Load Specifications
Load data in caliber .244 H&H Mag. with .243 | 85gr | MEN SPBT bullet and 49 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Alliant Reloder-33 and IMR 7828 SSC.
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>> | 88% | 56,884 psi | 90% | 3389 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 56,072 psi | 89% | 3494 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 84% | 54,215 psi | 86% | 3422 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 88% | 56,507 psi | 90% | 3494 fps | 99.2% |
| ADI AR 2217 | <<locked>> | 96% | 55,506 psi | 88% | 3465 fps | 99.4% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 56,434 psi | 89% | 3576 fps | 97.2% |
| ADI AR 2225 | <<locked>> | 98% | 54,679 psi | 87% | 3491 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 53,824 psi | 85% | 3406 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 88% | 56,971 psi | 90% | 3491 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 88% | 55,100 psi | 87% | 3399 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 55,448 psi | 88% | 3468 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 55,738 psi | 88% | 3484 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 53,882 psi | 85% | 3471 fps | 96.3% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 53,708 psi | 85% | 3376 fps | 96.6% |
| Bofors RP15 | <<locked>> | 90% | 56,449 psi | 89% | 3478 fps | 99.7% |
| Bofors RP30 | <<locked>> | 94% | 55,477 psi | 88% | 3478 fps | 99.4% |
| Bofors RP5 | <<locked>> | 88% | 56,971 psi | 90% | 3491 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 92% | 53,127 psi | 84% | 3422 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 86% | 55,521 psi | 88% | 3419 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 86% | 54,505 psi | 86% | 3402 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 54,549 psi | 86% | 3333 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 54,650 psi | 87% | 3560 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,623 psi | 60% | 2280 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 56,347 psi | 89% | 3396 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 86% | 56,028 psi | 89% | 3402 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 88% | 54,940 psi | 87% | 3474 fps | 99.1% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 53,490 psi | 85% | 3451 fps | 99.1% |
| Lovex S071 | <<locked>> | 92% | 55,129 psi | 87% | 3356 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 54,723 psi | 87% | 3481 fps | 100% |
| Norma MRP | <<locked>> | 84% | 53,388 psi | 85% | 3442 fps | 99.9% |
| Ramshot Grand | <<locked>> | 88% | 56,246 psi | 89% | 3501 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 90% | 54,868 psi | 87% | 3415 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,595 psi | 61% | 2333 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 55,695 psi | 88% | 3540 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 55,143 psi | 87% | 3488 fps | 98.5% |
| Rottweil R 904 | <<locked>> | 84% | 54,868 psi | 87% | 3389 fps | 99% |
| Rottweil R 905 | <<locked>> | 84% | 53,679 psi | 85% | 3399 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 56,855 psi | 90% | 3458 fps | 99.8% |
| Somchem S361 | <<locked>> | 84% | 56,333 psi | 89% | 3369 fps | 98.8% |
| Somchem S365 | <<locked>> | 82% | 56,507 psi | 90% | 3399 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 53,983 psi | 86% | 3366 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 88% | 53,998 psi | 86% | 3346 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 86% | 56,927 psi | 90% | 3432 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 56,608 psi | 90% | 3507 fps | 98.9% |
| Vihtavuori N565 | <<locked>> | 90% | 53,867 psi | 85% | 3425 fps | 98.7% |
| Vihtavuori N568 | <<locked>> | 94% | 55,579 psi | 88% | 3497 fps | 98.1% |
| Vihtavuori N570 | <<locked>> | 96% | 56,971 psi | 90% | 3566 fps | 96.7% |
| Winchester StaBALL HD | <<locked>> | 88% | 55,347 psi | 88% | 3491 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 53,867 psi | 85% | 3356 fps | 99.5% |
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% | 43,352 psi | 69% | 3130 fps | 99.4% |
