Load Specifications
Load data in caliber .244 H&H Mag. with .243 | 85gr | Lehigh Defense Controlled Chaos bullet and 53 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 N568.
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% | 55,869 psi | 89% | 3369 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 54,824 psi | 87% | 3471 fps | 98.1% |
| ADI AR 2209 | <<locked>> | 86% | 57,029 psi | 90% | 3474 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 88% | 55,477 psi | 88% | 3481 fps | 99% |
| ADI AR 2217 | <<locked>> | 96% | 54,346 psi | 86% | 3445 fps | 99.2% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 54,984 psi | 87% | 3547 fps | 96.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 56,942 psi | 90% | 3533 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 56,869 psi | 90% | 3468 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 56,492 psi | 90% | 3458 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 88% | 55,956 psi | 89% | 3474 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 88% | 54,027 psi | 86% | 3383 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 54,128 psi | 86% | 3448 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 54,592 psi | 87% | 3468 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 56,855 psi | 90% | 3537 fps | 97% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 56,217 psi | 89% | 3425 fps | 97.1% |
| Bofors RP15 | <<locked>> | 90% | 55,187 psi | 87% | 3458 fps | 99.6% |
| Bofors RP30 | <<locked>> | 94% | 54,259 psi | 86% | 3455 fps | 99.2% |
| Bofors RP5 | <<locked>> | 88% | 55,956 psi | 89% | 3474 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 94% | 55,637 psi | 88% | 3471 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 86% | 54,563 psi | 86% | 3402 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 86% | 53,577 psi | 85% | 3383 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 56,971 psi | 90% | 3376 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 57,043 psi | 90% | 3606 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,449 psi | 59% | 2270 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 55,579 psi | 88% | 3386 fps | 99.9% |
| IMR 4831 | <<locked>> | 82% | 56,159 psi | 89% | 3389 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 55,100 psi | 87% | 3386 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 88% | 53,867 psi | 85% | 3455 fps | 98.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 52,286 psi | 83% | 3432 fps | 98.9% |
| Lovex S071 | <<locked>> | 92% | 53,853 psi | 85% | 3337 fps | 100% |
| Norma 204 | <<locked>> | 82% | 56,710 psi | 90% | 3445 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 53,156 psi | 84% | 3458 fps | 99.9% |
| Norma MRP | <<locked>> | 86% | 55,869 psi | 89% | 3491 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 54,853 psi | 87% | 3478 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 82% | 56,695 psi | 90% | 3442 fps | 100% |
| Ramshot Magnum | <<locked>> | 90% | 53,606 psi | 85% | 3396 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,421 psi | 61% | 2326 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 54,099 psi | 86% | 3520 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 53,737 psi | 85% | 3468 fps | 98.2% |
| Rottweil R 904 | <<locked>> | 84% | 53,911 psi | 85% | 3373 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 86% | 56,159 psi | 89% | 3445 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 55,753 psi | 88% | 3442 fps | 99.7% |
| Somchem S361 | <<locked>> | 84% | 55,506 psi | 88% | 3356 fps | 98.6% |
| Somchem S365 | <<locked>> | 82% | 55,564 psi | 88% | 3386 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 56,695 psi | 90% | 3412 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 90% | 56,594 psi | 90% | 3392 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 86% | 55,796 psi | 88% | 3415 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 55,347 psi | 88% | 3488 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 92% | 56,478 psi | 90% | 3474 fps | 99% |
| Vihtavuori N568 | <<locked>> | 94% | 54,143 psi | 86% | 3471 fps | 97.7% |
| Vihtavuori N570 | <<locked>> | 96% | 55,506 psi | 88% | 3540 fps | 96.2% |
| Winchester StaBALL HD | <<locked>> | 88% | 53,751 psi | 85% | 3468 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 56,521 psi | 90% | 3406 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% | 42,351 psi | 67% | 3107 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 80% | 44,034 psi | 70% | 3238 fps | 95.3% |
| ADI AR 2209 | <<locked>> | 80% | 46,383 psi | 74% | 3261 fps | 98.2% |
