Load Specifications
Bullet Manufacturer:Berger
Bullet Weight:185 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 | 185gr | Berger Hybrid Target 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, Alliant Reloder-16 and Alliant Reloder-26.
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.
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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% | 56,376 psi | 90% | 2674 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,230 psi | 87% | 2690 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,111 psi | 82% | 2726 fps | 99.3% |
| Accurate 4064 | <<locked>> | 84% | 53,258 psi | 85% | 2680 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 53,722 psi | 86% | 2782 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 56,028 psi | 90% | 2923 fps | 97.5% |
| ADI AR 2206H | <<locked>> | 82% | 55,782 psi | 89% | 2753 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 53,577 psi | 86% | 2710 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,578 psi | 88% | 2818 fps | 97.9% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 52,402 psi | 84% | 2808 fps | 96.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,304 psi | 90% | 2884 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,288 psi | 87% | 2733 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,563 psi | 87% | 2756 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,302 psi | 87% | 2831 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,753 psi | 89% | 2861 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 53,911 psi | 86% | 2808 fps | 97.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,995 psi | 82% | 2805 fps | 97.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,124 psi | 77% | 2749 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,061 psi | 67% | 2667 fps | 98.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,056 psi | 88% | 2933 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,695 psi | 89% | 2772 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 46,717 psi | 75% | 2730 fps | 96.4% |
| Bofors RP3 | <<locked>> | 86% | 54,839 psi | 88% | 2746 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,995 psi | 82% | 2805 fps | 97.5% |
| Bofors RP7 | <<locked>> | 90% | 54,549 psi | 87% | 2733 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 86% | 55,506 psi | 89% | 2766 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 55,985 psi | 90% | 2831 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 90% | 55,970 psi | 90% | 2792 fps | 98.4% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 56,101 psi | 90% | 2812 fps | 96.3% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 55,027 psi | 88% | 2795 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,578 psi | 88% | 2759 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 53,069 psi | 85% | 2749 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 56,130 psi | 90% | 2871 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,303 psi | 58% | 1696 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 53,925 psi | 86% | 2713 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 53,069 psi | 85% | 2694 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,666 psi | 89% | 2726 fps | 99.2% |
| IMR 4350 | <<locked>> | 94% | 55,347 psi | 89% | 2766 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,217 psi | 90% | 2759 fps | 99.2% |
| IMR 4831 | <<locked>> | 94% | 54,099 psi | 87% | 2772 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 55,999 psi | 90% | 2782 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 54,201 psi | 87% | 2749 fps | 96.1% |
| Lovex D073.6 | <<locked>> | 82% | 56,246 psi | 90% | 2730 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,708 psi | 88% | 2680 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 53,229 psi | 85% | 2687 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,057 psi | 90% | 2756 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 53,954 psi | 87% | 2746 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,612 psi | 68% | 2585 fps | 97.9% |
| Norma 201 | <<locked>> | 82% | 54,563 psi | 87% | 2700 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,216 psi | 89% | 2697 fps | 100% |
| Norma 203B | <<locked>> | 84% | 53,853 psi | 86% | 2743 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,086 psi | 90% | 2815 fps | 98% |
| Norma MRPᴾ | <<locked>> | 100% | 54,114 psi | 87% | 2890 fps | 99.1% |
| Norma URP | <<locked>> | 94% | 55,927 psi | 90% | 2815 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 54,505 psi | 87% | 2769 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 49,937 psi | 80% | 2789 fps | 96% |
| Ramshot Hunter | <<locked>> | 94% | 54,781 psi | 88% | 2818 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 44,454 psi | 71% | 2671 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,869 psi | 59% | 1736 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,274 psi | 89% | 2749 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,259 psi | 89% | 2818 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,332 psi | 89% | 2854 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 53,330 psi | 86% | 2802 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,651 psi | 89% | 2884 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 40,915 psi | 66% | 2677 fps | 96.3% |
