Load Specifications
Load data in caliber .244 H&H Mag. with .243 | 105gr | Geco SOFTPOINT bullet and 39 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2218, Vihtavuori N570 and ReloadSwiss RS 80.
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>> | 82% | 53,722 psi | 85% | 3061 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 53,838 psi | 85% | 3163 fps | 97.9% |
| Accurate MAGPRO | <<locked>> | 82% | 56,579 psi | 90% | 3235 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 84% | 57,000 psi | 90% | 3232 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 57,014 psi | 90% | 3219 fps | 100% |
| ADI AR 2218 | <<locked>> | 94% | 53,505 psi | 85% | 3278 fps | 98.6% |
| ADI AR 2225 | <<locked>> | 94% | 56,956 psi | 90% | 3245 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 82% | 53,824 psi | 85% | 3159 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 55,999 psi | 89% | 3123 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 57,087 psi | 90% | 3209 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 55,782 psi | 88% | 3255 fps | 98.6% |
| Alliant Reloder-50 | <<locked>> | 96% | 56,231 psi | 89% | 3251 fps | 98.3% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 53,650 psi | 85% | 3123 fps | 98.4% |
| Bofors RP15 | <<locked>> | 84% | 53,606 psi | 85% | 3153 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 56,884 psi | 90% | 3232 fps | 100% |
| Bofors RP5 | <<locked>> | 82% | 53,824 psi | 85% | 3159 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 54,317 psi | 86% | 3173 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 55,477 psi | 88% | 3156 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 82% | 54,491 psi | 86% | 3136 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 88% | 56,913 psi | 90% | 3307 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,029 psi | 60% | 2080 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 55,477 psi | 88% | 3130 fps | 99.8% |
| IMR 7828 SSC | <<locked>> | 84% | 55,680 psi | 88% | 3215 fps | 99.9% |
| IMR 8133 Enduron | <<locked>> | 96% | 55,724 psi | 88% | 3225 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 55,956 psi | 89% | 3097 fps | 100% |
| Norma 217 | <<locked>> | 94% | 53,534 psi | 85% | 3186 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 53,272 psi | 84% | 3173 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 86% | 55,898 psi | 89% | 3163 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,117 psi | 62% | 2129 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 53,563 psi | 85% | 3222 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 56,942 psi | 90% | 3258 fps | 99.8% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 55,564 psi | 88% | 3173 fps | 97.9% |
| Vihtavuori N165 | <<locked>> | 84% | 54,462 psi | 86% | 3087 fps | 100% |
| Vihtavuori N170 | <<locked>> | 88% | 53,940 psi | 85% | 3117 fps | 97% |
| Vihtavuori N565 | <<locked>> | 86% | 55,042 psi | 87% | 3182 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 88% | 53,127 psi | 84% | 3189 fps | 99.1% |
| Vihtavuori N570 | <<locked>> | 90% | 54,708 psi | 87% | 3258 fps | 98.1% |
| Winchester StaBALL HD | <<locked>> | 82% | 53,476 psi | 85% | 3159 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 53,940 psi | 85% | 3094 fps | 100% |
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% | 50,212 psi | 80% | 3002 fps | 100% |
| Accurate 8700 | <<locked>> | 96% | 46,369 psi | 73% | 3022 fps | 96% |
| Accurate MAGPRO | <<locked>> | 80% | 52,678 psi | 83% | 3166 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 80% | 49,559 psi | 79% | 3094 fps | 99.5% |
| ADI AR 2217 | <<locked>> | 80% | 37,130 psi | 59% | 2818 fps | 97.2% |
| ADI AR 2218 | 69.6 gr | 88% | 42,830 psi | 68% | 3038 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 80% | 34,563 psi | 55% | 2789 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 50,314 psi | 80% | 3097 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 49,110 psi | 78% | 3012 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 43,366 psi | 69% | 2966 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 86% | 44,614 psi | 71% | 3031 fps | 95.9% |
| Alliant Reloder-50 | <<locked>> | 90% | 44,991 psi | 71% | 3025 fps | 95.4% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 46,891 psi | 74% | 2995 fps | 97% |
| Bofors RP15 | <<locked>> | 80% | 46,818 psi | 74% | 3028 fps | 99.6% |
| Bofors RP30 | <<locked>> | 80% | 40,466 psi | 64% | 2904 fps | 98.1% |
| Bofors RP5 | <<locked>> | 80% | 50,314 psi | 80% | 3097 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 80% | 40,625 psi | 64% | 2904 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 80% | 51,837 psi | 82% | 3087 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 50,908 psi | 81% | 3071 fps | 99.3% |
| Hodgdon Retumbo | <<locked>> | 80% | 42,467 psi | 67% | 3031 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,587 psi | 45% | 1864 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 52,214 psi | 83% | 3071 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 80% | 48,631 psi | 77% | 3084 fps | 99.4% |
| IMR 8133 Enduron | <<locked>> | 82% | 34,592 psi | 55% | 2766 fps | 95.9% |
| Lovex S071 | <<locked>> | 80% | 43,381 psi | 69% | 2874 fps | 100% |
| Norma 217 | <<locked>> | 80% | 32,721 psi | 52% | 2730 fps | 97.3% |
| Ramshot Grand | <<locked>> | 80% | 49,545 psi | 79% | 3107 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 80% | 44,701 psi | 71% | 2963 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,443 psi | 47% | 1909 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 42,308 psi | 67% | 3005 fps | 100% |
| ReloadSwiss RS 80 | 64.4 gr | 80% | 38,885 psi | 62% | 2884 fps | 96.1% |
| SNPE Vectan SP 13 | <<locked>> | 94% | 45,063 psi | 71% | 2969 fps | 95.2% |
| Vihtavuori N165 | <<locked>> | 80% | 47,659 psi | 76% | 2969 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 84% | 47,094 psi | 75% | 2982 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 80% | 44,802 psi | 71% | 2982 fps | 98.5% |
| Vihtavuori N568 | <<locked>> | 80% | 39,900 psi | 63% | 2904 fps | 95.9% |
| Vihtavuori N570 | 65.1 gr | 84% | 44,092 psi | 70% | 3038 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 49,429 psi | 78% | 3094 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 50,386 psi | 80% | 3031 fps | 99.9% |
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 46 powders for .244 H&H Mag. loaded with the .243 | 105gr | Geco SOFTPOINT. Hodgdon Retumbo delivers the highest muzzle velocity at 3,307 fps; across all powders the maximum-charge window runs from 2,080 fps to 3,307 fps. Accurate 8700 gives the best case fill at 100 %, and 46 of the 46 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 105.0 gr projectile in 0.243" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 8700, Hodgdon TrailBoss, ReloadSwiss RS 14 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. ADI AR 2218, Vihtavuori N570, ReloadSwiss RS 80 rank at the top here: for .244 H&H Mag. with the .243 | 105gr | Geco SOFTPOINT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Hodgdon US 869, Lovex D100, Ramshot LRT 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.