Load Specifications
Load data in caliber .244 H&H Mag. with .243 | 60gr | Sierra VarmintKing bullet and 64 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Winchester StaBALL HD and Bofors RP15.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 55,767 psi | 88% | 3796 fps | 99.4% |
| Accurate 4350 | <<locked>> | 86% | 56,246 psi | 89% | 3865 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 82% | 56,623 psi | 90% | 3839 fps | 100% |
| ADI AR 2209 | <<locked>> | 90% | 53,795 psi | 85% | 3835 fps | 97.1% |
| ADI AR 2213 | <<locked>> | 94% | 55,666 psi | 88% | 3901 fps | 96.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,976 psi | 71% | 3675 fps | 97.2% |
| Alliant Reloder-16 | <<locked>> | 88% | 57,000 psi | 90% | 3937 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,375 psi | 86% | 3878 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,000 psi | 90% | 3891 fps | 97.9% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,724 psi | 88% | 3898 fps | 97.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,956 psi | 90% | 3885 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,739 psi | 90% | 3937 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 53,737 psi | 85% | 3894 fps | 99.9% |
| Bofors RP15 | <<locked>> | 96% | 54,694 psi | 87% | 3871 fps | 97.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,721 psi | 84% | 3832 fps | 96.4% |
| Bofors RP5 | <<locked>> | 94% | 55,724 psi | 88% | 3898 fps | 97.8% |
| Bofors RP7 | <<locked>> | 84% | 54,868 psi | 87% | 3799 fps | 98.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,738 psi | 88% | 3875 fps | 97.6% |
| Hodgdon H414 | <<locked>> | 84% | 54,288 psi | 86% | 3845 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 84% | 56,695 psi | 90% | 3871 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 53,780 psi | 85% | 3776 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,506 psi | 88% | 4006 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 84% | 55,332 psi | 88% | 3875 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,724 psi | 58% | 2635 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,797 psi | 90% | 3839 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,318 psi | 89% | 3835 fps | 98.8% |
| IMR 4831 | <<locked>> | 88% | 56,724 psi | 90% | 3852 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,391 psi | 89% | 3816 fps | 96.1% |
| Lovex S065 | <<locked>> | 86% | 56,927 psi | 90% | 3829 fps | 99.6% |
| Lovex S070 | <<locked>> | 86% | 55,158 psi | 87% | 3809 fps | 98.8% |
| Lovex S071 | <<locked>> | 98% | 53,200 psi | 84% | 3747 fps | 99.1% |
| Norma 204 | <<locked>> | 86% | 54,099 psi | 86% | 3819 fps | 97.1% |
| Norma MRP | <<locked>> | 92% | 55,666 psi | 88% | 3921 fps | 98.8% |
| Norma URP | <<locked>> | 86% | 54,549 psi | 86% | 3839 fps | 99.8% |
| Ramshot Grand | <<locked>> | 94% | 54,230 psi | 86% | 3878 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 86% | 53,722 psi | 85% | 3822 fps | 99.1% |
| Ramshot Magnum | <<locked>> | 96% | 53,098 psi | 84% | 3796 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,492 psi | 59% | 2694 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,666 psi | 90% | 3878 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,027 psi | 87% | 3907 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 53,098 psi | 84% | 3911 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 82% | 56,057 psi | 89% | 3822 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 54,897 psi | 87% | 3802 fps | 96.3% |
| Rottweil R 905 | <<locked>> | 92% | 56,507 psi | 90% | 3881 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 84% | 54,868 psi | 87% | 3799 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,927 psi | 90% | 3829 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 86% | 55,158 psi | 87% | 3809 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,637 psi | 88% | 3681 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,550 psi | 90% | 3766 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,057 psi | 89% | 3875 fps | 97.8% |
| Somchem S355 | <<locked>> | 82% | 55,593 psi | 88% | 3816 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,971 psi | 90% | 3780 fps | 96.2% |
| Somchem S365 | <<locked>> | 88% | 55,288 psi | 88% | 3845 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 53,577 psi | 85% | 3773 fps | 98.1% |
| Vihtavuori N150 | <<locked>> | 84% | 56,956 psi | 90% | 3776 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,347 psi | 89% | 3832 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 96% | 56,971 psi | 90% | 3816 fps | 98.4% |
| Vihtavuori N550 | <<locked>> | 86% | 55,796 psi | 88% | 3829 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 92% | 55,129 psi | 87% | 3852 fps | 100% |
| Vihtavuori N565 | <<locked>> | 98% | 55,840 psi | 89% | 3871 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,594 psi | 90% | 3773 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,288 psi | 86% | 3845 fps | 98.6% |
| Winchester StaBALL HD | <<locked>> | 96% | 55,419 psi | 88% | 3967 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 53,548 psi | 85% | 3760 fps | 97.2% |
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>> | 84% | 39,030 psi | 62% | 3412 fps | 95.6% |
