Load Specifications
Bullet Manufacturer:MRR
Bullet Weight:176 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.300 H&H Mag. load data
Case Length (l3):2.85"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:85.9 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:10.5
Load data in caliber .300 H&H Mag. with .308 | 176gr | MRR Green Long Range bullet and 102 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 70 and Alliant Reloder-16.
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% | 56,173 psi | 90% | 2703 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 54,955 psi | 88% | 2726 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 54,157 psi | 87% | 2746 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,253 psi | 74% | 2710 fps | 98.1% |
| Accurate 4064 | <<locked>> | 88% | 55,288 psi | 89% | 2779 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,970 psi | 90% | 2881 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 55,579 psi | 89% | 2818 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 53,243 psi | 85% | 2769 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,969 psi | 87% | 2864 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,244 psi | 87% | 2762 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,811 psi | 89% | 2733 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,680 psi | 89% | 2943 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 53,838 psi | 86% | 2861 fps | 97.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 53,621 psi | 86% | 2792 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 53,896 psi | 86% | 2812 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 53,374 psi | 86% | 2884 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,592 psi | 88% | 2913 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,040 psi | 85% | 2851 fps | 97.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,627 psi | 70% | 2733 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,305 psi | 61% | 2635 fps | 96.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,545 psi | 79% | 2910 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,434 psi | 89% | 2835 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 53,882 psi | 86% | 2802 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 53,824 psi | 86% | 2779 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,738 psi | 89% | 2743 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 53,954 psi | 87% | 2792 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,839 psi | 88% | 2822 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 94% | 54,984 psi | 88% | 2881 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 92% | 55,288 psi | 89% | 2841 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 84% | 56,173 psi | 90% | 2825 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 53,447 psi | 86% | 2812 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,985 psi | 90% | 2861 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,550 psi | 89% | 2920 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,766 psi | 57% | 1726 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 53,867 psi | 86% | 2776 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 52,895 psi | 85% | 2753 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,101 psi | 90% | 2802 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,593 psi | 89% | 2782 fps | 98.7% |
| IMR 4350 | <<locked>> | 96% | 54,679 psi | 88% | 2815 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,753 psi | 89% | 2815 fps | 98.7% |
| IMR 4831 | <<locked>> | 98% | 56,434 psi | 90% | 2871 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 55,303 psi | 89% | 2838 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 54,244 psi | 87% | 2762 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,593 psi | 89% | 2789 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,592 psi | 88% | 2740 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,898 psi | 90% | 2792 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,245 psi | 89% | 2805 fps | 99.5% |
| Lovex S070 | <<locked>> | 96% | 56,434 psi | 90% | 2844 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,174 psi | 61% | 2556 fps | 96% |
| Norma 201 | <<locked>> | 84% | 53,882 psi | 86% | 2756 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,636 psi | 88% | 2756 fps | 100% |
| Norma 203B | <<locked>> | 86% | 53,156 psi | 85% | 2799 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,347 psi | 89% | 2864 fps | 97.2% |
| Norma MRPᴾ | <<locked>> | 100% | 49,008 psi | 79% | 2864 fps | 97.8% |
| Norma URP | <<locked>> | 96% | 54,882 psi | 88% | 2867 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 53,795 psi | 86% | 2822 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 53,766 psi | 86% | 2867 fps | 99.2% |
| Ramshot TAC | <<locked>> | 82% | 54,447 psi | 87% | 2785 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,433 psi | 87% | 2802 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,448 psi | 58% | 1768 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,100 psi | 88% | 2805 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,665 psi | 88% | 2877 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,215 psi | 87% | 2910 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,709 psi | 89% | 2904 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,056 psi | 88% | 2936 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 54,708 psi | 88% | 2733 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,534 psi | 87% | 2756 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 54,012 psi | 87% | 2799 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 55,724 psi | 89% | 2835 fps | 96.3% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,011 psi | 83% | 2838 fps | 97% |
| Rottweil R 907 | <<locked>> | 92% | 53,824 psi | 86% | 2779 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,245 psi | 89% | 2805 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,593 psi | 89% | 2789 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,898 psi | 90% | 2792 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,434 psi | 90% | 2844 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,970 psi | 90% | 2861 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 52,968 psi | 85% | 2762 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 53,969 psi | 87% | 2789 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,245 psi | 89% | 2694 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,999 psi | 90% | 2697 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,361 psi | 89% | 2762 fps | 98.7% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,532 psi | 83% | 2831 fps | 96.9% |
| Somchem S335 | <<locked>> | 84% | 54,679 psi | 88% | 2690 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 52,808 psi | 85% | 2756 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,114 psi | 87% | 2792 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 53,490 psi | 86% | 2867 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,620 psi | 84% | 2812 fps | 97.9% |
| Vihtavuori N133 | <<locked>> | 84% | 55,738 psi | 89% | 2677 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,795 psi | 88% | 2720 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,477 psi | 89% | 2740 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,680 psi | 89% | 2772 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 53,751 psi | 86% | 2812 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 82% | 54,665 psi | 88% | 2762 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 53,461 psi | 86% | 2733 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,347 psi | 90% | 2871 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,747 psi | 78% | 2812 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 53,548 psi | 86% | 2785 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,201 psi | 89% | 2812 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,259 psi | 89% | 2884 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,088 psi | 63% | 2759 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 53,969 psi | 87% | 2795 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,356 psi | 79% | 2749 fps | 96.1% |
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% | 52,692 psi | 84% | 2657 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,252 psi | 73% | 2589 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,208 psi | 71% | 2579 fps | 95.7% |
