Load Specifications
Bullet Manufacturer:SAKO
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:1:14.0
Load data in caliber .300 RCM with .308 | 180gr | Sako SuperHammerhead bullet and 102 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Winchester 760.
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% | 57,174 psi | 90% | 2657 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 56,231 psi | 88% | 2684 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,056 psi | 85% | 2700 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,114 psi | 86% | 2694 fps | 97.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,105 psi | 68% | 2598 fps | 97.1% |
| Accurate 4064 | <<locked>> | 90% | 56,289 psi | 88% | 2736 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 56,188 psi | 88% | 2825 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 86% | 56,217 psi | 88% | 2762 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 57,217 psi | 90% | 2762 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 50,879 psi | 80% | 2746 fps | 95.9% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,187 psi | 86% | 2713 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 56,478 psi | 89% | 2687 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 56,043 psi | 88% | 2884 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 50,488 psi | 79% | 2743 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 57,653 psi | 90% | 2789 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 54,737 psi | 86% | 2762 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 56,985 psi | 89% | 2874 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 54,940 psi | 86% | 2861 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 49,734 psi | 78% | 2736 fps | 95.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,031 psi | 64% | 2628 fps | 99.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,122 psi | 72% | 2792 fps | 99.1% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 56,144 psi | 88% | 2782 fps | 99.9% |
| Bofors RP3 | <<locked>> | 90% | 54,810 psi | 86% | 2756 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 54,578 psi | 86% | 2726 fps | 97.8% |
| Hodgdon Benchmark | <<locked>> | 84% | 56,985 psi | 89% | 2697 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 54,592 psi | 86% | 2743 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 56,855 psi | 89% | 2844 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 55,405 psi | 87% | 2766 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 96% | 55,187 psi | 86% | 2822 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 94% | 55,753 psi | 87% | 2782 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 86% | 56,782 psi | 89% | 2772 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 53,345 psi | 84% | 2753 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 56,478 psi | 89% | 2808 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 55,724 psi | 87% | 2858 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,752 psi | 56% | 1667 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,679 psi | 86% | 2726 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 57,174 psi | 90% | 2753 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 56,971 psi | 89% | 2749 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 56,739 psi | 89% | 2733 fps | 98.6% |
| IMR 4350 | <<locked>> | 98% | 54,969 psi | 86% | 2756 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 94% | 56,463 psi | 88% | 2759 fps | 98.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 56,521 psi | 89% | 2812 fps | 99.9% |
| IMR 4895 | <<locked>> | 88% | 56,086 psi | 88% | 2789 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 55,187 psi | 86% | 2713 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 56,217 psi | 88% | 2740 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 55,622 psi | 87% | 2690 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 56,782 psi | 89% | 2743 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 55,840 psi | 88% | 2749 fps | 99.3% |
| Lovex S070 | <<locked>> | 98% | 57,043 psi | 89% | 2789 fps | 98.8% |
| Norma 201 | <<locked>> | 86% | 55,056 psi | 86% | 2710 fps | 100% |
| Norma 202 | <<locked>> | 86% | 55,666 psi | 87% | 2710 fps | 100% |
| Norma 203B | <<locked>> | 90% | 57,377 psi | 90% | 2799 fps | 100% |
| Norma 204 | <<locked>> | 98% | 55,448 psi | 87% | 2802 fps | 96.8% |
| Norma MRPᴾ | <<locked>> | 100% | 45,759 psi | 72% | 2746 fps | 96.6% |
| Norma URP | <<locked>> | 98% | 55,143 psi | 86% | 2812 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 88% | 54,215 psi | 85% | 2772 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 57,479 psi | 90% | 2861 fps | 99.3% |
| Ramshot TAC | <<locked>> | 84% | 55,390 psi | 87% | 2736 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 84% | 55,158 psi | 86% | 2753 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,072 psi | 88% | 2720 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,274 psi | 57% | 1709 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 55,883 psi | 88% | 2753 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 54,998 psi | 86% | 2822 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 54,549 psi | 85% | 2858 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 55,680 psi | 87% | 2844 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 55,274 psi | 87% | 2874 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 84% | 56,115 psi | 88% | 2690 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 55,477 psi | 87% | 2707 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 