Load Specifications
Bullet:.308 | 155gr | Brenneke TAG
Bullet Manufacturer:Brenneke
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:1:12.5
Load data in caliber .300 RCM with .308 | 155gr | Brenneke TAG 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>> | 88% | 57,290 psi | 90% | 2877 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 55,579 psi | 87% | 2900 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 54,795 psi | 86% | 2890 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 57,740 psi | 90% | 2969 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 55,550 psi | 87% | 2890 fps | 96.1% |
| Accurate 4064 | <<locked>> | 94% | 54,708 psi | 86% | 2936 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 51,169 psi | 80% | 2956 fps | 98.7% |
| Accurate LT-30 | <<locked>> | 82% | 56,391 psi | 88% | 2822 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 56,855 psi | 89% | 2848 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 56,333 psi | 88% | 2976 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 96% | 57,580 psi | 90% | 2976 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 88% | 55,579 psi | 87% | 2930 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 56,086 psi | 88% | 2907 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 57,493 psi | 90% | 3045 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 56,217 psi | 88% | 3097 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 57,276 psi | 90% | 2999 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 56,985 psi | 89% | 2884 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 54,418 psi | 85% | 2966 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,980 psi | 78% | 2966 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 98% | 54,520 psi | 85% | 3064 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,012 psi | 55% | 2667 fps | 96.3% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,883 psi | 88% | 2818 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 56,449 psi | 88% | 2992 fps | 99.4% |
| Bofors RP3 | <<locked>> | 96% | 57,609 psi | 90% | 3009 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 54,549 psi | 85% | 2917 fps | 96.2% |
| Hodgdon Benchmark | <<locked>> | 88% | 57,595 psi | 90% | 2917 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 54,679 psi | 86% | 2959 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 56,855 psi | 89% | 3061 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 84% | 56,289 psi | 88% | 2927 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 57,624 psi | 90% | 2956 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 55,259 psi | 87% | 2966 fps | 98.8% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 54,433 psi | 85% | 3009 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 90% | 56,913 psi | 89% | 2989 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,992 psi | 72% | 2838 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 56,376 psi | 88% | 3022 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 56,043 psi | 88% | 3051 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,954 psi | 55% | 1791 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 55,056 psi | 86% | 2943 fps | 99.9% |
| IMR 3031 | <<locked>> | 90% | 56,695 psi | 89% | 2972 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 56,971 psi | 89% | 2956 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 92% | 57,435 psi | 90% | 2936 fps | 97.3% |
| IMR 4198 | <<locked>> | 84% | 57,246 psi | 90% | 2844 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 56,753 psi | 89% | 2956 fps | 97.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,588 psi | 76% | 2894 fps | 98.4% |
| IMR 4895 | <<locked>> | 92% | 55,825 psi | 87% | 2999 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 88% | 55,579 psi | 87% | 2930 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 55,622 psi | 87% | 2913 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 55,854 psi | 88% | 2953 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 56,507 psi | 89% | 2907 fps | 99.8% |
| Lovex S062 | <<locked>> | 94% | 56,347 psi | 88% | 2949 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 55,506 psi | 87% | 2943 fps | 98.2% |
| Lovex S070ᴾ | <<locked>> | 100% | 52,924 psi | 83% | 2923 fps | 96.8% |
| Norma 201 | <<locked>> | 90% | 55,114 psi | 86% | 2923 fps | 100% |
| Norma 202 | <<locked>> | 90% | 55,448 psi | 87% | 2923 fps | 100% |
| Norma 203B | <<locked>> | 94% | 57,087 psi | 89% | 3005 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 50,618 psi | 79% | 2946 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 92% | 53,983 psi | 85% | 2976 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,574 psi | 78% | 2933 fps | 96.8% |
| Ramshot TAC | <<locked>> | 88% | 56,130 psi | 88% | 2946 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 88% | 55,535 psi | 87% | 2966 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 86% | 56,724 psi | 89% | 2930 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,288 psi | 55% | 1834 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 55,230 psi | 87% | 2913 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 55,927 psi | 88% | 2949 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 54,505 psi | 85% | 3028 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 54,317 psi | 85% | 3071 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,850 psi | 80% | 2976 fps | 98.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,271 psi | 80% | 2999 fps | 98.1% |
