Load Specifications
Load data in caliber .244 H&H Mag. with .243 | 90gr | Hornady CX bullet and 51 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 80 and Vihtavuori N570.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 88% | 56,666 psi | 90% | 3314 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 55,956 psi | 89% | 3425 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 84% | 54,259 psi | 86% | 3350 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 88% | 56,782 psi | 90% | 3432 fps | 99.5% |
| ADI AR 2217 | <<locked>> | 96% | 55,695 psi | 88% | 3402 fps | 99.7% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 56,608 psi | 90% | 3520 fps | 97.7% |
| ADI AR 2225 | <<locked>> | 98% | 54,636 psi | 87% | 3422 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 53,809 psi | 85% | 3337 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 86% | 53,243 psi | 84% | 3353 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 88% | 55,100 psi | 87% | 3323 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 55,463 psi | 88% | 3399 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 55,840 psi | 89% | 3412 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 53,896 psi | 85% | 3412 fps | 96.9% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 53,388 psi | 85% | 3386 fps | 96.2% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 53,809 psi | 85% | 3317 fps | 97.1% |
| Bofors RP15 | <<locked>> | 90% | 56,289 psi | 89% | 3409 fps | 99.8% |
| Bofors RP30 | <<locked>> | 94% | 55,405 psi | 88% | 3406 fps | 99.6% |
| Bofors RP5 | <<locked>> | 86% | 53,243 psi | 84% | 3353 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 92% | 53,185 psi | 84% | 3356 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 86% | 55,622 psi | 88% | 3356 fps | 99% |
| Hodgdon H4831 SC | <<locked>> | 86% | 54,621 psi | 87% | 3333 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 54,360 psi | 86% | 3258 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 54,795 psi | 87% | 3491 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,579 psi | 60% | 2221 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 56,550 psi | 90% | 3330 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 57,072 psi | 90% | 3333 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 56,086 psi | 89% | 3337 fps | 99.1% |
| IMR 7828 SSC | <<locked>> | 88% | 55,172 psi | 87% | 3412 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 53,563 psi | 85% | 3386 fps | 99.4% |
| Lovex S071 | <<locked>> | 92% | 54,578 psi | 87% | 3281 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 54,766 psi | 87% | 3415 fps | 100% |
| Norma MRP | <<locked>> | 84% | 53,156 psi | 84% | 3369 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 56,304 psi | 89% | 3435 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 90% | 54,882 psi | 87% | 3350 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,537 psi | 61% | 2270 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 55,724 psi | 88% | 3471 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 55,071 psi | 87% | 3425 fps | 98.8% |
| Rottweil R 904 | <<locked>> | 84% | 54,868 psi | 87% | 3320 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 84% | 53,606 psi | 85% | 3330 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 56,840 psi | 90% | 3389 fps | 99.9% |
| Somchem S361 | <<locked>> | 84% | 56,420 psi | 89% | 3307 fps | 99.1% |
| Somchem S365 | <<locked>> | 82% | 56,594 psi | 90% | 3323 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 53,824 psi | 85% | 3294 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 88% | 54,041 psi | 86% | 3278 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 86% | 56,724 psi | 90% | 3356 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 56,797 psi | 90% | 3445 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 90% | 53,650 psi | 85% | 3356 fps | 99% |
| Vihtavuori N568 | <<locked>> | 94% | 55,434 psi | 88% | 3428 fps | 98.4% |
| Vihtavuori N570 | <<locked>> | 96% | 56,956 psi | 90% | 3501 fps | 97.2% |
| Winchester StaBALL HD | <<locked>> | 88% | 55,303 psi | 88% | 3415 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 53,940 psi | 85% | 3291 fps | 99.7% |
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>> | 80% | 42,772 psi | 68% | 3051 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 80% | 44,831 psi | 71% | 3192 fps | 96.2% |
| ADI AR 2209 | <<locked>> | 80% | 47,253 psi | 75% | 3212 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 80% | 42,569 psi | 67% | 3136 fps | 96.7% |