54,694 psi | 86% | 2749 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 48,588 psi | 76% | 2720 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 94% | 54,578 psi | 86% | 2726 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 96% | 55,840 psi | 88% | 2749 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 86% | 56,217 psi | 88% | 2740 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 56,782 psi | 89% | 2743 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 57,043 psi | 89% | 2789 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 56,304 psi | 88% | 2805 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 57,653 psi | 90% | 2769 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 54,636 psi | 86% | 2736 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 56,449 psi | 88% | 2648 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 56,652 psi | 89% | 2644 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 56,130 psi | 88% | 2707 fps | 98.5% |
| Somchem S321 | <<locked>> | 82% | 56,478 psi | 89% | 2746 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 55,811 psi | 87% | 2644 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 57,290 psi | 90% | 2756 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 54,940 psi | 86% | 2746 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 53,142 psi | 83% | 2812 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 49,327 psi | 77% | 2700 fps | 96.9% |
| Vihtavuori N130 | <<locked>> | 82% | 56,086 psi | 88% | 2605 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 56,739 psi | 89% | 2631 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 55,593 psi | 87% | 2671 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 56,275 psi | 88% | 2690 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 56,362 psi | 88% | 2723 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 57,624 psi | 90% | 2805 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 84% | 55,767 psi | 87% | 2713 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 57,696 psi | 90% | 2730 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 56,550 psi | 89% | 2812 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 45,223 psi | 71% | 2700 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 53,998 psi | 85% | 2733 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 55,825 psi | 87% | 2759 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 55,463 psi | 87% | 2825 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,767 psi | 58% | 2644 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 86% | 54,723 psi | 86% | 2746 fps | 100% |
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% | 50,633 psi | 79% | 2569 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,511 psi | 68% | 2507 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,488 psi | 79% | 2651 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 45,295 psi | 71% | 2536 fps | 95.6% |
| Accurate 3100 | <<locked>> | 96% | 37,594 psi | 59% | 2493 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 41,162 psi | 65% | 2507 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 32,358 psi | 51% | 2392 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 46,673 psi | 73% | 2615 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 39,755 psi | 62% | 2470 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 98% | 47,732 psi | 75% | 2690 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,747 psi | 76% | 2618 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 49,414 psi | 77% | 2595 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,699 psi | 67% | 2654 fps | 98.9% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 47,427 psi | 74% | 2690 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,479 psi | 62% | 2493 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,337 psi | 66% | 2556 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 82% | 32,634 psi | 51% | 2402 fps | 95.7% |
| Alliant Reloder-17 | 50.8 gr | 80% | 34,171 psi | 54% | 2470 fps | 98.1% |
| Alliant Reloder-19 | <<locked>> | 98% | 46,760 psi | 73% | 2684 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 88% | 28,369 psi | 44% | 2316 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 92% | 34,650 psi | 54% | 2539 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,977 psi | 72% | 2621 fps | 99.1% |
| Bofors RP3 | <<locked>> | 80% | 39,218 psi | 61% | 2500 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 42,699 psi | 67% | 2523 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,459 psi | 79% | 2602 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,921 psi | 75% | 2644 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 53,055 psi | 83% | 2789 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 80% | 40,089 psi | 63% | 2503 fps | 97.4% |
| Hodgdon H414 | <<locked>> | 86% | 39,682 psi | 62% | 2549 fps | 95% |
| Hodgdon H4350 | <<locked>> | 88% | 46,050 psi | 72% | 2621 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 47,108 psi | 74% | 2625 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,137 psi | 44% | 2257 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,323 psi | 68% | 2602 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 88% | 41,858 psi | 66% | 2615 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,600 psi | 42% | 1490 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,295 psi | 71% | 2579 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 47,152 psi | 74% | 2615 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,713 psi | 65% | 2503 fps | 98.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,179 psi | 69% | 2526 fps | 96.2% |
