Load Specifications
Bullet Manufacturer:Rhino Bullets
Bullet Weight:165 gr
Bullet Diameter:0.307"
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 .307 | 165gr | Rhino Penetrator bullet and 99 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 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% | 56,275 psi | 90% | 2795 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,477 psi | 89% | 2822 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 54,114 psi | 87% | 2828 fps | 97.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,253 psi | 74% | 2789 fps | 97.6% |
| Accurate 4064 | <<locked>> | 88% | 55,840 psi | 90% | 2877 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,927 psi | 90% | 2969 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 84% | 55,521 psi | 89% | 2907 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,376 psi | 90% | 2904 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,867 psi | 86% | 2946 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,259 psi | 87% | 2851 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,637 psi | 89% | 2825 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,303 psi | 89% | 3028 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 53,490 psi | 86% | 2940 fps | 96.5% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 53,490 psi | 86% | 2940 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 53,490 psi | 86% | 2877 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 53,809 psi | 86% | 2897 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 96% | 53,258 psi | 85% | 2969 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,563 psi | 87% | 3005 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,692 psi | 84% | 2930 fps | 96.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,816 psi | 70% | 2818 fps | 99.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,443 psi | 79% | 2995 fps | 99.4% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,259 psi | 89% | 2920 fps | 99.8% |
| Bofors RP3 | <<locked>> | 88% | 54,041 psi | 87% | 2890 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 53,824 psi | 86% | 2864 fps | 97.6% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,579 psi | 89% | 2831 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 53,780 psi | 86% | 2877 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,882 psi | 88% | 2907 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 94% | 54,810 psi | 88% | 2963 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 92% | 55,187 psi | 88% | 2927 fps | 97.2% |
| Hodgdon H4895 | <<locked>> | 84% | 56,130 psi | 90% | 2917 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 53,272 psi | 85% | 2897 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,811 psi | 89% | 2949 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,158 psi | 88% | 2999 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,839 psi | 57% | 1791 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 53,708 psi | 86% | 2864 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,275 psi | 90% | 2890 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,912 psi | 90% | 2887 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,579 psi | 89% | 2867 fps | 98.3% |
| IMR 4350 | <<locked>> | 96% | 54,534 psi | 87% | 2894 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,811 psi | 89% | 2900 fps | 98.3% |
| IMR 4831 | <<locked>> | 96% | 52,866 psi | 85% | 2904 fps | 99.7% |
| IMR 4895 | <<locked>> | 86% | 55,172 psi | 88% | 2927 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 54,259 psi | 87% | 2851 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,564 psi | 89% | 2881 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,592 psi | 88% | 2828 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,101 psi | 90% | 2884 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,477 psi | 89% | 2894 fps | 99.2% |
| Lovex S070 | <<locked>> | 96% | 56,405 psi | 90% | 2930 fps | 98.6% |
| Norma 201 | <<locked>> | 84% | 54,172 psi | 87% | 2848 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,694 psi | 88% | 2848 fps | 100% |
| Norma 203B | <<locked>> | 86% | 53,069 psi | 85% | 2884 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,172 psi | 88% | 2946 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 49,023 psi | 79% | 2946 fps | 97.2% |
| Norma URP | <<locked>> | 96% | 54,723 psi | 88% | 2953 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 86% | 53,534 psi | 86% | 2907 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 53,664 psi | 86% | 2949 fps | 98.8% |
| Ramshot TAC | <<locked>> | 82% | 54,447 psi | 87% | 2871 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,172 psi | 87% | 2887 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,521 psi | 59% | 1834 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,955 psi | 88% | 2887 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,404 psi | 87% | 2966 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,012 psi | 87% | 2999 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,593 psi | 89% | 2989 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,810 psi | 88% | 3018 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 82% | 55,071 psi | 88% | 2828 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,708 psi | 88% | 2848 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 54,114 psi | 87% | 2887 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,634 psi | 83% | 2910 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 92% | 53,824 psi | 86% | 2864 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,477 psi | 89% | 2894 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,564 psi | 89% | 2881 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,101 psi | 90% | 2884 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,405 psi | 90% | 2930 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,608 psi | 89% | 2946 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 53,084 psi | 85% | 2851 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 53,780 psi | 86% | 2871 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,463 psi | 89% | 2785 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,825 psi | 90% | 2785 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,463 psi | 89% | 2844 fps | 98.3% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,140 psi | 82% | 2907 fps | 96.2% |
| Somchem S335 | <<locked>> | 84% | 54,824 psi | 88% | 2782 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,318 psi | 90% | 2894 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,259 psi | 87% | 2884 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 53,171 psi | 85% | 2956 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,533 psi | 84% | 2894 fps | 97.3% |
| Vihtavuori N133 | <<locked>> | 84% | 55,840 psi | 90% | 2769 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,650 psi | 88% | 2808 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,390 psi | 89% | 2828 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,564 psi | 89% | 2861 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 53,664 psi | 86% | 2897 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 82% | 54,636 psi | 88% | 2851 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 53,519 psi | 86% | 2822 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,130 psi | 90% | 2953 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,617 psi | 78% | 2894 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 53,417 psi | 86% | 2871 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,984 psi | 88% | 2900 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,013 psi | 88% | 2966 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,363 psi | 63% | 2841 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 84% | 53,896 psi | 86% | 2884 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% | 52,924 psi | 85% | 2749 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,876 psi | 74% | 2680 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,353 psi | 71% | 2657 fps | 95.1% |
