Load Specifications
Load data in caliber .244 H&H Mag. with .243 | 108gr | Hornady ELD Match bullet and 45 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2218, Vihtavuori N570 and IMR 8133 Enduron.
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>> | 84% | 56,594 psi | 90% | 3074 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 52,518 psi | 83% | 3110 fps | 97.8% |
| Accurate MAGPRO | <<locked>> | 82% | 55,811 psi | 88% | 3189 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 84% | 56,420 psi | 89% | 3186 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 55,840 psi | 89% | 3169 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 56,579 psi | 90% | 3304 fps | 99.2% |
| ADI AR 2225 | <<locked>> | 94% | 55,854 psi | 89% | 3196 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 57,029 psi | 90% | 3153 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 56,971 psi | 90% | 3179 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 55,274 psi | 88% | 3077 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 56,043 psi | 89% | 3159 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 54,766 psi | 87% | 3209 fps | 98.6% |
| Alliant Reloder-50 | <<locked>> | 96% | 55,085 psi | 87% | 3202 fps | 98.2% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 56,376 psi | 89% | 3140 fps | 99% |
| Bofors RP15 | <<locked>> | 86% | 56,478 psi | 90% | 3169 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 55,970 psi | 89% | 3182 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 56,971 psi | 90% | 3179 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 53,374 psi | 85% | 3123 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 54,868 psi | 87% | 3107 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 82% | 53,882 psi | 85% | 3091 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 88% | 55,796 psi | 88% | 3258 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,985 psi | 60% | 2044 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 54,853 psi | 87% | 3084 fps | 99.8% |
| IMR 7828 SSC | <<locked>> | 84% | 55,056 psi | 87% | 3169 fps | 99.9% |
| IMR 8133 Enduron | <<locked>> | 96% | 54,679 psi | 87% | 3176 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 55,042 psi | 87% | 3048 fps | 100% |
| Norma 217 | <<locked>> | 96% | 56,333 psi | 89% | 3202 fps | 100% |
| Norma MRP | <<locked>> | 82% | 57,029 psi | 90% | 3189 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 56,405 psi | 89% | 3192 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 55,013 psi | 87% | 3117 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,102 psi | 62% | 2093 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 56,710 psi | 90% | 3238 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 55,796 psi | 88% | 3209 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 82% | 56,811 psi | 90% | 3143 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 54,447 psi | 86% | 3123 fps | 97.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 56,478 psi | 90% | 3140 fps | 100% |
| Vihtavuori N165 | <<locked>> | 84% | 53,664 psi | 85% | 3041 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 56,724 psi | 90% | 3133 fps | 97.7% |
| Vihtavuori N555 | <<locked>> | 82% | 56,884 psi | 90% | 3107 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 56,304 psi | 89% | 3196 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 86% | 54,099 psi | 86% | 3133 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 90% | 56,173 psi | 89% | 3212 fps | 99.6% |
| Vihtavuori N570 | <<locked>> | 90% | 53,664 psi | 85% | 3209 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 84% | 56,565 psi | 90% | 3176 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 56,985 psi | 90% | 3107 fps | 100% |
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% | 49,443 psi | 78% | 2956 fps | 100% |
| Accurate 8700 | <<locked>> | 96% | 45,266 psi | 72% | 2969 fps | 95.9% |
| Accurate MAGPRO | <<locked>> | 80% | 52,098 psi | 83% | 3120 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 80% | 49,081 psi | 78% | 3054 fps | 99.5% |
| ADI AR 2217 | <<locked>> | 80% | 36,666 psi | 58% | 2779 fps | 97.2% |
| ADI AR 2218 | 67.4 gr | 88% | 42,047 psi | 67% | 2989 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 80% | 33,939 psi | 54% | 2746 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 80% | 53,301 psi | 84% | 3087 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 49,835 psi | 79% | 3051 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 48,486 psi | 77% | 2966 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 42,598 psi | 68% | 2920 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 86% | 43,700 psi | 69% | 2982 fps | 95.9% |
| Alliant Reloder-50 | <<locked>> | 90% | 43,990 psi | 70% | 2979 fps | 95.3% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 46,427 psi | 74% | 2953 fps | 97% |
| Bofors RP15 | <<locked>> | 80% | 46,311 psi | 73% | 2982 fps | 99.6% |
| Bofors RP30 | <<locked>> | 80% | 39,769 psi | 63% | 2861 fps | 98.1% |
| Bofors RP5 | <<locked>> | 80% | 49,835 psi | 79% | 3051 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 80% | 40,001 psi | 63% | 2861 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 80% | 51,184 psi | 81% | 3041 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 50,473 psi | 80% | 3031 fps | 99.3% |
| Hodgdon Retumbo | <<locked>> | 80% | 41,713 psi | 66% | 2986 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,631 psi | 45% | 1834 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 51,561 psi | 82% | 3025 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 80% | 47,863 psi | 76% | 3038 fps | 99.4% |
| IMR 8133 Enduron | 57.7 gr | 82% | 33,953 psi | 54% | 2726 fps | 95.9% |
| Lovex S071 | <<locked>> | 80% | 42,743 psi | 68% | 2828 fps | 100% |
| Norma 217 | <<locked>> | 80% | 31,995 psi | 51% | 2684 fps | 97.3% |
| Norma MRP | <<locked>> | 80% | 53,185 psi | 84% | 3127 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 48,588 psi | 77% | 3054 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 80% | 43,888 psi | 70% | 2917 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,486 psi | 47% | 1877 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 41,495 psi | 66% | 2959 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 38,218 psi | 61% | 2844 fps | 96.1% |
| Rottweil R 905 | <<locked>> | 80% | 53,258 psi | 84% | 3084 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 94% | 44,295 psi | 70% | 2923 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 52,895 psi | 84% | 3077 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 46,963 psi | 74% | 2923 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 84% | 46,311 psi | 73% | 2933 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 80% | 53,330 psi | 85% | 3051 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 52,533 psi | 83% | 3130 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 80% | 44,164 psi | 70% | 2940 fps | 98.5% |
| Vihtavuori N568 | <<locked>> | 80% | 39,117 psi | 62% | 2861 fps | 95.9% |
| Vihtavuori N570 | 63 gr | 84% | 43,178 psi | 68% | 2989 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 48,617 psi | 77% | 3048 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 49,516 psi | 78% | 2982 fps | 99.9% |
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 53 powders for .244 H&H Mag. loaded with the .243 | 108gr | Hornady ELD Match. ADI AR 2218 delivers the highest muzzle velocity at 3,304 fps; across all powders the maximum-charge window runs from 2,044 fps to 3,304 fps. Accurate 8700 gives the best case fill at 100 %, and 53 of the 53 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (435 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 108.0 gr projectile in 0.243" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 8700, Hodgdon TrailBoss, ReloadSwiss RS 14 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. ADI AR 2218, Vihtavuori N570, IMR 8133 Enduron rank at the top here: for .244 H&H Mag. with the .243 | 108gr | Hornady ELD Match they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Hodgdon 50BMG, Hodgdon US 869, Lovex D100 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.