Load Specifications
Load data in caliber .300 CR with .308 | 165gr | Speer Grand Slam bullet and 88 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 Winchester 748.
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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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% | 54,302 psi | 87% | 2510 fps | 100% |
| Accurate 2015 | <<locked>> | 94% | 53,185 psi | 85% | 2572 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 54,592 psi | 88% | 2654 fps | 97.7% |
| Accurate 2230 | <<locked>> | 86% | 55,172 psi | 88% | 2664 fps | 98.1% |
| Accurate 2460 | <<locked>> | 92% | 55,463 psi | 89% | 2638 fps | 100% |
| Accurate 2495ᴾ | <<locked>> | 100% | 52,518 psi | 84% | 2621 fps | 100% |
| Accurate 2520 | <<locked>> | 96% | 56,362 psi | 90% | 2690 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 48,660 psi | 78% | 2605 fps | 100% |
| Accurate LT-30 | <<locked>> | 88% | 55,071 psi | 88% | 2533 fps | 100% |
| Accurate LT-32 | <<locked>> | 88% | 55,492 psi | 89% | 2549 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 98% | 55,521 psi | 89% | 2684 fps | 98.6% |
| ADI AR 2207 | <<locked>> | 86% | 55,840 psi | 90% | 2556 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 49,951 psi | 80% | 2579 fps | 97% |
| ADI AR 2219 | <<locked>> | 88% | 54,244 psi | 87% | 2638 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 96% | 55,492 psi | 89% | 2651 fps | 99.3% |
| Alliant AR-Comp | <<locked>> | 96% | 53,490 psi | 86% | 2641 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 56,333 psi | 90% | 2749 fps | 99.2% |
| Alliant Power Pro 2000-MRᴾ | <<locked>> | 100% | 55,405 psi | 89% | 2776 fps | 97.7% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 48,240 psi | 77% | 2598 fps | 98.3% |
| Alliant Reloder-10x | <<locked>> | 90% | 53,795 psi | 86% | 2589 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 52,678 psi | 84% | 2664 fps | 97.7% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 42,931 psi | 69% | 2572 fps | 96.3% |
| Alliant Reloder-7 | <<locked>> | 84% | 53,896 psi | 86% | 2533 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 53,751 psi | 86% | 2533 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 98% | 55,201 psi | 89% | 2694 fps | 97.5% |
| Bofors RP3ᴾ | <<locked>> | 100% | 48,124 psi | 77% | 2608 fps | 98.4% |
| Hodgdon Benchmark | <<locked>> | 94% | 54,853 psi | 88% | 2598 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 96% | 53,490 psi | 86% | 2680 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 94% | 55,579 psi | 89% | 2762 fps | 98.2% |
| Hodgdon H322 | <<locked>> | 92% | 56,304 psi | 90% | 2667 fps | 100% |
| Hodgdon H335 | <<locked>> | 90% | 53,795 psi | 86% | 2641 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 50,111 psi | 80% | 2608 fps | 95.8% |
| Hodgdon H4198 | <<locked>> | 84% | 53,650 psi | 86% | 2533 fps | 100% |
| Hodgdon H4895 | <<locked>> | 98% | 55,912 psi | 90% | 2697 fps | 99% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 54,041 psi | 87% | 2720 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,765 psi | 54% | 1555 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 54,447 psi | 87% | 2654 fps | 98.8% |
| IMR 3031 | <<locked>> | 98% | 54,215 psi | 87% | 2690 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 52,547 psi | 84% | 2608 fps | 97.7% |
| IMR 4198 | <<locked>> | 90% | 54,810 psi | 88% | 2556 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 53,911 psi | 86% | 2697 fps | 98.5% |
| IMR 8208 XBR | <<locked>> | 96% | 55,492 psi | 89% | 2651 fps | 99.3% |
| Lovex D073.4 | <<locked>> | 86% | 55,912 psi | 90% | 2654 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 92% | 55,434 psi | 89% | 2644 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 98% | 53,795 psi | 86% | 2667 fps | 99.9% |
| Lovex S053 | <<locked>> | 82% | 55,796 psi | 89% | 2461 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 53,330 psi | 86% | 2575 fps | 98.2% |
| Lovex S062ᴾ | <<locked>> | 100% | 51,445 psi | 82% | 2612 fps | 99% |
| Norma 200 | <<locked>> | 86% | 53,679 psi | 86% | 2562 fps | 100% |
| Norma 201 | <<locked>> | 98% | 54,230 psi | 87% | 2638 fps | 99.3% |
| Norma 202 | <<locked>> | 98% | 54,288 psi | 87% | 2648 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 51,663 psi | 83% | 2651 fps | 98.1% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 52,199 psi | 84% | 2674 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 96% | 54,795 psi | 88% | 2680 fps | 98.4% |
| Ramshot X-Terminator | <<locked>> | 92% | 53,853 psi | 86% | 2608 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,634 psi | 54% | 1588 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 55,419 psi | 89% | 2648 fps | 99.9% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 55,535 psi | 89% | 2772 fps | 98.2% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 45,934 psi | 74% | 2644 fps | 99.2% |
