Load Specifications
Bullet Manufacturer:Lehigh Defense
Bullet Weight:175 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:1:11.0
Load data in caliber .300 H&H Mag. with .308 | 175gr | Lehigh Defense Controlled Chaos 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 70, Alliant Reloder-16 and Hodgdon Superformance.
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 2495 | <<locked>> | 84% | 53,867 psi | 86% | 2717 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 53,301 psi | 85% | 2730 fps | 97.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,109 psi | 77% | 2746 fps | 98.4% |
| Accurate 4064 | <<locked>> | 86% | 54,056 psi | 87% | 2766 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,172 psi | 87% | 2861 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 53,621 psi | 86% | 2792 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,737 psi | 88% | 2799 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,608 psi | 89% | 2897 fps | 97.4% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,811 psi | 89% | 2792 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 53,447 psi | 86% | 2913 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 55,245 psi | 89% | 2890 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,027 psi | 88% | 2818 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,303 psi | 89% | 2838 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,114 psi | 88% | 2917 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,420 psi | 90% | 2946 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,447 psi | 87% | 2881 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,196 psi | 77% | 2822 fps | 96.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,411 psi | 73% | 2769 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,856 psi | 64% | 2677 fps | 97.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,663 psi | 83% | 2953 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 53,113 psi | 85% | 2805 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 55,767 psi | 89% | 2835 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,196 psi | 77% | 2822 fps | 96.2% |
| Bofors RP7 | <<locked>> | 92% | 55,390 psi | 89% | 2812 fps | 98.3% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,361 psi | 89% | 2818 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 52,895 psi | 85% | 2795 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 90% | 54,447 psi | 87% | 2877 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 94% | 54,897 psi | 88% | 2841 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 82% | 54,186 psi | 87% | 2802 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,056 psi | 88% | 2838 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,186 psi | 87% | 2838 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,171 psi | 85% | 2890 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,100 psi | 58% | 1739 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,317 psi | 87% | 2792 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 53,156 psi | 85% | 2762 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 53,461 psi | 86% | 2769 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,956 psi | 90% | 2795 fps | 98.8% |
| IMR 4350 | <<locked>> | 96% | 56,101 psi | 90% | 2841 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,824 psi | 86% | 2789 fps | 98.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 55,361 psi | 89% | 2861 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 53,388 psi | 86% | 2815 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 55,811 psi | 89% | 2792 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 53,505 psi | 86% | 2766 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,028 psi | 90% | 2769 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,230 psi | 87% | 2776 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 53,548 psi | 86% | 2785 fps | 99.3% |
| Lovex S070 | <<locked>> | 94% | 54,665 psi | 88% | 2825 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,030 psi | 64% | 2595 fps | 96.6% |
| Norma 201 | <<locked>> | 84% | 55,753 psi | 89% | 2789 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,362 psi | 90% | 2785 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,592 psi | 88% | 2825 fps | 100% |
| Norma 204 | <<locked>> | 94% | 53,287 psi | 85% | 2838 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 50,763 psi | 81% | 2900 fps | 98.1% |
| Norma URP | <<locked>> | 94% | 53,026 psi | 85% | 2844 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 86% | 55,361 psi | 89% | 2851 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,259 psi | 87% | 2923 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 96% | 55,230 psi | 89% | 2897 fps | 99.3% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,992 psi | 75% | 2776 fps | 96.4% |
