Load Specifications
Load data in caliber .244 H&H Mag. with .243 | 90gr | SUS-TAC HPPT bullet and 50 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Vihtavuori N570 and Alliant Reloder-33.
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>> | 86% | 53,417 psi | 85% | 3258 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 56,405 psi | 89% | 3432 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 84% | 54,636 psi | 87% | 3356 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 88% | 57,029 psi | 90% | 3435 fps | 99.5% |
| ADI AR 2217 | <<locked>> | 96% | 55,767 psi | 88% | 3402 fps | 99.6% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 56,768 psi | 90% | 3520 fps | 97.7% |
| ADI AR 2225 | <<locked>> | 98% | 54,882 psi | 87% | 3425 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 54,244 psi | 86% | 3343 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 86% | 53,606 psi | 85% | 3360 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 88% | 55,448 psi | 88% | 3330 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 55,840 psi | 89% | 3406 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 56,028 psi | 89% | 3415 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 54,128 psi | 86% | 3415 fps | 96.9% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 53,940 psi | 85% | 3396 fps | 96.3% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 53,809 psi | 85% | 3310 fps | 97% |
| Bofors RP15 | <<locked>> | 90% | 56,666 psi | 90% | 3412 fps | 99.8% |
| Bofors RP30 | <<locked>> | 94% | 55,724 psi | 88% | 3412 fps | 99.6% |
| Bofors RP5 | <<locked>> | 86% | 53,606 psi | 85% | 3360 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 92% | 53,316 psi | 85% | 3360 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 86% | 55,854 psi | 89% | 3356 fps | 99% |
| Hodgdon H4831 SC | <<locked>> | 86% | 54,839 psi | 87% | 3337 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 54,766 psi | 87% | 3264 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 54,824 psi | 87% | 3494 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,550 psi | 60% | 2211 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 56,637 psi | 90% | 3330 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 56,246 psi | 89% | 3337 fps | 99.1% |
| IMR 7828 SSC | <<locked>> | 88% | 55,405 psi | 88% | 3415 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 53,896 psi | 85% | 3392 fps | 99.4% |
| Lovex S071 | <<locked>> | 92% | 55,463 psi | 88% | 3294 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 55,216 psi | 88% | 3425 fps | 100% |
| Norma MRP | <<locked>> | 84% | 53,548 psi | 85% | 3373 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 56,608 psi | 90% | 3438 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 90% | 55,129 psi | 87% | 3350 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,566 psi | 61% | 2264 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 55,970 psi | 89% | 3478 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 55,550 psi | 88% | 3435 fps | 98.9% |
| Rottweil R 904 | <<locked>> | 84% | 54,984 psi | 87% | 3320 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 84% | 53,867 psi | 85% | 3333 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 53,490 psi | 85% | 3327 fps | 99.7% |
| Somchem S361 | <<locked>> | 84% | 56,753 psi | 90% | 3310 fps | 99.1% |
| Somchem S365 | <<locked>> | 82% | 56,869 psi | 90% | 3330 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 54,476 psi | 86% | 3301 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 88% | 54,404 psi | 86% | 3284 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 84% | 53,592 psi | 85% | 3301 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 56,840 psi | 90% | 3442 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 90% | 54,259 psi | 86% | 3366 fps | 99% |
| Vihtavuori N568 | <<locked>> | 94% | 55,767 psi | 88% | 3435 fps | 98.5% |
| Vihtavuori N570 | <<locked>> | 94% | 53,214 psi | 84% | 3428 fps | 96.2% |
| Winchester StaBALL HD | <<locked>> | 88% | 55,709 psi | 88% | 3425 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 54,273 psi | 86% | 3294 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% | 43,584 psi | 69% | 3071 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 80% | 45,237 psi | 72% | 3199 fps | 96.3% |
