Load Specifications
Bullet Manufacturer:Norma
Bullet Weight:180 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:1:14.0
Load data in caliber .300 H&H Mag. with .308 | 180gr | Norma PlastSpitz bullet and 93 powders. The key underlying parameters are shown in the table above.
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>> | 82% | 54,259 psi | 87% | 2694 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,579 psi | 89% | 2762 fps | 98.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,982 psi | 85% | 2802 fps | 99.5% |
| Accurate 4064 | <<locked>> | 84% | 54,694 psi | 88% | 2746 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,158 psi | 88% | 2851 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 54,070 psi | 87% | 2936 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 86% | 54,752 psi | 88% | 2779 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 56,260 psi | 90% | 2894 fps | 98.2% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,969 psi | 87% | 2884 fps | 96.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 53,998 psi | 87% | 2897 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,506 psi | 89% | 2802 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,796 psi | 89% | 2822 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,912 psi | 90% | 2907 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 53,635 psi | 86% | 2877 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,564 psi | 89% | 2881 fps | 98.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,750 psi | 85% | 2884 fps | 97.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,835 psi | 80% | 2818 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,323 psi | 69% | 2740 fps | 98.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 53,185 psi | 85% | 2953 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,196 psi | 77% | 2802 fps | 96.8% |
| Bofors RP3 | <<locked>> | 84% | 52,750 psi | 85% | 2766 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,750 psi | 85% | 2884 fps | 97.9% |
| Bofors RP7 | <<locked>> | 90% | 55,883 psi | 90% | 2805 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 84% | 53,272 psi | 85% | 2782 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 53,911 psi | 86% | 2848 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 88% | 53,766 psi | 86% | 2808 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 98% | 54,070 psi | 87% | 2831 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 56,434 psi | 90% | 2831 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,520 psi | 87% | 2818 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 53,766 psi | 86% | 2881 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,405 psi | 58% | 1739 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,245 psi | 89% | 2782 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,404 psi | 87% | 2762 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 53,577 psi | 86% | 2746 fps | 98.9% |
| IMR 4350 | <<locked>> | 92% | 53,272 psi | 85% | 2782 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,085 psi | 87% | 2779 fps | 98.9% |
| IMR 4831 | <<locked>> | 94% | 55,622 psi | 89% | 2844 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 53,795 psi | 86% | 2799 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 55,738 psi | 89% | 2822 fps | 96.5% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 51,329 psi | 82% | 2854 fps | 96% |
| Lovex S060 | <<locked>> | 82% | 55,825 psi | 90% | 2746 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,534 psi | 87% | 2756 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,172 psi | 87% | 2776 fps | 99.7% |
| Lovex S070 | <<locked>> | 92% | 55,201 psi | 89% | 2815 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,135 psi | 71% | 2654 fps | 98.2% |
| Norma 201 | <<locked>> | 82% | 55,738 psi | 89% | 2766 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,405 psi | 90% | 2762 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,085 psi | 88% | 2808 fps | 100% |
| Norma 204 | <<locked>> | 92% | 53,896 psi | 86% | 2831 fps | 97.6% |
| Norma MRPᴾ | <<locked>> | 100% | 56,043 psi | 90% | 2966 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 53,896 psi | 86% | 2835 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 55,927 psi | 90% | 2835 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,387 psi | 82% | 2864 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 94% | 56,318 psi | 90% | 2890 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,876 psi | 74% | 2743 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,956 psi | 59% | 1778 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 53,272 psi | 85% | 2766 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 53,098 psi | 85% | 2871 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,955 psi | 88% | 2874 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 53,621 psi | 86% | 2900 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,322 psi | 68% | 2756 fps | 96.8% |
| Rottweil R 902 | <<locked>> | 82% | 53,127 psi | 85% | 2720 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 56,362 psi | 90% | 2812 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,433 psi | 87% | 2808 fps | 96.8% |
| Rottweil R 905 | <<locked>> | 98% | 54,810 psi | 88% | 2867 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 90% | 55,883 psi | 90% | 2805 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,172 psi | 87% | 2776 fps | 99.7% |
| Shooters World Precision | <<locked>> | 84% | 54,534 psi | 87% | 2756 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,201 psi | 89% | 2815 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,462 psi | 87% | 2822 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,608 psi | 89% | 2795 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,128 psi | 87% | 2654 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 53,795 psi | 86% | 2730 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,317 psi | 87% | 2864 fps | 98.1% |
| Somchem S335 | <<locked>> | 82% | 56,217 psi | 90% | 2694 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 53,040 psi | 85% | 2759 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 56,231 psi | 90% | 2802 fps | 96.3% |
| Somchem S365 | <<locked>> | 94% | 53,127 psi | 85% | 2838 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,332 psi | 89% | 2841 fps | 98.8% |
| Vihtavuori N135 | <<locked>> | 82% | 53,316 psi | 85% | 2680 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 53,722 psi | 86% | 2697 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,099 psi | 87% | 2736 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 56,014 psi | 90% | 2831 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,140 psi | 82% | 2762 fps | 97.9% |
| Vihtavuori N540 | <<locked>> | 84% | 55,274 psi | 89% | 2740 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,317 psi | 89% | 2838 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,637 psi | 89% | 2894 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 52,620 psi | 84% | 2894 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,840 psi | 90% | 2799 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,099 psi | 87% | 2851 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,889 psi | 72% | 2874 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,593 psi | 89% | 2802 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,564 psi | 89% | 2838 fps | 98% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 50,850 psi | 82% | 2648 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,675 psi | 78% | 2651 fps | 97.5% |
