Load Specifications
Bullet:.308 | 170gr | Sako Blade
Bullet Manufacturer:SAKO
Bullet Weight:170 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:1:10.5
Load data in caliber .300 RCM with .308 | 170gr | Sako Blade bullet and 106 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 and ReloadSwiss RS 52.
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>> | 88% | 56,768 psi | 89% | 2713 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 55,274 psi | 87% | 2743 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 54,360 psi | 85% | 2730 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 57,421 psi | 90% | 2805 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 55,085 psi | 86% | 2733 fps | 96.4% |
| Accurate 4064 | <<locked>> | 94% | 54,259 psi | 85% | 2772 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,183 psi | 79% | 2792 fps | 98.9% |
| Accurate LT-30 | <<locked>> | 82% | 56,202 psi | 88% | 2661 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 56,623 psi | 89% | 2687 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,999 psi | 88% | 2812 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 96% | 57,072 psi | 89% | 2812 fps | 99.7% |
| ADI AR 2219 | <<locked>> | 82% | 57,392 psi | 90% | 2782 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 55,317 psi | 87% | 2769 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 55,680 psi | 87% | 2746 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 56,942 psi | 89% | 2871 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 55,695 psi | 87% | 2930 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 56,536 psi | 89% | 2828 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 56,811 psi | 89% | 2720 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 57,537 psi | 90% | 2854 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,443 psi | 77% | 2805 fps | 99% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 57,595 psi | 90% | 2953 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,635 psi | 54% | 2526 fps | 96.8% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,361 psi | 87% | 2657 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 56,086 psi | 88% | 2831 fps | 99.6% |
| Bofors RP3 | <<locked>> | 96% | 57,188 psi | 90% | 2848 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 57,609 psi | 90% | 2812 fps | 97.2% |
| Hodgdon Benchmark | <<locked>> | 88% | 57,145 psi | 90% | 2753 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 54,172 psi | 85% | 2795 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 56,289 psi | 88% | 2894 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 84% | 56,086 psi | 88% | 2762 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 57,217 psi | 90% | 2792 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 54,752 psi | 86% | 2805 fps | 99% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 53,882 psi | 84% | 2848 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 98% | 55,085 psi | 86% | 2815 fps | 96% |
| Hodgdon H4895 | <<locked>> | 90% | 56,536 psi | 89% | 2825 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,397 psi | 71% | 2684 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 55,579 psi | 87% | 2854 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 55,376 psi | 87% | 2890 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,925 psi | 55% | 1677 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 54,389 psi | 85% | 2776 fps | 99.9% |
| IMR 3031 | <<locked>> | 90% | 56,231 psi | 88% | 2805 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 56,521 psi | 89% | 2795 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 92% | 56,913 psi | 89% | 2776 fps | 97.6% |
| IMR 4198 | <<locked>> | 84% | 56,811 psi | 89% | 2677 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 50,676 psi | 79% | 2730 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 98% | 56,420 psi | 88% | 2799 fps | 97.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,950 psi | 75% | 2740 fps | 98.6% |
| IMR 4895 | <<locked>> | 92% | 55,100 psi | 86% | 2831 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 88% | 55,317 psi | 87% | 2769 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 55,288 psi | 87% | 2753 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 55,506 psi | 87% | 2789 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,883 psi | 88% | 2743 fps | 99.9% |
| Lovex S062 | <<locked>> | 94% | 55,883 psi | 88% | 2785 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,969 psi | 86% | 2782 fps | 98.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 52,272 psi | 82% | 2762 fps | 97.1% |
| Norma 201 | <<locked>> | 90% | 54,520 psi | 85% | 2759 fps | 100% |
| Norma 202 | <<locked>> | 90% | 55,245 psi | 87% | 2762 fps | 100% |
| Norma 203B | <<locked>> | 94% | 56,608 psi | 89% | 2841 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 49,879 psi | 78% | 2785 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 94% | 57,261 psi | 90% | 2867 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,139 psi | 77% | 2779 fps | 97.2% |
| Ramshot TAC | <<locked>> | 88% | 55,854 psi | 88% | 2789 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 88% | 55,143 psi | 86% | 2805 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 86% | 56,362 psi | 88% | 2772 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,360 psi | 55% | 1716 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 54,984 psi | 86% | 2753 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 55,405 psi | 87% | 2789 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 54,201 psi | 85% | 2867 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 57,363 psi | 90% | 2953 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,951 psi | 78% | 2815 fps | 98.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,691 psi | 79% | 2841 fps | 98.4% |
