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:1:15.0
Load data in caliber .300 RCM with .308 | 180gr | Sako Hammerhead bullet and 101 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 Hodgdon H414.
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 2015 | <<locked>> | 82% | 54,636 psi | 86% | 2628 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 57,246 psi | 90% | 2700 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,984 psi | 86% | 2720 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,796 psi | 87% | 2710 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,961 psi | 69% | 2618 fps | 97.4% |
| Accurate 4064 | <<locked>> | 90% | 57,261 psi | 90% | 2749 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 57,290 psi | 90% | 2844 fps | 100% |
| ADI AR 2206H | <<locked>> | 86% | 57,087 psi | 89% | 2779 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 54,549 psi | 85% | 2733 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 51,750 psi | 81% | 2769 fps | 96.3% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,014 psi | 88% | 2730 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 57,290 psi | 90% | 2700 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 57,159 psi | 90% | 2907 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 54,955 psi | 86% | 2756 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,288 psi | 87% | 2776 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 54,505 psi | 85% | 2844 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 55,608 psi | 87% | 2877 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 50,589 psi | 79% | 2756 fps | 96.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,843 psi | 66% | 2651 fps | 99.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,862 psi | 73% | 2815 fps | 99.3% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 56,942 psi | 89% | 2799 fps | 100% |
| Bofors RP3 | <<locked>> | 90% | 55,651 psi | 87% | 2772 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,274 psi | 87% | 2743 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 84% | 57,551 psi | 90% | 2710 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,419 psi | 87% | 2759 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 56,478 psi | 89% | 2785 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 96% | 56,188 psi | 88% | 2841 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 94% | 56,478 psi | 89% | 2799 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 86% | 57,667 psi | 90% | 2789 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 54,389 psi | 85% | 2769 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 57,290 psi | 90% | 2822 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 56,521 psi | 89% | 2877 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,824 psi | 56% | 1677 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,230 psi | 87% | 2740 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,273 psi | 85% | 2720 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 57,464 psi | 90% | 2762 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 57,493 psi | 90% | 2749 fps | 98.7% |
| IMR 4350 | <<locked>> | 98% | 55,637 psi | 87% | 2772 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 94% | 57,159 psi | 90% | 2776 fps | 98.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 57,508 psi | 90% | 2831 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 56,652 psi | 89% | 2805 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 56,014 psi | 88% | 2730 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 57,130 psi | 90% | 2756 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,434 psi | 88% | 2710 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 57,667 psi | 90% | 2759 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 56,855 psi | 89% | 2769 fps | 99.5% |
| Lovex S070 | <<locked>> | 96% | 54,302 psi | 85% | 2756 fps | 98.5% |
| Norma 201 | <<locked>> | 86% | 55,912 psi | 88% | 2726 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,246 psi | 88% | 2723 fps | 100% |
| Norma 203B | <<locked>> | 88% | 54,505 psi | 85% | 2762 fps | 100% |
| Norma 204 | <<locked>> | 98% | 56,362 psi | 88% | 2822 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 46,775 psi | 73% | 2772 fps | 97% |
| Norma URP | <<locked>> | 98% | 55,854 psi | 88% | 2828 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 55,245 psi | 87% | 2789 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 54,607 psi | 86% | 2825 fps | 99.1% |
| Ramshot TAC | <<locked>> | 84% | 56,101 psi | 88% | 2753 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 84% | 55,956 psi | 88% | 2769 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,579 psi | 89% | 2730 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,347 psi | 57% | 1716 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 56,550 psi | 89% | 2769 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 55,927 psi | 88% | 2841 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 55,622 psi | 87% | 2877 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 56,695 psi | 89% | 2864 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 56,101 psi | 88% | 2894 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 84% | 56,782 psi | 89% | 2703 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,376 psi | 88% | 2723 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,521 psi | 87% | 2762 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 49,226 psi | 77% | 2736 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 94% | 55,274 psi | 87% | 2743 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 96% | 56,855 psi | 89% | 2769 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 86% | 57,130 psi | 90% | 2756 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 57,667 psi | 90% | 2759 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,302 psi | 85% | 2756 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 57,072 psi | 89% | 2822 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,636 psi | 86% | 2733 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,376 psi | 87% | 2753 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 57,043 psi | 89% | 2657 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 57,450 psi | 90% | 2657 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 57,087 psi | 89% | 2726 fps | 98.7% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 48,762 psi | 76% | 2730 fps | 96% |
| Somchem S321 | <<locked>> | 82% | 57,319 psi | 90% | 2762 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 56,681 psi | 89% | 2661 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,346 psi | 85% | 2723 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 55,753 psi | 87% | 2762 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 54,215 psi | 85% | 2828 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,227 psi | 79% | 2723 fps | 97.2% |
| Vihtavuori N130 | <<locked>> | 82% | 56,782 psi | 89% | 2618 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 57,348 psi | 90% | 2641 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,289 psi | 88% | 2687 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 56,782 psi | 89% | 2700 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 57,130 psi | 90% | 2736 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,708 psi | 86% | 2772 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 84% | 56,347 psi | 88% | 2730 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,042 psi | 86% | 2700 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 57,522 psi | 90% | 2831 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,195 psi | 72% | 2720 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,781 psi | 86% | 2749 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 56,724 psi | 89% | 2776 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 56,188 psi | 88% | 2841 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,391 psi | 59% | 2667 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 86% | 55,506 psi | 87% | 2762 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% | 51,300 psi | 80% | 2585 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,222 psi | 69% | 2523 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,358 psi | 80% | 2667 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,062 psi | 67% | 2500 fps | 95.1% |
