Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 210gr | Berger LRBTHP bullet and 88 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate High Country and Norma MRP.
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 2700 | <<locked>> | 82% | 54,810 psi | 88% | 2543 fps | 99.4% |
| Accurate 3100 | <<locked>> | 98% | 53,185 psi | 85% | 2595 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 54,694 psi | 88% | 2523 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,434 psi | 89% | 2635 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 54,244 psi | 87% | 2730 fps | 98.4% |
| Accurate MAGPRO | <<locked>> | 98% | 55,201 psi | 89% | 2730 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 84% | 54,505 psi | 87% | 2559 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,028 psi | 90% | 2680 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 98% | 53,664 psi | 86% | 2680 fps | 97.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 36,970 psi | 59% | 2425 fps | 96.9% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 56,275 psi | 90% | 2680 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,361 psi | 89% | 2575 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,521 psi | 89% | 2598 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,043 psi | 90% | 2684 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 53,519 psi | 86% | 2654 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,579 psi | 89% | 2671 fps | 99.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,391 psi | 90% | 2726 fps | 99.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,592 psi | 86% | 2654 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,514 psi | 75% | 2605 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 53,664 psi | 86% | 2740 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,822 psi | 83% | 2657 fps | 98.7% |
| Bofors RP3 | <<locked>> | 84% | 56,188 psi | 90% | 2592 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 42,235 psi | 68% | 2530 fps | 96.1% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,391 psi | 90% | 2726 fps | 99.3% |
| Bofors RP7 | <<locked>> | 88% | 55,434 psi | 89% | 2589 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,093 psi | 74% | 2546 fps | 97.1% |
| Hodgdon H380 | <<locked>> | 84% | 56,405 psi | 90% | 2612 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 53,809 psi | 86% | 2635 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 86% | 53,388 psi | 86% | 2592 fps | 99% |
| Hodgdon H4831 | <<locked>> | 96% | 53,896 psi | 86% | 2625 fps | 97.3% |
| Hodgdon H4831 SC | <<locked>> | 98% | 56,333 psi | 90% | 2661 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 56,405 psi | 90% | 2612 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,513 psi | 73% | 2644 fps | 98.4% |
| Hodgdon Superformance | <<locked>> | 88% | 53,650 psi | 86% | 2667 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,709 psi | 59% | 1594 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 53,954 psi | 87% | 2539 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,217 psi | 90% | 2572 fps | 99.8% |
| IMR 4350 | <<locked>> | 90% | 53,127 psi | 85% | 2575 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 53,505 psi | 86% | 2559 fps | 99.6% |
| IMR 4831 | <<locked>> | 92% | 55,680 psi | 89% | 2625 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,347 psi | 89% | 2612 fps | 97.7% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,781 psi | 88% | 2710 fps | 98.2% |
| Lovex S062 | <<locked>> | 82% | 54,201 psi | 87% | 2533 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 53,853 psi | 86% | 2559 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 54,998 psi | 88% | 2598 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,384 psi | 76% | 2510 fps | 99.6% |
| Norma 203B | <<locked>> | 82% | 54,824 psi | 88% | 2585 fps | 100% |
| Norma 204 | <<locked>> | 90% | 53,461 psi | 86% | 2618 fps | 98.7% |
| Norma MRP | <<locked>> | 98% | 56,144 psi | 90% | 2753 fps | 99.9% |
| Norma URP | <<locked>> | 90% | 53,925 psi | 86% | 2618 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,390 psi | 89% | 2608 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,201 psi | 89% | 2726 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 92% | 56,246 psi | 90% | 2674 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,385 psi | 79% | 2612 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,362 psi | 60% | 1631 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,101 psi | 90% | 2598 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 52,982 psi | 85% | 2641 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,027 psi | 88% | 2654 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 53,490 psi | 86% | 2684 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,368 psi | 73% | 2638 fps | 99.2% |
| Rottweil R 902 | <<locked>> | 82% | 55,999 psi | 90% | 2539 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,318 psi | 90% | 2589 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,331 psi | 87% | 2605 fps | 98.1% |
| Rottweil R 905 | <<locked>> | 96% | 54,839 psi | 88% | 2657 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 88% | 55,434 psi | 89% | 2589 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 88% | 53,853 psi | 86% | 2559 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 54,201 psi | 87% | 2533 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,998 psi | 88% | 2598 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,143 psi | 87% | 2598 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 53,722 psi | 86% | 2434 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 53,316 psi | 85% | 2520 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,375 psi | 87% | 2654 fps | 99.1% |
| Somchem S355 | <<locked>> | 86% | 56,188 psi | 90% | 2585 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 55,724 psi | 89% | 2598 fps | 97.6% |
| Somchem S365 | <<locked>> | 92% | 53,548 psi | 86% | 2621 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,506 psi | 89% | 2638 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 86% | 53,882 psi | 86% | 2516 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,101 psi | 90% | 2612 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,592 psi | 88% | 2612 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 82% | 54,853 psi | 88% | 2516 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,129 psi | 88% | 2621 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 56,057 psi | 90% | 2677 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 56,289 psi | 90% | 2743 fps | 98.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 48,182 psi | 77% | 2608 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,361 psi | 89% | 2579 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 53,809 psi | 86% | 2635 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,037 psi | 79% | 2723 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,463 psi | 89% | 2631 fps | 99% |
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 2700 | <<locked>> | 80% | 51,561 psi | 83% | 2497 fps | 99% |
| Accurate 3100 | <<locked>> | 82% | 31,183 psi | 50% | 2198 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 51,358 psi | 82% | 2480 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,407 psi | 63% | 2382 fps | 99.4% |