| Accurate 3100 | <<locked>> | 94% | 37,405 psi | 60% | 2539 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 42,844 psi | 69% | 2589 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 31,778 psi | 51% | 2425 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 48,776 psi | 78% | 2710 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 41,568 psi | 67% | 2566 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 96% | 47,398 psi | 76% | 2749 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,952 psi | 82% | 2713 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,185 psi | 84% | 2687 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,049 psi | 72% | 2762 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 47,166 psi | 76% | 2746 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,278 psi | 66% | 2582 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,353 psi | 71% | 2651 fps | 99.4% |
| Alliant Reloder-16 | 51.6 gr | 80% | 31,981 psi | 51% | 2441 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 35,911 psi | 58% | 2569 fps | 98.8% |
| Alliant Reloder-19 | <<locked>> | 96% | 46,485 psi | 75% | 2736 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 86% | 27,775 psi | 45% | 2349 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 98% | 35,969 psi | 58% | 2579 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 90% | 34,374 psi | 55% | 2589 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,298 psi | 77% | 2720 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 41,176 psi | 66% | 2589 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 41,785 psi | 67% | 2566 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,460 psi | 84% | 2697 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,401 psi | 81% | 2740 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,974 psi | 67% | 2598 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 84% | 39,189 psi | 63% | 2592 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 86% | 45,542 psi | 73% | 2674 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 49,298 psi | 79% | 2720 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,428 psi | 47% | 2343 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,745 psi | 73% | 2700 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 41,423 psi | 66% | 2664 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,745 psi | 43% | 1542 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,224 psi | 76% | 2671 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 49,472 psi | 79% | 2703 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,685 psi | 70% | 2598 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,934 psi | 74% | 2621 fps | 97% |
| IMR 4350 | <<locked>> | 88% | 42,380 psi | 68% | 2602 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 82% | 40,915 psi | 66% | 2549 fps | 95.5% |
| IMR 4831 | <<locked>> | 80% | 30,980 psi | 50% | 2388 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 45,469 psi | 73% | 2680 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 50,952 psi | 82% | 2713 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,327 psi | 77% | 2684 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,457 psi | 78% | 2644 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 43,569 psi | 70% | 2598 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 35,752 psi | 57% | 2441 fps | 95.5% |
| Lovex S070 | <<locked>> | 84% | 38,624 psi | 62% | 2526 fps | 95.2% |
| Lovex S071 | <<locked>> | 98% | 35,650 psi | 57% | 2500 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 47,718 psi | 77% | 2661 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,124 psi | 77% | 2661 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,700 psi | 70% | 2638 fps | 99.6% |
| Norma 204 | <<locked>> | 92% | 48,051 psi | 77% | 2743 fps | 95.6% |
| Norma MRP | <<locked>> | 94% | 39,871 psi | 64% | 2680 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 32,140 psi | 52% | 2428 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 43,758 psi | 70% | 2657 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 35,897 psi | 58% | 2526 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 51,039 psi | 82% | 2733 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,676 psi | 81% | 2746 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,035 psi | 43% | 1578 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,105 psi | 68% | 2582 fps | 96.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,398 psi | 76% | 2759 fps | 99.7% |
| ReloadSwiss RS 60 | 55.6 gr | 80% | 38,261 psi | 61% | 2628 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,546 psi | 51% | 2441 fps | 95% |
| ReloadSwiss RS 70 | 57.9 gr | 82% | 33,750 psi | 54% | 2507 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 51,648 psi | 83% | 2690 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,252 psi | 73% | 2612 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 38,624 psi | 62% | 2533 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 98% | 52,257 psi | 84% | 2782 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 96% | 45,223 psi | 73% | 2717 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 84% | 41,785 psi | 67% | 2566 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,752 psi | 57% | 2441 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,327 psi | 77% | 2684 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,569 psi | 70% | 2598 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 38,624 psi | 62% | 2526 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,842 psi | 64% | 2589 fps | 99% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,429 psi | 79% | 2707 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,224 psi | 76% | 2680 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,776 psi | 78% | 2602 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,857 psi | 66% | 2470 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 39,885 psi | 64% | 2493 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 44,788 psi | 72% | 2713 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 48,559 psi | 78% | 2605 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,110 psi | 79% | 2700 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 39,465 psi | 63% | 2539 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 28,747 psi | 46% | 2382 fps | 97.8% |
| Somchem S385 | <<locked>> | 94% | 43,047 psi | 69% | 2648 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 49,284 psi | 79% | 2589 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,165 psi | 72% | 2582 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,629 psi | 73% | 2595 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,478 psi | 60% | 2474 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 33,547 psi | 54% | 2434 fps | 96.1% |
| Vihtavuori N530 | <<locked>> | 80% | 51,227 psi | 82% | 2710 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,121 psi | 71% | 2589 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,112 psi | 53% | 2434 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 86% | 30,284 psi | 49% | 2428 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,083 psi | 53% | 2408 fps | 98.1% |
| Winchester 748 | <<locked>> | 80% | 51,503 psi | 83% | 2759 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 39,407 psi | 63% | 2595 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,949 psi | 45% | 2431 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,065 psi | 75% | 2687 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 45,890 psi | 74% | 2690 fps | 95.2% |
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 102 powders for .300 H&H Mag. loaded with the .308 | 176gr | MRR Green Long Range. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,943 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,943 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 (430 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 176.0 gr projectile in 0.308" calls for a 1:10.5 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. ReloadSwiss RS 60, ReloadSwiss RS 70, Alliant Reloder-16 rank at the top here: for .300 H&H Mag. with the .308 | 176gr | MRR Green Long Range 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.