Load Specifications
Bullet Manufacturer:Winchester
Bullet Weight:180 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:1:6.0
Load data in caliber .300 RCM with .308 | 180gr | Winchester Silvertip bullet and 104 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Alliant Reloder-17.
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>> | 82% | 56,681 psi | 89% | 2667 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,912 psi | 88% | 2697 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 57,348 psi | 90% | 2762 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 54,302 psi | 85% | 2707 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,630 psi | 73% | 2680 fps | 98.2% |
| Accurate 4064 | <<locked>> | 88% | 56,217 psi | 88% | 2749 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,289 psi | 88% | 2844 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 55,666 psi | 87% | 2776 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,855 psi | 89% | 2782 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,940 psi | 85% | 2825 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,418 psi | 85% | 2723 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,898 psi | 88% | 2694 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,695 psi | 87% | 2900 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 57,145 psi | 90% | 2799 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,696 psi | 90% | 2825 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,898 psi | 89% | 2894 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,621 psi | 86% | 2874 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,084 psi | 83% | 2815 fps | 97.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,005 psi | 69% | 2703 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,566 psi | 60% | 2605 fps | 96.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,792 psi | 78% | 2881 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,506 psi | 87% | 2795 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 54,462 psi | 85% | 2769 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 57,595 psi | 90% | 2795 fps | 98.6% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,912 psi | 88% | 2703 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,259 psi | 85% | 2756 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,056 psi | 86% | 2782 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 94% | 55,129 psi | 86% | 2841 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 92% | 55,448 psi | 87% | 2805 fps | 97.8% |
| Hodgdon H4895 | <<locked>> | 84% | 56,246 psi | 88% | 2785 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,232 psi | 90% | 2822 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,289 psi | 88% | 2822 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,477 psi | 87% | 2881 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,998 psi | 56% | 1696 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,406 psi | 90% | 2785 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,724 psi | 89% | 2762 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,188 psi | 88% | 2759 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,738 psi | 87% | 2743 fps | 98.7% |
| IMR 4350 | <<locked>> | 96% | 54,766 psi | 86% | 2776 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,825 psi | 87% | 2772 fps | 98.7% |
| IMR 4831 | <<locked>> | 98% | 56,666 psi | 89% | 2835 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 55,564 psi | 87% | 2802 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 54,418 psi | 85% | 2723 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,999 psi | 88% | 2753 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,027 psi | 86% | 2707 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,188 psi | 88% | 2756 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,593 psi | 87% | 2769 fps | 99.5% |
| Lovex S070 | <<locked>> | 96% | 56,623 psi | 89% | 2805 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,711 psi | 61% | 2533 fps | 96.3% |
| Norma 201 | <<locked>> | 84% | 54,346 psi | 85% | 2720 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,984 psi | 86% | 2720 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,898 psi | 89% | 2812 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,288 psi | 87% | 2822 fps | 97.3% |
| Norma MRPᴾ | <<locked>> | 100% | 49,356 psi | 77% | 2835 fps | 97.9% |
| Norma URP | <<locked>> | 96% | 54,969 psi | 86% | 2828 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 53,940 psi | 85% | 2785 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,363 psi | 90% | 2881 fps | 99.5% |
| Ramshot TAC | <<locked>> | 82% | 54,491 psi | 85% | 2746 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,404 psi | 85% | 2762 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,535 psi | 57% | 1736 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,085 psi | 86% | 2766 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,882 psi | 86% | 2838 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,433 psi | 85% | 2874 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,825 psi | 87% | 2864 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,882 psi | 86% | 2894 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 55,405 psi | 87% | 2700 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,998 psi | 86% | 2720 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 54,273 psi | 85% | 2759 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 55,912 psi | 88% | 2799 fps | 96.3% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,011 psi | 82% | 2799 fps | 97.1% |
| Rottweil R 907 | <<locked>> | 94% | 57,595 psi | 90% | 2795 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,593 psi | 87% | 2769 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,999 psi | 88% | 2753 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,188 psi | 88% | 2756 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,623 psi | 89% | 2805 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,854 psi | 88% | 2818 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,927 psi | 89% | 2779 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,711 psi | 90% | 2799 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,651 psi | 87% | 2657 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,072 psi | 88% | 2657 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,782 psi | 87% | 2726 fps | 98.7% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,517 psi | 81% | 2792 fps | 96.9% |
| Somchem S335 | <<locked>> | 84% | 55,042 psi | 86% | 2654 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,565 psi | 89% | 2769 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,549 psi | 85% | 2759 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 57,740 psi | 90% | 2792 fps | 95.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 57,232 psi | 90% | 2881 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,823 psi | 83% | 2779 fps | 97.9% |
| Vihtavuori N133 | <<locked>> | 84% | 56,043 psi | 88% | 2641 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,085 psi | 86% | 2684 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,622 psi | 87% | 2700 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,898 psi | 88% | 2736 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,450 psi | 90% | 2825 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,469 psi | 71% | 2641 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 82% | 54,926 psi | 86% | 2723 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,276 psi | 90% | 2743 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,347 psi | 88% | 2828 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,863 psi | 77% | 2776 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,450 psi | 90% | 2799 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,303 psi | 87% | 2772 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,390 psi | 87% | 2844 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,552 psi | 62% | 2736 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 53,983 psi | 85% | 2756 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,342 psi | 77% | 2710 fps | 96.1% |
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 2015 | <<locked>> | 80% | 53,098 psi | 83% | 2621 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,021 psi | 72% | 2559 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,461 psi | 84% | 2710 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,672 psi | 70% | 2546 fps | 95.9% |