| Accurate 3100 | <<locked>> | 96% | 38,261 psi | 60% | 2510 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 41,843 psi | 66% | 2520 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 30,777 psi | 48% | 2356 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 47,268 psi | 74% | 2628 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 40,277 psi | 63% | 2487 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 98% | 48,312 psi | 76% | 2710 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,342 psi | 77% | 2631 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,227 psi | 79% | 2608 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,192 psi | 68% | 2671 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,074 psi | 63% | 2510 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,931 psi | 67% | 2572 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,096 psi | 49% | 2365 fps | 95% |
| Alliant Reloder-17 | 51.5 gr | 80% | 34,650 psi | 54% | 2487 fps | 98.3% |
| Alliant Reloder-19 | <<locked>> | 98% | 47,543 psi | 75% | 2703 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 88% | 28,892 psi | 45% | 2336 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 90% | 33,025 psi | 52% | 2503 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,746 psi | 73% | 2641 fps | 99.3% |
| Bofors RP3 | <<locked>> | 80% | 39,987 psi | 63% | 2516 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 43,207 psi | 68% | 2539 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,053 psi | 80% | 2618 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,515 psi | 76% | 2657 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,625 psi | 64% | 2520 fps | 97.6% |
| Hodgdon H414 | 54.2 gr | 86% | 40,379 psi | 63% | 2566 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 88% | 46,775 psi | 73% | 2641 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 47,761 psi | 75% | 2638 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,587 psi | 45% | 2274 fps | 96% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,888 psi | 69% | 2615 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 42,627 psi | 67% | 2635 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,774 psi | 42% | 1496 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,876 psi | 72% | 2595 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 47,921 psi | 75% | 2628 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,322 psi | 66% | 2520 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,672 psi | 70% | 2539 fps | 96.4% |
| IMR 4350 | <<locked>> | 90% | 43,569 psi | 68% | 2569 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,264 psi | 66% | 2523 fps | 95.7% |
| IMR 4831 | <<locked>> | 82% | 31,995 psi | 50% | 2369 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 44,019 psi | 69% | 2598 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 49,342 psi | 77% | 2631 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,775 psi | 73% | 2608 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,079 psi | 74% | 2566 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 42,322 psi | 66% | 2523 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 37,115 psi | 58% | 2425 fps | 95.8% |
| Lovex S070 | <<locked>> | 86% | 39,755 psi | 62% | 2497 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 46,499 psi | 73% | 2585 fps | 100% |
| Norma 202 | <<locked>> | 80% | 46,702 psi | 73% | 2585 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,322 psi | 66% | 2559 fps | 99.3% |
| Norma 204 | <<locked>> | 94% | 49,356 psi | 77% | 2710 fps | 95.6% |
| Norma MRP | <<locked>> | 96% | 40,799 psi | 64% | 2651 fps | 95.2% |
| Norma URP | <<locked>> | 82% | 33,257 psi | 52% | 2411 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 41,974 psi | 66% | 2575 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 36,912 psi | 58% | 2500 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 49,371 psi | 77% | 2648 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,037 psi | 77% | 2667 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,098 psi | 83% | 2680 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,137 psi | 43% | 1532 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,930 psi | 64% | 2503 fps | 96.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,556 psi | 71% | 2674 fps | 99.4% |
| ReloadSwiss RS 60 | 51.5 gr | 80% | 36,869 psi | 58% | 2549 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 32,764 psi | 51% | 2425 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 34,853 psi | 55% | 2484 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 50,517 psi | 79% | 2615 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,251 psi | 69% | 2536 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 37,594 psi | 59% | 2464 fps | 99% |
| Rottweil R 905 | <<locked>> | 98% | 46,180 psi | 72% | 2684 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 86% | 43,207 psi | 68% | 2539 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 82% | 37,115 psi | 58% | 2425 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,775 psi | 73% | 2608 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,322 psi | 66% | 2523 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 39,755 psi | 62% | 2497 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,421 psi | 60% | 2510 fps | 98.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,790 psi | 75% | 2625 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,730 psi | 72% | 2602 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,442 psi | 74% | 2526 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,653 psi | 62% | 2398 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 41,263 psi | 65% | 2467 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 45,745 psi | 72% | 2677 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 53,693 psi | 84% | 2713 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 47,311 psi | 74% | 2530 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,572 psi | 75% | 2618 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 38,363 psi | 60% | 2467 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 28,021 psi | 44% | 2313 fps | 97.3% |
| Somchem S385 | <<locked>> | 96% | 44,005 psi | 69% | 2615 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 53,374 psi | 84% | 2575 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,834 psi | 75% | 2516 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,729 psi | 69% | 2510 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,338 psi | 69% | 2523 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,463 psi | 57% | 2405 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 32,460 psi | 51% | 2359 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 49,719 psi | 78% | 2631 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,714 psi | 67% | 2516 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 32,053 psi | 50% | 2362 fps | 95% |
| Vihtavuori N555 | <<locked>> | 86% | 29,211 psi | 46% | 2356 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,227 psi | 51% | 2339 fps | 97.6% |
| Winchester 748 | <<locked>> | 80% | 49,530 psi | 78% | 2674 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 40,379 psi | 63% | 2566 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,180 psi | 43% | 2356 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,426 psi | 71% | 2605 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 101 powders for .300 RCM loaded with the .308 | 180gr | Sako Hammerhead. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,907 fps; across all powders the maximum-charge window runs from 1,677 fps to 2,907 fps. Accurate 3100 gives the best case fill at 100 %, and 101 of the 101 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 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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, Hodgdon H414 rank at the top here: for .300 RCM with the .308 | 180gr | Sako Hammerhead 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.