Load Specifications
Load data in caliber .244 H&H Mag. with .243 | 50gr | Impala LWHV LS bullet and 53 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Alliant Reloder-16 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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Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 53,795 psi | 85% | 3953 fps | 98.2% |
| Accurate 4350 | <<locked>> | 86% | 54,143 psi | 86% | 4035 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 82% | 54,418 psi | 86% | 4016 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,956 psi | 89% | 4058 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 53,882 psi | 85% | 4101 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,434 psi | 88% | 4131 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 96% | 56,521 psi | 90% | 4111 fps | 96.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 53,882 psi | 85% | 4052 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,534 psi | 85% | 4078 fps | 99.1% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,476 psi | 86% | 4127 fps | 99.4% |
| Bofors RP15 | <<locked>> | 98% | 55,492 psi | 88% | 4085 fps | 96.1% |
| Bofors RP5 | <<locked>> | 96% | 56,521 psi | 90% | 4111 fps | 96.5% |
| Bofors RP7 | <<locked>> | 86% | 56,333 psi | 89% | 4035 fps | 97.2% |
| Hodgdon H414 | <<locked>> | 86% | 55,434 psi | 88% | 4078 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 84% | 54,230 psi | 86% | 4026 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,650 psi | 87% | 4009 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,402 psi | 83% | 4117 fps | 96.3% |
| Hodgdon Superformance | <<locked>> | 86% | 56,362 psi | 89% | 4104 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,695 psi | 58% | 2835 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,404 psi | 86% | 3990 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,114 psi | 86% | 3996 fps | 97.2% |
| IMR 4831 | <<locked>> | 88% | 54,404 psi | 86% | 4019 fps | 99.3% |
| Lovex S065 | <<locked>> | 86% | 55,056 psi | 87% | 4003 fps | 98.5% |
| Lovex S070 | <<locked>> | 88% | 56,855 psi | 90% | 4052 fps | 98% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,955 psi | 87% | 3980 fps | 98.4% |
| Norma MRP | <<locked>> | 94% | 56,579 psi | 90% | 4147 fps | 97.9% |
| Norma URP | <<locked>> | 88% | 55,796 psi | 88% | 4078 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 88% | 55,013 psi | 87% | 4062 fps | 98.3% |
| Ramshot Magnum | <<locked>> | 98% | 54,128 psi | 86% | 4009 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,463 psi | 59% | 2897 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,360 psi | 86% | 4127 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,056 psi | 86% | 4042 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 55,970 psi | 89% | 4140 fps | 99.4% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,085 psi | 86% | 4121 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 82% | 54,273 psi | 86% | 4012 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 86% | 56,333 psi | 89% | 4035 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 86% | 55,056 psi | 87% | 4003 fps | 98.5% |
| Shooters World SW4350 | <<locked>> | 88% | 56,855 psi | 90% | 4052 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,201 psi | 87% | 4058 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 57,087 psi | 90% | 3937 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,795 psi | 87% | 3930 fps | 97.5% |
| Somchem S355 | <<locked>> | 82% | 53,795 psi | 85% | 4003 fps | 99.9% |
| Somchem S365 | <<locked>> | 90% | 56,275 psi | 89% | 4094 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,984 psi | 87% | 3999 fps | 97% |
| Vihtavuori N150 | <<locked>> | 84% | 54,940 psi | 87% | 3963 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 53,911 psi | 85% | 3999 fps | 99.1% |
| Vihtavuori N165 | <<locked>> | 96% | 54,273 psi | 86% | 3953 fps | 96.6% |
| Vihtavuori N550 | <<locked>> | 86% | 53,650 psi | 85% | 3999 fps | 99% |
| Vihtavuori N555 | <<locked>> | 94% | 56,202 psi | 89% | 4091 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 53,911 psi | 85% | 3937 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,709 psi | 88% | 4085 fps | 97.6% |
| Winchester StaBALL HD | <<locked>> | 98% | 54,969 psi | 87% | 4196 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,708 psi | 87% | 3976 fps | 96% |
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>> | 88% | 43,845 psi | 69% | 3730 fps | 95.6% |
| Accurate 4350 | <<locked>> | 80% | 44,077 psi | 70% | 3802 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 80% | 51,227 psi | 81% | 3947 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,446 psi | 83% | 3990 fps | 99.9% |