| ADI AR 2209 | <<locked>> | 80% | 47,630 psi | 75% | 3219 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 80% | 42,786 psi | 68% | 3143 fps | 96.8% |
| ADI AR 2217 | <<locked>> | 86% | 39,363 psi | 62% | 3048 fps | 96.1% |
| ADI AR 2218 | <<locked>> | 96% | 48,733 psi | 77% | 3346 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 82% | 31,459 psi | 50% | 2861 fps | 95.8% |
| Alliant Reloder-19 | <<locked>> | 80% | 47,471 psi | 75% | 3205 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 43,555 psi | 69% | 3150 fps | 98.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 42,250 psi | 67% | 3087 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 36,680 psi | 58% | 3005 fps | 99.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 48,153 psi | 76% | 3274 fps | 100% |
| Alliant Reloder-33 | 73.7 gr | 94% | 50,270 psi | 80% | 3340 fps | 95.8% |
| Alliant Reloder-50 | <<locked>> | 98% | 50,082 psi | 79% | 3317 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 47,253 psi | 75% | 3179 fps | 95.3% |
| Bofors RP15 | <<locked>> | 80% | 40,625 psi | 64% | 3074 fps | 97.2% |
| Bofors RP30 | <<locked>> | 82% | 36,796 psi | 58% | 2992 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 43,555 psi | 69% | 3150 fps | 98.1% |
| Hodgdon H1000 | <<locked>> | 82% | 37,231 psi | 59% | 2995 fps | 95.9% |
| Hodgdon H4831 | <<locked>> | 80% | 45,455 psi | 72% | 3146 fps | 96.9% |
| Hodgdon H4831 SC | <<locked>> | 80% | 44,570 psi | 71% | 3127 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 51,271 psi | 81% | 3205 fps | 100% |
| Hodgdon Retumbo | 58.1 gr | 80% | 35,752 psi | 57% | 3041 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,282 psi | 45% | 1988 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 53,214 psi | 84% | 3271 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 80% | 46,398 psi | 74% | 3140 fps | 97.3% |
| IMR 7828 SSC | <<locked>> | 80% | 41,684 psi | 66% | 3123 fps | 96.4% |
| IMR 8133 Enduron | <<locked>> | 90% | 38,014 psi | 60% | 3041 fps | 95.4% |
| Lovex S071 | <<locked>> | 80% | 37,565 psi | 60% | 2927 fps | 98.6% |
| Norma 217 | <<locked>> | 86% | 33,388 psi | 53% | 2930 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 46,427 psi | 74% | 3232 fps | 99.5% |
| Ramshot Grand | <<locked>> | 80% | 41,698 psi | 66% | 3130 fps | 96.9% |
| Ramshot Magnum | <<locked>> | 80% | 37,637 psi | 60% | 2989 fps | 97.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,051 psi | 46% | 2037 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 35,215 psi | 56% | 3012 fps | 97.5% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 44,048 psi | 70% | 3192 fps | 96.1% |
| Rottweil R 904 | <<locked>> | 80% | 48,370 psi | 77% | 3192 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 80% | 47,210 psi | 75% | 3199 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 46,862 psi | 74% | 3192 fps | 98.8% |
| Somchem S361 | <<locked>> | 80% | 49,530 psi | 79% | 3176 fps | 97.9% |
| Somchem S365 | <<locked>> | 80% | 53,229 psi | 84% | 3271 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 47,500 psi | 75% | 3169 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 80% | 41,553 psi | 66% | 3025 fps | 98.2% |
| Vihtavuori N555 | <<locked>> | 80% | 47,021 psi | 75% | 3179 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 46,021 psi | 73% | 3225 fps | 97.1% |
| Vihtavuori N565 | <<locked>> | 82% | 41,176 psi | 65% | 3081 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 88% | 44,933 psi | 71% | 3212 fps | 95.8% |
| Vihtavuori N570 | 69.4 gr | 92% | 49,487 psi | 78% | 3346 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 40,770 psi | 65% | 3146 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 43,845 psi | 69% | 3087 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 57 powders for .244 H&H Mag. loaded with the .243 | 90gr | SUS-TAC HPPT. ADI AR 2218 delivers the highest muzzle velocity at 3,520 fps; across all powders the maximum-charge window runs from 2,211 fps to 3,520 fps. Accurate 8700 gives the best case fill at 100 %, and 57 of the 57 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 1:8.0 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, Vihtavuori N570, Alliant Reloder-33 rank at the top here: for .244 H&H Mag. with the .243 | 90gr | SUS-TAC HPPT 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.