| Rottweil R 901 | <<locked>> | 96% | 55,419 psi | 89% | 2631 fps | 100% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 54,302 psi | 87% | 2628 fps | 99.3% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 44,454 psi | 71% | 2539 fps | 97.4% |
| Shooters World AR Plus | <<locked>> | 86% | 55,912 psi | 90% | 2654 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 98% | 53,795 psi | 86% | 2667 fps | 99.9% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 51,445 psi | 82% | 2612 fps | 99% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 56,159 psi | 90% | 2621 fps | 99.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 56,086 psi | 90% | 2313 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 54,810 psi | 88% | 2651 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 47,021 psi | 75% | 2602 fps | 97% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 54,940 psi | 88% | 2605 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 96% | 53,954 psi | 87% | 2631 fps | 96.4% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 54,012 psi | 87% | 2657 fps | 98.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 53,998 psi | 87% | 2556 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 49,443 psi | 79% | 2503 fps | 100% |
| Somchem S321 | <<locked>> | 92% | 53,272 psi | 85% | 2644 fps | 99.3% |
| Somchem S335 | <<locked>> | 98% | 55,782 psi | 89% | 2595 fps | 100% |
| Somchem S341 | <<locked>> | 96% | 53,011 psi | 85% | 2628 fps | 98.1% |
| Somchem S355ᴾ | <<locked>> | 100% | 46,021 psi | 74% | 2552 fps | 97.5% |
| Vihtavuori N120 | <<locked>> | 86% | 55,796 psi | 89% | 2507 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 54,041 psi | 87% | 2539 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 53,490 psi | 86% | 2549 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 52,417 psi | 84% | 2608 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 54,781 psi | 88% | 2628 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 44,121 psi | 71% | 2493 fps | 98.3% |
| Vihtavuori N530 | <<locked>> | 96% | 56,086 psi | 90% | 2651 fps | 99.4% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 52,910 psi | 85% | 2625 fps | 100% |
| Winchester 748 | <<locked>> | 96% | 54,346 psi | 87% | 2694 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 98% | 53,258 psi | 85% | 2664 fps | 98.7% |
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% | 50,879 psi | 82% | 2467 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 34,708 psi | 56% | 2277 fps | 99.6% |
| Accurate 2200 | <<locked>> | 80% | 44,991 psi | 72% | 2500 fps | 95.7% |
| Accurate 2230 | <<locked>> | 80% | 44,672 psi | 72% | 2503 fps | 96.1% |
| Accurate 2460 | <<locked>> | 80% | 37,217 psi | 60% | 2352 fps | 98.3% |
| Accurate 2495 | <<locked>> | 80% | 27,035 psi | 43% | 2169 fps | 98.4% |
| Accurate 2520 | <<locked>> | 80% | 32,532 psi | 52% | 2290 fps | 96.6% |
| Accurate 4064 | <<locked>> | 80% | 25,657 psi | 41% | 2142 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 43,366 psi | 70% | 2365 fps | 99.8% |
| Accurate LT-32 | <<locked>> | 80% | 43,729 psi | 70% | 2375 fps | 99% |
| ADI AR 2206H | <<locked>> | 88% | 40,785 psi | 65% | 2444 fps | 95.7% |
| ADI AR 2207 | <<locked>> | 80% | 46,615 psi | 75% | 2434 fps | 100% |
| ADI AR 2208 | <<locked>> | 96% | 44,193 psi | 71% | 2484 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 41,640 psi | 67% | 2451 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 35,766 psi | 57% | 2320 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 31,691 psi | 51% | 2293 fps | 100% |
| Alliant Power Pro 1200-R | 34.6 gr | 80% | 38,305 psi | 61% | 2444 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 45,194 psi | 72% | 2602 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 35,114 psi | 56% | 2359 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 39,595 psi | 63% | 2375 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 40,799 psi | 65% | 2467 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 98% | 40,306 psi | 65% | 2516 fps | 95.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 47,630 psi | 76% | 2448 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 41,785 psi | 67% | 2359 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 45,556 psi | 73% | 2546 fps | 95.5% |
| Bofors RP3 | <<locked>> | 92% | 36,753 psi | 59% | 2408 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 35,955 psi | 58% | 2280 fps | 96.3% |
| Hodgdon BL-C2 | <<locked>> | 82% | 33,141 psi | 53% | 2323 fps | 95.5% |
| Hodgdon CFE223 | 40.5 gr | 86% | 42,250 psi | 68% | 2539 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 37,985 psi | 61% | 2385 fps | 99.3% |
| Hodgdon H335 | <<locked>> | 80% | 38,435 psi | 62% | 2398 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 98% | 46,876 psi | 75% | 2559 fps | 95% |
| Hodgdon H4198 | <<locked>> | 80% | 47,718 psi | 77% | 2448 fps | 99.9% |
