Load Specifications
Bullet Manufacturer:Norma
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:1:17.0
Load data in caliber .300 RCM with .308 | 180gr | Norma Soft Point ALASKA bullet and 102 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>> | 82% | 55,709 psi | 87% | 2651 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,027 psi | 86% | 2680 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,202 psi | 88% | 2743 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,971 psi | 89% | 2740 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,585 psi | 71% | 2654 fps | 97.9% |
| Accurate 4064 | <<locked>> | 88% | 55,056 psi | 86% | 2730 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,230 psi | 87% | 2825 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 54,853 psi | 86% | 2759 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 55,883 psi | 88% | 2762 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 52,939 psi | 83% | 2799 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 57,188 psi | 90% | 2756 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,172 psi | 86% | 2680 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,679 psi | 86% | 2877 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 52,852 psi | 83% | 2799 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,362 psi | 88% | 2785 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 56,637 psi | 89% | 2805 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,985 psi | 88% | 2874 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 57,450 psi | 90% | 2910 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,054 psi | 82% | 2789 fps | 96.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,018 psi | 67% | 2680 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 37,826 psi | 59% | 2582 fps | 96.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,515 psi | 76% | 2851 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,607 psi | 86% | 2776 fps | 99.9% |
| Bofors RP3 | <<locked>> | 90% | 57,043 psi | 89% | 2799 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 56,710 psi | 89% | 2776 fps | 98.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,376 psi | 87% | 2690 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,101 psi | 89% | 2789 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,085 psi | 85% | 2762 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 96% | 57,653 psi | 90% | 2874 fps | 99% |
| Hodgdon H4350 | <<locked>> | 92% | 54,578 psi | 86% | 2782 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 84% | 55,448 psi | 87% | 2769 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,941 psi | 88% | 2799 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,216 psi | 87% | 2805 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 54,244 psi | 85% | 2854 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,853 psi | 56% | 1686 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 56,623 psi | 89% | 2769 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,709 psi | 87% | 2746 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,463 psi | 87% | 2743 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,071 psi | 86% | 2726 fps | 98.6% |
| IMR 4350 | <<locked>> | 98% | 57,217 psi | 90% | 2805 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,940 psi | 86% | 2753 fps | 98.5% |
| IMR 4831 | <<locked>> | 98% | 55,477 psi | 87% | 2812 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 54,737 psi | 86% | 2785 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 57,188 psi | 90% | 2756 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 54,868 psi | 86% | 2733 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 57,508 psi | 90% | 2733 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,376 psi | 87% | 2736 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 54,708 psi | 86% | 2749 fps | 99.4% |
| Lovex S070 | <<locked>> | 96% | 55,738 psi | 87% | 2789 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 37,913 psi | 59% | 2510 fps | 95.9% |
| Norma 201 | <<locked>> | 86% | 57,101 psi | 89% | 2753 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,143 psi | 85% | 2700 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,883 psi | 88% | 2789 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,186 psi | 85% | 2799 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 48,167 psi | 75% | 2805 fps | 97.5% |
| Norma URP | <<locked>> | 98% | 57,435 psi | 90% | 2858 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 56,536 psi | 89% | 2815 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 56,260 psi | 88% | 2858 fps | 99.4% |
| Ramshot TAC | <<locked>> | 84% | 57,319 psi | 90% | 2782 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 84% | 57,246 psi | 90% | 2795 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,390 psi | 57% | 1726 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,201 psi | 85% | 2746 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 57,508 psi | 90% | 2871 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 57,174 psi | 90% | 2904 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 54,636 psi | 86% | 2841 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 57,595 psi | 90% | 2927 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 54,766 psi | 86% | 2684 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 57,537 psi | 90% | 2749 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 56,913 psi | 89% | 2792 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 54,897 psi | 86% | 2776 fps | 96% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 50,908 psi | 80% | 2772 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 94% | 56,710 psi | 89% | 2776 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 94% | 54,708 psi | 86% | 2749 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,868 psi | 86% | 2733 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,376 psi | 87% | 2736 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 55,738 psi | 87% | 2789 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,911 psi | 86% | 2802 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,217 psi | 88% | 2762 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,695 psi | 89% | 2779 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,810 psi | 86% | 2641 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,332 psi | 87% | 2641 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,694 psi | 86% | 2703 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 50,415 psi | 79% | 2766 fps | 96.6% |
| Somchem S335 | <<locked>> | 84% | 54,549 psi | 85% | 2641 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,593 psi | 87% | 2749 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 57,087 psi | 89% | 2789 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,883 psi | 88% | 2858 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,779 psi | 81% | 2756 fps | 97.6% |
| Vihtavuori N133 | <<locked>> | 84% | 55,201 psi | 87% | 2625 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 57,624 psi | 90% | 2710 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 54,868 psi | 86% | 2684 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,926 psi | 86% | 2717 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 56,507 psi | 89% | 2805 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 82% | 54,114 psi | 85% | 2707 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 56,289 psi | 88% | 2726 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,477 psi | 87% | 2812 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,703 psi | 75% | 2753 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 56,507 psi | 89% | 2782 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,476 psi | 85% | 2756 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 54,186 psi | 85% | 2822 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,551 psi | 60% | 2707 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 86% | 56,855 psi | 89% | 2789 fps | 100% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 52,417 psi | 82% | 2608 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,324 psi | 71% | 2546 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,576 psi | 82% | 2694 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,005 psi | 69% | 2526 fps | 95.6% |
