Load Specifications
Bullet Manufacturer:Sierra
Bullet Weight:200 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 | 200gr | Sierra Hollow Point Boat Tail bullet and 90 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% | 55,898 psi | 90% | 2559 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 53,432 psi | 86% | 2585 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,679 psi | 88% | 2680 fps | 99.9% |
| Accurate 4064 | <<locked>> | 84% | 56,289 psi | 90% | 2612 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 53,272 psi | 85% | 2671 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 55,840 psi | 90% | 2818 fps | 98.2% |
| Accurate MAGPRO | <<locked>> | 98% | 52,924 psi | 85% | 2759 fps | 96.3% |
| ADI AR 2208 | <<locked>> | 86% | 56,260 psi | 90% | 2644 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,230 psi | 87% | 2713 fps | 98.6% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,347 psi | 89% | 2762 fps | 97.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,419 psi | 89% | 2759 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 54,215 psi | 87% | 2710 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 53,650 psi | 86% | 2621 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 53,853 psi | 86% | 2638 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 53,969 psi | 87% | 2720 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,376 psi | 89% | 2746 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 53,490 psi | 86% | 2700 fps | 98.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,230 psi | 87% | 2759 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,271 psi | 82% | 2690 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,570 psi | 71% | 2628 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 98% | 55,100 psi | 88% | 2828 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,893 psi | 80% | 2690 fps | 98% |
| Bofors RP3 | <<locked>> | 84% | 54,302 psi | 87% | 2635 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,230 psi | 87% | 2759 fps | 98.8% |
| Bofors RP7 | <<locked>> | 88% | 53,751 psi | 86% | 2625 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 84% | 54,607 psi | 88% | 2651 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 55,434 psi | 89% | 2723 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 88% | 55,187 psi | 88% | 2680 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 98% | 55,550 psi | 89% | 2710 fps | 97.1% |
| Hodgdon H4831 SC | <<locked>> | 98% | 54,462 psi | 87% | 2694 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,259 psi | 87% | 2651 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,912 psi | 90% | 2680 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,816 psi | 70% | 2664 fps | 97.4% |
| Hodgdon Superformance | <<locked>> | 90% | 55,419 psi | 89% | 2756 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,521 psi | 59% | 1631 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,767 psi | 89% | 2628 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,694 psi | 88% | 2612 fps | 99.5% |
| IMR 4350 | <<locked>> | 92% | 54,607 psi | 88% | 2654 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,405 psi | 89% | 2651 fps | 99.5% |
| IMR 4831 | <<locked>> | 92% | 53,606 psi | 86% | 2664 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,245 psi | 89% | 2664 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 53,766 psi | 86% | 2648 fps | 96.9% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,823 psi | 85% | 2736 fps | 97.4% |
| Lovex S062 | <<locked>> | 84% | 55,941 psi | 90% | 2621 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,448 psi | 89% | 2644 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 53,447 psi | 86% | 2641 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,600 psi | 73% | 2543 fps | 99.1% |
| Norma 203B | <<locked>> | 82% | 53,200 psi | 85% | 2628 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,463 psi | 89% | 2710 fps | 98.6% |
| Norma MRP | <<locked>> | 98% | 53,838 psi | 86% | 2782 fps | 99.6% |
| Norma URP | <<locked>> | 92% | 55,637 psi | 89% | 2707 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 53,577 psi | 86% | 2648 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,098 psi | 85% | 2753 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 92% | 54,418 psi | 87% | 2713 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,369 psi | 76% | 2635 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,130 psi | 60% | 1670 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,636 psi | 88% | 2638 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,897 psi | 88% | 2736 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 53,069 psi | 85% | 2694 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,303 psi | 89% | 2776 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,584 psi | 70% | 2654 fps | 98.3% |
| Rottweil R 902 | <<locked>> | 82% | 54,476 psi | 87% | 2585 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,433 psi | 87% | 2631 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,869 psi | 90% | 2687 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 96% | 52,707 psi | 85% | 2687 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 53,751 psi | 86% | 2625 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,448 psi | 89% | 2644 fps | 99.9% |
| Shooters World Precision | <<locked>> | 84% | 55,941 psi | 90% | 2621 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 53,447 psi | 86% | 2641 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,883 psi | 90% | 2687 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,376 psi | 89% | 2520 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,940 psi | 88% | 2602 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,970 psi | 90% | 2740 fps | 98.9% |
| Somchem S355 | <<locked>> | 86% | 54,447 psi | 87% | 2628 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,012 psi | 87% | 2631 fps | 96.7% |
| Somchem S365 | <<locked>> | 94% | 54,824 psi | 88% | 2707 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 53,374 psi | 86% | 2667 fps | 99.1% |
| Vihtavuori N135 | <<locked>> | 82% | 54,868 psi | 88% | 2543 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,085 psi | 88% | 2562 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,550 psi | 89% | 2602 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,099 psi | 87% | 2651 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,678 psi | 84% | 2644 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 82% | 53,243 psi | 85% | 2559 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 53,185 psi | 85% | 2657 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 53,983 psi | 87% | 2717 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 54,201 psi | 87% | 2776 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 53,577 psi | 86% | 2621 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,434 psi | 89% | 2723 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,441 psi | 74% | 2753 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 53,476 psi | 86% | 2664 fps | 98.4% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 52,489 psi | 84% | 2516 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,067 psi | 80% | 2533 fps | 98.5% |