| Rottweil R 902 | <<locked>> | 84% | 55,187 psi | 88% | 2700 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,955 psi | 88% | 2743 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 52,910 psi | 85% | 2736 fps | 96.5% |
| Rottweil R 905 | <<locked>> | 98% | 53,069 psi | 85% | 2792 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 90% | 54,549 psi | 87% | 2733 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,057 psi | 90% | 2756 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,246 psi | 90% | 2730 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 53,229 psi | 85% | 2687 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 53,954 psi | 87% | 2746 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 52,997 psi | 85% | 2753 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,215 psi | 87% | 2726 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,434 psi | 89% | 2631 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,188 psi | 90% | 2635 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,970 psi | 90% | 2710 fps | 99.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 56,057 psi | 90% | 2841 fps | 98.3% |
| Somchem S335 | <<locked>> | 82% | 55,100 psi | 88% | 2628 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,100 psi | 88% | 2743 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 54,795 psi | 88% | 2733 fps | 96% |
| Somchem S365 | <<locked>> | 96% | 54,998 psi | 88% | 2818 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 53,693 psi | 86% | 2769 fps | 98.6% |
| Vihtavuori N133 | <<locked>> | 82% | 55,941 psi | 90% | 2612 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,564 psi | 89% | 2661 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,941 psi | 90% | 2677 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,202 psi | 90% | 2713 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,737 psi | 88% | 2762 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,414 psi | 79% | 2690 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 84% | 53,998 psi | 87% | 2674 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 53,708 psi | 86% | 2766 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,737 psi | 86% | 2818 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 54,607 psi | 88% | 2877 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,259 psi | 87% | 2733 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,985 psi | 90% | 2831 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,250 psi | 69% | 2795 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,288 psi | 87% | 2733 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,925 psi | 86% | 2766 fps | 97.7% |
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% | 49,676 psi | 80% | 2585 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,630 psi | 76% | 2585 fps | 97.3% |
| Accurate 3100 | <<locked>> | 88% | 34,171 psi | 55% | 2408 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 47,065 psi | 75% | 2589 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,621 psi | 57% | 2454 fps | 97.6% |
| Accurate High Country | <<locked>> | 94% | 45,455 psi | 73% | 2743 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 52,547 psi | 84% | 2707 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,628 psi | 72% | 2562 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 45,005 psi | 72% | 2651 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 98% | 48,921 psi | 78% | 2746 fps | 95.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,878 psi | 78% | 2766 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,933 psi | 72% | 2589 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,051 psi | 77% | 2654 fps | 99.9% |
| Alliant Reloder-16 | 52.5 gr | 80% | 34,983 psi | 56% | 2464 fps | 97.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,349 psi | 63% | 2585 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 44,628 psi | 72% | 2644 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 94% | 41,800 psi | 67% | 2635 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,541 psi | 41% | 2224 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 92% | 32,692 psi | 52% | 2441 fps | 95% |
| Alliant Reloder-26 | 60.8 gr | 84% | 30,995 psi | 50% | 2441 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,228 psi | 84% | 2720 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 43,888 psi | 70% | 2674 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 45,223 psi | 73% | 2598 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 41,800 psi | 67% | 2635 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 39,958 psi | 64% | 2470 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 45,455 psi | 73% | 2605 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 37,594 psi | 60% | 2500 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 82% | 43,250 psi | 69% | 2572 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 98% | 52,373 psi | 84% | 2756 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 98% | 51,329 psi | 82% | 2736 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,416 psi | 52% | 2362 fps | 98.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,632 psi | 80% | 2697 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 39,146 psi | 63% | 2562 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,195 psi | 44% | 1516 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,705 psi | 81% | 2664 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,891 psi | 75% | 2595 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,168 psi | 79% | 2621 fps | 98.3% |