| Accurate 3100 | <<locked>> | 94% | 37,782 psi | 61% | 2618 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 43,410 psi | 70% | 2680 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,155 psi | 52% | 2503 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 48,762 psi | 78% | 2795 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 41,452 psi | 66% | 2641 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 98% | 50,372 psi | 81% | 2884 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,865 psi | 82% | 2799 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,156 psi | 84% | 2779 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,947 psi | 72% | 2841 fps | 99.1% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 50,299 psi | 81% | 2884 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 50,299 psi | 81% | 2884 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,437 psi | 66% | 2667 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,396 psi | 71% | 2733 fps | 99.1% |
| Alliant Reloder-16 | 53 gr | 80% | 32,213 psi | 52% | 2516 fps | 95% |
| Alliant Reloder-17 | 57.1 gr | 80% | 36,071 psi | 58% | 2644 fps | 98.3% |
| Alliant Reloder-19 | <<locked>> | 98% | 49,588 psi | 80% | 2874 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 88% | 30,052 psi | 48% | 2484 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 90% | 34,592 psi | 55% | 2661 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,399 psi | 78% | 2805 fps | 99.3% |
| Bofors RP3 | <<locked>> | 80% | 41,423 psi | 66% | 2674 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 44,672 psi | 72% | 2700 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,388 psi | 84% | 2782 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,386 psi | 81% | 2825 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,061 psi | 67% | 2680 fps | 97.7% |
| Hodgdon H414 | <<locked>> | 86% | 41,959 psi | 67% | 2726 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 88% | 48,486 psi | 78% | 2808 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 49,284 psi | 79% | 2805 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,762 psi | 48% | 2418 fps | 96% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,730 psi | 73% | 2785 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 44,541 psi | 71% | 2805 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,701 psi | 43% | 1598 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,340 psi | 76% | 2759 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 49,516 psi | 79% | 2795 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,555 psi | 70% | 2677 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,079 psi | 74% | 2703 fps | 96.5% |
| IMR 4350 | <<locked>> | 90% | 45,121 psi | 72% | 2733 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 43,642 psi | 70% | 2680 fps | 95.7% |
| IMR 4831 | <<locked>> | 82% | 33,344 psi | 53% | 2516 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 45,527 psi | 73% | 2762 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 50,865 psi | 82% | 2799 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,573 psi | 78% | 2776 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,443 psi | 78% | 2730 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 43,801 psi | 70% | 2684 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 38,319 psi | 61% | 2575 fps | 95.7% |
| Lovex S070 | <<locked>> | 86% | 41,394 psi | 66% | 2657 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 47,964 psi | 77% | 2746 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,167 psi | 77% | 2746 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,772 psi | 70% | 2720 fps | 99.3% |
| Norma 204 | <<locked>> | 94% | 51,372 psi | 82% | 2884 fps | 95.8% |
| Norma MRP | <<locked>> | 96% | 42,873 psi | 69% | 2822 fps | 95.4% |
| Norma URP | <<locked>> | 82% | 34,664 psi | 56% | 2562 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 43,729 psi | 70% | 2740 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 38,435 psi | 62% | 2657 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 50,923 psi | 82% | 2815 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,807 psi | 81% | 2835 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,180 psi | 44% | 1640 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,293 psi | 68% | 2661 fps | 96.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,427 psi | 76% | 2848 fps | 99.4% |
| ReloadSwiss RS 60 | 57.1 gr | 80% | 38,348 psi | 61% | 2710 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,287 psi | 55% | 2579 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 36,332 psi | 58% | 2641 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 51,880 psi | 83% | 2779 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,614 psi | 73% | 2700 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 38,943 psi | 62% | 2618 fps | 99% |
| Rottweil R 905 | <<locked>> | 98% | 48,457 psi | 78% | 2858 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 86% | 44,672 psi | 72% | 2700 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 82% | 38,319 psi | 61% | 2575 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,573 psi | 78% | 2776 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,801 psi | 70% | 2684 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 41,394 psi | 66% | 2657 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,972 psi | 64% | 2667 fps | 98.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,487 psi | 79% | 2792 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,326 psi | 76% | 2766 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,008 psi | 79% | 2690 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,075 psi | 66% | 2556 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,670 psi | 68% | 2621 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 47,993 psi | 77% | 2851 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 48,733 psi | 78% | 2690 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,255 psi | 79% | 2785 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 39,755 psi | 64% | 2625 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 29,066 psi | 47% | 2457 fps | 97.2% |
| Somchem S385 | <<locked>> | 94% | 43,207 psi | 69% | 2726 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 49,414 psi | 79% | 2677 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,440 psi | 73% | 2671 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,687 psi | 73% | 2680 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,695 psi | 60% | 2556 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 33,721 psi | 54% | 2507 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 51,140 psi | 82% | 2795 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,121 psi | 71% | 2671 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,286 psi | 53% | 2507 fps | 95% |
| Vihtavuori N555 | <<locked>> | 86% | 30,632 psi | 49% | 2503 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,388 psi | 54% | 2484 fps | 97.7% |
| Winchester 748 | <<locked>> | 80% | 51,445 psi | 82% | 2848 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 42,134 psi | 68% | 2730 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,282 psi | 45% | 2503 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,065 psi | 75% | 2772 fps | 99.8% |
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 99 powders for .300 H&H Mag. loaded with the .307 | 165gr | Rhino Penetrator. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,028 fps; across all powders the maximum-charge window runs from 1,791 fps to 3,028 fps. Accurate 3100 gives the best case fill at 100 %, and 99 of the 99 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 165.0 gr projectile in 0.307" calls for a 1:11.5 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. Alliant Reloder-17, ReloadSwiss RS 60, Alliant Reloder-16 rank at the top here: for .300 H&H Mag. with the .307 | 165gr | 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.