Load Specifications
Bullet:.308 | 155gr | Lapua ScenarL
Bullet Manufacturer:Lapua
Bullet Weight:155 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:1:12.0
Load data in caliber .300 RCM with .308 | 155gr | Lapua ScenarL bullet and 104 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.
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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>> | 88% | 57,174 psi | 90% | 2861 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 55,724 psi | 87% | 2887 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 55,259 psi | 87% | 2881 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 53,940 psi | 85% | 2897 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 55,477 psi | 87% | 2867 fps | 95.8% |
| Accurate 4064 | <<locked>> | 94% | 55,172 psi | 86% | 2927 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,937 psi | 80% | 2936 fps | 98.5% |
| Accurate LT-30 | <<locked>> | 82% | 56,173 psi | 88% | 2802 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 56,579 psi | 89% | 2828 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 56,289 psi | 88% | 2956 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 96% | 57,232 psi | 90% | 2953 fps | 99.5% |
| ADI AR 2219 | <<locked>> | 82% | 57,464 psi | 90% | 2930 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 55,434 psi | 87% | 2913 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 55,753 psi | 87% | 2890 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 57,159 psi | 90% | 3022 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 55,985 psi | 88% | 3074 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 56,753 psi | 89% | 2972 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 56,913 psi | 89% | 2867 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 57,725 psi | 90% | 2999 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,617 psi | 78% | 2940 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 98% | 53,911 psi | 84% | 3041 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,288 psi | 55% | 2654 fps | 96.2% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,695 psi | 87% | 2802 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 56,202 psi | 88% | 2972 fps | 99.2% |
| Bofors RP3 | <<locked>> | 96% | 57,566 psi | 90% | 2992 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 54,491 psi | 85% | 2897 fps | 95.9% |
| Hodgdon Benchmark | <<locked>> | 88% | 57,406 psi | 90% | 2897 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 54,505 psi | 85% | 2940 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 56,420 psi | 88% | 3038 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 84% | 56,202 psi | 88% | 2910 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 57,479 psi | 90% | 2940 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 55,201 psi | 87% | 2949 fps | 98.7% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 54,114 psi | 85% | 2986 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 90% | 56,826 psi | 89% | 2969 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,672 psi | 72% | 2815 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 55,796 psi | 87% | 2999 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 55,492 psi | 87% | 3022 fps | 96.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,085 psi | 55% | 1778 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 54,650 psi | 86% | 2920 fps | 99.8% |
| IMR 3031 | <<locked>> | 90% | 56,420 psi | 88% | 2953 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 56,637 psi | 89% | 2936 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 92% | 57,188 psi | 90% | 2913 fps | 97% |
| IMR 4198 | <<locked>> | 84% | 57,087 psi | 89% | 2828 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 56,565 psi | 89% | 2936 fps | 96.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,370 psi | 76% | 2874 fps | 98.2% |
| IMR 4895 | <<locked>> | 92% | 55,550 psi | 87% | 2979 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 88% | 55,434 psi | 87% | 2913 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 55,811 psi | 87% | 2900 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 55,680 psi | 87% | 2933 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 56,043 psi | 88% | 2884 fps | 99.7% |
| Lovex S062 | <<locked>> | 94% | 56,449 psi | 88% | 2936 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 55,506 psi | 87% | 2927 fps | 98% |
| Lovex S070ᴾ | <<locked>> | 100% | 52,736 psi | 83% | 2900 fps | 96.5% |
| Norma 201 | <<locked>> | 90% | 54,926 psi | 86% | 2900 fps | 100% |
| Norma 202 | <<locked>> | 90% | 55,405 psi | 87% | 2907 fps | 100% |
| Norma 203B | <<locked>> | 94% | 56,869 psi | 89% | 2986 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 50,241 psi | 79% | 2923 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 94% | 57,363 psi | 90% | 3012 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,414 psi | 77% | 2913 fps | 96.5% |
| Ramshot TAC | <<locked>> | 88% | 55,941 psi | 88% | 2927 fps | 98.2% |
| Ramshot Wild Boar | <<locked>> | 88% | 55,259 psi | 87% | 2946 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 86% | 56,768 psi | 89% | 2917 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,491 psi | 56% | 1821 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 55,027 psi | 86% | 2894 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 55,579 psi | 87% | 2927 fps | 97.4% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 54,418 psi | 85% | 3015 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 57,551 psi | 90% | 3100 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,430 psi | 79% | 2956 fps | 98.2% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,966 psi | 80% | 2976 fps | 97.8% |