| IMR 4350 | <<locked>> | 90% | 42,917 psi | 67% | 2552 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 41,582 psi | 65% | 2503 fps | 95.3% |
| IMR 4831 | <<locked>> | 82% | 31,473 psi | 49% | 2352 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 43,366 psi | 68% | 2582 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 80% | 48,747 psi | 76% | 2618 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,137 psi | 72% | 2595 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,485 psi | 73% | 2549 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 41,756 psi | 65% | 2507 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 36,405 psi | 57% | 2402 fps | 95.4% |
| Lovex S070 | <<locked>> | 86% | 39,291 psi | 62% | 2484 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 45,876 psi | 72% | 2569 fps | 100% |
| Norma 202 | <<locked>> | 80% | 46,050 psi | 72% | 2569 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,742 psi | 65% | 2546 fps | 99.2% |
| Norma 204 | <<locked>> | 94% | 48,457 psi | 76% | 2690 fps | 95.3% |
| Norma MRP | <<locked>> | 98% | 42,917 psi | 67% | 2690 fps | 95.7% |
| Norma URP | <<locked>> | 82% | 32,779 psi | 51% | 2395 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 41,466 psi | 65% | 2562 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 38,812 psi | 61% | 2539 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 48,660 psi | 76% | 2631 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,269 psi | 76% | 2648 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 52,562 psi | 82% | 2667 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,948 psi | 42% | 1522 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,422 psi | 63% | 2490 fps | 95.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,918 psi | 70% | 2661 fps | 99.3% |
| ReloadSwiss RS 60 | 50.8 gr | 80% | 36,361 psi | 57% | 2536 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 32,155 psi | 50% | 2405 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 36,680 psi | 57% | 2523 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 49,835 psi | 78% | 2602 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,613 psi | 68% | 2523 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 37,014 psi | 58% | 2448 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 98% | 45,527 psi | 71% | 2664 fps | 95% |
| Rottweil R 907 | <<locked>> | 86% | 42,699 psi | 67% | 2523 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 82% | 36,405 psi | 57% | 2402 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,137 psi | 72% | 2595 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,756 psi | 65% | 2507 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 39,291 psi | 62% | 2484 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,927 psi | 59% | 2497 fps | 98.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,021 psi | 74% | 2605 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,165 psi | 71% | 2585 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,065 psi | 74% | 2516 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,291 psi | 62% | 2388 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 40,770 psi | 64% | 2454 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 52,866 psi | 83% | 2697 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 46,731 psi | 73% | 2516 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,818 psi | 73% | 2602 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 37,826 psi | 59% | 2454 fps | 98.8% |
| Somchem S365 | <<locked>> | 80% | 27,427 psi | 43% | 2293 fps | 96.9% |
| Somchem S385 | <<locked>> | 96% | 43,149 psi | 68% | 2595 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 52,953 psi | 83% | 2566 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,427 psi | 74% | 2507 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,279 psi | 68% | 2500 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,743 psi | 69% | 2507 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,911 psi | 56% | 2388 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 31,981 psi | 50% | 2343 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 48,834 psi | 77% | 2615 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,177 psi | 66% | 2500 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 33,634 psi | 53% | 2398 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 88% | 30,501 psi | 48% | 2388 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,734 psi | 50% | 2320 fps | 97.3% |
| Winchester 748 | <<locked>> | 80% | 48,936 psi | 77% | 2661 fps | 100% |
| Winchester 760 | 53.5 gr | 86% | 39,900 psi | 63% | 2552 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 92% | 28,456 psi | 45% | 2395 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,628 psi | 70% | 2589 fps | 99.8% |
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 102 powders for .300 RCM loaded with the .308 | 180gr | Sako SuperHammerhead. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,884 fps; across all powders the maximum-charge window runs from 1,667 fps to 2,884 fps. Accurate 3100 gives the best case fill at 100 %, and 102 of the 102 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 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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 Reloder-17, ReloadSwiss RS 60, Winchester 760 rank at the top here: for .300 RCM with the .308 | 180gr | Sako SuperHammerhead 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.