Load Specifications
Load data in caliber .244 H&H Mag. with .243 | 65gr | Impala LWHV LS bullet and 65 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Winchester StaBALL HD and IMR 7828 SSC.
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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Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 90% | 54,694 psi | 87% | 3675 fps | 99.6% |
| Accurate 4350 | <<locked>> | 82% | 54,868 psi | 87% | 3727 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 56,550 psi | 90% | 3825 fps | 96.2% |
| ADI AR 2209 | <<locked>> | 88% | 55,042 psi | 87% | 3763 fps | 98% |
| ADI AR 2213 | <<locked>> | 92% | 56,869 psi | 90% | 3829 fps | 97.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 55,506 psi | 88% | 3773 fps | 97.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 50,488 psi | 80% | 3720 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 84% | 54,607 psi | 87% | 3786 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 54,723 psi | 87% | 3747 fps | 98% |
| Alliant Reloder-22 | <<locked>> | 90% | 53,809 psi | 85% | 3757 fps | 97.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 55,230 psi | 88% | 3753 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 55,071 psi | 87% | 3806 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 56,014 psi | 89% | 3839 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 56,637 psi | 90% | 3809 fps | 98.3% |
| Bofors RP30 | <<locked>> | 98% | 55,463 psi | 88% | 3796 fps | 97.7% |
| Bofors RP5 | <<locked>> | 90% | 53,809 psi | 85% | 3757 fps | 97.9% |
| Bofors RP7 | <<locked>> | 82% | 56,086 psi | 89% | 3720 fps | 98.9% |
| Hodgdon H1000 | <<locked>> | 96% | 53,432 psi | 85% | 3734 fps | 97.7% |
| Hodgdon H414 | <<locked>> | 82% | 55,724 psi | 88% | 3773 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 90% | 56,695 psi | 90% | 3753 fps | 96.7% |
| Hodgdon H4831 SC | <<locked>> | 90% | 55,477 psi | 88% | 3730 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 55,521 psi | 88% | 3701 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 53,998 psi | 86% | 3878 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 82% | 56,536 psi | 90% | 3799 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,347 psi | 59% | 2552 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 54,172 psi | 86% | 3684 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 57,072 psi | 90% | 3743 fps | 99.3% |
| IMR 4831 | <<locked>> | 84% | 55,013 psi | 87% | 3714 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 53,824 psi | 85% | 3668 fps | 96.2% |
| IMR 7828 SSC | <<locked>> | 92% | 55,071 psi | 87% | 3802 fps | 97.1% |
| Lovex S065 | <<locked>> | 82% | 55,013 psi | 87% | 3684 fps | 99.7% |
| Lovex S070 | <<locked>> | 84% | 56,826 psi | 90% | 3737 fps | 99.4% |
| Lovex S071 | <<locked>> | 96% | 56,173 psi | 89% | 3701 fps | 99.7% |
| Norma 204 | <<locked>> | 84% | 55,332 psi | 88% | 3743 fps | 97.9% |
| Norma 217ᴾ | <<locked>> | 100% | 46,673 psi | 74% | 3642 fps | 97.6% |
| Norma MRP | <<locked>> | 88% | 53,882 psi | 85% | 3786 fps | 99% |
| Norma URP | <<locked>> | 84% | 56,289 psi | 89% | 3763 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 56,101 psi | 89% | 3825 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 84% | 55,303 psi | 88% | 3753 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 94% | 55,376 psi | 88% | 3747 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,261 psi | 61% | 2608 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 54,708 psi | 87% | 3740 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 56,492 psi | 90% | 3829 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 55,317 psi | 88% | 3868 fps | 99.7% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 55,013 psi | 87% | 3799 fps | 96.2% |
| Rottweil R 904 | <<locked>> | 88% | 55,941 psi | 89% | 3727 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 88% | 54,418 psi | 86% | 3737 fps | 98% |
| Rottweil R 907 | <<locked>> | 82% | 56,086 psi | 89% | 3720 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 82% | 55,013 psi | 87% | 3684 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 84% | 56,826 psi | 90% | 3737 fps | 99.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 54,056 psi | 86% | 3615 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 53,998 psi | 86% | 3734 fps | 98% |
| Somchem S361 | <<locked>> | 86% | 54,389 psi | 86% | 3635 fps | 96.2% |
| Somchem S365 | <<locked>> | 84% | 53,577 psi | 85% | 3707 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 55,274 psi | 88% | 3707 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 82% | 54,230 psi | 86% | 3688 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 54,940 psi | 87% | 3678 fps | 98.6% |
| Vihtavuori N550 | <<locked>> | 82% | 53,853 psi | 85% | 3688 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 88% | 54,259 psi | 86% | 3734 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 57,058 psi | 90% | 3845 fps | 97% |
| Vihtavuori N565 | <<locked>> | 94% | 54,578 psi | 87% | 3750 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 53,766 psi | 85% | 3622 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 55,724 psi | 88% | 3773 fps | 99.2% |
| Winchester StaBALL HD | <<locked>> | 92% | 53,838 psi | 85% | 3835 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 54,984 psi | 87% | 3691 fps | 98.1% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 39,392 psi | 62% | 3330 fps | 96.5% |
| Accurate 4350 | <<locked>> | 80% | 51,300 psi | 81% | 3658 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 88% | 52,895 psi | 84% | 3747 fps | 95.2% |
