Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 155gr | CutEdge MTAC bullet and 95 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Alliant Reloder-17.
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>> | 82% | 53,534 psi | 86% | 2858 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 55,695 psi | 89% | 2927 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,085 psi | 87% | 2946 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,085 psi | 88% | 2933 fps | 97% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,250 psi | 69% | 2815 fps | 96.2% |
| Accurate 4064 | <<locked>> | 90% | 55,970 psi | 90% | 2979 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 52,591 psi | 84% | 3012 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 84% | 52,953 psi | 85% | 2963 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 54,070 psi | 87% | 2963 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,332 psi | 89% | 2966 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 52,707 psi | 85% | 2887 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 52,794 psi | 85% | 3081 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 54,114 psi | 87% | 2986 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 54,752 psi | 88% | 3009 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 98% | 54,244 psi | 87% | 3081 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 94% | 55,317 psi | 89% | 3110 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,176 psi | 66% | 2848 fps | 99% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,499 psi | 75% | 3025 fps | 98.5% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 52,721 psi | 85% | 2972 fps | 99.5% |
| Bofors RP3 | <<locked>> | 90% | 54,636 psi | 88% | 2999 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 54,752 psi | 88% | 2969 fps | 97.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 53,432 psi | 86% | 2894 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 54,853 psi | 88% | 2992 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 55,680 psi | 89% | 3015 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 96% | 55,811 psi | 89% | 3071 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 94% | 56,304 psi | 90% | 3035 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 84% | 53,490 psi | 86% | 2972 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 54,114 psi | 87% | 3002 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 53,316 psi | 85% | 3009 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 52,634 psi | 84% | 3045 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,476 psi | 57% | 1850 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,824 psi | 88% | 2976 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 53,548 psi | 86% | 2956 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 53,621 psi | 86% | 2946 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 86% | 53,417 psi | 86% | 2923 fps | 97.5% |
| IMR 4350 | <<locked>> | 98% | 55,492 psi | 89% | 2999 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 53,417 psi | 86% | 2949 fps | 97.4% |
| IMR 4831 | <<locked>> | 98% | 53,476 psi | 86% | 3005 fps | 99.5% |
| IMR 4895 | <<locked>> | 88% | 56,173 psi | 90% | 3041 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 55,332 psi | 89% | 2966 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 56,362 psi | 90% | 2989 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 55,869 psi | 90% | 2943 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 53,330 psi | 86% | 2940 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 56,202 psi | 90% | 2999 fps | 99% |
| Lovex S070 | <<locked>> | 96% | 53,722 psi | 86% | 2979 fps | 97.8% |
| Norma 201 | <<locked>> | 86% | 54,984 psi | 88% | 2956 fps | 100% |
| Norma 202 | <<locked>> | 86% | 55,651 psi | 89% | 2959 fps | 100% |
| Norma 203B | <<locked>> | 88% | 53,998 psi | 87% | 2995 fps | 99.9% |
| Norma 204 | <<locked>> | 98% | 56,391 psi | 90% | 3051 fps | 96.3% |
| Norma URP | <<locked>> | 98% | 55,535 psi | 89% | 3058 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 88% | 54,737 psi | 88% | 3022 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 98% | 54,563 psi | 87% | 3054 fps | 98.5% |
| Ramshot TAC | <<locked>> | 84% | 55,767 psi | 89% | 2986 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 84% | 55,448 psi | 89% | 3002 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,028 psi | 90% | 2963 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,042 psi | 58% | 1896 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 56,057 psi | 90% | 2999 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 55,259 psi | 89% | 3074 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 55,143 psi | 88% | 3114 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 52,562 psi | 84% | 3035 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 55,985 psi | 90% | 3127 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 84% | 55,680 psi | 89% | 2936 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 55,550 psi | 89% | 2959 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 54,752 psi | 88% | 2992 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 54,752 psi | 88% | 2969 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 96% | 56,202 psi | 90% | 2999 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 86% | 56,362 psi | 90% | 2989 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 53,330 psi | 86% | 2940 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 53,722 psi | 86% | 2979 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 53,055 psi | 85% | 3002 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,186 psi | 87% | 2963 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 54,853 psi | 88% | 2982 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 56,376 psi | 90% | 2894 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 53,606 psi | 86% | 2848 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 52,924 psi | 85% | 2894 fps | 97.4% |
| Somchem S335 | <<locked>> | 86% | 55,854 psi | 90% | 2894 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 53,722 psi | 86% | 2949 fps | 99.9% |
| Somchem S355 | <<locked>> | 92% | 55,042 psi | 88% | 2992 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 53,664 psi | 86% | 3058 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 49,748 psi | 80% | 2933 fps | 96.2% |
| Vihtavuori N130 | <<locked>> | 82% | 56,028 psi | 90% | 2854 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 53,403 psi | 86% | 2835 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 55,608 psi | 89% | 2923 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 56,304 psi | 90% | 2936 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 53,069 psi | 85% | 2920 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,331 psi | 87% | 2999 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 84% | 55,767 psi | 89% | 2963 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 54,447 psi | 87% | 2933 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 53,461 psi | 86% | 3005 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 45,672 psi | 73% | 2933 fps | 99% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,621 psi | 88% | 2979 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 56,028 psi | 90% | 3015 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 56,072 psi | 90% | 3074 fps | 98.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,898 psi | 59% | 2851 fps | 99% |
| Winchester StaBALL Match | <<locked>> | 86% | 54,795 psi | 88% | 2992 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% | 50,299 psi | 81% | 2812 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 42,656 psi | 68% | 2723 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,357 psi | 81% | 2890 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 48,182 psi | 77% | 2815 fps | 95.5% |
