Load Specifications
Bullet Manufacturer:Rhino Bullets
Bullet Weight:175 gr
Bullet Diameter:0.31"
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:1:12.0
Load data in caliber .300 H&H Mag. with .310 | 175gr | Rhino Penetrator bullet and 100 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.
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% | 54,462 psi | 87% | 2726 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 56,246 psi | 90% | 2792 fps | 98.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,197 psi | 79% | 2766 fps | 98.6% |
| Accurate 4064 | <<locked>> | 86% | 54,897 psi | 88% | 2782 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,201 psi | 89% | 2877 fps | 99.9% |
| Accurate High Countryᴾ | <<locked>> | 100% | 53,505 psi | 86% | 2953 fps | 96.3% |
| ADI AR 2206H | <<locked>> | 82% | 54,099 psi | 87% | 2805 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,187 psi | 88% | 2808 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,376 psi | 90% | 2913 fps | 97.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,304 psi | 90% | 2802 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,157 psi | 87% | 2927 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 56,362 psi | 90% | 2913 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,782 psi | 89% | 2831 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,057 psi | 90% | 2851 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,811 psi | 89% | 2930 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 53,330 psi | 86% | 2904 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,506 psi | 89% | 2900 fps | 97.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,936 psi | 78% | 2838 fps | 96.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,180 psi | 74% | 2785 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,451 psi | 65% | 2694 fps | 97.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,417 psi | 84% | 2969 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,099 psi | 87% | 2822 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 53,113 psi | 85% | 2799 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,936 psi | 78% | 2838 fps | 96.4% |
| Bofors RP7 | <<locked>> | 92% | 56,289 psi | 90% | 2831 fps | 98.5% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,376 psi | 90% | 2835 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 53,592 psi | 86% | 2812 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 53,780 psi | 86% | 2871 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 90% | 54,012 psi | 87% | 2835 fps | 97.6% |
| Hodgdon H4895 | <<locked>> | 82% | 54,737 psi | 88% | 2815 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 56,043 psi | 90% | 2854 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,665 psi | 88% | 2848 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,911 psi | 86% | 2904 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,129 psi | 58% | 1742 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,854 psi | 90% | 2818 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,158 psi | 88% | 2792 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,723 psi | 88% | 2792 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,099 psi | 87% | 2772 fps | 98.6% |
| IMR 4350 | <<locked>> | 94% | 53,388 psi | 86% | 2805 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,418 psi | 87% | 2802 fps | 98.6% |
| IMR 4831 | <<locked>> | 96% | 55,506 psi | 89% | 2867 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 54,157 psi | 87% | 2831 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 55,941 psi | 90% | 2841 fps | 95.8% |
| IMR 8208 XBR | <<locked>> | 82% | 56,304 psi | 90% | 2802 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,302 psi | 87% | 2779 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 53,272 psi | 85% | 2733 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,737 psi | 88% | 2785 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,418 psi | 87% | 2802 fps | 99.4% |
| Lovex S070 | <<locked>> | 94% | 55,506 psi | 89% | 2841 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,843 psi | 65% | 2615 fps | 96.9% |
| Norma 201 | <<locked>> | 84% | 56,260 psi | 90% | 2799 fps | 100% |
| Norma 202 | <<locked>> | 82% | 53,534 psi | 86% | 2749 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,347 psi | 89% | 2838 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,085 psi | 87% | 2858 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 51,735 psi | 83% | 2920 fps | 98.4% |
| Norma URP | <<locked>> | 94% | 53,940 psi | 86% | 2864 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 56,028 psi | 90% | 2867 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 56,405 psi | 90% | 2917 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,405 psi | 90% | 2841 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,637 psi | 59% | 1781 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 53,708 psi | 86% | 2795 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 53,272 psi | 85% | 2864 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 53,011 psi | 85% | 2900 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,766 psi | 88% | 2897 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 53,548 psi | 86% | 2923 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 53,534 psi | 86% | 2749 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 52,982 psi | 85% | 2792 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 54,679 psi | 88% | 2831 fps | 96.2% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,360 psi | 87% | 2884 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 92% | 56,289 psi | 90% | 2831 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,418 psi | 87% | 2802 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,302 psi | 87% | 2779 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,737 psi | 88% | 2785 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,506 psi | 89% | 2841 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,534 psi | 87% | 2851 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,347 psi | 89% | 2808 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,999 psi | 90% | 2828 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 53,998 psi | 87% | 2687 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,520 psi | 87% | 2687 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,317 psi | 87% | 2756 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,853 psi | 86% | 2877 fps | 97.5% |
| Somchem S335 | <<locked>> | 82% | 53,606 psi | 86% | 2684 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,042 psi | 88% | 2799 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 53,243 psi | 85% | 2789 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 56,231 psi | 90% | 2913 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,216 psi | 89% | 2864 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 82% | 54,447 psi | 87% | 2671 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 53,766 psi | 86% | 2713 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,244 psi | 87% | 2733 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,549 psi | 87% | 2766 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 56,304 psi | 90% | 2858 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,703 psi | 76% | 2730 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 86% | 55,738 psi | 89% | 2772 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 55,347 psi | 89% | 2864 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,459 psi | 83% | 2861 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,927 psi | 90% | 2828 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 54,012 psi | 87% | 2874 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,568 psi | 67% | 2825 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 56,231 psi | 90% | 2838 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 51,750 psi | 83% | 2799 fps | 96.7% |
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% | 48,008 psi | 77% | 2635 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,151 psi | 74% | 2625 fps | 96.4% |
