Load Specifications
Bullet Manufacturer:Alaska Bullet Works
Bullet Weight:150 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 | 150gr | Alaska Bullet Works Kodiak SP PSPBC bullet and 103 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Power Pro 2000-MR 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>> | 86% | 54,302 psi | 85% | 2877 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 56,405 psi | 88% | 2953 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 55,956 psi | 88% | 2946 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 54,534 psi | 85% | 2963 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 55,999 psi | 88% | 2933 fps | 95.8% |
| Accurate 4064 | <<locked>> | 94% | 55,709 psi | 87% | 2989 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 51,401 psi | 81% | 2999 fps | 98.5% |
| Accurate LT-30 | <<locked>> | 82% | 56,710 psi | 89% | 2867 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 57,130 psi | 90% | 2894 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 56,898 psi | 89% | 3025 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 96% | 57,667 psi | 90% | 3015 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 88% | 55,825 psi | 87% | 2976 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 56,391 psi | 88% | 2956 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 53,925 psi | 85% | 3028 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 56,463 psi | 88% | 3140 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 57,406 psi | 90% | 3038 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 57,522 psi | 90% | 2933 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 54,665 psi | 86% | 3009 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,038 psi | 78% | 3002 fps | 98.5% |
| Alliant Reloder-17 | <<locked>> | 98% | 54,723 psi | 86% | 3107 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,607 psi | 56% | 2710 fps | 96.1% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 56,043 psi | 88% | 2861 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 56,797 psi | 89% | 3038 fps | 99.2% |
| Bofors RP3 | <<locked>> | 94% | 54,578 psi | 86% | 3005 fps | 99.9% |
| Bofors RP7 | <<locked>> | 98% | 55,013 psi | 86% | 2963 fps | 95.9% |
| Hodgdon Benchmark | <<locked>> | 86% | 54,491 psi | 85% | 2910 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 55,201 psi | 87% | 3005 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 57,116 psi | 90% | 3107 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 84% | 56,550 psi | 89% | 2976 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 54,099 psi | 85% | 2946 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 55,782 psi | 87% | 3012 fps | 98.7% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 54,665 psi | 86% | 3051 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 90% | 57,421 psi | 90% | 3035 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,209 psi | 72% | 2877 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 56,420 psi | 88% | 3064 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 56,144 psi | 88% | 3091 fps | 96.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,099 psi | 55% | 1824 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 55,230 psi | 87% | 2986 fps | 99.8% |
| IMR 3031 | <<locked>> | 90% | 56,927 psi | 89% | 3022 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 57,159 psi | 90% | 3002 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 90% | 54,157 psi | 85% | 2923 fps | 96.3% |
| IMR 4198 | <<locked>> | 84% | 57,276 psi | 90% | 2887 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 57,029 psi | 89% | 2999 fps | 96.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,762 psi | 76% | 2936 fps | 98.1% |
| IMR 4895 | <<locked>> | 92% | 56,043 psi | 88% | 3041 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 88% | 55,825 psi | 87% | 2976 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 56,115 psi | 88% | 2959 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 56,478 psi | 89% | 3002 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 56,681 psi | 89% | 2949 fps | 99.7% |
| Lovex S062 | <<locked>> | 94% | 56,956 psi | 89% | 3002 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 55,999 psi | 88% | 2989 fps | 98% |
| Lovex S070ᴾ | <<locked>> | 100% | 53,447 psi | 84% | 2966 fps | 96.5% |
| Norma 201 | <<locked>> | 90% | 55,608 psi | 87% | 2969 fps | 100% |
| Norma 202 | <<locked>> | 90% | 56,043 psi | 88% | 2972 fps | 100% |
| Norma 203B | <<locked>> | 94% | 57,246 psi | 90% | 3048 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 50,995 psi | 80% | 2992 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 92% | 54,331 psi | 85% | 3022 fps | 99.5% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 50,140 psi | 79% | 2979 fps | 96.6% |
| Ramshot TAC | <<locked>> | 88% | 56,550 psi | 89% | 2989 fps | 98.2% |
| Ramshot Wild Boar | <<locked>> | 88% | 55,941 psi | 88% | 3012 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 86% | 57,203 psi | 90% | 2979 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,491 psi | 56% | 1867 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 55,550 psi | 87% | 2959 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 56,362 psi | 88% | 2995 fps | 97.4% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 54,926 psi | 86% | 3077 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 54,563 psi | 86% | 3114 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 51,169 psi | 80% | 3022 fps | 98.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,779 psi | 81% | 3045 fps | 97.9% |
