Load Specifications
Load data in caliber .244 H&H Mag. with .243 | 55gr | Nosler Varmageddon HP bullet and 62 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>> | 96% | 56,521 psi | 90% | 3907 fps | 99.1% |
| Accurate 4350 | <<locked>> | 88% | 57,072 psi | 90% | 3986 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 82% | 54,201 psi | 86% | 3904 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 92% | 54,650 psi | 87% | 3957 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,419 psi | 88% | 3934 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 53,882 psi | 85% | 3990 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,347 psi | 88% | 4012 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,085 psi | 86% | 3930 fps | 96.6% |
| Alliant Reloder-22 | <<locked>> | 96% | 56,391 psi | 89% | 4006 fps | 97.2% |
| Alliant Reloder-23 | <<locked>> | 96% | 53,592 psi | 85% | 3934 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,301 psi | 84% | 3973 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,259 psi | 86% | 4016 fps | 99.7% |
| Bofors RP15 | <<locked>> | 98% | 55,332 psi | 88% | 3980 fps | 96.9% |
| Bofors RP3 | <<locked>> | 82% | 56,782 psi | 90% | 3953 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 56,391 psi | 89% | 4006 fps | 97.2% |
| Bofors RP7 | <<locked>> | 86% | 55,796 psi | 88% | 3921 fps | 97.8% |
| Hodgdon H380 | <<locked>> | 82% | 57,000 psi | 90% | 3970 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 86% | 55,143 psi | 87% | 3967 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 84% | 54,041 psi | 86% | 3917 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,360 psi | 86% | 3898 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,127 psi | 83% | 4019 fps | 97.2% |
| Hodgdon Superformance | <<locked>> | 86% | 56,333 psi | 89% | 3996 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,463 psi | 58% | 2726 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 57,014 psi | 90% | 3953 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,157 psi | 86% | 3885 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 53,911 psi | 85% | 3885 fps | 97.8% |
| IMR 4831 | <<locked>> | 88% | 53,795 psi | 85% | 3901 fps | 99.6% |
| Lovex S065 | <<locked>> | 86% | 54,389 psi | 86% | 3885 fps | 98.9% |
| Lovex S070 | <<locked>> | 88% | 56,188 psi | 89% | 3937 fps | 98.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,896 psi | 85% | 3855 fps | 98.8% |
| Norma 204 | <<locked>> | 88% | 55,317 psi | 88% | 3940 fps | 96.6% |
| Norma MRP | <<locked>> | 94% | 56,434 psi | 89% | 4039 fps | 98.5% |
| Norma URP | <<locked>> | 88% | 55,405 psi | 88% | 3963 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 88% | 54,737 psi | 87% | 3950 fps | 98.8% |
| Ramshot Magnum | <<locked>> | 98% | 53,896 psi | 85% | 3907 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,173 psi | 59% | 2785 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,695 psi | 90% | 3937 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,462 psi | 86% | 4009 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 53,548 psi | 85% | 3921 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 55,927 psi | 89% | 4029 fps | 99.7% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,795 psi | 85% | 4019 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 84% | 56,855 psi | 90% | 3947 fps | 100% |
| Rottweil R 905 | <<locked>> | 92% | 53,447 psi | 85% | 3917 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 86% | 55,796 psi | 88% | 3921 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,389 psi | 86% | 3885 fps | 98.9% |
| Shooters World SW4350 | <<locked>> | 88% | 56,188 psi | 89% | 3937 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,911 psi | 87% | 3944 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,797 psi | 90% | 3816 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,070 psi | 86% | 3816 fps | 98.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 56,898 psi | 90% | 3990 fps | 97.3% |
| Somchem S355 | <<locked>> | 84% | 56,695 psi | 90% | 3947 fps | 100% |
| Somchem S365 | <<locked>> | 90% | 55,985 psi | 89% | 3973 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,331 psi | 86% | 3885 fps | 97.6% |
| Vihtavuori N150 | <<locked>> | 84% | 54,346 psi | 86% | 3842 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 53,519 psi | 85% | 3881 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 96% | 53,940 psi | 85% | 3848 fps | 97.2% |
| Vihtavuori N550 | <<locked>> | 88% | 56,985 psi | 90% | 3960 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 94% | 55,492 psi | 88% | 3967 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 53,751 psi | 85% | 3829 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,405 psi | 88% | 3973 fps | 98.2% |
| Winchester StaBALL HD | <<locked>> | 98% | 55,332 psi | 88% | 4081 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,447 psi | 86% | 3871 fps | 96.7% |
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% | 42,366 psi | 67% | 3596 fps | 96% |
| Accurate 4350 | <<locked>> | 80% | 42,699 psi | 68% | 3668 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 80% | 50,908 psi | 81% | 3832 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 90% | 50,937 psi | 81% | 3871 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,793 psi | 82% | 3862 fps | 100% |