| ADI AR 2209 | <<locked>> | 82% | 45,165 psi | 72% | 3543 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 88% | 49,661 psi | 79% | 3671 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 96% | 48,573 psi | 77% | 3619 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 92% | 38,986 psi | 62% | 3419 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,080 psi | 76% | 3655 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 82% | 45,208 psi | 72% | 3533 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 84% | 44,193 psi | 70% | 3540 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,188 psi | 59% | 3356 fps | 99% |
| Alliant Reloder-25 | <<locked>> | 82% | 34,853 psi | 55% | 3301 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,713 psi | 66% | 3530 fps | 98.5% |
| Bofors RP15 | <<locked>> | 86% | 43,859 psi | 70% | 3524 fps | 95% |
| Bofors RP30 | <<locked>> | 94% | 48,385 psi | 77% | 3645 fps | 95.9% |
| Bofors RP5 | <<locked>> | 84% | 44,193 psi | 70% | 3540 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 52,605 psi | 83% | 3648 fps | 98.3% |
| Hodgdon H1000 | <<locked>> | 92% | 46,572 psi | 74% | 3579 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 52,243 psi | 83% | 3701 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 88% | 53,055 psi | 84% | 3681 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 88% | 51,880 psi | 82% | 3655 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,730 psi | 72% | 3507 fps | 99.9% |
| Hodgdon Retumbo | 67.1 gr | 90% | 44,121 psi | 70% | 3629 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 52,634 psi | 83% | 3720 fps | 98.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,065 psi | 44% | 2300 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,906 psi | 76% | 3550 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,548 psi | 85% | 3675 fps | 98.8% |
| IMR 4831 | <<locked>> | 80% | 48,283 psi | 77% | 3579 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 86% | 50,517 psi | 80% | 3596 fps | 95.3% |
| IMR 7828 SSC | 65.5 gr | 88% | 48,008 psi | 76% | 3645 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 51,619 psi | 82% | 3619 fps | 99.4% |
| Lovex S070 | <<locked>> | 80% | 50,285 psi | 80% | 3609 fps | 98.5% |
| Lovex S071 | <<locked>> | 82% | 36,390 psi | 58% | 3245 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 48,312 psi | 77% | 3593 fps | 96.3% |
| Norma 217 | <<locked>> | 96% | 40,828 psi | 65% | 3491 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 40,611 psi | 64% | 3471 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 49,545 psi | 79% | 3632 fps | 99.7% |
| Ramshot Grand | <<locked>> | 88% | 48,428 psi | 77% | 3658 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 48,356 psi | 77% | 3612 fps | 98.7% |
| Ramshot Magnum | <<locked>> | 86% | 41,089 psi | 65% | 3425 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,747 psi | 46% | 2356 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,053 psi | 81% | 3668 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 49,052 psi | 78% | 3678 fps | 99.6% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 38,566 psi | 61% | 3442 fps | 95.2% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 50,966 psi | 81% | 3717 fps | 95.1% |
| Rottweil R 904 | <<locked>> | 84% | 49,371 psi | 78% | 3586 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 82% | 44,730 psi | 71% | 3520 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 52,605 psi | 83% | 3648 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,619 psi | 82% | 3619 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 80% | 50,285 psi | 80% | 3609 fps | 98.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,691 psi | 80% | 3547 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 44,367 psi | 70% | 3514 fps | 95.4% |
| Somchem S361 | <<locked>> | 84% | 50,865 psi | 81% | 3563 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 46,920 psi | 74% | 3579 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,902 psi | 68% | 3432 fps | 96% |
| Vihtavuori N160 | <<locked>> | 80% | 50,807 psi | 81% | 3619 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 42,424 psi | 67% | 3402 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 50,502 psi | 80% | 3622 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 80% | 41,771 psi | 66% | 3458 fps | 99% |
| Vihtavuori N560 | <<locked>> | 86% | 49,763 psi | 79% | 3684 fps | 95% |
| Vihtavuori N565 | <<locked>> | 92% | 51,155 psi | 81% | 3678 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,241 psi | 80% | 3556 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 52,243 psi | 83% | 3701 fps | 98.7% |
| Winchester StaBALL HD | 61.2 gr | 80% | 33,765 psi | 54% | 3369 fps | 99.3% |
| Winchester Supreme 780 | <<locked>> | 84% | 44,933 psi | 71% | 3474 fps | 95.6% |
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 71 powders for .244 H&H Mag. loaded with the .243 | 65gr | Impala LWHV LS. Hodgdon Retumbo delivers the highest muzzle velocity at 3,878 fps; across all powders the maximum-charge window runs from 2,552 fps to 3,878 fps. ADI AR 2217 gives the best case fill at 100 %, and 71 of the 71 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (435 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 65.0 gr projectile in 0.243" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-33 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. Hodgdon Retumbo, Winchester StaBALL HD, IMR 7828 SSC rank at the top here: for .244 H&H Mag. with the .243 | 65gr | Impala LWHV LS they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, Baschieri & Pellagri 109, Vihtavuori N170 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.