Load Specifications
Bullet Manufacturer:Berger
Bullet Weight:185 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.300 RCM load data
Case Length (l3):2.09"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:75 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:11.5
Load data in caliber .300 RCM with .308 | 185gr | Berger VLD Target bullet and 100 powders. The key underlying parameters are shown in the table above.
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 2015 | <<locked>> | 84% | 56,260 psi | 88% | 2595 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 55,274 psi | 87% | 2625 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 56,840 psi | 89% | 2687 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 57,696 psi | 90% | 2680 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 42,148 psi | 66% | 2539 fps | 96.9% |
| Accurate 4064 | <<locked>> | 90% | 55,129 psi | 86% | 2671 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 54,940 psi | 86% | 2759 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 86% | 55,376 psi | 87% | 2700 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 56,304 psi | 88% | 2700 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 84% | 54,549 psi | 85% | 2654 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 55,550 psi | 87% | 2625 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 54,984 psi | 86% | 2818 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 49,661 psi | 78% | 2680 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 56,434 psi | 88% | 2720 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 57,232 psi | 90% | 2746 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 56,159 psi | 88% | 2812 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 96% | 57,566 psi | 90% | 2848 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,161 psi | 63% | 2566 fps | 99.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,802 psi | 70% | 2723 fps | 98.9% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 55,129 psi | 86% | 2717 fps | 99.9% |
| Bofors RP3 | <<locked>> | 92% | 57,276 psi | 90% | 2740 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 57,101 psi | 89% | 2713 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 84% | 56,014 psi | 88% | 2631 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 57,522 psi | 90% | 2733 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 55,796 psi | 87% | 2779 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 54,592 psi | 86% | 2707 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 96% | 54,085 psi | 85% | 2756 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 94% | 54,897 psi | 86% | 2720 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 86% | 55,956 psi | 88% | 2710 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 52,417 psi | 82% | 2690 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 55,564 psi | 87% | 2746 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 54,549 psi | 85% | 2792 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,665 psi | 56% | 1627 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 57,130 psi | 90% | 2710 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 56,043 psi | 88% | 2687 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 55,912 psi | 88% | 2684 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 55,854 psi | 88% | 2671 fps | 98.5% |
| IMR 4350ᴾ | <<locked>> | 100% | 57,566 psi | 90% | 2743 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 94% | 55,521 psi | 87% | 2694 fps | 98.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 55,405 psi | 87% | 2749 fps | 99.9% |
| IMR 4895 | <<locked>> | 88% | 55,056 psi | 86% | 2726 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 54,549 psi | 85% | 2654 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 55,143 psi | 86% | 2677 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 55,042 psi | 86% | 2631 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 55,695 psi | 87% | 2677 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 54,897 psi | 86% | 2687 fps | 99.2% |
| Lovex S070 | <<locked>> | 98% | 55,970 psi | 88% | 2723 fps | 98.7% |
| Norma 201 | <<locked>> | 88% | 57,711 psi | 90% | 2697 fps | 100% |
| Norma 202 | <<locked>> | 86% | 54,723 psi | 86% | 2648 fps | 100% |
| Norma 203B | <<locked>> | 90% | 56,463 psi | 88% | 2733 fps | 100% |
| Norma 204 | <<locked>> | 98% | 54,607 psi | 86% | 2740 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 44,831 psi | 70% | 2680 fps | 96.4% |
| Norma URPᴾ | <<locked>> | 100% | 57,348 psi | 90% | 2792 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 90% | 57,058 psi | 89% | 2759 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 56,347 psi | 88% | 2795 fps | 99.3% |
| Ramshot TAC | <<locked>> | 84% | 54,621 psi | 86% | 2674 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 84% | 54,273 psi | 85% | 2690 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 55,129 psi | 86% | 2654 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,216 psi | 57% | 1667 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 57,232 psi | 90% | 2677 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 54,940 psi | 86% | 2690 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 54,201 psi | 85% | 2759 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 57,363 psi | 90% | 2844 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 54,447 psi | 85% | 2779 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 53,983 psi | 85% | 2805 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 84% | 55,216 psi | 87% | 2628 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,882 psi | 86% | 2651 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 57,145 psi | 90% | 2733 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 57,101 psi | 89% | 2713 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 96% | 54,897 psi | 86% | 2687 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 86% | 55,143 psi | 86% | 2677 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,695 psi | 87% | 2677 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 55,970 psi | 88% | 2723 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 55,332 psi | 87% | 2743 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 56,884 psi | 89% | 2707 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 57,479 psi | 90% | 2726 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,666 psi | 87% | 2585 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 55,883 psi | 88% | 2585 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 55,419 psi | 87% | 2648 fps | 98.4% |
| Somchem S321 | <<locked>> | 82% | 55,506 psi | 87% | 2684 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 54,955 psi | 86% | 2585 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 56,217 psi | 88% | 2694 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 57,348 psi | 90% | 2726 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 52,011 psi | 82% | 2749 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 48,225 psi | 76% | 2638 fps | 96.7% |
| Vihtavuori N130 | <<locked>> | 82% | 55,376 psi | 87% | 2549 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,941 psi | 88% | 2569 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 54,534 psi | 85% | 2612 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 55,158 psi | 86% | 2625 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 55,317 psi | 87% | 2661 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 56,478 psi | 89% | 2740 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 84% | 54,868 psi | 86% | 2651 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 56,884 psi | 89% | 2671 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 55,303 psi | 87% | 2746 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,121 psi | 69% | 2638 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 56,550 psi | 89% | 2720 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 54,723 psi | 86% | 2697 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 54,404 psi | 85% | 2759 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,013 psi | 56% | 2579 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 88% | 57,450 psi | 90% | 2733 fps | 100% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 49,864 psi | 78% | 2513 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 42,598 psi | 67% | 2448 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 49,850 psi | 78% | 2592 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 44,628 psi | 70% | 2477 fps | 95.4% |