| Hodgdon H4895 | <<locked>> | 86% | 38,421 psi | 62% | 2405 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 36,695 psi | 59% | 2415 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,758 psi | 40% | 1381 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 37,333 psi | 60% | 2365 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 30,385 psi | 49% | 2274 fps | 98.4% |
| IMR 4064 | <<locked>> | 92% | 41,292 psi | 66% | 2428 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 40,843 psi | 65% | 2356 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 39,363 psi | 63% | 2454 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 82% | 35,766 psi | 57% | 2320 fps | 95.5% |
| Lovex D073.4 | <<locked>> | 80% | 45,252 psi | 73% | 2500 fps | 99.1% |
| Lovex D073.5 | <<locked>> | 80% | 37,014 psi | 59% | 2349 fps | 97.1% |
| Lovex D073.6 | <<locked>> | 80% | 29,298 psi | 47% | 2228 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 52,634 psi | 84% | 2421 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 39,668 psi | 64% | 2349 fps | 95.3% |
| Lovex S062 | <<locked>> | 88% | 35,766 psi | 57% | 2339 fps | 95.8% |
| Norma 200 | <<locked>> | 80% | 44,715 psi | 72% | 2438 fps | 100% |
| Norma 201 | <<locked>> | 84% | 35,317 psi | 57% | 2313 fps | 95.5% |
| Norma 202 | <<locked>> | 80% | 30,893 psi | 50% | 2238 fps | 96.7% |
| Norma 203B | <<locked>> | 92% | 40,001 psi | 64% | 2457 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 92% | 40,118 psi | 64% | 2467 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 86% | 39,349 psi | 63% | 2428 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 84% | 41,626 psi | 67% | 2411 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,048 psi | 40% | 1421 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 37,710 psi | 60% | 2359 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 42,409 psi | 68% | 2559 fps | 95.4% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 33,373 psi | 54% | 2372 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 34,519 psi | 55% | 2277 fps | 97.5% |
| Rottweil R 902 | <<locked>> | 86% | 35,578 psi | 57% | 2310 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 94% | 36,680 psi | 59% | 2398 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 45,252 psi | 73% | 2500 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 29,298 psi | 47% | 2228 fps | 95.3% |
| Shooters World Precision | <<locked>> | 88% | 35,766 psi | 57% | 2339 fps | 95.8% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 39,987 psi | 64% | 2369 fps | 96.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 48,138 psi | 77% | 2221 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 42,032 psi | 67% | 2454 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 41,394 psi | 66% | 2500 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 40,219 psi | 64% | 2385 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 50,415 psi | 81% | 2579 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 39,117 psi | 63% | 2411 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,141 psi | 53% | 2208 fps | 97.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 26,847 psi | 43% | 2080 fps | 96.2% |
| Somchem S321 | <<locked>> | 80% | 35,592 psi | 57% | 2339 fps | 95.9% |
| Somchem S335 | <<locked>> | 80% | 32,430 psi | 52% | 2211 fps | 98% |
| Somchem S341 | <<locked>> | 88% | 40,524 psi | 65% | 2428 fps | 95.3% |
| Somchem S355 | <<locked>> | 94% | 38,029 psi | 61% | 2408 fps | 95.4% |
| Vihtavuori N120 | <<locked>> | 80% | 46,659 psi | 75% | 2392 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 37,739 psi | 61% | 2297 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 32,996 psi | 53% | 2218 fps | 99.3% |
| Vihtavuori N135 | <<locked>> | 80% | 27,978 psi | 45% | 2178 fps | 98.5% |
| Vihtavuori N140 | <<locked>> | 80% | 29,240 psi | 47% | 2178 fps | 96.5% |
| Vihtavuori N150 | <<locked>> | 90% | 32,184 psi | 52% | 2264 fps | 95% |
| Vihtavuori N530 | <<locked>> | 82% | 35,578 psi | 57% | 2313 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 27,992 psi | 45% | 2162 fps | 95.3% |
| Winchester 748 | 36.2 gr | 80% | 32,068 psi | 51% | 2293 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 88% | 38,363 psi | 62% | 2415 fps | 95.6% |
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 88 powders for .300 CR loaded with the .308 | 165gr | Speer Grand Slam. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,776 fps; across all powders the maximum-charge window runs from 1,555 fps to 2,776 fps. Accurate 2495 gives the best case fill at 100 %, and 88 of the 88 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 165.0 gr projectile in 0.308" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, ADI AR 2208 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, Winchester 748 rank at the top here: for .300 CR with the .308 | 165gr | Speer Grand Slam 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.