Load Specifications
Load data in caliber .244 H&H Mag. with .243 | 90gr | Lapua ScenarL bullet and 48 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N570, Hodgdon Retumbo and ReloadSwiss RS 76.
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% | 54,694 psi | 87% | 3278 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 53,606 psi | 85% | 3379 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 84% | 55,695 psi | 88% | 3376 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 86% | 54,331 psi | 86% | 3386 fps | 99.2% |
| ADI AR 2217 | <<locked>> | 94% | 53,243 psi | 84% | 3353 fps | 99.4% |
| ADI AR 2218 | <<locked>> | 98% | 53,925 psi | 85% | 3465 fps | 97.1% |
| ADI AR 2225 | <<locked>> | 98% | 56,362 psi | 89% | 3448 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 55,245 psi | 88% | 3360 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 86% | 54,868 psi | 87% | 3383 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 88% | 56,536 psi | 90% | 3343 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 53,490 psi | 85% | 3363 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 53,505 psi | 85% | 3373 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 55,753 psi | 88% | 3445 fps | 97.3% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 55,811 psi | 88% | 3432 fps | 96.8% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 54,998 psi | 87% | 3337 fps | 97.4% |
| Bofors RP15 | <<locked>> | 88% | 54,099 psi | 86% | 3363 fps | 99.7% |
| Bofors RP30 | <<locked>> | 92% | 53,345 psi | 85% | 3366 fps | 99.4% |
| Bofors RP5 | <<locked>> | 86% | 54,868 psi | 87% | 3383 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 92% | 54,520 psi | 86% | 3379 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 84% | 53,272 psi | 84% | 3307 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 86% | 56,057 psi | 89% | 3360 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 55,927 psi | 89% | 3278 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 56,550 psi | 90% | 3520 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,724 psi | 60% | 2224 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 53,766 psi | 85% | 3291 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 88% | 56,463 psi | 89% | 3432 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 55,390 psi | 88% | 3415 fps | 99.6% |
| Lovex S071 | <<locked>> | 92% | 56,492 psi | 90% | 3310 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 56,492 psi | 90% | 3442 fps | 100% |
| Norma MRP | <<locked>> | 84% | 54,897 psi | 87% | 3396 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 53,867 psi | 85% | 3386 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 90% | 56,623 psi | 90% | 3376 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,725 psi | 61% | 2274 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 53,432 psi | 85% | 3428 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 56,971 psi | 90% | 3455 fps | 99.1% |
| Rottweil R 904 | <<locked>> | 84% | 55,985 psi | 89% | 3337 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 84% | 54,940 psi | 87% | 3350 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 54,563 psi | 86% | 3346 fps | 99.8% |
| Somchem S361 | <<locked>> | 82% | 54,012 psi | 86% | 3261 fps | 98.8% |
| Somchem S385 | <<locked>> | 84% | 55,448 psi | 88% | 3317 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 55,347 psi | 88% | 3301 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 84% | 54,752 psi | 87% | 3320 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 54,302 psi | 86% | 3392 fps | 98.9% |
| Vihtavuori N565 | <<locked>> | 90% | 55,477 psi | 88% | 3386 fps | 99.2% |
| Vihtavuori N568 | <<locked>> | 92% | 53,330 psi | 85% | 3386 fps | 98.1% |
| Vihtavuori N570 | <<locked>> | 94% | 54,708 psi | 87% | 3455 fps | 96.6% |
| Winchester StaBALL HD | <<locked>> | 86% | 52,953 psi | 84% | 3373 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 55,216 psi | 88% | 3310 fps | 99.8% |
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% | 44,599 psi | 71% | 3087 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 80% | 46,456 psi | 74% | 3228 fps | 96.7% |
| ADI AR 2209 | <<locked>> | 80% | 48,428 psi | 77% | 3235 fps | 99% |