| Accurate 3100 | <<locked>> | 92% | 35,360 psi | 55% | 2461 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 43,540 psi | 68% | 2562 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,561 psi | 51% | 2408 fps | 96% |
| ADI AR 2206H | <<locked>> | 80% | 49,255 psi | 77% | 2677 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 41,887 psi | 66% | 2533 fps | 99% |
| ADI AR 2209 | <<locked>> | 96% | 47,529 psi | 74% | 2713 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,358 psi | 80% | 2677 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,489 psi | 82% | 2651 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,237 psi | 71% | 2726 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,800 psi | 66% | 2556 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,875 psi | 70% | 2621 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,445 psi | 51% | 2418 fps | 96.1% |
| Alliant Reloder-17 | 53.8 gr | 80% | 36,376 psi | 57% | 2543 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 96% | 46,673 psi | 73% | 2703 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,413 psi | 45% | 2336 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,230 psi | 57% | 2549 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 88% | 32,474 psi | 51% | 2500 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,733 psi | 76% | 2687 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 41,771 psi | 65% | 2562 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 42,221 psi | 66% | 2536 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,779 psi | 83% | 2661 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,633 psi | 79% | 2703 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,453 psi | 67% | 2569 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 84% | 39,537 psi | 62% | 2562 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 86% | 45,818 psi | 72% | 2641 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 49,806 psi | 78% | 2687 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,965 psi | 47% | 2323 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,861 psi | 72% | 2664 fps | 100% |
| Hodgdon Superformance | 61.1 gr | 86% | 41,669 psi | 65% | 2635 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,890 psi | 42% | 1516 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,572 psi | 75% | 2638 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 49,792 psi | 78% | 2667 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,034 psi | 69% | 2566 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,369 psi | 73% | 2589 fps | 97.2% |
| IMR 4350 | <<locked>> | 88% | 42,685 psi | 67% | 2569 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,162 psi | 65% | 2516 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 31,488 psi | 49% | 2365 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 46,021 psi | 72% | 2651 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 51,358 psi | 80% | 2677 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,863 psi | 77% | 2651 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,776 psi | 76% | 2612 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 44,092 psi | 69% | 2566 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,158 psi | 57% | 2415 fps | 95.7% |
| Lovex S070 | <<locked>> | 84% | 38,986 psi | 61% | 2497 fps | 95.4% |
| Lovex S071 | <<locked>> | 98% | 36,332 psi | 57% | 2480 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 48,037 psi | 75% | 2625 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,559 psi | 76% | 2628 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,266 psi | 69% | 2608 fps | 99.6% |
| Norma 204 | <<locked>> | 92% | 48,414 psi | 76% | 2713 fps | 95.8% |
| Norma MRP | <<locked>> | 94% | 40,089 psi | 63% | 2651 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 32,706 psi | 51% | 2408 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 43,990 psi | 69% | 2625 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 36,289 psi | 57% | 2500 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 51,242 psi | 80% | 2697 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,097 psi | 80% | 2713 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,253 psi | 43% | 1549 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,569 psi | 67% | 2552 fps | 96.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,718 psi | 75% | 2726 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,711 psi | 61% | 2602 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,140 psi | 50% | 2421 fps | 95.4% |
| ReloadSwiss RS 70 | 56 gr | 82% | 34,200 psi | 54% | 2480 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 52,272 psi | 82% | 2654 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,818 psi | 72% | 2579 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,334 psi | 62% | 2510 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 98% | 52,388 psi | 82% | 2743 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 96% | 45,426 psi | 71% | 2684 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 84% | 42,221 psi | 66% | 2536 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,158 psi | 57% | 2415 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,863 psi | 77% | 2651 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,092 psi | 69% | 2566 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 38,986 psi | 61% | 2497 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,248 psi | 63% | 2559 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,792 psi | 78% | 2674 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,558 psi | 75% | 2644 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,284 psi | 77% | 2569 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,350 psi | 65% | 2441 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,292 psi | 63% | 2464 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 44,991 psi | 71% | 2677 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 48,805 psi | 76% | 2566 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,574 psi | 78% | 2667 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 39,842 psi | 62% | 2510 fps | 99.4% |
| Somchem S361 | <<locked>> | 98% | 54,186 psi | 85% | 2740 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 29,356 psi | 46% | 2365 fps | 98.1% |
| Somchem S385 | <<locked>> | 92% | 40,625 psi | 64% | 2562 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 49,734 psi | 78% | 2556 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,818 psi | 72% | 2552 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,079 psi | 72% | 2562 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,029 psi | 60% | 2448 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 34,127 psi | 53% | 2411 fps | 96.4% |
| Vihtavuori N165 | <<locked>> | 98% | 42,554 psi | 67% | 2589 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 51,474 psi | 81% | 2674 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,483 psi | 70% | 2556 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,605 psi | 53% | 2411 fps | 96% |
| Vihtavuori N555 | <<locked>> | 84% | 28,935 psi | 45% | 2356 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,605 psi | 53% | 2385 fps | 98.3% |
| Winchester 748 | <<locked>> | 80% | 51,822 psi | 81% | 2723 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 39,726 psi | 62% | 2566 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 88% | 26,716 psi | 42% | 2356 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,253 psi | 74% | 2651 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 46,050 psi | 72% | 2654 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 118 powders for .300 RCM loaded with the .308 | 180gr | Winchester Silvertip. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,900 fps; across all powders the maximum-charge window runs from 1,696 fps to 2,900 fps. Accurate 3100 gives the best case fill at 100 %, and 118 of the 118 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 180.0 gr projectile in 0.308" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2209 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. ReloadSwiss RS 70, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 RCM with the .308 | 180gr | Winchester Silvertip they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 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.