| Accurate 4350 | <<locked>> | 80% | 45,310 psi | 72% | 3632 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 80% | 53,214 psi | 84% | 3773 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 86% | 46,702 psi | 74% | 3678 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 92% | 51,822 psi | 82% | 3816 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 98% | 41,945 psi | 66% | 3589 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,236 psi | 69% | 3642 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,633 psi | 80% | 3809 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 46,528 psi | 74% | 3661 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 90% | 48,472 psi | 77% | 3734 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,271 psi | 51% | 3294 fps | 96.5% |
| Alliant Reloder-25 | <<locked>> | 88% | 37,304 psi | 59% | 3465 fps | 95.7% |
| Alliant Reloder-26 | 64.5 gr | 80% | 35,810 psi | 57% | 3448 fps | 95.6% |
| Bofors RP15 | 68.3 gr | 92% | 47,790 psi | 76% | 3714 fps | 95.6% |
| Bofors RP30 | <<locked>> | 98% | 49,066 psi | 78% | 3753 fps | 95.3% |
| Bofors RP5 | <<locked>> | 90% | 48,472 psi | 77% | 3734 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 47,950 psi | 76% | 3648 fps | 96.7% |
| Hodgdon H1000 | <<locked>> | 96% | 48,008 psi | 76% | 3701 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 47,137 psi | 75% | 3688 fps | 97% |
| Hodgdon H4350 | <<locked>> | 80% | 49,559 psi | 79% | 3720 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,785 psi | 65% | 3494 fps | 99.1% |
| Hodgdon Retumbo | <<locked>> | 94% | 44,860 psi | 71% | 3734 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 47,137 psi | 75% | 3698 fps | 96.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,340 psi | 43% | 2375 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,497 psi | 69% | 3540 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,371 psi | 78% | 3688 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 43,047 psi | 68% | 3556 fps | 98.4% |
| IMR 4955 Enduron | <<locked>> | 90% | 52,823 psi | 84% | 3743 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 46,891 psi | 74% | 3619 fps | 98.1% |
| Lovex S070 | <<locked>> | 80% | 45,339 psi | 72% | 3596 fps | 96.8% |
| Lovex S071 | <<locked>> | 88% | 37,913 psi | 60% | 3383 fps | 95.1% |
| Norma 204 | <<locked>> | 82% | 46,905 psi | 74% | 3655 fps | 95.1% |
| Norma MRP | <<locked>> | 84% | 41,292 psi | 65% | 3583 fps | 95% |
| Norma URP | <<locked>> | 80% | 44,483 psi | 71% | 3619 fps | 98.5% |
| Ramshot Grand | <<locked>> | 92% | 50,096 psi | 79% | 3793 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 43,584 psi | 69% | 3593 fps | 96.9% |
| Ramshot Magnum | <<locked>> | 92% | 45,411 psi | 72% | 3625 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,905 psi | 44% | 2431 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,571 psi | 72% | 3645 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,801 psi | 69% | 3655 fps | 98.2% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 42,148 psi | 67% | 3629 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 52,359 psi | 83% | 3750 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 51,329 psi | 81% | 3727 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 86% | 45,745 psi | 73% | 3638 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 47,950 psi | 76% | 3648 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,891 psi | 74% | 3619 fps | 98.1% |
| Shooters World SW4350 | <<locked>> | 80% | 45,339 psi | 72% | 3596 fps | 96.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,199 psi | 83% | 3625 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,166 psi | 73% | 3547 fps | 97% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 48,718 psi | 77% | 3714 fps | 96% |
| Somchem S355 | <<locked>> | 80% | 51,996 psi | 82% | 3743 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 53,156 psi | 84% | 3701 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 41,379 psi | 66% | 3556 fps | 99.8% |
| Somchem S385 | <<locked>> | 84% | 43,439 psi | 69% | 3543 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 49,980 psi | 79% | 3648 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,832 psi | 73% | 3615 fps | 98.8% |
| Vihtavuori N165 | <<locked>> | 90% | 46,311 psi | 73% | 3589 fps | 96% |
| Vihtavuori N550 | <<locked>> | 80% | 45,426 psi | 72% | 3609 fps | 98.6% |
| Vihtavuori N555 | <<locked>> | 80% | 36,158 psi | 57% | 3402 fps | 96.7% |
| Vihtavuori N565 | <<locked>> | 96% | 52,025 psi | 82% | 3786 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,556 psi | 72% | 3563 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 47,355 psi | 75% | 3691 fps | 97.1% |
| Winchester StaBALL HD | 62 gr | 80% | 28,950 psi | 46% | 3258 fps | 95.7% |
| Winchester Supreme 780 | <<locked>> | 88% | 46,238 psi | 73% | 3596 fps | 95.2% |
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 | 60gr | Sierra VarmintKing. Hodgdon Retumbo delivers the highest muzzle velocity at 4,006 fps; across all powders the maximum-charge window runs from 2,635 fps to 4,006 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 58–90 %, leaving at least 10 % headroom. The 60.0 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-25 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. Alliant Reloder-26, Winchester StaBALL HD, Bofors RP15 rank at the top here: for .244 H&H Mag. with the .243 | 60gr | Sierra VarmintKing they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Baschieri & Pellagri 109, Norma 217, ReloadSwiss RS 80 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.