Load Specifications
Load data in caliber .244 H&H Mag. with .243 | 65gr | Berger ND 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>> | 92% | 54,824 psi | 87% | 3684 fps | 99.6% |
| Accurate 4350 | <<locked>> | 84% | 55,172 psi | 87% | 3743 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 56,637 psi | 90% | 3855 fps | 97.5% |
| ADI AR 2209 | <<locked>> | 90% | 56,579 psi | 90% | 3799 fps | 98.3% |
| ADI AR 2213 | <<locked>> | 92% | 54,636 psi | 87% | 3786 fps | 96.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,055 psi | 84% | 3727 fps | 97.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,688 psi | 76% | 3658 fps | 98.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 55,941 psi | 89% | 3812 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 55,999 psi | 89% | 3776 fps | 98.3% |
| Alliant Reloder-22 | <<locked>> | 92% | 54,926 psi | 87% | 3783 fps | 98.2% |
| Alliant Reloder-23 | <<locked>> | 94% | 56,188 psi | 89% | 3770 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 56,057 psi | 89% | 3829 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 52,953 psi | 84% | 3783 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 54,128 psi | 86% | 3763 fps | 97.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 56,043 psi | 89% | 3812 fps | 97.9% |
| Bofors RP5 | <<locked>> | 92% | 54,926 psi | 87% | 3783 fps | 98.2% |
| Bofors RP7 | <<locked>> | 82% | 53,548 psi | 85% | 3675 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 98% | 54,520 psi | 86% | 3763 fps | 98% |
| Hodgdon H414 | <<locked>> | 84% | 57,014 psi | 90% | 3802 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 82% | 55,492 psi | 88% | 3750 fps | 98.3% |
| Hodgdon H4831 | <<locked>> | 90% | 54,273 psi | 86% | 3711 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 56,565 psi | 90% | 3727 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 54,882 psi | 87% | 3898 fps | 99.1% |
| Hodgdon Superformance | <<locked>> | 82% | 53,954 psi | 86% | 3750 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,956 psi | 59% | 2552 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 55,593 psi | 88% | 3720 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 54,926 psi | 87% | 3707 fps | 99% |
| IMR 4831 | <<locked>> | 86% | 55,666 psi | 88% | 3730 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 55,216 psi | 88% | 3704 fps | 96.6% |
| IMR 7828 SSC | <<locked>> | 94% | 56,376 psi | 89% | 3829 fps | 97.4% |
| Lovex S065 | <<locked>> | 84% | 55,869 psi | 89% | 3714 fps | 99.8% |
| Lovex S070 | <<locked>> | 84% | 53,983 psi | 86% | 3691 fps | 99.1% |
| Lovex S071 | <<locked>> | 98% | 56,173 psi | 89% | 3707 fps | 99.7% |
| Norma 204 | <<locked>> | 86% | 56,782 psi | 90% | 3780 fps | 98.2% |
| Norma 217ᴾ | <<locked>> | 100% | 43,395 psi | 69% | 3560 fps | 96.6% |
| Norma MRP | <<locked>> | 90% | 54,926 psi | 87% | 3809 fps | 99.1% |
| Norma URP | <<locked>> | 84% | 53,505 psi | 85% | 3717 fps | 99.9% |
| Ramshot Grand | <<locked>> | 92% | 53,229 psi | 84% | 3770 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 86% | 56,449 psi | 89% | 3783 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 96% | 56,565 psi | 90% | 3770 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,768 psi | 60% | 2608 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 55,506 psi | 88% | 3760 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 53,925 psi | 85% | 3783 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 56,579 psi | 90% | 3898 fps | 99.9% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 56,246 psi | 89% | 3822 fps | 96.6% |
| Rottweil R 904 | <<locked>> | 88% | 53,766 psi | 85% | 3688 fps | 96.8% |
| Rottweil R 905 | <<locked>> | 90% | 55,506 psi | 88% | 3766 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 82% | 53,548 psi | 85% | 3675 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 84% | 55,869 psi | 89% | 3714 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 84% | 53,983 psi | 86% | 3691 fps | 99.1% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 55,158 psi | 87% | 3645 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 55,085 psi | 87% | 3760 fps | 98.2% |
| Somchem S361 | <<locked>> | 88% | 55,637 psi | 88% | 3665 fps | 96.6% |
| Somchem S365 | <<locked>> | 86% | 54,447 psi | 86% | 3727 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 56,318 psi | 89% | 3737 fps | 99% |
| Vihtavuori N150 | <<locked>> | 82% | 55,912 psi | 89% | 3655 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 55,230 psi | 88% | 3711 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 55,999 psi | 89% | 3704 fps | 98.8% |
| Vihtavuori N550 | <<locked>> | 84% | 54,723 psi | 87% | 3711 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 90% | 54,389 psi | 86% | 3740 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,607 psi | 87% | 3796 fps | 96.4% |
| Vihtavuori N565 | <<locked>> | 96% | 55,143 psi | 87% | 3766 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 55,274 psi | 88% | 3648 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 57,014 psi | 90% | 3802 fps | 99.4% |
| Winchester StaBALL HD | <<locked>> | 94% | 54,897 psi | 87% | 3848 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 56,362 psi | 89% | 3720 fps | 98.4% |
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% | 35,824 psi | 57% | 3235 fps | 95.1% |
| Accurate 4350 | <<locked>> | 80% | 47,848 psi | 76% | 3593 fps | 99.5% |
| Accurate High Country | <<locked>> | 86% | 48,791 psi | 77% | 3681 fps | 95.4% |