| ADI AR 2213 | <<locked>> | 80% | 43,801 psi | 69% | 3163 fps | 97.1% |
| ADI AR 2217 | <<locked>> | 84% | 37,434 psi | 59% | 2995 fps | 95.4% |
| ADI AR 2218 | <<locked>> | 96% | 49,922 psi | 79% | 3376 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 82% | 32,213 psi | 51% | 2884 fps | 96.3% |
| Alliant Reloder-19 | <<locked>> | 80% | 48,501 psi | 77% | 3228 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 44,585 psi | 71% | 3173 fps | 98.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 43,308 psi | 69% | 3107 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 37,449 psi | 59% | 3025 fps | 99.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 49,545 psi | 79% | 3301 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 47,805 psi | 76% | 3284 fps | 95.2% |
| Alliant Reloder-50 | <<locked>> | 98% | 51,648 psi | 82% | 3350 fps | 95.7% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 48,225 psi | 76% | 3199 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 41,408 psi | 66% | 3094 fps | 97.5% |
| Bofors RP30 | <<locked>> | 82% | 37,579 psi | 60% | 3012 fps | 95.5% |
| Bofors RP5 | <<locked>> | 80% | 44,585 psi | 71% | 3173 fps | 98.4% |
| Hodgdon H1000 | <<locked>> | 80% | 35,418 psi | 56% | 2943 fps | 95.1% |
| Hodgdon H4831 | <<locked>> | 80% | 46,398 psi | 74% | 3166 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 80% | 45,527 psi | 72% | 3146 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 52,185 psi | 83% | 3219 fps | 100% |
| Hodgdon Retumbo | 59.2 gr | 80% | 36,666 psi | 58% | 3068 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,224 psi | 45% | 1991 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 47,094 psi | 75% | 3156 fps | 97.6% |
| IMR 7828 SSC | <<locked>> | 80% | 42,496 psi | 67% | 3140 fps | 96.8% |
| IMR 8133 Enduron | <<locked>> | 90% | 39,131 psi | 62% | 3068 fps | 96% |
| Lovex S071 | <<locked>> | 80% | 38,363 psi | 61% | 2946 fps | 98.8% |
| Norma 217 | <<locked>> | 84% | 31,995 psi | 51% | 2884 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 47,456 psi | 75% | 3255 fps | 99.7% |
| Ramshot Grand | <<locked>> | 80% | 42,786 psi | 68% | 3156 fps | 97.3% |
| Ramshot Magnum | <<locked>> | 80% | 38,595 psi | 61% | 3009 fps | 97.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,008 psi | 46% | 2041 fps | 100% |
| ReloadSwiss RS 76 | 63.3 gr | 80% | 36,100 psi | 57% | 3031 fps | 97.9% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 41,829 psi | 66% | 3136 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 49,124 psi | 78% | 3205 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 80% | 48,008 psi | 76% | 3215 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 47,674 psi | 76% | 3209 fps | 99% |
| Somchem S361 | <<locked>> | 80% | 50,372 psi | 80% | 3192 fps | 98.2% |
| Somchem S385 | <<locked>> | 80% | 48,501 psi | 77% | 3186 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 80% | 42,482 psi | 67% | 3045 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 80% | 47,921 psi | 76% | 3196 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 47,036 psi | 75% | 3241 fps | 97.5% |
| Vihtavuori N565 | <<locked>> | 80% | 39,276 psi | 62% | 3031 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 86% | 42,902 psi | 68% | 3159 fps | 95.2% |
| Vihtavuori N570 | 70.6 gr | 92% | 50,691 psi | 80% | 3369 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 42,018 psi | 67% | 3169 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 44,788 psi | 71% | 3107 fps | 98.5% |
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 55 powders for .244 H&H Mag. loaded with the .243 | 90gr | Lapua ScenarL. Hodgdon Retumbo delivers the highest muzzle velocity at 3,520 fps; across all powders the maximum-charge window runs from 2,224 fps to 3,520 fps. Accurate 8700 gives the best case fill at 100 %, and 55 of the 55 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, Alliant Reloder-50, Hodgdon TrailBoss 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. Vihtavuori N570, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for .244 H&H Mag. with the .243 | 90gr | Lapua ScenarL 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.