Load Specifications
Bullet:.308 | 175gr | Atomic 29 HP
Bullet Manufacturer:Atomic 29
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:1:11.5
Load data in caliber .300 H&H Mag. with .308 | 175gr | Atomic 29 HP 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 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>> | 86% | 56,173 psi | 90% | 2756 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 54,998 psi | 88% | 2776 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,239 psi | 76% | 2740 fps | 98.3% |
| Accurate 4064 | <<locked>> | 88% | 56,405 psi | 90% | 2808 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 53,461 psi | 86% | 2858 fps | 99.9% |
| Accurate High Countryᴾ | <<locked>> | 100% | 52,011 psi | 83% | 2933 fps | 96% |
| ADI AR 2206H | <<locked>> | 84% | 56,376 psi | 90% | 2844 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 53,983 psi | 87% | 2795 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,897 psi | 88% | 2894 fps | 97.4% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,056 psi | 88% | 2789 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 52,881 psi | 85% | 2913 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 54,810 psi | 88% | 2890 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,360 psi | 87% | 2818 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,694 psi | 88% | 2838 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,520 psi | 87% | 2913 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 55,738 psi | 89% | 2943 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,969 psi | 87% | 2881 fps | 97.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 47,326 psi | 76% | 2815 fps | 96% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,585 psi | 71% | 2762 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,001 psi | 63% | 2664 fps | 97% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,908 psi | 82% | 2949 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 56,391 psi | 90% | 2861 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 54,926 psi | 88% | 2828 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 47,326 psi | 76% | 2815 fps | 96% |
| Bofors RP7 | <<locked>> | 92% | 54,723 psi | 88% | 2812 fps | 98.3% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,665 psi | 88% | 2815 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,767 psi | 89% | 2848 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 94% | 56,072 psi | 90% | 2910 fps | 99% |
| Hodgdon H4350 | <<locked>> | 92% | 56,405 psi | 90% | 2874 fps | 98% |
| Hodgdon H4895 | <<locked>> | 82% | 53,359 psi | 86% | 2799 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 54,636 psi | 88% | 2841 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 53,301 psi | 85% | 2835 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 52,620 psi | 84% | 2887 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,853 psi | 57% | 1739 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,636 psi | 88% | 2802 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 53,969 psi | 87% | 2782 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 53,476 psi | 86% | 2776 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 52,939 psi | 85% | 2756 fps | 98.4% |
| IMR 4350 | <<locked>> | 96% | 55,680 psi | 89% | 2844 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,272 psi | 85% | 2789 fps | 98.4% |
| IMR 4831 | <<locked>> | 96% | 53,998 psi | 87% | 2851 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 56,115 psi | 90% | 2867 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 55,056 psi | 88% | 2789 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 56,391 psi | 90% | 2815 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,376 psi | 89% | 2769 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 53,563 psi | 86% | 2776 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,391 psi | 90% | 2838 fps | 99.6% |
| Lovex S070 | <<locked>> | 94% | 54,070 psi | 87% | 2825 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,972 psi | 62% | 2582 fps | 96.3% |
| Norma 201 | <<locked>> | 84% | 54,752 psi | 88% | 2782 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,782 psi | 89% | 2785 fps | 100% |
| Norma 203B | <<locked>> | 86% | 53,954 psi | 87% | 2825 fps | 100% |
| Norma 204 | <<locked>> | 96% | 56,304 psi | 90% | 2894 fps | 97.5% |
| Norma MRPᴾ | <<locked>> | 100% | 50,328 psi | 81% | 2904 fps | 98.1% |
| Norma URP | <<locked>> | 96% | 56,014 psi | 90% | 2897 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 54,694 psi | 88% | 2851 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 54,752 psi | 88% | 2897 fps | 99.3% |
| Ramshot TAC | <<locked>> | 82% | 55,332 psi | 89% | 2815 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,129 psi | 88% | 2828 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,535 psi | 59% | 1781 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,970 psi | 90% | 2835 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,535 psi | 89% | 2904 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,405 psi | 89% | 2940 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 53,258 psi | 85% | 2881 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,956 psi | 90% | 2963 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 55,434 psi | 89% | 2759 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,361 psi | 89% | 2782 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,042 psi | 88% | 2828 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 53,214 psi | 85% | 2812 fps | 95.