| ADI AR 2209 | <<locked>> | 84% | 45,818 psi | 73% | 3563 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 90% | 50,923 psi | 81% | 3707 fps | 96% |
| ADI AR 2217 | <<locked>> | 98% | 49,342 psi | 78% | 3642 fps | 96% |
| ADI AR 2225 | <<locked>> | 94% | 38,725 psi | 61% | 3412 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,643 psi | 72% | 3602 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 84% | 45,701 psi | 72% | 3550 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 86% | 44,338 psi | 70% | 3547 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,287 psi | 54% | 3274 fps | 98.1% |
| Alliant Reloder-25 | <<locked>> | 84% | 34,360 psi | 54% | 3284 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,334 psi | 61% | 3435 fps | 97.5% |
| Bofors RP15 | <<locked>> | 88% | 43,947 psi | 70% | 3533 fps | 95.1% |
| Bofors RP30 | <<locked>> | 96% | 48,602 psi | 77% | 3652 fps | 96% |
| Bofors RP5 | <<locked>> | 86% | 44,338 psi | 70% | 3547 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 50,067 psi | 79% | 3602 fps | 97.9% |
| Hodgdon H1000 | <<locked>> | 94% | 47,224 psi | 75% | 3596 fps | 96% |
| Hodgdon H414 | <<locked>> | 80% | 49,574 psi | 79% | 3648 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 80% | 51,880 psi | 82% | 3675 fps | 97.6% |
| Hodgdon H4831 | <<locked>> | 88% | 50,633 psi | 80% | 3635 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,047 psi | 68% | 3455 fps | 99.8% |
| Hodgdon Retumbo | 69.4 gr | 92% | 44,353 psi | 70% | 3638 fps | 96.3% |
| Hodgdon Superformance | <<locked>> | 80% | 49,821 psi | 79% | 3665 fps | 98.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,543 psi | 44% | 2300 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,571 psi | 72% | 3501 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,459 psi | 82% | 3635 fps | 98.5% |
| IMR 4831 | <<locked>> | 80% | 45,339 psi | 72% | 3520 fps | 99.3% |
| IMR 4955 Enduron | <<locked>> | 88% | 51,692 psi | 82% | 3629 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 90% | 48,849 psi | 77% | 3668 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 48,994 psi | 78% | 3570 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 47,485 psi | 75% | 3553 fps | 98% |
| Lovex S071 | <<locked>> | 86% | 37,594 psi | 60% | 3287 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 46,006 psi | 73% | 3543 fps | 95.6% |
| Norma 217 | <<locked>> | 98% | 40,292 psi | 64% | 3471 fps | 95.4% |
| Norma MRP | <<locked>> | 82% | 40,669 psi | 64% | 3478 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 46,818 psi | 74% | 3576 fps | 99.4% |
| Ramshot Grand | <<locked>> | 90% | 49,400 psi | 78% | 3684 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 45,905 psi | 73% | 3556 fps | 98.2% |
| Ramshot Magnum | <<locked>> | 88% | 41,220 psi | 65% | 3435 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,152 psi | 45% | 2352 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,153 psi | 76% | 3609 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,325 psi | 73% | 3622 fps | 99.2% |
| ReloadSwiss RS 76 | 71 gr | 88% | 38,334 psi | 61% | 3435 fps | 95% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 51,895 psi | 82% | 3734 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 86% | 50,212 psi | 80% | 3612 fps | 95.9% |
| Rottweil R 905 | <<locked>> | 84% | 44,991 psi | 71% | 3533 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 50,067 psi | 79% | 3602 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,994 psi | 78% | 3570 fps | 99% |
| Shooters World SW4350 | <<locked>> | 80% | 47,485 psi | 75% | 3553 fps | 98% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,254 psi | 76% | 3504 fps | 98.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 44,643 psi | 71% | 3527 fps | 95.5% |
| Somchem S361 | <<locked>> | 86% | 51,895 psi | 82% | 3589 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 43,903 psi | 70% | 3520 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 42,728 psi | 68% | 3435 fps | 95.9% |
| Vihtavuori N150 | <<locked>> | 80% | 52,257 psi | 83% | 3593 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,167 psi | 76% | 3573 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 86% | 42,496 psi | 67% | 3412 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 47,703 psi | 76% | 3570 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 80% | 38,421 psi | 61% | 3376 fps | 98.1% |
| Vihtavuori N560 | 68.9 gr | 88% | 50,691 psi | 80% | 3711 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 94% | 51,242 psi | 81% | 3684 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,906 psi | 76% | 3517 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,806 psi | 79% | 3655 fps | 98.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,806 psi | 49% | 3258 fps | 98% |
| Winchester Supreme 780 | <<locked>> | 86% | 45,397 psi | 72% | 3491 fps | 95.8% |
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 74 powders for .244 H&H Mag. loaded with the .243 | 65gr | Berger ND. Hodgdon Retumbo delivers the highest muzzle velocity at 3,898 fps; across all powders the maximum-charge window runs from 2,552 fps to 3,898 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 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 65.0 gr projectile in 0.243" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, 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 | 65gr | Berger ND they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, Baschieri & Pellagri 109, IMR 8133 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.