| Rottweil R 901 | <<locked>> | 88% | 55,637 psi | 87% | 2900 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 55,535 psi | 87% | 2920 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 57,450 psi | 90% | 2999 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 54,549 psi | 85% | 2917 fps | 96.2% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 55,506 psi | 87% | 2943 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 90% | 55,854 psi | 88% | 2953 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 56,347 psi | 88% | 2949 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 52,924 psi | 83% | 2923 fps | 96.8% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 54,824 psi | 86% | 2881 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 55,840 psi | 88% | 3012 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 54,476 psi | 85% | 2858 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 54,157 psi | 85% | 2920 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 54,853 psi | 86% | 2946 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 57,174 psi | 90% | 2867 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 56,956 psi | 89% | 2858 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 56,463 psi | 88% | 2900 fps | 97.1% |
| Somchem S321 | <<locked>> | 86% | 57,043 psi | 89% | 2966 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 56,231 psi | 88% | 2861 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 57,638 psi | 90% | 2969 fps | 99.8% |
| Somchem S355 | <<locked>> | 98% | 57,740 psi | 90% | 2995 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,947 psi | 70% | 2890 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 86% | 56,608 psi | 89% | 2828 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 57,290 psi | 90% | 2851 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 54,868 psi | 86% | 2884 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 56,362 psi | 88% | 2904 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 56,014 psi | 88% | 2927 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 53,432 psi | 84% | 2949 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 88% | 56,231 psi | 88% | 2930 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 54,389 psi | 85% | 2900 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,315 psi | 82% | 2949 fps | 98.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,681 psi | 59% | 2749 fps | 96.4% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 54,244 psi | 85% | 2930 fps | 99.9% |
| Winchester 748 | <<locked>> | 88% | 55,796 psi | 87% | 2979 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 54,723 psi | 86% | 3012 fps | 97% |
| Winchester StaBALL Match | <<locked>> | 90% | 54,665 psi | 86% | 2953 fps | 99.9% |
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% | 44,425 psi | 70% | 2687 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,631 psi | 76% | 2799 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,651 psi | 57% | 2592 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,743 psi | 69% | 2749 fps | 99.9% |
| Accurate 2700 | <<locked>> | 90% | 51,880 psi | 81% | 2831 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 34,693 psi | 54% | 2575 fps | 99.5% |
| Accurate 4350 | <<locked>> | 92% | 38,334 psi | 60% | 2717 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 52,953 psi | 83% | 2772 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 53,359 psi | 84% | 2799 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,857 psi | 64% | 2700 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 80% | 34,809 psi | 55% | 2543 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,989 psi | 67% | 2713 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 80% | 42,598 psi | 67% | 2713 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,140 psi | 79% | 2927 fps | 99.6% |
| Alliant Power Pro 2000-MR | 52 gr | 80% | 36,999 psi | 58% | 2710 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,982 psi | 53% | 2562 fps | 96.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,343 psi | 79% | 2789 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,651 psi | 57% | 2625 fps | 96% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,405 psi | 57% | 2671 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 84% | 33,649 psi | 53% | 2631 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 98% | 32,895 psi | 52% | 2608 fps | 95.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 52,417 psi | 82% | 2769 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,190 psi | 63% | 2700 fps | 96.5% |
| Bofors RP3 | <<locked>> | 80% | 33,402 psi | 52% | 2559 fps | 96.7% |
| Bofors RP7 | <<locked>> | 96% | 51,155 psi | 80% | 2861 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,034 psi | 71% | 2713 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,408 psi | 65% | 2730 fps | 99.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,716 psi | 72% | 2874 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 80% | 49,400 psi | 77% | 2825 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,256 psi | 79% | 2848 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 39,508 psi | 62% | 2677 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 96% | 47,500 psi | 74% | 2890 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 41,220 psi | 65% | 2710 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 33,286 psi | 52% | 2566 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,173 psi | 58% | 2674 fps | 97.8% |
| Hodgdon Superformance | <<locked>> | 98% | 51,967 psi | 81% | 2982 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,947 psi | 41% | 1601 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,827 psi | 62% | 2667 fps | 98% |