| Rottweil R 901 | <<locked>> | 88% | 55,390 psi | 87% | 2740 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 55,071 psi | 86% | 2756 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 56,724 psi | 89% | 2831 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 57,609 psi | 90% | 2812 fps | 97.2% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,969 psi | 86% | 2782 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 90% | 55,506 psi | 87% | 2789 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 55,883 psi | 88% | 2785 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 52,272 psi | 82% | 2762 fps | 97.1% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 54,476 psi | 85% | 2720 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 55,405 psi | 87% | 2851 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 54,346 psi | 85% | 2697 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 57,638 psi | 90% | 2815 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 54,578 psi | 86% | 2789 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 56,840 psi | 89% | 2703 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 56,768 psi | 89% | 2700 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 55,927 psi | 88% | 2743 fps | 97.4% |
| Somchem S321 | <<locked>> | 86% | 56,420 psi | 88% | 2802 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 55,680 psi | 87% | 2700 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 57,290 psi | 90% | 2808 fps | 99.9% |
| Somchem S355 | <<locked>> | 98% | 57,217 psi | 90% | 2831 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,382 psi | 70% | 2733 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 86% | 56,333 psi | 88% | 2667 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 56,956 psi | 89% | 2690 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 54,404 psi | 85% | 2720 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 55,840 psi | 88% | 2743 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,347 psi | 87% | 2762 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,547 psi | 82% | 2785 fps | 99% |
| Vihtavuori N530 | <<locked>> | 88% | 55,753 psi | 87% | 2769 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 57,392 psi | 90% | 2785 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 51,663 psi | 81% | 2792 fps | 98.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,014 psi | 58% | 2602 fps | 96.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,490 psi | 84% | 2772 fps | 100% |
| Winchester 748 | <<locked>> | 88% | 55,405 psi | 87% | 2815 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 54,143 psi | 85% | 2854 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 90% | 54,317 psi | 85% | 2795 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% | 44,193 psi | 69% | 2536 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,182 psi | 76% | 2641 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,376 psi | 57% | 2451 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,337 psi | 68% | 2598 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 51,517 psi | 81% | 2677 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 34,403 psi | 54% | 2438 fps | 99.7% |
| Accurate 4350 | <<locked>> | 90% | 35,201 psi | 55% | 2513 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 80% | 52,823 psi | 83% | 2615 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 53,214 psi | 83% | 2641 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,756 psi | 64% | 2556 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 80% | 34,751 psi | 54% | 2408 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 80% | 53,519 psi | 84% | 2730 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,873 psi | 67% | 2569 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 80% | 42,438 psi | 67% | 2562 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,995 psi | 78% | 2766 fps | 99.8% |
| Alliant Power Pro 2000-MR | 48 gr | 80% | 36,753 psi | 58% | 2569 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,765 psi | 53% | 2425 fps | 97.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,951 psi | 78% | 2628 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,550 psi | 57% | 2487 fps | 96.6% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,158 psi | 57% | 2533 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 82% | 31,241 psi | 49% | 2438 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 98% | 32,576 psi | 51% | 2474 fps | 95.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,996 psi | 81% | 2612 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,755 psi | 62% | 2556 fps | 96.9% |
| Bofors RP3 | <<locked>> | 80% | 33,170 psi | 52% | 2425 fps | 97.2% |
| Bofors RP7 | <<locked>> | 94% | 47,718 psi | 75% | 2657 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,773 psi | 70% | 2562 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,104 psi | 64% | 2582 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,339 psi | 71% | 2720 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 80% | 49,008 psi | 77% | 2664 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,995 psi | 78% | 2690 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 36,593 psi | 57% | 2480 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 96% | 47,108 psi | 74% | 2736 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 96% | 51,750 psi | 81% | 2762 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 41,118 psi | 64% | 2569 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 30,937 psi | 48% | 2375 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,970 psi | 58% | 2533 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 96% | 47,848 psi | 75% | 2762 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,904 psi | 41% | 1496 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,479 psi | 62% | 2520 fps | 98.3% |