| Rottweil R 901 | <<locked>> | 88% | 56,405 psi | 88% | 2953 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 56,014 psi | 88% | 2966 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 54,099 psi | 85% | 2992 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 98% | 55,013 psi | 86% | 2963 fps | 95.9% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 55,999 psi | 88% | 2989 fps | 98% |
| Shooters World Match Rifle | <<locked>> | 90% | 56,478 psi | 89% | 3002 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 56,956 psi | 89% | 3002 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 53,447 psi | 84% | 2966 fps | 96.5% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 55,114 psi | 86% | 2927 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 56,115 psi | 88% | 3054 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 54,853 psi | 86% | 2907 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 54,708 psi | 86% | 2966 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 55,274 psi | 87% | 2992 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 57,508 psi | 90% | 2913 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 57,435 psi | 90% | 2907 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 56,840 psi | 89% | 2940 fps | 96.8% |
| Somchem S321 | <<locked>> | 86% | 57,276 psi | 90% | 3012 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 56,623 psi | 89% | 2907 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 54,259 psi | 85% | 2959 fps | 99.5% |
| Somchem S355 | <<locked>> | 96% | 54,737 psi | 86% | 2989 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,397 psi | 71% | 2933 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 86% | 57,014 psi | 89% | 2874 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 57,508 psi | 90% | 2897 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 55,245 psi | 87% | 2933 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 56,536 psi | 89% | 2949 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 56,478 psi | 89% | 2972 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 53,432 psi | 84% | 2986 fps | 98.6% |
| Vihtavuori N530 | <<locked>> | 88% | 56,478 psi | 89% | 2976 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 54,621 psi | 86% | 2943 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,663 psi | 83% | 2995 fps | 98.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,116 psi | 60% | 2792 fps | 96.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 54,418 psi | 85% | 2972 fps | 99.9% |
| Winchester 748 | <<locked>> | 88% | 56,202 psi | 88% | 3025 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 54,955 psi | 86% | 3054 fps | 96.7% |
| Winchester StaBALL Match | <<locked>> | 90% | 55,056 psi | 86% | 2999 fps | 99.8% |
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% | 45,165 psi | 71% | 2736 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,284 psi | 77% | 2848 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,594 psi | 59% | 2644 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,382 psi | 70% | 2795 fps | 99.9% |
| Accurate 2700 | <<locked>> | 90% | 52,373 psi | 82% | 2874 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 35,563 psi | 56% | 2628 fps | 99.4% |
| Accurate 4350 | <<locked>> | 92% | 38,899 psi | 61% | 2759 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 53,301 psi | 84% | 2818 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 53,708 psi | 84% | 2844 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 41,437 psi | 65% | 2746 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 82% | 37,623 psi | 59% | 2644 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,468 psi | 68% | 2759 fps | 99% |
| Alliant AR-Comp | <<locked>> | 80% | 43,105 psi | 68% | 2759 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,575 psi | 79% | 2972 fps | 99.5% |
| Alliant Power Pro 2000-MR | 52.5 gr | 80% | 37,434 psi | 59% | 2753 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,635 psi | 54% | 2608 fps | 96.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,691 psi | 79% | 2835 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,246 psi | 58% | 2671 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 92% | 39,131 psi | 61% | 2772 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 84% | 34,113 psi | 53% | 2674 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 98% | 33,518 psi | 53% | 2654 fps | 95.1% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 52,620 psi | 82% | 2815 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,553 psi | 64% | 2743 fps | 96.2% |
| Bofors RP3 | <<locked>> | 80% | 33,968 psi | 53% | 2605 fps | 96.5% |
| Bofors RP7 | <<locked>> | 96% | 51,706 psi | 81% | 2907 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,498 psi | 71% | 2759 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,945 psi | 66% | 2776 fps | 99.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,224 psi | 72% | 2920 fps | 98.2% |
| Hodgdon H322 | <<locked>> | 80% | 49,821 psi | 78% | 2874 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,618 psi | 79% | 2894 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 40,030 psi | 63% | 2723 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 96% | 47,935 psi | 75% | 2933 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 41,742 psi | 65% | 2759 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 33,736 psi | 53% | 2605 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,623 psi | 59% | 2720 fps | 97.6% |
| Hodgdon Superformance | <<locked>> | 98% | 52,417 psi | 82% | 3025 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,005 psi | 41% | 1627 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,277 psi | 63% | 2710 fps | 97.8% |