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,997 psi | 85% | 2864 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 92% | 54,723 psi | 88% | 2812 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,391 psi | 90% | 2838 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 56,391 psi | 90% | 2815 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 53,563 psi | 86% | 2776 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,070 psi | 87% | 2825 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,185 psi | 85% | 2835 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 53,940 psi | 86% | 2792 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,723 psi | 88% | 2815 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,173 psi | 90% | 2720 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,301 psi | 85% | 2674 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 56,405 psi | 90% | 2792 fps | 98.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,518 psi | 84% | 2861 fps | 97.2% |
| Somchem S335 | <<locked>> | 84% | 55,492 psi | 89% | 2717 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 53,490 psi | 86% | 2779 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 55,100 psi | 88% | 2822 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 54,708 psi | 88% | 2897 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,490 psi | 86% | 2841 fps | 98.1% |
| Vihtavuori N133 | <<locked>> | 82% | 53,272 psi | 85% | 2661 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,782 psi | 89% | 2746 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 56,260 psi | 90% | 2762 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 53,127 psi | 85% | 2753 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 54,911 psi | 88% | 2844 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 46,151 psi | 74% | 2703 fps | 96.1% |
| Vihtavuori N530 | <<locked>> | 82% | 55,492 psi | 89% | 2789 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 54,360 psi | 87% | 2759 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 53,679 psi | 86% | 2841 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,806 psi | 80% | 2841 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,679 psi | 88% | 2815 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,999 psi | 90% | 2838 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 56,347 psi | 90% | 2913 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,001 psi | 64% | 2795 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 54,882 psi | 88% | 2822 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 50,444 psi | 81% | 2782 fps | 96.4% |
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% | 46,006 psi | 74% | 2612 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,875 psi | 72% | 2605 fps | 96% |
| Accurate 3100 | <<locked>> | 92% | 35,679 psi | 57% | 2513 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 43,569 psi | 70% | 2615 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,532 psi | 52% | 2454 fps | 95.9% |
| Accurate High Country | <<locked>> | 98% | 48,167 psi | 77% | 2864 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 49,617 psi | 80% | 2740 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,148 psi | 68% | 2589 fps | 99% |
| ADI AR 2209 | <<locked>> | 94% | 45,121 psi | 72% | 2720 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,793 psi | 83% | 2740 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,818 psi | 73% | 2789 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 45,150 psi | 72% | 2723 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,119 psi | 68% | 2612 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,179 psi | 72% | 2677 fps | 99.5% |
| Alliant Reloder-16 | 52.8 gr | 80% | 32,648 psi | 52% | 2470 fps | 96.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,564 psi | 59% | 2595 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 94% | 44,556 psi | 71% | 2713 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 98% | 44,411 psi | 71% | 2756 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,442 psi | 46% | 2382 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 96% | 34,461 psi | 55% | 2549 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 88% | 32,808 psi | 53% | 2556 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,226 psi | 79% | 2749 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 42,032 psi | 67% | 2618 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 44,411 psi | 71% | 2756 fps | 95.1% |
| Bofors RP7 | <<locked>> | 84% | 42,467 psi | 68% | 2595 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,155 psi | 82% | 2766 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,525 psi | 68% | 2621 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 84% | 40,089 psi | 64% | 2621 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 84% | 43,439 psi | 70% | 2648 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 50,169 psi | 80% | 2746 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,965 psi | 48% | 2369 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,543 psi | 75% | 2726 fps | 100% |
| Hodgdon Superformance | 64.6 gr | 86% | 42,264 psi | 68% | 2697 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,818 psi | 43% | 1555 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,037 psi | 77% | 2697 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 50,270 psi | 81% | 2730 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,280 psi | 71% | 2625 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,659 psi | 75% | 2648 fps | 97.3% |