| Ramshot TAC | <<locked>> | 82% | 55,912 psi | 90% | 2815 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,709 psi | 89% | 2828 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,608 psi | 59% | 1778 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 53,098 psi | 85% | 2782 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,173 psi | 90% | 2907 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 56,057 psi | 90% | 2943 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 53,867 psi | 86% | 2881 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 52,750 psi | 85% | 2907 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 86% | 56,362 psi | 90% | 2785 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,883 psi | 90% | 2828 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 53,867 psi | 86% | 2812 fps | 95.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,519 psi | 86% | 2864 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 92% | 55,390 psi | 89% | 2812 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 53,548 psi | 86% | 2785 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 82% | 53,505 psi | 86% | 2766 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,230 psi | 87% | 2776 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,665 psi | 88% | 2825 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,824 psi | 86% | 2838 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,636 psi | 88% | 2795 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,303 psi | 89% | 2815 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 53,432 psi | 86% | 2674 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,056 psi | 87% | 2677 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 53,447 psi | 86% | 2740 fps | 98.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,026 psi | 85% | 2861 fps | 97.2% |
| Somchem S335 | <<locked>> | 84% | 56,376 psi | 90% | 2720 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,114 psi | 87% | 2782 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 55,869 psi | 90% | 2825 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 55,230 psi | 89% | 2900 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,462 psi | 87% | 2848 fps | 98.2% |
| Unknown powder | <<locked>> | 92% | 53,969 psi | 87% | 2854 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 82% | 53,911 psi | 86% | 2661 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,391 psi | 90% | 2746 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,447 psi | 86% | 2717 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 53,824 psi | 86% | 2753 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,347 psi | 89% | 2841 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 46,760 psi | 75% | 2707 fps | 96.2% |
| Vihtavuori N530 | <<locked>> | 82% | 56,289 psi | 90% | 2789 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 55,013 psi | 88% | 2759 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,505 psi | 87% | 2848 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,546 psi | 81% | 2844 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,143 psi | 88% | 2815 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,447 psi | 87% | 2877 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,770 psi | 65% | 2805 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 52,924 psi | 85% | 2812 fps | 96.9% |
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 2495 | <<locked>> | 80% | 47,369 psi | 76% | 2621 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 43,830 psi | 70% | 2569 fps | 95.6% |
| Accurate 3100 | <<locked>> | 92% | 36,695 psi | 59% | 2526 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 44,846 psi | 72% | 2625 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,460 psi | 54% | 2467 fps | 96.2% |
| ADI AR 2206H | <<locked>> | 80% | 50,183 psi | 80% | 2736 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,598 psi | 68% | 2592 fps | 99% |
| ADI AR 2209 | <<locked>> | 94% | 45,788 psi | 73% | 2726 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,272 psi | 84% | 2740 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,354 psi | 74% | 2792 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 45,629 psi | 73% | 2726 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,757 psi | 69% | 2615 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,788 psi | 73% | 2680 fps | 99.5% |
| Alliant Reloder-16 | 52.2 gr | 80% | 33,214 psi | 53% | 2477 fps | 96.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,202 psi | 60% | 2602 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 94% | 45,034 psi | 72% | 2717 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 45,005 psi | 72% | 2759 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,470 psi | 44% | 2339 fps | 95.2% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,114 psi | 56% | 2559 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 88% | 33,533 psi | 54% | 2569 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,777 psi | 80% | 2753 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 42,844 psi | 69% | 2625 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 45,005 psi | 72% | 2759 fps | 95.2% |
| Bofors RP7 | <<locked>> | 84% | 43,337 psi | 69% | 2602 fps | 95.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,866 psi | 83% | 2766 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,439 psi | 70% | 2631 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 80% | 38,653 psi | 62% | 2585 fps | 95% |
| Hodgdon H4350 | <<locked>> | 88% | 45,687 psi | 73% | 2684 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 50,749 psi | 81% | 2749 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,792 psi | 49% | 2382 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,483 psi | 71% | 2680 fps | 99.9% |
| Hodgdon Superformance | 63.9 gr | 86% | 42,815 psi | 69% | 2700 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,977 psi | 43% | 1552 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,136 psi | 72% | 2641 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 46,847 psi | 75% | 2667 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,061 psi | 67% | 2572 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,495 psi | 67% | 2539 fps | 95.9% |