| Accurate 3100 | <<locked>> | 96% | 36,593 psi | 57% | 2431 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 40,277 psi | 63% | 2448 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 31,720 psi | 50% | 2336 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 45,861 psi | 72% | 2552 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 39,175 psi | 61% | 2415 fps | 98.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,964 psi | 75% | 2556 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 48,631 psi | 76% | 2536 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,959 psi | 66% | 2595 fps | 98.8% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 46,514 psi | 73% | 2628 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,899 psi | 61% | 2438 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,582 psi | 65% | 2493 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 82% | 32,242 psi | 51% | 2349 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 33,504 psi | 53% | 2411 fps | 97.9% |
| Alliant Reloder-23 | <<locked>> | 88% | 27,905 psi | 44% | 2264 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 92% | 33,939 psi | 53% | 2480 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,266 psi | 71% | 2562 fps | 99% |
| Bofors RP3 | <<locked>> | 80% | 38,479 psi | 60% | 2441 fps | 99.3% |
| Bofors RP7 | <<locked>> | 86% | 41,974 psi | 66% | 2464 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,617 psi | 78% | 2543 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,094 psi | 74% | 2585 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 51,924 psi | 81% | 2723 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 80% | 39,204 psi | 61% | 2444 fps | 97.3% |
| Hodgdon H414 | <<locked>> | 88% | 41,510 psi | 65% | 2543 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 88% | 45,208 psi | 71% | 2562 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 46,340 psi | 73% | 2562 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,659 psi | 43% | 2205 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,409 psi | 66% | 2543 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 90% | 44,034 psi | 69% | 2612 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,629 psi | 42% | 1453 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,541 psi | 70% | 2520 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 46,398 psi | 73% | 2556 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,162 psi | 65% | 2448 fps | 98.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,540 psi | 68% | 2467 fps | 96.1% |
| IMR 4350 | <<locked>> | 90% | 42,163 psi | 66% | 2493 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 84% | 41,046 psi | 64% | 2448 fps | 95.2% |
| IMR 4831 | <<locked>> | 82% | 30,879 psi | 48% | 2297 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 42,612 psi | 67% | 2523 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 80% | 47,964 psi | 75% | 2556 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 45,426 psi | 71% | 2536 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,948 psi | 72% | 2493 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 41,133 psi | 64% | 2451 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 35,984 psi | 56% | 2352 fps | 95.3% |
| Lovex S070 | <<locked>> | 88% | 40,959 psi | 64% | 2474 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 45,005 psi | 71% | 2507 fps | 100% |
| Norma 202 | <<locked>> | 80% | 45,455 psi | 71% | 2513 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,959 psi | 64% | 2484 fps | 99.1% |
| Norma 204 | <<locked>> | 94% | 47,747 psi | 75% | 2628 fps | 95.1% |
| Norma MRP | <<locked>> | 98% | 41,989 psi | 66% | 2625 fps | 95.5% |
| Norma URP | <<locked>> | 82% | 32,169 psi | 50% | 2339 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 40,698 psi | 64% | 2500 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 38,159 psi | 60% | 2480 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 47,950 psi | 75% | 2572 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,485 psi | 74% | 2589 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,808 psi | 81% | 2608 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,992 psi | 42% | 1490 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 53,635 psi | 84% | 2628 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,668 psi | 62% | 2428 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,150 psi | 69% | 2598 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,636 psi | 56% | 2474 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 33,678 psi | 53% | 2405 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 36,071 psi | 57% | 2464 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 49,066 psi | 77% | 2539 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,989 psi | 67% | 2464 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 36,260 psi | 57% | 2388 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 86% | 41,974 psi | 66% | 2464 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 82% | 35,984 psi | 56% | 2352 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,426 psi | 71% | 2536 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,133 psi | 64% | 2451 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 40,959 psi | 64% | 2474 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,275 psi | 58% | 2438 fps | 98.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,224 psi | 72% | 2546 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,556 psi | 70% | 2530 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,311 psi | 73% | 2457 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,638 psi | 61% | 2333 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 39,914 psi | 63% | 2395 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 52,069 psi | 82% | 2635 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,905 psi | 72% | 2457 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,108 psi | 72% | 2543 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 37,043 psi | 58% | 2392 fps | 98.7% |
| Somchem S365 | <<locked>> | 80% | 27,035 psi | 42% | 2244 fps | 96.8% |
| Somchem S385 | <<locked>> | 96% | 42,177 psi | 66% | 2530 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 52,214 psi | 82% | 2507 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,673 psi | 73% | 2448 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,496 psi | 67% | 2441 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,946 psi | 67% | 2451 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,201 psi | 55% | 2333 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 31,343 psi | 49% | 2287 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 48,066 psi | 75% | 2552 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 41,278 psi | 65% | 2441 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 32,938 psi | 52% | 2339 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 88% | 29,878 psi | 47% | 2333 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,227 psi | 49% | 2267 fps | 97.2% |
| Winchester 748 | <<locked>> | 80% | 47,993 psi | 75% | 2598 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 41,713 psi | 65% | 2546 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 92% | 27,905 psi | 44% | 2336 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,063 psi | 69% | 2533 fps | 99.7% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 100 powders for .300 RCM loaded with the .308 | 185gr | Berger VLD Target. Alliant Reloder-17 delivers the highest muzzle velocity at 2,848 fps; across all powders the maximum-charge window runs from 1,627 fps to 2,848 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 185.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Power Pro Varmint, Alliant Reloder-16 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.