| Rottweil R 901 | <<locked>> | 88% | 56,072 psi | 88% | 2890 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 55,361 psi | 87% | 2900 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 57,130 psi | 90% | 2979 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 54,491 psi | 85% | 2897 fps | 95.9% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 55,506 psi | 87% | 2927 fps | 98% |
| Shooters World Match Rifle | <<locked>> | 90% | 55,680 psi | 87% | 2933 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 56,449 psi | 88% | 2936 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 52,736 psi | 83% | 2900 fps | 96.5% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 54,694 psi | 86% | 2864 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 55,361 psi | 87% | 2989 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 54,505 psi | 85% | 2844 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 54,099 psi | 85% | 2900 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 54,824 psi | 86% | 2930 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 56,956 psi | 89% | 2848 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 56,898 psi | 89% | 2841 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 56,231 psi | 88% | 2877 fps | 96.8% |
| Somchem S321 | <<locked>> | 86% | 56,840 psi | 89% | 2949 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 55,941 psi | 88% | 2841 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 57,479 psi | 90% | 2949 fps | 99.8% |
| Somchem S355 | <<locked>> | 98% | 57,638 psi | 90% | 2976 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,788 psi | 70% | 2871 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 86% | 56,565 psi | 89% | 2812 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 56,971 psi | 89% | 2831 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 54,737 psi | 86% | 2867 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 55,999 psi | 88% | 2884 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,637 psi | 87% | 2907 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 53,040 psi | 83% | 2927 fps | 98.7% |
| Vihtavuori N530 | <<locked>> | 88% | 56,130 psi | 88% | 2913 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 57,725 psi | 90% | 2930 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,069 psi | 82% | 2930 fps | 98.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,681 psi | 59% | 2733 fps | 96.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,911 psi | 84% | 2910 fps | 99.9% |
| Winchester 748 | <<locked>> | 88% | 55,724 psi | 87% | 2959 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 54,418 psi | 85% | 2992 fps | 96.7% |
| Winchester StaBALL Match | <<locked>> | 90% | 54,433 psi | 85% | 2936 fps | 99.8% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 44,788 psi | 70% | 2677 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,733 psi | 76% | 2782 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,318 psi | 58% | 2589 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,845 psi | 69% | 2736 fps | 99.9% |
| Accurate 2700 | <<locked>> | 90% | 51,793 psi | 81% | 2812 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 35,230 psi | 55% | 2572 fps | 99.5% |
| Accurate 4350 | <<locked>> | 92% | 38,464 psi | 60% | 2700 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 52,982 psi | 83% | 2756 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 53,388 psi | 84% | 2782 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 41,017 psi | 64% | 2684 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 80% | 35,099 psi | 55% | 2533 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 53,853 psi | 84% | 2877 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,018 psi | 67% | 2700 fps | 99% |
| Alliant AR-Comp | <<locked>> | 80% | 42,743 psi | 67% | 2700 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,053 psi | 78% | 2907 fps | 99.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 37,246 psi | 58% | 2697 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,360 psi | 54% | 2552 fps | 96.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,517 psi | 79% | 2776 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,869 psi | 58% | 2612 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 92% | 38,885 psi | 61% | 2717 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 84% | 33,852 psi | 53% | 2618 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 98% | 33,141 psi | 52% | 2598 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 52,272 psi | 82% | 2753 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,176 psi | 63% | 2684 fps | 96.3% |
| Bofors RP3 | <<locked>> | 80% | 33,794 psi | 53% | 2552 fps | 96.6% |
| Bofors RP7 | <<locked>> | 96% | 51,126 psi | 80% | 2844 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,991 psi | 71% | 2697 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,713 psi | 65% | 2720 fps | 99.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,556 psi | 71% | 2854 fps | 98.2% |
| Hodgdon H322 | <<locked>> | 80% | 49,298 psi | 77% | 2808 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,125 psi | 79% | 2831 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 39,653 psi | 62% | 2664 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 96% | 47,514 psi | 74% | 2874 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 41,336 psi | 65% | 2697 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 33,446 psi | 52% | 2552 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,362 psi | 59% | 2664 fps | 97.7% |