| Accurate 3100 | <<locked>> | 98% | 40,248 psi | 65% | 2756 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 40,364 psi | 65% | 2720 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 34,345 psi | 55% | 2641 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 46,514 psi | 75% | 2848 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 80% | 39,552 psi | 63% | 2687 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,646 psi | 78% | 2854 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 49,371 psi | 79% | 2838 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,525 psi | 68% | 2877 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,233 psi | 63% | 2707 fps | 98.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,119 psi | 68% | 2776 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 84% | 34,606 psi | 55% | 2664 fps | 95.4% |
| Alliant Reloder-17 | 58.3 gr | 80% | 33,881 psi | 54% | 2671 fps | 97% |
| Alliant Reloder-23 | <<locked>> | 92% | 31,894 psi | 51% | 2615 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 94% | 37,434 psi | 60% | 2815 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,934 psi | 74% | 2851 fps | 98.6% |
| Bofors RP3 | <<locked>> | 80% | 38,870 psi | 62% | 2710 fps | 98.8% |
| Bofors RP7 | <<locked>> | 88% | 45,194 psi | 72% | 2799 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,357 psi | 81% | 2844 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,718 psi | 77% | 2877 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 39,682 psi | 64% | 2713 fps | 96.5% |
| Hodgdon H414 | <<locked>> | 90% | 45,513 psi | 73% | 2887 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 90% | 49,255 psi | 79% | 2910 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 46,949 psi | 75% | 2858 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 29,602 psi | 47% | 2493 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,236 psi | 69% | 2828 fps | 99.5% |
| Hodgdon Superformance | 69.4 gr | 90% | 45,426 psi | 73% | 2907 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,324 psi | 42% | 1654 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,049 psi | 72% | 2805 fps | 99.4% |
| IMR 3031 | <<locked>> | 80% | 46,818 psi | 75% | 2851 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,524 psi | 67% | 2723 fps | 98.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,077 psi | 71% | 2749 fps | 95.3% |
| IMR 4350 | <<locked>> | 92% | 45,745 psi | 73% | 2828 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 44,324 psi | 71% | 2779 fps | 95.2% |
| IMR 4831 | <<locked>> | 86% | 35,708 psi | 57% | 2661 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 43,163 psi | 69% | 2808 fps | 98.9% |
| IMR 8208 XBR | <<locked>> | 80% | 48,646 psi | 78% | 2854 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 45,832 psi | 73% | 2822 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,340 psi | 74% | 2782 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 41,350 psi | 66% | 2726 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 38,479 psi | 62% | 2661 fps | 95.1% |
| Lovex S070 | <<locked>> | 90% | 44,396 psi | 71% | 2808 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 45,353 psi | 73% | 2795 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 45,890 psi | 74% | 2802 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,481 psi | 67% | 2762 fps | 98.6% |
| Norma 204 | <<locked>> | 96% | 52,417 psi | 84% | 2989 fps | 95.4% |
| Norma URP | <<locked>> | 84% | 34,795 psi | 56% | 2651 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 41,263 psi | 66% | 2779 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 90% | 41,481 psi | 67% | 2808 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 48,762 psi | 78% | 2864 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,327 psi | 77% | 2884 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 52,649 psi | 84% | 2910 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,731 psi | 43% | 1696 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,946 psi | 69% | 2759 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,744 psi | 72% | 2887 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,100 psi | 58% | 2743 fps | 99.6% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 36,709 psi | 59% | 2720 fps | 95.7% |
| ReloadSwiss RS 70 | 65.2 gr | 88% | 39,392 psi | 63% | 2799 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 49,153 psi | 79% | 2835 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,120 psi | 69% | 2743 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 36,521 psi | 59% | 2651 fps | 98% |
| Rottweil R 907 | <<locked>> | 88% | 45,194 psi | 72% | 2799 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 84% | 38,479 psi | 62% | 2661 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,832 psi | 73% | 2822 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,350 psi | 66% | 2726 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 90% | 44,396 psi | 71% | 2808 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,695 psi | 60% | 2703 fps | 97.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,036 psi | 75% | 2838 fps | 98.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,020 psi | 72% | 2812 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,775 psi | 75% | 2746 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,015 psi | 63% | 2605 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 43,323 psi | 69% | 2720 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 46,325 psi | 74% | 2746 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,717 psi | 75% | 2831 fps | 99.3% |
| Somchem S355 | <<locked>> | 80% | 37,333 psi | 60% | 2657 fps | 98% |
| Somchem S365 | <<locked>> | 80% | 27,035 psi | 43% | 2470 fps | 95.4% |
| Somchem S385 | <<locked>> | 98% | 46,456 psi | 74% | 2874 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 52,765 psi | 85% | 2808 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,224 psi | 76% | 2740 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,917 psi | 69% | 2726 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,482 psi | 70% | 2733 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,549 psi | 57% | 2592 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 84% | 36,332 psi | 58% | 2654 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 48,805 psi | 78% | 2851 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 41,858 psi | 67% | 2720 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 35,810 psi | 57% | 2651 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 90% | 32,271 psi | 52% | 2631 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,430 psi | 50% | 2510 fps | 96.2% |
| Winchester 748 | <<locked>> | 80% | 48,834 psi | 78% | 2900 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 45,687 psi | 73% | 2890 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 94% | 30,139 psi | 48% | 2638 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,614 psi | 72% | 2815 fps | 99.4% |
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 95 powders for .300 H&H Mag. loaded with the .308 | 155gr | CutEdge MTAC. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,127 fps; across all powders the maximum-charge window runs from 1,850 fps to 3,127 fps. Accurate 3100 gives the best case fill at 100 %, and 95 of the 95 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 57–90 %, 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 3100, Alliant Reloder-23, Alliant Reloder-26 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 70, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 H&H Mag. with the .308 | 155gr | CutEdge MTAC 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.