| Alliant Reloder-16 | 58.5 gr | 80% | 41,437 psi | 66% | 3796 fps | 96.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,037 psi | 76% | 3973 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 52,852 psi | 84% | 4035 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 82% | 33,779 psi | 54% | 3530 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 92% | 41,205 psi | 65% | 3763 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 84% | 40,277 psi | 64% | 3780 fps | 95.9% |
| Bofors RP15 | <<locked>> | 96% | 51,938 psi | 82% | 4009 fps | 95.2% |
| Bofors RP5 | <<locked>> | 94% | 52,852 psi | 84% | 4035 fps | 95.6% |
| Bofors RP7 | <<locked>> | 82% | 49,734 psi | 79% | 3891 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 82% | 48,399 psi | 77% | 3917 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 82% | 50,836 psi | 81% | 3950 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,320 psi | 62% | 3658 fps | 97.6% |
| Hodgdon Retumbo | <<locked>> | 98% | 48,965 psi | 78% | 4026 fps | 95% |
| Hodgdon Superformance | <<locked>> | 82% | 48,515 psi | 77% | 3930 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,412 psi | 43% | 2566 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 47,877 psi | 76% | 3842 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,645 psi | 76% | 3845 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 41,742 psi | 66% | 3724 fps | 96.7% |
| Lovex S065 | <<locked>> | 80% | 45,687 psi | 72% | 3789 fps | 96.4% |
| Lovex S070 | <<locked>> | 82% | 47,152 psi | 75% | 3835 fps | 95.7% |
| Lovex S071 | <<locked>> | 92% | 42,540 psi | 67% | 3694 fps | 95.2% |
| Norma MRP | 70.5 gr | 90% | 49,023 psi | 78% | 3980 fps | 96% |
| Norma URP | <<locked>> | 80% | 42,917 psi | 68% | 3783 fps | 96.8% |
| Ramshot Hunter | <<locked>> | 82% | 44,802 psi | 71% | 3822 fps | 95.7% |
| Ramshot Magnum | <<locked>> | 96% | 50,111 psi | 79% | 3917 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,978 psi | 44% | 2625 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,749 psi | 80% | 4055 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,859 psi | 70% | 3802 fps | 96.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,974 psi | 67% | 3796 fps | 96% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 46,775 psi | 74% | 3930 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 80% | 50,850 psi | 81% | 3940 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 82% | 49,734 psi | 79% | 3891 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,687 psi | 72% | 3789 fps | 96.4% |
| Shooters World SW4350 | <<locked>> | 82% | 47,152 psi | 75% | 3835 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,721 psi | 82% | 3986 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,488 psi | 80% | 3819 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,121 psi | 72% | 3711 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 50,444 psi | 80% | 3930 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 39,697 psi | 63% | 3727 fps | 98.9% |
| Somchem S385 | <<locked>> | 88% | 48,037 psi | 76% | 3848 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 80% | 48,414 psi | 77% | 3829 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 44,164 psi | 70% | 3780 fps | 97.2% |
| Vihtavuori N165 | <<locked>> | 94% | 50,792 psi | 81% | 3881 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 43,990 psi | 70% | 3776 fps | 97% |
| Vihtavuori N555 | <<locked>> | 82% | 37,811 psi | 60% | 3648 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,729 psi | 69% | 3720 fps | 99.2% |
| Winchester 760 | <<locked>> | 82% | 48,617 psi | 77% | 3924 fps | 95.8% |
| Winchester StaBALL HD | 65.1 gr | 84% | 32,793 psi | 52% | 3579 fps | 96.1% |
| Winchester Supreme 780 | <<locked>> | 92% | 51,111 psi | 81% | 3894 fps | 95% |
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 73 powders for .244 H&H Mag. loaded with the .243 | 50gr | Impala LWHV LS. Winchester StaBALL HD delivers the highest muzzle velocity at 4,196 fps; across all powders the maximum-charge window runs from 2,835 fps to 4,196 fps. ADI AR 2217 gives the best case fill at 100 %, and 73 of the 73 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (435 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 50.0 gr projectile in 0.243" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Winchester StaBALL HD, Alliant Reloder-16, Norma MRP rank at the top here: for .244 H&H Mag. with the .243 | 50gr | Impala LWHV LS they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, ADI AR 2217 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.