| Accurate 3100 | <<locked>> | 94% | 37,086 psi | 58% | 2493 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 42,859 psi | 67% | 2546 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 31,836 psi | 50% | 2385 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 48,472 psi | 76% | 2657 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 41,162 psi | 65% | 2513 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 96% | 46,557 psi | 73% | 2687 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,517 psi | 79% | 2657 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,445 psi | 81% | 2631 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,498 psi | 70% | 2707 fps | 99.4% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 46,543 psi | 73% | 2690 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,220 psi | 65% | 2539 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,077 psi | 69% | 2598 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,966 psi | 50% | 2398 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 35,534 psi | 56% | 2516 fps | 98.7% |
| Alliant Reloder-19 | <<locked>> | 96% | 45,919 psi | 72% | 2680 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 27,905 psi | 44% | 2313 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 98% | 35,636 psi | 56% | 2526 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 90% | 34,040 psi | 53% | 2539 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,805 psi | 75% | 2667 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 40,944 psi | 64% | 2543 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 41,553 psi | 65% | 2516 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,953 psi | 81% | 2641 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,864 psi | 78% | 2687 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,698 psi | 65% | 2549 fps | 98% |
| Hodgdon H414 | <<locked>> | 84% | 38,856 psi | 61% | 2543 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 86% | 44,933 psi | 70% | 2618 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 48,936 psi | 77% | 2667 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,341 psi | 46% | 2300 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,078 psi | 71% | 2644 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 40,785 psi | 64% | 2608 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,832 psi | 42% | 1506 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,804 psi | 73% | 2618 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 49,081 psi | 77% | 2654 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,265 psi | 68% | 2546 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,701 psi | 72% | 2569 fps | 96.9% |
| IMR 4350 | <<locked>> | 88% | 41,872 psi | 66% | 2546 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 82% | 40,538 psi | 64% | 2497 fps | 95.3% |
| IMR 4831 | <<locked>> | 80% | 30,951 psi | 49% | 2349 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 45,179 psi | 71% | 2628 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 50,517 psi | 79% | 2657 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,022 psi | 75% | 2635 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,964 psi | 75% | 2589 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 43,294 psi | 68% | 2549 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 35,665 psi | 56% | 2398 fps | 95.4% |
| Lovex S070 | <<locked>> | 84% | 38,334 psi | 60% | 2477 fps | 95.1% |
| Lovex S071 | <<locked>> | 98% | 35,491 psi | 56% | 2461 fps | 95% |
| Norma 201 | <<locked>> | 80% | 47,456 psi | 74% | 2608 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,964 psi | 75% | 2612 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,468 psi | 68% | 2589 fps | 99.5% |
| Norma 204 | <<locked>> | 92% | 47,355 psi | 74% | 2687 fps | 95.4% |
| Norma MRP | <<locked>> | 96% | 42,105 psi | 66% | 2687 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 31,995 psi | 50% | 2385 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 43,294 psi | 68% | 2608 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 37,942 psi | 59% | 2533 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 50,328 psi | 79% | 2674 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,125 psi | 79% | 2690 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,180 psi | 43% | 1542 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,887 psi | 66% | 2533 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,847 psi | 73% | 2707 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,811 psi | 59% | 2579 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,502 psi | 49% | 2398 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 35,926 psi | 56% | 2520 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 51,605 psi | 81% | 2641 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,194 psi | 71% | 2562 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 38,551 psi | 60% | 2490 fps | 99.2% |
| Rottweil R 904 | <<locked>> | 98% | 51,314 psi | 80% | 2720 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 96% | 44,585 psi | 70% | 2661 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 84% | 41,553 psi | 65% | 2516 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,665 psi | 56% | 2398 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,022 psi | 75% | 2635 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,294 psi | 68% | 2549 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 38,334 psi | 60% | 2477 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,523 psi | 62% | 2539 fps | 98.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,066 psi | 77% | 2654 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,804 psi | 73% | 2628 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,414 psi | 76% | 2549 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,582 psi | 64% | 2425 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 39,668 psi | 62% | 2444 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 47,021 psi | 74% | 2710 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 48,225 psi | 76% | 2552 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,631 psi | 76% | 2644 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 39,291 psi | 62% | 2493 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 28,776 psi | 45% | 2343 fps | 97.8% |
| Somchem S385 | <<locked>> | 94% | 42,366 psi | 66% | 2592 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 48,863 psi | 77% | 2539 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,860 psi | 70% | 2533 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,281 psi | 71% | 2546 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,304 psi | 58% | 2428 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 33,446 psi | 52% | 2388 fps | 96% |
| Vihtavuori N530 | <<locked>> | 80% | 50,647 psi | 79% | 2654 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,758 psi | 69% | 2539 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 32,953 psi | 52% | 2392 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 86% | 30,124 psi | 47% | 2385 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,953 psi | 52% | 2365 fps | 98% |
| Winchester 748 | <<locked>> | 80% | 50,720 psi | 79% | 2703 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 38,856 psi | 61% | 2543 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,905 psi | 44% | 2392 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,528 psi | 73% | 2635 fps | 99.9% |
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 | Norma Soft Point ALASKA. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,927 fps; across all powders the maximum-charge window runs from 1,686 fps to 2,927 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 1:17.0 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.