Load Specifications
Load data in caliber .244 H&H Mag. with .243 | 77gr | Ferrobull Tripple Expand Jagd bullet and 66 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 76 and Vihtavuori N560.
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>> | 90% | 54,694 psi | 87% | 3481 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 54,955 psi | 87% | 3527 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 54,085 psi | 86% | 3583 fps | 97.2% |
| ADI AR 2209 | <<locked>> | 88% | 56,565 psi | 90% | 3596 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 90% | 54,969 psi | 87% | 3599 fps | 98.4% |
| ADI AR 2217 | <<locked>> | 98% | 53,519 psi | 85% | 3553 fps | 98.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 51,822 psi | 82% | 3566 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 56,420 psi | 89% | 3602 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 56,217 psi | 89% | 3583 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 90% | 55,230 psi | 88% | 3593 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 92% | 56,608 psi | 90% | 3566 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 57,043 psi | 90% | 3638 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 53,505 psi | 85% | 3586 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 56,188 psi | 89% | 3543 fps | 96.2% |
| Bofors RP15 | <<locked>> | 92% | 54,433 psi | 86% | 3576 fps | 99% |
| Bofors RP30 | <<locked>> | 98% | 56,942 psi | 90% | 3635 fps | 99.1% |
| Bofors RP5 | <<locked>> | 90% | 55,230 psi | 88% | 3593 fps | 99.2% |
| Bofors RP7 | <<locked>> | 82% | 56,594 psi | 90% | 3533 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 96% | 55,071 psi | 87% | 3586 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 82% | 56,782 psi | 90% | 3589 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 88% | 54,259 psi | 86% | 3520 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 88% | 53,243 psi | 84% | 3504 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 56,536 psi | 90% | 3510 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 55,985 psi | 89% | 3724 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,217 psi | 59% | 2375 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 55,405 psi | 88% | 3514 fps | 99.6% |
| IMR 4831 | <<locked>> | 84% | 55,564 psi | 88% | 3517 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 54,868 psi | 87% | 3507 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 92% | 56,913 psi | 90% | 3645 fps | 98.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 47,050 psi | 75% | 3445 fps | 97% |
| Lovex S065 | <<locked>> | 82% | 55,303 psi | 88% | 3494 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 53,795 psi | 85% | 3488 fps | 99.8% |
| Lovex S071 | <<locked>> | 96% | 56,275 psi | 89% | 3510 fps | 100% |
| Norma 204 | <<locked>> | 84% | 56,579 psi | 90% | 3573 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 47,747 psi | 76% | 3478 fps | 99% |
| Norma MRP | <<locked>> | 88% | 55,216 psi | 88% | 3612 fps | 99.8% |
| Norma URP | <<locked>> | 82% | 53,577 psi | 85% | 3510 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 54,041 psi | 86% | 3593 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 84% | 56,362 psi | 89% | 3573 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 56,869 psi | 90% | 3583 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,087 psi | 60% | 2431 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 55,463 psi | 88% | 3550 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 54,288 psi | 86% | 3579 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 52,997 psi | 84% | 3629 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 56,884 psi | 90% | 3648 fps | 98.1% |
| Rottweil R 904 | <<locked>> | 86% | 53,635 psi | 85% | 3494 fps | 98.1% |
| Rottweil R 905 | <<locked>> | 88% | 55,724 psi | 88% | 3573 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 82% | 56,594 psi | 90% | 3533 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 82% | 55,303 psi | 88% | 3494 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 53,795 psi | 85% | 3488 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 54,534 psi | 86% | 3435 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 55,347 psi | 88% | 3566 fps | 99.2% |
| Somchem S361 | <<locked>> | 86% | 55,230 psi | 88% | 3474 fps | 97.9% |
| Somchem S365 | <<locked>> | 84% | 54,679 psi | 87% | 3514 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 56,159 psi | 89% | 3533 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 82% | 55,056 psi | 87% | 3501 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 56,072 psi | 89% | 3510 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 82% | 54,592 psi | 87% | 3504 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 54,650 psi | 87% | 3533 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 54,795 psi | 87% | 3602 fps | 97.9% |
| Vihtavuori N565 | <<locked>> | 94% | 55,463 psi | 88% | 3583 fps | 98.3% |
| Vihtavuori N568 | <<locked>> | 96% | 52,939 psi | 84% | 3570 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 54,926 psi | 87% | 3438 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 57,043 psi | 90% | 3596 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 92% | 56,202 psi | 89% | 3652 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 56,391 psi | 89% | 3530 fps | 99.3% |
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% | 38,450 psi | 61% | 3130 fps | 97.7% |
| Accurate 4350 | <<locked>> | 80% | 51,329 psi | 81% | 3458 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 46,456 psi | 74% | 3419 fps | 95.1% |
| ADI AR 2209 | <<locked>> | 80% | 42,627 psi | 68% | 3297 fps | 96.4% |
