Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 206gr | Peregrine Backup (VRG-2) bullet and 91 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.
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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>> | 82% | 56,289 psi | 90% | 2536 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 54,085 psi | 87% | 2569 fps | 99.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 55,767 psi | 89% | 2667 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 53,374 psi | 86% | 2546 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,201 psi | 87% | 2657 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 53,417 psi | 86% | 2753 fps | 98.2% |
| Accurate MAGPRO | <<locked>> | 98% | 54,259 psi | 87% | 2753 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 84% | 53,766 psi | 86% | 2585 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 55,332 psi | 89% | 2707 fps | 99% |
| ADI AR 2213 | <<locked>> | 98% | 53,084 psi | 85% | 2703 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 36,129 psi | 58% | 2438 fps | 96.4% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 55,550 psi | 89% | 2703 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,433 psi | 87% | 2602 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,665 psi | 88% | 2621 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 55,245 psi | 89% | 2710 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 52,649 psi | 84% | 2677 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 54,766 psi | 88% | 2694 fps | 99% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 55,637 psi | 89% | 2753 fps | 99.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,634 psi | 84% | 2677 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,527 psi | 73% | 2621 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 52,678 psi | 84% | 2762 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,850 psi | 82% | 2677 fps | 98.5% |
| Bofors RP3 | <<locked>> | 84% | 54,955 psi | 88% | 2615 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 55,637 psi | 89% | 2753 fps | 99.2% |
| Bofors RP7 | <<locked>> | 88% | 54,433 psi | 87% | 2608 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 45,339 psi | 73% | 2566 fps | 96.8% |
| Hodgdon H380 | <<locked>> | 84% | 55,550 psi | 89% | 2638 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 52,939 psi | 85% | 2657 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 88% | 56,260 psi | 90% | 2671 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 96% | 53,069 psi | 85% | 2651 fps | 97.1% |
| Hodgdon H4831 SC | <<locked>> | 98% | 55,753 psi | 89% | 2687 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,477 psi | 89% | 2635 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,701 psi | 72% | 2661 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 88% | 52,779 psi | 85% | 2690 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,550 psi | 59% | 1617 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 52,997 psi | 85% | 2562 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,463 psi | 89% | 2598 fps | 99.7% |
| IMR 4350 | <<locked>> | 92% | 55,622 psi | 89% | 2648 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,188 psi | 90% | 2635 fps | 99.8% |
| IMR 4831 | <<locked>> | 92% | 54,607 psi | 88% | 2648 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 56,072 psi | 90% | 2648 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 54,665 psi | 88% | 2638 fps | 97.6% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,085 psi | 87% | 2733 fps | 98.1% |
| Lovex S062 | <<locked>> | 82% | 53,330 psi | 86% | 2556 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,333 psi | 90% | 2631 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 54,056 psi | 87% | 2621 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,224 psi | 74% | 2530 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 53,969 psi | 87% | 2608 fps | 100% |
| Norma 204 | <<locked>> | 90% | 52,823 psi | 85% | 2644 fps | 98.6% |
| Norma MRP | <<locked>> | 98% | 55,288 psi | 89% | 2776 fps | 99.8% |
| Norma URP | <<locked>> | 90% | 53,026 psi | 85% | 2641 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,636 psi | 88% | 2635 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,346 psi | 87% | 2749 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 92% | 55,492 psi | 89% | 2700 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,646 psi | 78% | 2635 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,159 psi | 60% | 1654 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,332 psi | 89% | 2625 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 55,999 psi | 90% | 2717 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,114 psi | 87% | 2680 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 56,420 psi | 90% | 2759 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,556 psi | 71% | 2654 fps | 99% |
| Rottweil R 902 | <<locked>> | 82% | 55,129 psi | 88% | 2566 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,085 psi | 88% | 2612 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 53,432 psi | 86% | 2625 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 96% | 54,012 psi | 87% | 2684 fps | 99% |
| Rottweil R 907 | <<locked>> | 88% | 54,433 psi | 87% | 2608 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,333 psi | 90% | 2631 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 53,330 psi | 86% | 2556 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,056 psi | 87% | 2621 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 53,403 psi | 86% | 2625 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,202 psi | 90% | 2500 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,825 psi | 90% | 2589 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 53,548 psi | 86% | 2677 fps | 98.9% |
| Somchem S355 | <<locked>> | 86% | 55,158 psi | 88% | 2608 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 55,027 psi | 88% | 2621 fps | 97.4% |
| Somchem S365 | <<locked>> | 94% | 56,347 psi | 90% | 2694 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 54,505 psi | 87% | 2657 fps | 99.5% |
| Vihtavuori N135 | <<locked>> | 82% | 55,492 psi | 89% | 2523 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,912 psi | 90% | 2543 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 52,881 psi | 85% | 2539 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,172 psi | 88% | 2638 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,867 psi | 86% | 2638 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 82% | 53,940 psi | 86% | 2539 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,128 psi | 87% | 2641 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 54,984 psi | 88% | 2700 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 55,535 psi | 89% | 2769 fps | 97.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 47,166 psi | 76% | 2625 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,578 psi | 88% | 2605 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 53,185 psi | 85% | 2661 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,051 psi | 77% | 2743 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,462 psi | 87% | 2651 fps | 98.9% |
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% | 52,547 psi | 84% | 2490 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,691 psi | 81% | 2520 fps | 98.9% |