| Accurate MAGPRO | <<locked>> | 80% | 45,005 psi | 71% | 3261 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 80% | 47,166 psi | 75% | 3278 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 80% | 42,525 psi | 67% | 3199 fps | 96.2% |
| ADI AR 2217 | <<locked>> | 86% | 38,986 psi | 62% | 3097 fps | 95.4% |
| ADI AR 2218 | <<locked>> | 98% | 52,243 psi | 83% | 3488 fps | 96% |
| ADI AR 2225 | <<locked>> | 84% | 33,417 psi | 53% | 2982 fps | 96.2% |
| Alliant Reloder-19 | <<locked>> | 80% | 47,268 psi | 75% | 3271 fps | 98.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 43,279 psi | 69% | 3205 fps | 97.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 42,047 psi | 67% | 3150 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 36,289 psi | 58% | 3058 fps | 98.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 47,819 psi | 76% | 3337 fps | 100% |
| Alliant Reloder-33 | 75.9 gr | 94% | 49,922 psi | 79% | 3392 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 50,212 psi | 80% | 3304 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 40,219 psi | 64% | 3130 fps | 96.6% |
| Bofors RP30 | <<locked>> | 84% | 39,015 psi | 62% | 3114 fps | 95.5% |
| Bofors RP5 | <<locked>> | 80% | 43,279 psi | 69% | 3205 fps | 97.6% |
| Hodgdon H1000 | <<locked>> | 82% | 37,101 psi | 59% | 3048 fps | 95.2% |
| Hodgdon H4831 | <<locked>> | 80% | 45,136 psi | 72% | 3205 fps | 96.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 44,338 psi | 70% | 3186 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 50,908 psi | 81% | 3271 fps | 100% |
| Hodgdon Retumbo | 59.9 gr | 80% | 35,505 psi | 56% | 3087 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,253 psi | 45% | 2051 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 52,794 psi | 84% | 3333 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 80% | 46,035 psi | 73% | 3196 fps | 96.8% |
| IMR 7828 SSC | 59.8 gr | 80% | 41,205 psi | 65% | 3176 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 92% | 40,495 psi | 64% | 3163 fps | 95.9% |
| Lovex S071 | <<locked>> | 80% | 37,159 psi | 59% | 2979 fps | 98.1% |
| Norma 217 | <<locked>> | 86% | 33,127 psi | 53% | 2976 fps | 95% |
| Norma MRP | <<locked>> | 80% | 46,238 psi | 73% | 3294 fps | 99.2% |
| Ramshot Grand | <<locked>> | 80% | 41,307 psi | 65% | 3186 fps | 96.2% |
| Ramshot Magnum | <<locked>> | 80% | 37,420 psi | 59% | 3041 fps | 96.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,993 psi | 46% | 2100 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 34,954 psi | 55% | 3054 fps | 96.7% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 43,772 psi | 69% | 3248 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 47,979 psi | 76% | 3248 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 80% | 46,775 psi | 74% | 3258 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 46,427 psi | 74% | 3251 fps | 98.4% |
| Somchem S361 | <<locked>> | 80% | 49,327 psi | 78% | 3235 fps | 97.5% |
| Somchem S365 | <<locked>> | 80% | 52,736 psi | 84% | 3337 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 47,268 psi | 75% | 3232 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 80% | 41,336 psi | 66% | 3084 fps | 97.7% |
| Vihtavuori N555 | <<locked>> | 80% | 46,601 psi | 74% | 3241 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 45,832 psi | 73% | 3284 fps | 96.6% |
| Vihtavuori N565 | <<locked>> | 82% | 40,770 psi | 65% | 3133 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 88% | 44,570 psi | 71% | 3261 fps | 95.1% |
| Vihtavuori N570 | <<locked>> | 94% | 52,779 psi | 84% | 3484 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 40,321 psi | 64% | 3199 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 43,555 psi | 69% | 3146 fps | 97.8% |
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 | 85gr | MEN SPBT. ADI AR 2218 delivers the highest muzzle velocity at 3,576 fps; across all powders the maximum-charge window runs from 2,280 fps to 3,576 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 85.0 gr projectile in 0.243" calls for a 1:10.0 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, Alliant Reloder-33, IMR 7828 SSC rank at the top here: for .244 H&H Mag. with the .243 | 85gr | MEN SPBT 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.