| Accurate 3100 | <<locked>> | 84% | 31,894 psi | 51% | 2270 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 49,748 psi | 80% | 2526 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,869 psi | 61% | 2411 fps | 98.9% |
| Accurate High Country | <<locked>> | 90% | 42,250 psi | 68% | 2585 fps | 95% |
| Accurate MAGPRO | <<locked>> | 96% | 49,385 psi | 79% | 2700 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 46,818 psi | 75% | 2507 fps | 100% |
| ADI AR 2209 | <<locked>> | 88% | 41,901 psi | 67% | 2500 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 94% | 45,455 psi | 73% | 2595 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,677 psi | 83% | 2707 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 39,262 psi | 63% | 2444 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,398 psi | 76% | 2526 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,401 psi | 81% | 2589 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,883 psi | 59% | 2418 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,698 psi | 67% | 2533 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 38,856 psi | 62% | 2441 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 90% | 39,102 psi | 63% | 2490 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,151 psi | 44% | 2198 fps | 97.1% |
| Alliant Reloder-25 | <<locked>> | 88% | 30,719 psi | 49% | 2310 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 28,790 psi | 46% | 2297 fps | 95.4% |
| Bofors RP15 | <<locked>> | 94% | 41,089 psi | 66% | 2530 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 47,659 psi | 76% | 2539 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 39,102 psi | 63% | 2490 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 41,829 psi | 67% | 2421 fps | 97% |
| Hodgdon H380 | <<locked>> | 80% | 47,964 psi | 77% | 2549 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 39,798 psi | 64% | 2454 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 80% | 42,743 psi | 69% | 2474 fps | 96.6% |
| Hodgdon H4831 | <<locked>> | 94% | 48,660 psi | 78% | 2602 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 94% | 47,703 psi | 76% | 2585 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,505 psi | 55% | 2320 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,330 psi | 84% | 2631 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 38,566 psi | 62% | 2546 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 38,595 psi | 62% | 2464 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,296 psi | 44% | 1457 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,269 psi | 79% | 2533 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,474 psi | 83% | 2566 fps | 99.2% |
| IMR 4350 | <<locked>> | 80% | 37,507 psi | 60% | 2356 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,337 psi | 69% | 2451 fps | 97.8% |
| IMR 4831 | <<locked>> | 80% | 36,506 psi | 59% | 2369 fps | 98.6% |
| IMR 4895 | <<locked>> | 80% | 51,721 psi | 83% | 2612 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 47,398 psi | 76% | 2546 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 96% | 46,253 psi | 74% | 2621 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 49,487 psi | 79% | 2530 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,930 psi | 66% | 2405 fps | 98.4% |
| Lovex S070 | <<locked>> | 80% | 39,204 psi | 63% | 2392 fps | 97.1% |
| Lovex S071 | <<locked>> | 88% | 31,111 psi | 50% | 2251 fps | 95.1% |
| Norma 203B | <<locked>> | 80% | 49,763 psi | 80% | 2575 fps | 100% |
| Norma 204 | <<locked>> | 82% | 39,610 psi | 64% | 2434 fps | 95% |
| Norma MRP | <<locked>> | 86% | 35,636 psi | 57% | 2441 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 37,797 psi | 61% | 2408 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 80% | 50,125 psi | 80% | 2598 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 43,076 psi | 69% | 2575 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 36,564 psi | 59% | 2395 fps | 97% |
| Ramshot Magnum | <<locked>> | 94% | 38,261 psi | 61% | 2461 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,920 psi | 45% | 1493 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,008 psi | 77% | 2536 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,309 psi | 71% | 2579 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,652 psi | 60% | 2428 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,448 psi | 58% | 2434 fps | 98.1% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 35,476 psi | 57% | 2467 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 51,213 psi | 82% | 2539 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,005 psi | 72% | 2490 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 43,294 psi | 69% | 2477 fps | 95% |
| Rottweil R 905 | <<locked>> | 88% | 40,495 psi | 65% | 2477 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 41,829 psi | 67% | 2421 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,930 psi | 66% | 2405 fps | 98.4% |
| Shooters World Precision | <<locked>> | 80% | 49,487 psi | 79% | 2530 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,204 psi | 63% | 2392 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,035 psi | 74% | 2539 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,064 psi | 74% | 2395 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,074 psi | 64% | 2356 fps | 97.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 40,147 psi | 64% | 2470 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 45,252 psi | 73% | 2487 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 47,239 psi | 76% | 2523 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 34,113 psi | 55% | 2365 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 36,172 psi | 58% | 2359 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 51,488 psi | 83% | 2500 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,808 psi | 83% | 2516 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,250 psi | 69% | 2421 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,030 psi | 63% | 2402 fps | 99% |
| Vihtavuori N165 | <<locked>> | 90% | 37,898 psi | 61% | 2388 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 49,922 psi | 80% | 2513 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,551 psi | 62% | 2405 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 80% | 29,936 psi | 48% | 2267 fps | 97.2% |
| Vihtavuori N560 | <<locked>> | 94% | 47,340 psi | 76% | 2661 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,130 psi | 61% | 2375 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 39,987 psi | 64% | 2457 fps | 97.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 23,946 psi | 38% | 2172 fps | 95.8% |
| Winchester Supreme 780 | <<locked>> | 90% | 40,538 psi | 65% | 2448 fps | 95.5% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 90 powders for .300 H&H Mag. loaded with the .308 | 200gr | Sierra Hollow Point Boat Tail. Alliant Reloder-26 delivers the highest muzzle velocity at 2,828 fps; across all powders the maximum-charge window runs from 1,631 fps to 2,828 fps. Accurate 3100 gives the best case fill at 100 %, and 90 of the 90 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.308" calls for a 1:11.5 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.