| Accurate 3100 | <<locked>> | 82% | 29,965 psi | 48% | 2201 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 49,893 psi | 80% | 2500 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,276 psi | 61% | 2395 fps | 99.2% |
| Accurate High Country | 63.8 gr | 90% | 43,323 psi | 69% | 2579 fps | 95.9% |
| Accurate MAGPRO | <<locked>> | 94% | 46,949 psi | 75% | 2635 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 47,369 psi | 76% | 2487 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 39,856 psi | 64% | 2438 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 92% | 43,163 psi | 69% | 2530 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 98% | 33,837 psi | 54% | 2379 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 37,347 psi | 60% | 2382 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,877 psi | 77% | 2507 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,169 psi | 82% | 2572 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,434 psi | 60% | 2408 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,656 psi | 68% | 2523 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 39,537 psi | 63% | 2431 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 88% | 37,115 psi | 60% | 2425 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,180 psi | 44% | 2182 fps | 97.6% |
| Alliant Reloder-25 | <<locked>> | 86% | 29,037 psi | 47% | 2244 fps | 95% |
| Alliant Reloder-26 | 58.4 gr | 80% | 29,051 psi | 47% | 2283 fps | 96.1% |
| Bofors RP15 | <<locked>> | 92% | 39,218 psi | 63% | 2467 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 48,211 psi | 77% | 2520 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 37,115 psi | 60% | 2425 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 42,293 psi | 68% | 2408 fps | 97.6% |
| Hodgdon H1000 | <<locked>> | 98% | 42,279 psi | 68% | 2510 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 48,588 psi | 78% | 2533 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 40,379 psi | 65% | 2441 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 80% | 43,410 psi | 70% | 2461 fps | 97.2% |
| Hodgdon H4831 | <<locked>> | 92% | 46,209 psi | 74% | 2536 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 45,324 psi | 73% | 2523 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,853 psi | 56% | 2303 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 94% | 36,738 psi | 59% | 2480 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 39,276 psi | 63% | 2454 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,253 psi | 44% | 1440 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,806 psi | 80% | 2516 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,982 psi | 83% | 2549 fps | 99.5% |
| IMR 4350 | <<locked>> | 80% | 38,000 psi | 61% | 2343 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,918 psi | 70% | 2438 fps | 98.3% |
| IMR 4831 | <<locked>> | 80% | 36,927 psi | 59% | 2352 fps | 99% |
| IMR 4895 | <<locked>> | 80% | 52,489 psi | 84% | 2598 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 45,353 psi | 73% | 2487 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 94% | 44,135 psi | 71% | 2562 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 49,922 psi | 80% | 2510 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,162 psi | 66% | 2388 fps | 98.8% |
| Lovex S070 | <<locked>> | 80% | 39,392 psi | 63% | 2372 fps | 97.6% |
| Lovex S071 | <<locked>> | 88% | 31,241 psi | 50% | 2234 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 50,488 psi | 81% | 2559 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,147 psi | 64% | 2425 fps | 95.7% |
| Norma MRP | 59.5 gr | 84% | 33,779 psi | 54% | 2375 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 38,145 psi | 61% | 2392 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 80% | 51,169 psi | 82% | 2585 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 40,785 psi | 65% | 2510 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 37,057 psi | 59% | 2382 fps | 97.6% |
| Ramshot Magnum | <<locked>> | 92% | 36,085 psi | 58% | 2395 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,847 psi | 45% | 1480 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,602 psi | 78% | 2523 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,353 psi | 73% | 2566 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,174 psi | 61% | 2415 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,086 psi | 59% | 2428 fps | 98.6% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 35,955 psi | 58% | 2464 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 80% | 51,837 psi | 83% | 2523 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,324 psi | 73% | 2470 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 41,423 psi | 66% | 2421 fps | 95% |
| Rottweil R 905 | <<locked>> | 86% | 38,464 psi | 62% | 2411 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 42,293 psi | 68% | 2408 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,162 psi | 66% | 2388 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 49,922 psi | 80% | 2510 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,392 psi | 63% | 2372 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,789 psi | 75% | 2526 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,789 psi | 75% | 2379 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,248 psi | 65% | 2339 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 38,145 psi | 61% | 2408 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 45,585 psi | 73% | 2467 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 44,918 psi | 72% | 2461 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 34,635 psi | 56% | 2349 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 34,243 psi | 55% | 2293 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 52,359 psi | 84% | 2484 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,344 psi | 84% | 2497 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,584 psi | 70% | 2402 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,595 psi | 63% | 2388 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 88% | 35,969 psi | 58% | 2326 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 50,531 psi | 81% | 2493 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,015 psi | 63% | 2392 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 80% | 30,052 psi | 48% | 2247 fps | 97.6% |
| Vihtavuori N560 | <<locked>> | 92% | 45,252 psi | 73% | 2598 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 98% | 43,990 psi | 71% | 2569 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,595 psi | 62% | 2359 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 40,553 psi | 65% | 2444 fps | 97.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 23,917 psi | 38% | 2159 fps | 96.6% |
| Winchester Supreme 780 | <<locked>> | 88% | 38,435 psi | 62% | 2382 fps | 95.3% |
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 91 powders for .300 H&H Mag. loaded with the .308 | 206gr | Peregrine Backup (VRG-2). Norma MRP delivers the highest muzzle velocity at 2,776 fps; across all powders the maximum-charge window runs from 1,617 fps to 2,776 fps. Accurate 3100 gives the best case fill at 100 %, and 91 of the 91 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 206.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2225, 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. Alliant Reloder-26, Accurate High Country, Norma MRP rank at the top here: for .300 H&H Mag. with the .308 | 206gr | Peregrine Backup (VRG-2) 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.