| Accurate 3100 | <<locked>> | 88% | 35,215 psi | 56% | 2470 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 48,196 psi | 77% | 2651 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,709 psi | 59% | 2520 fps | 97.9% |
| Accurate High Country | <<locked>> | 94% | 46,876 psi | 75% | 2812 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 45,556 psi | 73% | 2628 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 43,381 psi | 70% | 2664 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 98% | 50,343 psi | 81% | 2822 fps | 95.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,328 psi | 81% | 2838 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,137 psi | 74% | 2654 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,197 psi | 79% | 2720 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,839 psi | 57% | 2526 fps | 98% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,437 psi | 65% | 2648 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 42,888 psi | 69% | 2654 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 94% | 43,178 psi | 69% | 2707 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,208 psi | 42% | 2283 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,707 psi | 54% | 2510 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 84% | 31,966 psi | 51% | 2507 fps | 95.7% |
| Bofors RP15 | <<locked>> | 96% | 42,366 psi | 68% | 2687 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 46,340 psi | 74% | 2664 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 43,178 psi | 69% | 2707 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 40,799 psi | 65% | 2533 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 46,717 psi | 75% | 2674 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 80% | 38,537 psi | 62% | 2562 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 80% | 41,640 psi | 67% | 2585 fps | 95.2% |
| Hodgdon H4831 | <<locked>> | 96% | 50,401 psi | 81% | 2769 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,301 psi | 53% | 2425 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,908 psi | 82% | 2766 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 40,364 psi | 65% | 2631 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,122 psi | 43% | 1552 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,851 psi | 83% | 2733 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,921 psi | 77% | 2661 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,140 psi | 80% | 2687 fps | 98.4% |
| IMR 4350 | <<locked>> | 82% | 38,972 psi | 62% | 2516 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,250 psi | 68% | 2566 fps | 96.7% |
| IMR 4831 | <<locked>> | 80% | 35,273 psi | 57% | 2474 fps | 97.5% |
| IMR 4895 | <<locked>> | 80% | 50,473 psi | 81% | 2749 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 52,344 psi | 84% | 2766 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 98% | 48,066 psi | 77% | 2792 fps | 95.1% |
| Lovex S060 | <<locked>> | 80% | 52,475 psi | 84% | 2697 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,095 psi | 77% | 2657 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,682 psi | 64% | 2516 fps | 97.4% |
| Lovex S070 | <<locked>> | 80% | 38,072 psi | 61% | 2497 fps | 95.8% |
| Lovex S071 | <<locked>> | 92% | 34,055 psi | 55% | 2444 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 52,344 psi | 84% | 2717 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,214 psi | 85% | 2717 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,573 psi | 78% | 2707 fps | 100% |
| Norma 204 | <<locked>> | 86% | 43,947 psi | 70% | 2657 fps | 95.3% |
| Norma MRP | <<locked>> | 90% | 39,610 psi | 64% | 2661 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 36,593 psi | 59% | 2513 fps | 97.7% |
| Ramshot Big Game | <<locked>> | 80% | 48,834 psi | 78% | 2726 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 48,008 psi | 77% | 2802 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 35,360 psi | 57% | 2497 fps | 95.5% |
| Ramshot Magnum | <<locked>> | 98% | 42,656 psi | 68% | 2680 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,673 psi | 44% | 1591 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,615 psi | 75% | 2654 fps | 98.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,989 psi | 69% | 2703 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,405 psi | 58% | 2533 fps | 97.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 35,491 psi | 57% | 2539 fps | 96.7% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 39,349 psi | 63% | 2684 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 49,908 psi | 80% | 2667 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,671 psi | 70% | 2612 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 47,877 psi | 77% | 2697 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 90% | 41,887 psi | 67% | 2638 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 40,799 psi | 65% | 2533 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,682 psi | 64% | 2516 fps | 97.4% |
| Shooters World Precision | <<locked>> | 80% | 48,095 psi | 77% | 2657 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,072 psi | 61% | 2497 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,628 psi | 72% | 2661 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,054 psi | 83% | 2743 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,962 psi | 72% | 2523 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,914 psi | 62% | 2461 fps | 95.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 41,495 psi | 67% | 2631 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 52,895 psi | 85% | 2648 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,859 psi | 70% | 2608 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 52,620 psi | 84% | 2746 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 33,025 psi | 53% | 2470 fps | 99.4% |
| Somchem S385 | <<locked>> | 88% | 39,987 psi | 64% | 2569 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 80% | 50,198 psi | 80% | 2635 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,473 psi | 81% | 2651 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,032 psi | 67% | 2543 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,971 psi | 61% | 2513 fps | 98% |
| Vihtavuori N165 | <<locked>> | 94% | 42,018 psi | 67% | 2602 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 48,660 psi | 78% | 2644 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,376 psi | 60% | 2513 fps | 97.7% |
| Vihtavuori N555 | <<locked>> | 80% | 28,805 psi | 46% | 2359 fps | 95.6% |
| Vihtavuori N560 | <<locked>> | 96% | 49,095 psi | 79% | 2831 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,130 psi | 60% | 2487 fps | 99.5% |
| Winchester 760 | <<locked>> | 80% | 38,740 psi | 62% | 2566 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,324 psi | 42% | 2365 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,996 psi | 83% | 2749 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,150 psi | 72% | 2667 fps | 95.8% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 93 powders for .300 H&H Mag. loaded with the .308 | 180gr | Norma PlastSpitz. Norma MRP delivers the highest muzzle velocity at 2,966 fps; across all powders the maximum-charge window runs from 1,739 fps to 2,966 fps. Accurate 3100 gives the best case fill at 100 %, and 93 of the 93 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 180.0 gr projectile in 0.308" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.