| ADI AR 2213 | <<locked>> | 84% | 44,135 psi | 70% | 3360 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 92% | 43,091 psi | 68% | 3320 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 88% | 33,794 psi | 54% | 3097 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,095 psi | 78% | 3465 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,786 psi | 68% | 3291 fps | 96.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,580 psi | 61% | 3209 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,217 psi | 59% | 3166 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,981 psi | 51% | 3041 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,018 psi | 67% | 3343 fps | 99.5% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 52,707 psi | 84% | 3474 fps | 95.3% |
| Bofors RP15 | <<locked>> | 84% | 41,147 psi | 65% | 3274 fps | 95.8% |
| Bofors RP30 | <<locked>> | 90% | 42,496 psi | 67% | 3320 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 38,580 psi | 61% | 3209 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 53,113 psi | 84% | 3465 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 88% | 40,973 psi | 65% | 3268 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 53,011 psi | 84% | 3520 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 84% | 47,079 psi | 75% | 3369 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 84% | 46,195 psi | 73% | 3350 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,035 psi | 73% | 3317 fps | 100% |
| Hodgdon Retumbo | 63.8 gr | 86% | 38,769 psi | 61% | 3307 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,789 psi | 44% | 2136 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,399 psi | 77% | 3376 fps | 98.8% |
| IMR 4831 | <<locked>> | 80% | 48,573 psi | 77% | 3389 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 45,020 psi | 71% | 3294 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 84% | 42,598 psi | 68% | 3333 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 98% | 43,859 psi | 70% | 3369 fps | 96% |
| Lovex S065 | <<locked>> | 80% | 51,924 psi | 82% | 3432 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 50,285 psi | 80% | 3415 fps | 99.4% |
| Lovex S071 | <<locked>> | 80% | 32,808 psi | 52% | 2972 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 49,197 psi | 78% | 3425 fps | 98% |
| Norma 217 | <<locked>> | 92% | 35,433 psi | 56% | 3159 fps | 95% |
| Norma MRP | <<locked>> | 80% | 40,843 psi | 65% | 3297 fps | 97.3% |
| Norma URP | <<locked>> | 80% | 49,966 psi | 79% | 3442 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 42,685 psi | 68% | 3340 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 49,153 psi | 78% | 3432 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 84% | 38,363 psi | 61% | 3186 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,427 psi | 45% | 2185 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,706 psi | 82% | 3478 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,241 psi | 80% | 3501 fps | 100% |
| ReloadSwiss RS 76 | 66.7 gr | 84% | 35,607 psi | 56% | 3189 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 48,385 psi | 77% | 3474 fps | 96% |
| Rottweil R 904 | <<locked>> | 80% | 43,729 psi | 69% | 3278 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 80% | 42,047 psi | 67% | 3271 fps | 96.4% |
| Rottweil R 907 | <<locked>> | 80% | 53,113 psi | 84% | 3465 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,924 psi | 82% | 3432 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 50,285 psi | 80% | 3415 fps | 99.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,952 psi | 81% | 3369 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,713 psi | 66% | 3268 fps | 96.3% |
| Somchem S361 | <<locked>> | 80% | 44,831 psi | 71% | 3258 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 47,297 psi | 75% | 3379 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,583 psi | 67% | 3251 fps | 97.4% |
| Vihtavuori N160 | <<locked>> | 80% | 51,590 psi | 82% | 3435 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,028 psi | 59% | 3094 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 50,778 psi | 80% | 3432 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,423 psi | 66% | 3261 fps | 99.7% |
| Vihtavuori N560 | 64.7 gr | 84% | 47,326 psi | 75% | 3445 fps | 96% |
| Vihtavuori N565 | <<locked>> | 88% | 44,643 psi | 71% | 3350 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 94% | 49,197 psi | 78% | 3491 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,329 psi | 81% | 3379 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,258 psi | 84% | 3527 fps | 99.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 34,374 psi | 54% | 3186 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,131 psi | 62% | 3156 fps | 95.3% |
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 72 powders for .244 H&H Mag. loaded with the .243 | 77gr | Ferrobull Tripple Expand Jagd. Hodgdon Retumbo delivers the highest muzzle velocity at 3,724 fps; across all powders the maximum-charge window runs from 2,375 fps to 3,724 fps. ADI AR 2218 gives the best case fill at 100 %, and 72 of the 72 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 77.0 gr projectile in 0.243" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. ADI AR 2218, ADI AR 2225, Alliant Reloder-33 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 76, Vihtavuori N560 rank at the top here: for .244 H&H Mag. with the .243 | 77gr | Ferrobull Tripple Expand Jagd they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2218, Alliant Reloder-50, IMR 7977 Enduron 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.