| IMR 4350 | <<locked>> | 86% | 41,002 psi | 66% | 2575 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,581 psi | 63% | 2526 fps | 95.1% |
| IMR 4831 | <<locked>> | 82% | 31,343 psi | 50% | 2398 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 46,963 psi | 75% | 2710 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 52,272 psi | 84% | 2740 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,241 psi | 81% | 2717 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,705 psi | 80% | 2671 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,107 psi | 72% | 2628 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,173 psi | 60% | 2477 fps | 96% |
| Lovex S070 | <<locked>> | 84% | 40,074 psi | 64% | 2559 fps | 95.7% |
| Lovex S071 | <<locked>> | 96% | 35,259 psi | 57% | 2493 fps | 95% |
| Norma 201 | <<locked>> | 80% | 49,298 psi | 79% | 2690 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,574 psi | 79% | 2687 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,179 psi | 72% | 2671 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 46,441 psi | 74% | 2720 fps | 95.2% |
| Norma MRP | <<locked>> | 94% | 41,350 psi | 66% | 2720 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 33,518 psi | 54% | 2464 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 80% | 45,107 psi | 72% | 2687 fps | 99.6% |
| Ramshot Grand | <<locked>> | 98% | 50,502 psi | 81% | 2858 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 84% | 37,173 psi | 60% | 2559 fps | 95.5% |
| Ramshot Magnum | <<locked>> | 98% | 43,526 psi | 70% | 2707 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 52,228 psi | 84% | 2759 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,214 psi | 84% | 2776 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,325 psi | 44% | 1588 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,671 psi | 70% | 2615 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,182 psi | 79% | 2795 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,581 psi | 63% | 2661 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,170 psi | 53% | 2480 fps | 95.7% |
| ReloadSwiss RS 70 | 58.5 gr | 82% | 34,969 psi | 56% | 2539 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 46,847 psi | 75% | 2641 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,277 psi | 65% | 2569 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 96% | 50,372 psi | 81% | 2756 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 94% | 43,845 psi | 70% | 2697 fps | 95% |
| Rottweil R 907 | <<locked>> | 84% | 43,337 psi | 69% | 2602 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,173 psi | 60% | 2477 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,241 psi | 81% | 2717 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,107 psi | 72% | 2628 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 40,074 psi | 64% | 2559 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,408 psi | 66% | 2621 fps | 99.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,937 psi | 82% | 2736 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,776 psi | 78% | 2710 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,183 psi | 80% | 2628 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,192 psi | 68% | 2500 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 38,754 psi | 62% | 2474 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 46,572 psi | 75% | 2749 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 50,009 psi | 80% | 2628 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,691 psi | 81% | 2730 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,002 psi | 66% | 2575 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 30,124 psi | 48% | 2421 fps | 98.3% |
| Somchem S385 | <<locked>> | 92% | 41,727 psi | 67% | 2625 fps | 95.3% |
| Unknown powder | <<locked>> | 80% | 36,303 psi | 58% | 2523 fps | 96.4% |
| Vihtavuori N133 | <<locked>> | 80% | 50,633 psi | 81% | 2615 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,775 psi | 75% | 2612 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,036 psi | 75% | 2621 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,914 psi | 62% | 2507 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 34,940 psi | 56% | 2467 fps | 96.6% |
| Vihtavuori N165 | <<locked>> | 98% | 43,845 psi | 70% | 2654 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 52,620 psi | 84% | 2736 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,513 psi | 73% | 2618 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,519 psi | 55% | 2470 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 84% | 29,820 psi | 48% | 2415 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,389 psi | 55% | 2444 fps | 98.5% |
| Winchester 760 | <<locked>> | 80% | 38,653 psi | 62% | 2585 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,528 psi | 44% | 2421 fps | 95.9% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,658 psi | 73% | 2690 fps | 95.1% |
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 | 175gr | Lehigh Defense Controlled Chaos. Alliant Reloder-26 delivers the highest muzzle velocity at 2,953 fps; across all powders the maximum-charge window runs from 1,739 fps to 2,953 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 58–90 %, leaving at least 10 % headroom. The 175.0 gr projectile in 0.308" calls for a 1:11.0 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 70, Alliant Reloder-16, Hodgdon Superformance rank at the top here: for .300 H&H Mag. with the .308 | 175gr | Lehigh Defense Controlled Chaos 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.