| IMR 3031 | <<locked>> | 80% | 40,640 psi | 64% | 2717 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,506 psi | 57% | 2579 fps | 96.1% |
| IMR 4166 Enduron | <<locked>> | 86% | 47,427 psi | 74% | 2769 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 50,836 psi | 80% | 2753 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 92% | 47,137 psi | 74% | 2792 fps | 95% |
| IMR 4831 | <<locked>> | 92% | 37,014 psi | 58% | 2667 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 37,536 psi | 59% | 2657 fps | 97% |
| IMR 8208 XBR | <<locked>> | 80% | 42,989 psi | 67% | 2713 fps | 99.1% |
| Lovex D073.5 | <<locked>> | 80% | 48,414 psi | 76% | 2802 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 39,508 psi | 62% | 2677 fps | 99.6% |
| Lovex S060 | <<locked>> | 80% | 41,394 psi | 65% | 2644 fps | 97.9% |
| Lovex S062 | <<locked>> | 80% | 36,143 psi | 57% | 2582 fps | 97.8% |
| Lovex S065 | <<locked>> | 92% | 43,163 psi | 68% | 2726 fps | 95.6% |
| Lovex S070 | <<locked>> | 96% | 46,630 psi | 73% | 2812 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 40,016 psi | 63% | 2654 fps | 98.7% |
| Norma 202 | <<locked>> | 80% | 40,190 psi | 63% | 2667 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 36,013 psi | 56% | 2612 fps | 96.5% |
| Norma URP | <<locked>> | 92% | 38,870 psi | 61% | 2720 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 35,563 psi | 56% | 2621 fps | 96% |
| Ramshot Hunter | <<locked>> | 96% | 43,439 psi | 68% | 2815 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 43,120 psi | 68% | 2717 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,337 psi | 66% | 2736 fps | 98.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,557 psi | 73% | 2766 fps | 98.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,136 psi | 41% | 1637 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,428 psi | 76% | 2805 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 45,919 psi | 72% | 2779 fps | 95.5% |
| ReloadSwiss RS 52 | 50.4 gr | 80% | 38,159 psi | 60% | 2723 fps | 96.5% |
| ReloadSwiss RS 60 | 51.2 gr | 80% | 31,256 psi | 49% | 2579 fps | 97.5% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 38,348 psi | 60% | 2733 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,640 psi | 65% | 2805 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 43,671 psi | 68% | 2707 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,014 psi | 60% | 2605 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 80% | 31,299 psi | 49% | 2500 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 96% | 51,155 psi | 80% | 2861 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 92% | 43,163 psi | 68% | 2726 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,508 psi | 62% | 2677 fps | 99.6% |
| Shooters World Precision | <<locked>> | 80% | 36,143 psi | 57% | 2582 fps | 97.8% |
| Shooters World SW4350 | <<locked>> | 96% | 46,630 psi | 73% | 2812 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 51,169 psi | 80% | 2825 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,867 psi | 55% | 2612 fps | 95.9% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 51,285 psi | 80% | 2815 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,988 psi | 64% | 2680 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,465 psi | 62% | 2667 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,669 psi | 65% | 2621 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,360 psi | 54% | 2480 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 49,168 psi | 77% | 2785 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 46,557 psi | 73% | 2802 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 41,162 psi | 65% | 2621 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,915 psi | 64% | 2687 fps | 97.7% |
| Somchem S355 | <<locked>> | 80% | 32,445 psi | 51% | 2513 fps | 95.7% |
| Somchem S365 | <<locked>> | 86% | 28,268 psi | 44% | 2484 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 47,239 psi | 74% | 2694 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,959 psi | 66% | 2621 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,275 psi | 58% | 2598 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,087 psi | 60% | 2605 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 30,748 psi | 48% | 2451 fps | 96.6% |
| Vihtavuori N160 | <<locked>> | 90% | 38,014 psi | 60% | 2664 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 43,120 psi | 68% | 2713 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 80% | 36,637 psi | 57% | 2589 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 90% | 37,275 psi | 58% | 2664 fps | 95% |
| Vihtavuori N555 | <<locked>> | 98% | 35,244 psi | 55% | 2690 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 31,517 psi | 49% | 2477 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 42,337 psi | 66% | 2753 fps | 99.5% |
| Winchester 760 | <<locked>> | 96% | 47,776 psi | 75% | 2894 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,827 psi | 61% | 2671 fps | 97.8% |
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 103 powders for .300 RCM loaded with the .308 | 155gr | Brenneke TAG. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,097 fps; across all powders the maximum-charge window runs from 1,791 fps to 3,097 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 155.0 gr projectile in 0.308" calls for a 1:12.5 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 | 155gr | Brenneke TAG 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.