| Alliant Reloder-16 | 58.5 gr | 80% | 40,857 psi | 65% | 3678 fps | 97.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,688 psi | 76% | 3852 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 50,546 psi | 80% | 3852 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 92% | 48,965 psi | 78% | 3842 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 82% | 32,561 psi | 52% | 3396 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 92% | 40,379 psi | 64% | 3645 fps | 96.2% |
| Alliant Reloder-26 | <<locked>> | 84% | 39,305 psi | 62% | 3648 fps | 96.3% |
| Bofors RP15 | <<locked>> | 96% | 51,576 psi | 82% | 3901 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 52,997 psi | 84% | 3881 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 48,965 psi | 78% | 3842 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 45,774 psi | 73% | 3694 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 53,026 psi | 84% | 3888 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 44,628 psi | 71% | 3724 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 82% | 50,517 psi | 80% | 3842 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,435 psi | 61% | 3530 fps | 98% |
| Hodgdon Retumbo | <<locked>> | 98% | 48,544 psi | 77% | 3927 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 44,382 psi | 70% | 3724 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,108 psi | 43% | 2464 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,534 psi | 85% | 3885 fps | 99.8% |
| IMR 4350 | <<locked>> | 84% | 47,384 psi | 75% | 3734 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,210 psi | 75% | 3734 fps | 96.2% |
| IMR 4831 | <<locked>> | 80% | 40,669 psi | 64% | 3593 fps | 97.1% |
| Lovex S065 | <<locked>> | 80% | 44,701 psi | 71% | 3665 fps | 96.9% |
| Lovex S070 | <<locked>> | 80% | 43,120 psi | 68% | 3632 fps | 95.2% |
| Lovex S071 | <<locked>> | 92% | 40,930 psi | 65% | 3556 fps | 95.4% |
| Norma 204 | <<locked>> | 86% | 51,358 psi | 81% | 3858 fps | 95.6% |
| Norma MRP | 68.9 gr | 88% | 44,976 psi | 71% | 3776 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 42,061 psi | 67% | 3658 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 80% | 41,191 psi | 65% | 3629 fps | 95.3% |
| Ramshot Magnum | <<locked>> | 94% | 45,847 psi | 73% | 3724 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,615 psi | 44% | 2520 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,852 psi | 84% | 3858 fps | 98.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,589 psi | 80% | 3934 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,917 psi | 68% | 3678 fps | 97.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,307 psi | 65% | 3681 fps | 96.6% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 42,670 psi | 68% | 3727 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 49,748 psi | 79% | 3806 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 90% | 49,806 psi | 79% | 3832 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 45,774 psi | 73% | 3694 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,701 psi | 71% | 3665 fps | 96.9% |
| Shooters World SW4350 | <<locked>> | 80% | 43,120 psi | 68% | 3632 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,300 psi | 81% | 3868 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,995 psi | 79% | 3698 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,048 psi | 70% | 3593 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 49,385 psi | 78% | 3829 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 49,559 psi | 79% | 3802 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 38,754 psi | 61% | 3593 fps | 99.1% |
| Somchem S385 | <<locked>> | 88% | 47,137 psi | 75% | 3727 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 47,616 psi | 75% | 3704 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,424 psi | 69% | 3658 fps | 97.7% |
| Vihtavuori N165 | <<locked>> | 92% | 46,920 psi | 74% | 3694 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 43,062 psi | 68% | 3652 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 82% | 36,419 psi | 58% | 3504 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,149 psi | 68% | 3609 fps | 99.5% |
| Winchester 760 | <<locked>> | 80% | 44,846 psi | 71% | 3730 fps | 95.5% |
| Winchester StaBALL HD | 65.1 gr | 84% | 31,386 psi | 50% | 3438 fps | 96.3% |
| Winchester Supreme 780 | <<locked>> | 92% | 50,647 psi | 80% | 3789 fps | 95.7% |
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 81 powders for .244 H&H Mag. loaded with the .243 | 55gr | Nosler Varmageddon HP. Winchester StaBALL HD delivers the highest muzzle velocity at 4,081 fps; across all powders the maximum-charge window runs from 2,726 fps to 4,081 fps. ADI AR 2217 gives the best case fill at 100 %, and 81 of the 81 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. 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 | 55gr | Nosler Varmageddon HP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2217, Baschieri & Pellagri 109 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.