| IMR 4350 | <<locked>> | 86% | 40,393 psi | 65% | 2572 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,914 psi | 62% | 2520 fps | 95% |
| IMR 4831 | <<locked>> | 80% | 31,546 psi | 51% | 2411 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 46,340 psi | 74% | 2710 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 51,793 psi | 83% | 2740 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,211 psi | 79% | 2710 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,052 psi | 79% | 2671 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 44,208 psi | 71% | 2621 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,303 psi | 58% | 2467 fps | 95.8% |
| Lovex S070 | <<locked>> | 84% | 39,291 psi | 63% | 2552 fps | 95.5% |
| Lovex S071 | <<locked>> | 98% | 36,593 psi | 59% | 2533 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 48,356 psi | 78% | 2684 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,008 psi | 79% | 2687 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,512 psi | 71% | 2667 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 45,803 psi | 73% | 2717 fps | 95.1% |
| Norma MRP | <<locked>> | 94% | 40,698 psi | 65% | 2713 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 32,851 psi | 53% | 2457 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 44,512 psi | 71% | 2684 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 36,492 psi | 59% | 2552 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 51,677 psi | 83% | 2759 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,663 psi | 83% | 2776 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,108 psi | 43% | 1591 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,830 psi | 69% | 2608 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,298 psi | 77% | 2789 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,957 psi | 62% | 2657 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,387 psi | 52% | 2470 fps | 95.4% |
| ReloadSwiss RS 70 | 59.1 gr | 82% | 34,272 psi | 55% | 2533 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 52,388 psi | 84% | 2713 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,934 psi | 74% | 2635 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,479 psi | 63% | 2562 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 96% | 49,937 psi | 80% | 2756 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 96% | 46,238 psi | 74% | 2749 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 84% | 42,467 psi | 68% | 2595 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,303 psi | 58% | 2467 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,211 psi | 79% | 2710 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,208 psi | 71% | 2621 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 39,291 psi | 63% | 2552 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,596 psi | 65% | 2615 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,183 psi | 80% | 2733 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,993 psi | 77% | 2707 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,472 psi | 79% | 2625 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,495 psi | 67% | 2497 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,524 psi | 65% | 2520 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 45,803 psi | 73% | 2743 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 49,197 psi | 79% | 2625 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,082 psi | 80% | 2730 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,089 psi | 64% | 2566 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 29,399 psi | 47% | 2408 fps | 98.1% |
| Somchem S385 | <<locked>> | 92% | 41,104 psi | 66% | 2621 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 49,995 psi | 80% | 2615 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,963 psi | 74% | 2608 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,499 psi | 75% | 2621 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,232 psi | 61% | 2500 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 34,287 psi | 55% | 2461 fps | 96.4% |
| Vihtavuori N165 | <<locked>> | 98% | 43,294 psi | 69% | 2651 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 52,112 psi | 84% | 2740 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,643 psi | 72% | 2612 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,605 psi | 54% | 2454 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 84% | 28,950 psi | 46% | 2398 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,736 psi | 54% | 2438 fps | 98.4% |
| Winchester 748 | <<locked>> | 80% | 52,359 psi | 84% | 2785 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 40,089 psi | 64% | 2621 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 88% | 26,643 psi | 43% | 2398 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,848 psi | 77% | 2713 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 46,934 psi | 75% | 2720 fps | 95.6% |
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 H&H Mag. loaded with the .308 | 175gr | Atomic 29 HP. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,963 fps; across all powders the maximum-charge window runs from 1,739 fps to 2,963 fps. Accurate 3100 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 (430 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 175.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, ADI AR 2209 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 | Atomic 29 HP 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.