fps | 98% |
| Lovex D073.6 | <<locked>> | 80% | 31,169 psi | 50% | 2247 fps | 96.6% |
| Lovex S060 | <<locked>> | 82% | 36,869 psi | 59% | 2274 fps | 95% |
| Lovex S062 | <<locked>> | 84% | 33,112 psi | 53% | 2257 fps | 95.4% |
| Norma 200 | <<locked>> | 80% | 46,775 psi | 75% | 2441 fps | 100% |
| Norma 201 | <<locked>> | 80% | 32,721 psi | 52% | 2231 fps | 95.2% |
| Norma 202 | <<locked>> | 80% | 32,518 psi | 52% | 2251 fps | 97.8% |
| Norma 203B | <<locked>> | 88% | 37,260 psi | 60% | 2379 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 90% | 39,610 psi | 64% | 2438 fps | 95.5% |
| Ramshot TAC | <<locked>> | 90% | 48,631 psi | 78% | 2523 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 84% | 38,740 psi | 62% | 2392 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 38,464 psi | 62% | 2329 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,382 psi | 41% | 1411 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 39,682 psi | 64% | 2372 fps | 98.5% |
| ReloadSwiss RS 52 | 40.2 gr | 88% | 39,349 psi | 63% | 2474 fps | 95.1% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 30,835 psi | 49% | 2287 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 36,230 psi | 58% | 2290 fps | 98.4% |
| Rottweil R 902 | <<locked>> | 82% | 33,199 psi | 53% | 2234 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 90% | 34,171 psi | 55% | 2323 fps | 95.1% |
| Shooters World AR Plus | <<locked>> | 80% | 47,659 psi | 76% | 2510 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 31,169 psi | 50% | 2247 fps | 96.6% |
| Shooters World Precision | <<locked>> | 84% | 33,112 psi | 53% | 2257 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 41,959 psi | 67% | 2382 fps | 97.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 49,385 psi | 79% | 2208 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 44,164 psi | 71% | 2464 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 38,406 psi | 62% | 2421 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 42,221 psi | 68% | 2395 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 46,166 psi | 74% | 2493 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 38,812 psi | 62% | 2382 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,722 psi | 56% | 2218 fps | 98.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,166 psi | 45% | 2093 fps | 97.3% |
| Somchem S321 | <<locked>> | 80% | 37,463 psi | 60% | 2356 fps | 97.1% |
| Somchem S335 | <<locked>> | 80% | 33,968 psi | 54% | 2221 fps | 98.7% |
| Somchem S341 | <<locked>> | 84% | 37,376 psi | 60% | 2346 fps | 95% |
| Somchem S355 | <<locked>> | 90% | 35,389 psi | 57% | 2329 fps | 95.2% |
| Somchem S365 | <<locked>> | 98% | 32,619 psi | 52% | 2339 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 48,776 psi | 78% | 2388 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 39,479 psi | 63% | 2300 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 34,635 psi | 56% | 2228 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 80% | 29,660 psi | 48% | 2195 fps | 99.2% |
| Vihtavuori N140 | <<locked>> | 80% | 30,705 psi | 49% | 2192 fps | 97.5% |
| Vihtavuori N150 | <<locked>> | 88% | 31,763 psi | 51% | 2231 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 35,085 psi | 56% | 2280 fps | 96.1% |
| Vihtavuori N540 | <<locked>> | 80% | 29,573 psi | 47% | 2178 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 37,666 psi | 60% | 2346 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 33,591 psi | 54% | 2310 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 84% | 35,404 psi | 57% | 2333 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 112 powders for .300 CR loaded with the .308 | 170gr | Swift A-Frame. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,743 fps; across all powders the maximum-charge window runs from 1,542 fps to 2,743 fps. Accurate 2495 gives the best case fill at 100 %, and 112 of the 112 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 170.0 gr projectile in 0.308" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, Accurate 4350 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 2000-MR, ReloadSwiss RS 52, Hodgdon CFE223 rank at the top here: for .300 CR with the .308 | 170gr | Swift A-Frame they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Accurate 4350, Alliant Reloder-16 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.