| IMR 3031 | <<locked>> | 80% | 41,162 psi | 65% | 2766 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,072 psi | 58% | 2625 fps | 95.9% |
| IMR 4166 Enduron | <<locked>> | 88% | 50,995 psi | 80% | 2867 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 50,981 psi | 80% | 2799 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 50,560 psi | 79% | 2890 fps | 95.4% |
| IMR 4831 | <<locked>> | 92% | 37,463 psi | 59% | 2710 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 38,101 psi | 60% | 2703 fps | 96.8% |
| IMR 8208 XBR | <<locked>> | 80% | 43,468 psi | 68% | 2759 fps | 99% |
| Lovex D073.5 | <<locked>> | 80% | 49,066 psi | 77% | 2851 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 40,190 psi | 63% | 2726 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 41,901 psi | 66% | 2690 fps | 97.7% |
| Lovex S062 | <<locked>> | 80% | 36,869 psi | 58% | 2631 fps | 97.7% |
| Lovex S065 | <<locked>> | 92% | 43,874 psi | 69% | 2776 fps | 95.4% |
| Lovex S070 | <<locked>> | 96% | 47,007 psi | 74% | 2854 fps | 95% |
| Norma 201 | <<locked>> | 80% | 40,567 psi | 64% | 2700 fps | 98.5% |
| Norma 202 | <<locked>> | 80% | 40,785 psi | 64% | 2713 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 36,666 psi | 57% | 2661 fps | 96.3% |
| Norma URP | <<locked>> | 92% | 39,247 psi | 62% | 2762 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 36,027 psi | 56% | 2664 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 98% | 46,905 psi | 74% | 2920 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 43,482 psi | 68% | 2756 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,728 psi | 67% | 2779 fps | 97.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,978 psi | 74% | 2808 fps | 98.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,237 psi | 41% | 1667 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,849 psi | 77% | 2854 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 46,224 psi | 72% | 2818 fps | 95.2% |
| ReloadSwiss RS 52 | 50.9 gr | 80% | 38,638 psi | 61% | 2769 fps | 96.2% |
| ReloadSwiss RS 60 | 51.7 gr | 80% | 31,807 psi | 50% | 2621 fps | 97.3% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 38,740 psi | 61% | 2776 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 42,105 psi | 66% | 2848 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 44,411 psi | 70% | 2753 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 38,595 psi | 60% | 2648 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 80% | 32,082 psi | 50% | 2549 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 96% | 51,706 psi | 81% | 2907 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 43,874 psi | 69% | 2776 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,190 psi | 63% | 2726 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 36,869 psi | 58% | 2631 fps | 97.7% |
| Shooters World SW4350 | <<locked>> | 96% | 47,007 psi | 74% | 2854 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 51,517 psi | 81% | 2867 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 35,375 psi | 55% | 2654 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 51,445 psi | 81% | 2858 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,539 psi | 65% | 2726 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,943 psi | 63% | 2710 fps | 97.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,047 psi | 66% | 2664 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,766 psi | 54% | 2520 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 49,719 psi | 78% | 2828 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 46,992 psi | 74% | 2844 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 41,611 psi | 65% | 2667 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,350 psi | 65% | 2730 fps | 97.5% |
| Somchem S355 | <<locked>> | 80% | 32,967 psi | 52% | 2556 fps | 95.5% |
| Somchem S365 | <<locked>> | 88% | 30,734 psi | 48% | 2589 fps | 96% |
| Vihtavuori N130 | <<locked>> | 80% | 47,572 psi | 75% | 2736 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,279 psi | 66% | 2664 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,782 psi | 59% | 2644 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,638 psi | 61% | 2648 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 31,401 psi | 49% | 2497 fps | 96.5% |
| Vihtavuori N160 | <<locked>> | 90% | 38,595 psi | 60% | 2710 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 43,366 psi | 68% | 2756 fps | 99% |
| Vihtavuori N540 | <<locked>> | 80% | 37,173 psi | 58% | 2631 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 92% | 40,335 psi | 63% | 2762 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 98% | 35,752 psi | 56% | 2733 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 34,084 psi | 53% | 2572 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 42,772 psi | 67% | 2799 fps | 99.5% |
| Winchester 760 | <<locked>> | 96% | 48,138 psi | 75% | 2936 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,305 psi | 62% | 2713 fps | 97.7% |
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 103 powders for .300 RCM loaded with the .308 | 150gr | Alaska Bullet Works Kodiak SP PSPBC. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,140 fps; across all powders the maximum-charge window runs from 1,824 fps to 3,140 fps. Accurate 4350 gives the best case fill at 100 %, and 103 of the 103 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 150.0 gr projectile in 0.308" calls for a 1:14.0 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. ReloadSwiss RS 60, Alliant Power Pro 2000-MR, ReloadSwiss RS 52 rank at the top here: for .300 RCM with the .308 | 150gr | Alaska Bullet Works Kodiak SP PSPBC 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.