| ADI AR 2213 | <<locked>> | 80% | 41,756 psi | 66% | 3179 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 88% | 40,988 psi | 65% | 3153 fps | 96.1% |
| ADI AR 2218 | <<locked>> | 98% | 51,097 psi | 81% | 3461 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 84% | 32,663 psi | 52% | 2956 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 53,229 psi | 84% | 3402 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 46,282 psi | 73% | 3251 fps | 98.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 42,482 psi | 67% | 3192 fps | 97.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 41,002 psi | 65% | 3130 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 35,520 psi | 56% | 3041 fps | 98.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 46,702 psi | 74% | 3320 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 52,533 psi | 83% | 3451 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 49,269 psi | 78% | 3287 fps | 95.3% |
| Bofors RP15 | <<locked>> | 80% | 39,436 psi | 63% | 3110 fps | 96.2% |
| Bofors RP30 | <<locked>> | 84% | 38,058 psi | 60% | 3087 fps | 95% |
| Bofors RP5 | <<locked>> | 80% | 42,482 psi | 67% | 3192 fps | 97.4% |
| Hodgdon H1000 | <<locked>> | 84% | 38,798 psi | 61% | 3097 fps | 95.9% |
| Hodgdon H4831 | <<locked>> | 80% | 44,208 psi | 70% | 3186 fps | 96% |
| Hodgdon H4831 SC | <<locked>> | 80% | 43,598 psi | 69% | 3169 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 50,024 psi | 79% | 3258 fps | 100% |
| Hodgdon Retumbo | 58.8 gr | 80% | 34,621 psi | 55% | 3064 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,123 psi | 45% | 2041 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 51,996 psi | 82% | 3317 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 52,460 psi | 83% | 3327 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 45,310 psi | 72% | 3182 fps | 96.5% |
| IMR 7828 SSC | <<locked>> | 80% | 40,422 psi | 64% | 3156 fps | 95.4% |
| IMR 8133 Enduron | <<locked>> | 92% | 39,363 psi | 62% | 3140 fps | 95.4% |
| Lovex S071 | <<locked>> | 80% | 36,361 psi | 58% | 2959 fps | 97.9% |
| Norma 204 | <<locked>> | 80% | 52,968 psi | 84% | 3376 fps | 99.2% |
| Norma 217 | <<locked>> | 88% | 34,563 psi | 55% | 3025 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 45,179 psi | 72% | 3274 fps | 99% |
| Ramshot Grand | <<locked>> | 80% | 40,495 psi | 64% | 3166 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 53,011 psi | 84% | 3376 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 36,492 psi | 58% | 3022 fps | 96.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,863 psi | 46% | 2090 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 34,127 psi | 54% | 3035 fps | 96.3% |
| ReloadSwiss RS 80 | 71.4 gr | 90% | 45,934 psi | 73% | 3301 fps | 96.2% |
| Rottweil R 904 | <<locked>> | 80% | 47,224 psi | 75% | 3232 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 80% | 45,934 psi | 73% | 3241 fps | 98.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 45,585 psi | 72% | 3235 fps | 98.2% |
| Somchem S361 | <<locked>> | 80% | 48,269 psi | 77% | 3215 fps | 97.2% |
| Somchem S365 | <<locked>> | 80% | 51,764 psi | 82% | 3323 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 46,470 psi | 74% | 3215 fps | 99% |
| Vihtavuori N165 | <<locked>> | 80% | 40,408 psi | 64% | 3064 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 80% | 45,716 psi | 72% | 3225 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 44,860 psi | 71% | 3264 fps | 96.3% |
| Vihtavuori N565 | <<locked>> | 84% | 42,757 psi | 68% | 3186 fps | 95.9% |
| Vihtavuori N568 | 69.1 gr | 90% | 46,934 psi | 74% | 3320 fps | 95.9% |
| Vihtavuori N570 | <<locked>> | 94% | 51,605 psi | 82% | 3461 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 39,088 psi | 62% | 3179 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 42,830 psi | 68% | 3130 fps | 97.5% |
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 58 powders for .244 H&H Mag. loaded with the .243 | 85gr | Lehigh Defense Controlled Chaos. Hodgdon Retumbo delivers the highest muzzle velocity at 3,606 fps; across all powders the maximum-charge window runs from 2,270 fps to 3,606 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 59–90 %, leaving at least 10 % headroom. The 85.0 gr projectile in 0.243" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 8700, ADI AR 2218, ADI AR 2225 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 N568 rank at the top here: for .244 H&H Mag. with the .243 | 85gr | Lehigh Defense Controlled Chaos they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 8700, IMR 7977 Enduron, SNPE Vectan SP 13 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.