| IMR 4350 | <<locked>> | 84% | 40,495 psi | 65% | 2507 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,263 psi | 66% | 2500 fps | 96.4% |
| IMR 4831 | <<locked>> | 80% | 34,272 psi | 55% | 2408 fps | 97.3% |
| IMR 4895 | <<locked>> | 80% | 49,298 psi | 79% | 2680 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 51,010 psi | 82% | 2697 fps | 95.4% |
| Lovex D073.6 | <<locked>> | 80% | 52,605 psi | 84% | 2680 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,547 psi | 83% | 2631 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,079 psi | 75% | 2592 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,870 psi | 62% | 2454 fps | 97.2% |
| Lovex S070 | <<locked>> | 80% | 37,101 psi | 59% | 2434 fps | 95.5% |
| Lovex S071 | <<locked>> | 94% | 35,215 psi | 56% | 2434 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 51,314 psi | 82% | 2651 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,953 psi | 83% | 2651 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,427 psi | 76% | 2641 fps | 100% |
| Norma 204 | <<locked>> | 86% | 42,743 psi | 69% | 2589 fps | 95% |
| Norma MRP | <<locked>> | 90% | 38,261 psi | 61% | 2589 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 35,563 psi | 57% | 2451 fps | 97.5% |
| Ramshot Big Game | <<locked>> | 80% | 47,529 psi | 76% | 2661 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 46,485 psi | 75% | 2726 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 34,360 psi | 55% | 2431 fps | 95.2% |
| Ramshot Magnum | <<locked>> | 98% | 41,423 psi | 66% | 2612 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,586 psi | 44% | 1552 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,527 psi | 73% | 2589 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,634 psi | 83% | 2762 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,814 psi | 67% | 2638 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,128 psi | 56% | 2467 fps | 97.2% |
| ReloadSwiss RS 70 | 57.4 gr | 80% | 34,461 psi | 55% | 2474 fps | 96.4% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 38,087 psi | 61% | 2612 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 48,849 psi | 78% | 2605 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,511 psi | 68% | 2546 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 46,717 psi | 75% | 2631 fps | 95% |
| Rottweil R 905 | <<locked>> | 92% | 43,540 psi | 70% | 2628 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 39,958 psi | 64% | 2470 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,870 psi | 62% | 2454 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,605 psi | 84% | 2680 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,079 psi | 75% | 2592 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,101 psi | 59% | 2434 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,468 psi | 70% | 2595 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,836 psi | 82% | 2677 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,083 psi | 84% | 2585 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,947 psi | 70% | 2461 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,029 psi | 61% | 2402 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 43,134 psi | 69% | 2621 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 51,953 psi | 83% | 2589 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,888 psi | 69% | 2546 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 51,097 psi | 82% | 2674 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 32,039 psi | 51% | 2408 fps | 99.3% |
| Somchem S385 | <<locked>> | 88% | 38,798 psi | 62% | 2503 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 52,605 psi | 84% | 2569 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,936 psi | 78% | 2569 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,284 psi | 79% | 2585 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,944 psi | 66% | 2480 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,956 psi | 59% | 2451 fps | 97.8% |
| Vihtavuori N165 | <<locked>> | 94% | 40,654 psi | 65% | 2533 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 47,427 psi | 76% | 2579 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,318 psi | 58% | 2451 fps | 97.5% |
| Vihtavuori N555 | <<locked>> | 80% | 27,804 psi | 45% | 2300 fps | 95.2% |
| Vihtavuori N560 | <<locked>> | 98% | 51,039 psi | 82% | 2818 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,158 psi | 58% | 2425 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 37,594 psi | 60% | 2500 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 84% | 25,585 psi | 41% | 2300 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,821 psi | 81% | 2684 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 43,642 psi | 70% | 2592 fps | 95.4% |
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 .308 | 185gr | Berger Hybrid Target. Alliant Reloder-26 delivers the highest muzzle velocity at 2,933 fps; across all powders the maximum-charge window runs from 1,696 fps to 2,933 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 185.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, ADI AR 2213 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, Alliant Reloder-26 rank at the top here: for .300 H&H Mag. with the .308 | 185gr | Berger Hybrid Target 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.