| Accurate High Country | 61 gr | 88% | 41,191 psi | 66% | 2503 fps | 95.3% |
| Accurate MAGPRO | <<locked>> | 94% | 48,008 psi | 77% | 2618 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 48,153 psi | 77% | 2464 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 38,072 psi | 61% | 2369 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 92% | 44,063 psi | 71% | 2513 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 98% | 34,780 psi | 56% | 2372 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 38,218 psi | 61% | 2369 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,907 psi | 78% | 2487 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,953 psi | 83% | 2546 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,334 psi | 61% | 2392 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,352 psi | 70% | 2500 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 37,840 psi | 61% | 2362 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 88% | 38,043 psi | 61% | 2411 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,210 psi | 45% | 2178 fps | 98.2% |
| Alliant Reloder-25 | <<locked>> | 86% | 29,863 psi | 48% | 2238 fps | 95.7% |
| Alliant Reloder-26 | 57.1 gr | 80% | 30,008 psi | 48% | 2280 fps | 96.8% |
| Bofors RP15 | <<locked>> | 90% | 37,550 psi | 60% | 2398 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 49,284 psi | 79% | 2497 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 39,639 psi | 64% | 2477 fps | 95.2% |
| Bofors RP5 | <<locked>> | 88% | 38,043 psi | 61% | 2411 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 43,323 psi | 69% | 2392 fps | 97.9% |
| Hodgdon H1000 | <<locked>> | 96% | 40,292 psi | 65% | 2434 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 49,530 psi | 79% | 2513 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 41,263 psi | 66% | 2425 fps | 98% |
| Hodgdon H4350 | <<locked>> | 80% | 44,164 psi | 71% | 2441 fps | 97.4% |
| Hodgdon H4831 | <<locked>> | 90% | 44,034 psi | 71% | 2464 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 92% | 46,238 psi | 74% | 2503 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,853 psi | 57% | 2290 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 94% | 37,550 psi | 60% | 2470 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 40,118 psi | 64% | 2438 fps | 97.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,427 psi | 44% | 1421 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,676 psi | 81% | 2493 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,881 psi | 85% | 2526 fps | 99.6% |
| IMR 4350 | <<locked>> | 80% | 38,899 psi | 62% | 2329 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,585 psi | 71% | 2415 fps | 98.5% |
| IMR 4831 | <<locked>> | 80% | 37,869 psi | 61% | 2339 fps | 99.2% |
| IMR 4955 Enduron | <<locked>> | 90% | 46,108 psi | 74% | 2467 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 92% | 42,148 psi | 68% | 2490 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 50,981 psi | 82% | 2487 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,177 psi | 68% | 2372 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 40,480 psi | 65% | 2359 fps | 97.9% |
| Lovex S071 | <<locked>> | 86% | 30,385 psi | 49% | 2178 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 51,314 psi | 82% | 2536 fps | 100% |
| Norma 204 | <<locked>> | 80% | 38,334 psi | 61% | 2356 fps | 95.2% |
| Norma MRP | 58.2 gr | 84% | 34,693 psi | 56% | 2365 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 39,204 psi | 63% | 2379 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 80% | 51,866 psi | 83% | 2562 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 41,655 psi | 67% | 2493 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 37,971 psi | 61% | 2369 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 92% | 37,057 psi | 59% | 2385 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,079 psi | 45% | 1457 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,516 psi | 79% | 2500 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,050 psi | 74% | 2543 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,218 psi | 63% | 2402 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,840 psi | 61% | 2408 fps | 98.9% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 34,476 psi | 55% | 2395 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 52,649 psi | 84% | 2493 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,586 psi | 75% | 2451 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 42,090 psi | 67% | 2398 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 84% | 36,999 psi | 59% | 2349 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 43,323 psi | 69% | 2392 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,177 psi | 68% | 2372 fps | 99% |
| Shooters World Precision | <<locked>> | 80% | 50,981 psi | 82% | 2487 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,480 psi | 65% | 2359 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,630 psi | 76% | 2503 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,587 psi | 76% | 2356 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,307 psi | 66% | 2326 fps | 98% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 36,651 psi | 59% | 2343 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 46,688 psi | 75% | 2451 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 45,890 psi | 74% | 2444 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 35,752 psi | 57% | 2339 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 35,273 psi | 57% | 2287 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 44,643 psi | 72% | 2385 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,451 psi | 65% | 2372 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 88% | 37,014 psi | 59% | 2320 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 51,416 psi | 82% | 2470 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,943 psi | 64% | 2375 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 31,270 psi | 50% | 2247 fps | 98.2% |
| Vihtavuori N560 | <<locked>> | 90% | 43,062 psi | 69% | 2523 fps | 95% |
| Vihtavuori N565 | <<locked>> | 96% | 42,163 psi | 68% | 2500 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,479 psi | 63% | 2346 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,466 psi | 66% | 2428 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,903 psi | 40% | 2165 fps | 97.6% |
| Winchester Supreme 780 | <<locked>> | 88% | 39,349 psi | 63% | 2369 fps | 95.8% |
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 88 powders for .300 H&H Mag. loaded with the .308 | 210gr | Berger LRBTHP. Norma MRP delivers the highest muzzle velocity at 2,753 fps; across all powders the maximum-charge window runs from 1,594 fps to 2,753 fps. ADI AR 2225 gives the best case fill at 100 %, and 88 of the 88 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 210.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-22, Alliant Reloder-23 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-26, Accurate High Country, Norma MRP rank at the top here: for .300 H&H Mag. with the .308 | 210gr | Berger LRBTHP 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.