| IMR 3031 | <<locked>> | 80% | 40,451 psi | 63% | 2569 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,405 psi | 57% | 2441 fps | 96.6% |
| IMR 4166 Enduron | <<locked>> | 86% | 47,108 psi | 74% | 2618 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 50,546 psi | 79% | 2592 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 47,616 psi | 75% | 2680 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 46,717 psi | 73% | 2641 fps | 95.4% |
| IMR 4831 | <<locked>> | 90% | 34,287 psi | 54% | 2474 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 37,434 psi | 59% | 2516 fps | 97.5% |
| IMR 8208 XBR | <<locked>> | 80% | 42,873 psi | 67% | 2569 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 80% | 48,182 psi | 76% | 2651 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 39,175 psi | 61% | 2533 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 41,321 psi | 65% | 2500 fps | 98.3% |
| Lovex S062 | <<locked>> | 80% | 36,071 psi | 57% | 2448 fps | 98.3% |
| Lovex S065 | <<locked>> | 90% | 40,321 psi | 63% | 2533 fps | 95.3% |
| Lovex S070 | <<locked>> | 96% | 46,122 psi | 72% | 2661 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 39,740 psi | 62% | 2510 fps | 99% |
| Norma 202 | <<locked>> | 80% | 39,943 psi | 63% | 2520 fps | 100% |
| Norma 203B | <<locked>> | 80% | 35,897 psi | 56% | 2474 fps | 97% |
| Norma URP | <<locked>> | 90% | 36,042 psi | 56% | 2523 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 35,317 psi | 55% | 2484 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 96% | 43,163 psi | 68% | 2671 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 42,714 psi | 67% | 2566 fps | 96.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,076 psi | 66% | 2589 fps | 98.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,296 psi | 73% | 2615 fps | 99% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,150 psi | 41% | 1532 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,240 psi | 76% | 2654 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 42,554 psi | 67% | 2575 fps | 95.1% |
| ReloadSwiss RS 52 | 46.5 gr | 80% | 37,826 psi | 59% | 2579 fps | 96.9% |
| ReloadSwiss RS 60 | 47.3 gr | 80% | 31,140 psi | 49% | 2448 fps | 98% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 37,782 psi | 59% | 2589 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,220 psi | 65% | 2657 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 43,395 psi | 68% | 2552 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 37,884 psi | 59% | 2464 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 80% | 31,125 psi | 49% | 2369 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 94% | 47,718 psi | 75% | 2657 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 40,321 psi | 63% | 2533 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,175 psi | 61% | 2533 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 36,071 psi | 57% | 2448 fps | 98.3% |
| Shooters World SW4350 | <<locked>> | 96% | 46,122 psi | 72% | 2661 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,865 psi | 80% | 2667 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,285 psi | 51% | 2415 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,952 psi | 80% | 2651 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,770 psi | 64% | 2539 fps | 96.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,189 psi | 61% | 2523 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,408 psi | 65% | 2474 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,113 psi | 53% | 2343 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 45,600 psi | 71% | 2582 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 46,064 psi | 72% | 2644 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 40,930 psi | 64% | 2477 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,495 psi | 63% | 2539 fps | 98% |
| Somchem S355 | <<locked>> | 80% | 32,184 psi | 50% | 2379 fps | 96.2% |
| Somchem S365 | <<locked>> | 86% | 28,050 psi | 44% | 2356 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 46,920 psi | 74% | 2539 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,684 psi | 65% | 2470 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,985 psi | 58% | 2451 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,927 psi | 59% | 2461 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 30,560 psi | 48% | 2320 fps | 97.1% |
| Vihtavuori N160 | <<locked>> | 88% | 35,375 psi | 55% | 2470 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 42,873 psi | 67% | 2566 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 80% | 36,463 psi | 57% | 2451 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 90% | 36,956 psi | 58% | 2523 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 96% | 32,445 psi | 51% | 2493 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 31,169 psi | 49% | 2346 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 42,105 psi | 66% | 2605 fps | 99.7% |
| Winchester 760 | <<locked>> | 94% | 44,222 psi | 69% | 2684 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,479 psi | 60% | 2526 fps | 98.2% |
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 117 powders for .300 RCM loaded with the .308 | 170gr | Sako Blade. Alliant Reloder-17 delivers the highest muzzle velocity at 2,953 fps; across all powders the maximum-charge window runs from 1,677 fps to 2,953 fps. Accurate 3100 gives the best case fill at 100 %, and 117 of the 117 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 48–90 %, leaving at least 10 % headroom. The 170.0 gr projectile in 0.308" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 60, ReloadSwiss RS 52 rank at the top here: for .300 RCM with the .308 | 170gr | Sako Blade they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 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.