| Accurate 3100 | <<locked>> | 92% | 37,289 psi | 60% | 2543 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 45,426 psi | 73% | 2638 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,156 psi | 55% | 2484 fps | 96.6% |
| Accurate High Country | <<locked>> | 98% | 49,922 psi | 80% | 2890 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 50,937 psi | 82% | 2753 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,294 psi | 69% | 2608 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 94% | 46,340 psi | 74% | 2740 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,040 psi | 85% | 2753 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,079 psi | 75% | 2808 fps | 99.7% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 46,354 psi | 74% | 2743 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,497 psi | 70% | 2631 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,528 psi | 75% | 2697 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,678 psi | 54% | 2493 fps | 96.6% |
| Alliant Reloder-17 | 57 gr | 80% | 37,855 psi | 61% | 2618 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 94% | 45,759 psi | 73% | 2733 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 98% | 45,745 psi | 73% | 2779 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,804 psi | 45% | 2352 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,723 psi | 57% | 2579 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 88% | 34,200 psi | 55% | 2589 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,459 psi | 81% | 2766 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 43,627 psi | 70% | 2641 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 45,745 psi | 73% | 2779 fps | 95.6% |
| Bofors RP7 | <<locked>> | 82% | 41,176 psi | 66% | 2562 fps | 95.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,562 psi | 84% | 2779 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,932 psi | 70% | 2644 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 82% | 38,725 psi | 62% | 2589 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 84% | 44,614 psi | 72% | 2667 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 51,517 psi | 83% | 2766 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,212 psi | 50% | 2395 fps | 97.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,877 psi | 77% | 2743 fps | 100% |
| Hodgdon Superformance | 63.3 gr | 84% | 40,553 psi | 65% | 2654 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,934 psi | 43% | 1555 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,226 psi | 79% | 2713 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 51,706 psi | 83% | 2743 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,527 psi | 73% | 2641 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,790 psi | 77% | 2664 fps | 97.5% |
| IMR 4350 | <<locked>> | 86% | 41,597 psi | 67% | 2592 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,030 psi | 64% | 2536 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 32,909 psi | 53% | 2441 fps | 96.2% |
| IMR 4895 | <<locked>> | 80% | 47,718 psi | 77% | 2726 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 98% | 52,460 psi | 84% | 2785 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 53,040 psi | 85% | 2753 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,807 psi | 81% | 2730 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,183 psi | 80% | 2684 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,614 psi | 73% | 2641 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,608 psi | 60% | 2490 fps | 96.2% |
| Lovex S070 | <<locked>> | 82% | 38,116 psi | 61% | 2520 fps | 95.1% |
| Lovex S071 | <<locked>> | 96% | 35,868 psi | 58% | 2510 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 49,850 psi | 80% | 2700 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,372 psi | 81% | 2700 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,905 psi | 74% | 2687 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 47,050 psi | 75% | 2733 fps | 95.5% |
| Norma MRP | <<locked>> | 92% | 39,334 psi | 63% | 2677 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 34,185 psi | 55% | 2484 fps | 96.4% |
| Ramshot Big Game | <<locked>> | 80% | 45,818 psi | 73% | 2700 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 37,739 psi | 61% | 2575 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,924 psi | 85% | 2792 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,470 psi | 44% | 1594 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,048 psi | 71% | 2625 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,719 psi | 80% | 2808 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,263 psi | 65% | 2677 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,794 psi | 54% | 2500 fps | 96% |
| ReloadSwiss RS 70 | 57.9 gr | 80% | 33,228 psi | 53% | 2497 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 47,413 psi | 76% | 2654 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,031 psi | 66% | 2589 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 96% | 51,198 psi | 82% | 2776 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 94% | 44,657 psi | 72% | 2717 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 82% | 41,176 psi | 66% | 2562 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,608 psi | 60% | 2490 fps | 96.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,807 psi | 81% | 2730 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,614 psi | 73% | 2641 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 38,116 psi | 61% | 2520 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,901 psi | 67% | 2635 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,576 psi | 83% | 2753 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,240 psi | 79% | 2723 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,734 psi | 81% | 2638 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,670 psi | 68% | 2510 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,146 psi | 63% | 2484 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,222 psi | 71% | 2710 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 50,502 psi | 81% | 2641 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,343 psi | 82% | 2743 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,495 psi | 67% | 2585 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 30,719 psi | 49% | 2438 fps | 98.5% |
| Somchem S385 | <<locked>> | 92% | 42,496 psi | 68% | 2644 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 51,198 psi | 82% | 2625 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,413 psi | 76% | 2625 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,776 psi | 77% | 2638 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,581 psi | 63% | 2523 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 35,578 psi | 57% | 2484 fps | 96.8% |
| Vihtavuori N165 | <<locked>> | 98% | 44,541 psi | 71% | 2671 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 45,948 psi | 74% | 2628 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,925 psi | 56% | 2480 fps | 96.4% |
| Vihtavuori N555 | <<locked>> | 84% | 30,443 psi | 49% | 2434 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,882 psi | 56% | 2457 fps | 98.7% |
| Winchester 760 | <<locked>> | 82% | 38,725 psi | 62% | 2589 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,905 psi | 45% | 2438 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,168 psi | 79% | 2730 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 45,034 psi | 72% | 2684 fps | 95% |
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 100 powders for .300 H&H Mag. loaded with the .310 | 175gr | Rhino Penetrator. Alliant Reloder-26 delivers the highest muzzle velocity at 2,969 fps; across all powders the maximum-charge window runs from 1,742 fps to 2,969 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 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 0.31" calls for a 1:12.0 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 H&H Mag. with the .310 | 175gr | Rhino Penetrator 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.