| Hodgdon Superformance | <<locked>> | 98% | 51,677 psi | 81% | 2959 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,121 psi | 41% | 1591 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,842 psi | 62% | 2651 fps | 97.8% |
| IMR 3031 | <<locked>> | 80% | 40,596 psi | 64% | 2703 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,811 psi | 58% | 2569 fps | 95.9% |
| IMR 4166 Enduron | <<locked>> | 88% | 50,459 psi | 79% | 2805 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 50,633 psi | 79% | 2736 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 49,937 psi | 78% | 2825 fps | 95.4% |
| IMR 4831 | <<locked>> | 92% | 37,028 psi | 58% | 2651 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 37,695 psi | 59% | 2644 fps | 96.9% |
| IMR 8208 XBR | <<locked>> | 80% | 43,018 psi | 67% | 2700 fps | 99% |
| Lovex D073.5 | <<locked>> | 80% | 48,559 psi | 76% | 2789 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 39,856 psi | 62% | 2671 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 41,626 psi | 65% | 2631 fps | 97.8% |
| Lovex S062 | <<locked>> | 80% | 36,608 psi | 57% | 2575 fps | 97.8% |
| Lovex S065 | <<locked>> | 92% | 43,366 psi | 68% | 2713 fps | 95.4% |
| Lovex S070 | <<locked>> | 96% | 46,702 psi | 73% | 2795 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 40,306 psi | 63% | 2644 fps | 98.6% |
| Norma 202 | <<locked>> | 80% | 40,509 psi | 63% | 2657 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 36,245 psi | 57% | 2602 fps | 96.3% |
| Norma URP | <<locked>> | 92% | 38,812 psi | 61% | 2703 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 35,824 psi | 56% | 2612 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 98% | 46,369 psi | 73% | 2858 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 43,105 psi | 68% | 2697 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,337 psi | 66% | 2720 fps | 97.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,775 psi | 73% | 2753 fps | 98.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,353 psi | 41% | 1627 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,457 psi | 76% | 2792 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 45,803 psi | 72% | 2759 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,276 psi | 60% | 2710 fps | 96.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 31,575 psi | 49% | 2569 fps | 97.4% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 38,290 psi | 60% | 2717 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,582 psi | 65% | 2785 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 44,251 psi | 69% | 2697 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,305 psi | 60% | 2592 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 80% | 31,676 psi | 50% | 2490 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 96% | 51,126 psi | 80% | 2844 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 92% | 43,366 psi | 68% | 2713 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,856 psi | 62% | 2671 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 36,608 psi | 57% | 2575 fps | 97.8% |
| Shooters World SW4350 | <<locked>> | 96% | 46,702 psi | 73% | 2795 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 51,285 psi | 80% | 2808 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,954 psi | 55% | 2595 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 51,271 psi | 80% | 2795 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,104 psi | 64% | 2667 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,653 psi | 62% | 2654 fps | 97.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,930 psi | 66% | 2608 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,650 psi | 54% | 2470 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 49,168 psi | 77% | 2769 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 46,543 psi | 73% | 2785 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 41,350 psi | 65% | 2608 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,944 psi | 64% | 2671 fps | 97.5% |
| Somchem S355 | <<locked>> | 80% | 32,750 psi | 51% | 2503 fps | 95.6% |
| Somchem S365 | <<locked>> | 86% | 28,543 psi | 45% | 2474 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 47,427 psi | 74% | 2680 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,134 psi | 66% | 2608 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,565 psi | 59% | 2589 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,218 psi | 60% | 2589 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 31,009 psi | 49% | 2441 fps | 96.6% |
| Vihtavuori N160 | <<locked>> | 90% | 38,159 psi | 60% | 2651 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 43,207 psi | 68% | 2700 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 80% | 36,854 psi | 58% | 2575 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 92% | 40,030 psi | 63% | 2707 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 98% | 35,288 psi | 55% | 2674 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 33,779 psi | 53% | 2520 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 42,482 psi | 67% | 2743 fps | 99.5% |
| Winchester 760 | <<locked>> | 96% | 47,514 psi | 74% | 2874 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,841 psi | 61% | 2654 fps | 97.7% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 104 powders for .300 RCM loaded with the .308 | 155gr | Lapua ScenarL. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,100 fps; across all powders the maximum-charge window runs from 1,778 fps to 3,100 fps. Accurate 4350 gives the best case fill at 100 %, and 104 of the 104 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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.