| ADI AR 2217 | <<locked>> | 86% | 38,783 psi | 61% | 3038 fps | 95.9% |
| ADI AR 2218 | <<locked>> | 96% | 48,356 psi | 77% | 3340 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 82% | 30,792 psi | 49% | 2838 fps | 95.3% |
| Alliant Reloder-19 | <<locked>> | 80% | 47,079 psi | 75% | 3202 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 43,221 psi | 69% | 3143 fps | 98.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 41,698 psi | 66% | 3077 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 36,129 psi | 57% | 2992 fps | 99% |
| Alliant Reloder-26 | <<locked>> | 80% | 47,703 psi | 76% | 3264 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 49,806 psi | 79% | 3330 fps | 95.8% |
| Alliant Reloder-50 | <<locked>> | 98% | 49,559 psi | 79% | 3307 fps | 95.1% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 47,021 psi | 75% | 3176 fps | 95.3% |
| Bofors RP15 | <<locked>> | 80% | 40,074 psi | 64% | 3064 fps | 97% |
| Bofors RP30 | <<locked>> | 84% | 38,725 psi | 61% | 3041 fps | 95.9% |
| Bofors RP5 | <<locked>> | 80% | 43,221 psi | 69% | 3143 fps | 98.1% |
| Hodgdon H1000 | <<locked>> | 82% | 36,840 psi | 58% | 2986 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 80% | 44,962 psi | 71% | 3136 fps | 96.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 44,353 psi | 70% | 3127 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 50,865 psi | 81% | 3199 fps | 100% |
| Hodgdon Retumbo | 58.9 gr | 80% | 35,172 psi | 56% | 3025 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,224 psi | 45% | 1995 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 52,866 psi | 84% | 3268 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 53,287 psi | 84% | 3271 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 46,035 psi | 73% | 3136 fps | 97.3% |
| IMR 7828 SSC | <<locked>> | 80% | 41,205 psi | 65% | 3114 fps | 96.3% |
| IMR 8133 Enduron | <<locked>> | 90% | 37,449 psi | 59% | 3025 fps | 95.2% |
| Lovex S071 | <<locked>> | 80% | 36,579 psi | 58% | 2904 fps | 98.4% |
| Norma 217 | <<locked>> | 86% | 32,750 psi | 52% | 2910 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 46,021 psi | 73% | 3225 fps | 99.5% |
| Ramshot Grand | <<locked>> | 80% | 41,365 psi | 66% | 3123 fps | 96.8% |
| Ramshot Magnum | <<locked>> | 80% | 37,144 psi | 59% | 2976 fps | 97.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,776 psi | 46% | 2037 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 34,679 psi | 55% | 2992 fps | 97.2% |
| ReloadSwiss RS 80 | 69.9 gr | 88% | 43,366 psi | 69% | 3176 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 48,008 psi | 76% | 3186 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 80% | 46,717 psi | 74% | 3192 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 46,369 psi | 73% | 3186 fps | 98.8% |
| Somchem S361 | <<locked>> | 80% | 49,008 psi | 78% | 3169 fps | 97.9% |
| Somchem S365 | <<locked>> | 80% | 52,707 psi | 84% | 3264 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 47,123 psi | 75% | 3163 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 80% | 41,002 psi | 65% | 3015 fps | 98% |
| Vihtavuori N555 | <<locked>> | 80% | 46,325 psi | 73% | 3169 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 45,716 psi | 72% | 3219 fps | 97.1% |
| Vihtavuori N565 | <<locked>> | 82% | 40,422 psi | 64% | 3064 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 88% | 44,382 psi | 70% | 3199 fps | 95.7% |
| Vihtavuori N570 | 71.9 gr | 94% | 52,924 psi | 84% | 3422 fps | 96.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 40,132 psi | 64% | 3130 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 43,511 psi | 69% | 3081 fps | 98.2% |
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 58 powders for .244 H&H Mag. loaded with the .243 | 90gr | Hornady CX. ADI AR 2218 delivers the highest muzzle velocity at 3,520 fps; across all powders the maximum-charge window runs from 2,221 fps to 3,520 fps. Accurate 8700 gives the best case fill at 100 %, and 58 of the 58 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 90.0 gr projectile in 0.243" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 8700, ADI AR 2218, Alliant Reloder-50 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, ReloadSwiss RS 80, Vihtavuori N570 rank at the top here: for .244 H&H Mag. with the .243 | 90gr | Hornady CX they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 8700, IMR 7977 Enduron, 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.