Load Specifications
Load data in caliber .244 H&H Mag. with .243 | 105gr | Berger BT bullet and 49 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 Alliant Reloder-33.
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>> | 84% | 56,101 psi | 89% | 3100 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 52,083 psi | 83% | 3133 fps | 97.5% |
| Accurate MAGPRO | <<locked>> | 82% | 55,230 psi | 88% | 3215 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 82% | 57,072 psi | 90% | 3196 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 55,898 psi | 89% | 3215 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 92% | 55,405 psi | 88% | 3196 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 56,115 psi | 89% | 3330 fps | 99% |
| ADI AR 2225 | <<locked>> | 94% | 55,317 psi | 88% | 3222 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 56,594 psi | 90% | 3182 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 56,478 psi | 90% | 3209 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 54,824 psi | 87% | 3107 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 55,666 psi | 88% | 3189 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 54,099 psi | 86% | 3228 fps | 98.3% |
| Alliant Reloder-50 | <<locked>> | 96% | 54,578 psi | 87% | 3225 fps | 97.9% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 56,043 psi | 89% | 3169 fps | 98.8% |
| Bofors RP15 | <<locked>> | 86% | 55,956 psi | 89% | 3199 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 55,579 psi | 88% | 3212 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 56,478 psi | 90% | 3209 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 56,753 psi | 90% | 3215 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 54,433 psi | 86% | 3136 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 82% | 53,432 psi | 85% | 3120 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 88% | 55,347 psi | 88% | 3287 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,956 psi | 60% | 2073 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 54,723 psi | 87% | 3117 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 84% | 54,534 psi | 86% | 3196 fps | 99.9% |
| IMR 7977 Enduron | <<locked>> | 90% | 56,956 psi | 90% | 3123 fps | 96% |
| IMR 8133 Enduron | <<locked>> | 96% | 54,433 psi | 86% | 3205 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 54,839 psi | 87% | 3084 fps | 100% |
| Norma 217 | <<locked>> | 96% | 55,796 psi | 88% | 3228 fps | 100% |
| Norma MRP | <<locked>> | 82% | 56,768 psi | 90% | 3222 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 56,072 psi | 89% | 3222 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 54,592 psi | 87% | 3143 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,059 psi | 62% | 2123 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 56,144 psi | 89% | 3268 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 55,448 psi | 88% | 3235 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 82% | 57,014 psi | 90% | 3159 fps | 100% |
| Rottweil R 905 | <<locked>> | 82% | 56,391 psi | 89% | 3173 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 54,070 psi | 86% | 3146 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 56,028 psi | 89% | 3169 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 56,623 psi | 90% | 3136 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 56,927 psi | 90% | 3130 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 56,507 psi | 90% | 3163 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 82% | 56,463 psi | 89% | 3136 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 56,014 psi | 89% | 3228 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 86% | 53,751 psi | 85% | 3163 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 90% | 55,680 psi | 88% | 3238 fps | 99.4% |
| Vihtavuori N570 | <<locked>> | 90% | 53,432 psi | 85% | 3241 fps | 97.8% |
| Winchester StaBALL HD | <<locked>> | 84% | 55,898 psi | 89% | 3202 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 56,478 psi | 90% | 3136 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% | 49,081 psi | 78% | 2982 fps | 100% |
| Accurate 8700 | <<locked>> | 96% | 44,933 psi | 71% | 2992 fps | 95.5% |
| Accurate MAGPRO | <<locked>> | 80% | 51,590 psi | 82% | 3146 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 80% | 53,229 psi | 84% | 3130 fps | 100% |
| ADI AR 2213 | <<locked>> | 80% | 48,675 psi | 77% | 3081 fps | 99.3% |
| ADI AR 2217 | <<locked>> | 80% | 36,361 psi | 58% | 2799 fps | 96.8% |
| ADI AR 2218 | 69.8 gr | 90% | 44,933 psi | 71% | 3091 fps | 96.1% |
| ADI AR 2225 | <<locked>> | 80% | 33,620 psi | 53% | 2766 fps | 98.6% |
| Alliant Reloder-19 | <<locked>> | 80% | 52,939 psi | 84% | 3120 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 49,443 psi | 78% | 3081 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 48,153 psi | 76% | 2999 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 42,221 psi | 67% | 2946 fps | 100% |
| Alliant Reloder-33 | 67.9 gr | 86% | 43,250 psi | 69% | 3002 fps | 95.4% |
| Alliant Reloder-50 | <<locked>> | 92% | 46,905 psi | 74% | 3071 fps | 96% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 46,064 psi | 73% | 2976 fps | 96.7% |
| Bofors RP15 | <<locked>> | 80% | 45,934 psi | 73% | 3009 fps | 99.5% |
| Bofors RP30 | <<locked>> | 80% | 39,421 psi | 62% | 2884 fps | 97.8% |
| Bofors RP5 | <<locked>> | 80% | 49,443 psi | 78% | 3081 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 80% | 39,639 psi | 63% | 2884 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 80% | 50,807 psi | 81% | 3071 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 80% | 50,096 psi | 79% | 3058 fps | 99.1% |
| Hodgdon Retumbo | <<locked>> | 80% | 41,307 psi | 65% | 3009 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,543 psi | 45% | 1857 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 51,242 psi | 81% | 3051 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 80% | 47,471 psi | 75% | 3064 fps | 99.2% |
| IMR 7977 Enduron | <<locked>> | 88% | 53,505 psi | 85% | 3061 fps | 95.2% |
| IMR 8133 Enduron | <<locked>> | 82% | 33,605 psi | 53% | 2743 fps | 95.4% |
| Lovex S071 | <<locked>> | 80% | 42,482 psi | 67% | 2858 fps | 100% |
| Norma 217 | <<locked>> | 80% | 31,691 psi | 50% | 2703 fps | 96.8% |
| Norma MRP | <<locked>> | 80% | 52,953 psi | 84% | 3156 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 48,356 psi | 77% | 3084 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 80% | 43,627 psi | 69% | 2943 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,385 psi | 47% | 1903 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 41,191 psi | 65% | 2986 fps | 99.9% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 37,913 psi | 60% | 2864 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 53,548 psi | 85% | 3100 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 80% | 52,881 psi | 84% | 3114 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 96% | 47,021 psi | 75% | 3012 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 52,533 psi | 83% | 3110 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 53,229 psi | 84% | 3081 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 46,630 psi | 74% | 2949 fps | 99.8% |
| Vihtavuori N170 | <<locked>> | 86% | 49,211 psi | 78% | 3025 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 80% | 52,968 psi | 84% | 3081 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 52,272 psi | 83% | 3159 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 80% | 43,772 psi | 69% | 2963 fps | 98.3% |
| Vihtavuori N568 | <<locked>> | 80% | 38,899 psi | 62% | 2887 fps | 95.5% |
| Vihtavuori N570 | 65.3 gr | 86% | 46,079 psi | 73% | 3087 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 48,051 psi | 76% | 3074 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 49,356 psi | 78% | 3015 fps | 99.8% |
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 55 powders for .244 H&H Mag. loaded with the .243 | 105gr | Berger BT. ADI AR 2218 delivers the highest muzzle velocity at 3,330 fps; across all powders the maximum-charge window runs from 2,073 fps to 3,330 fps. Accurate 8700 gives the best case fill at 100 %, and 55 of the 55 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 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 8700, Hodgdon TrailBoss, Hodgdon US 869 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, Alliant Reloder-33 rank at the top here: for .244 H&H Mag. with the .243 | 105gr | Berger BT 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.