Load Specifications
Load data in caliber .244 H&H Mag. with .243 | 100gr | Norma FMJ bullet and 50 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ADI AR 2218 and Vihtavuori N570.
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% | 55,303 psi | 88% | 3150 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 51,010 psi | 81% | 3169 fps | 96.8% |
| Accurate MAGPRO | <<locked>> | 82% | 54,273 psi | 86% | 3258 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 82% | 56,072 psi | 89% | 3245 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 54,723 psi | 87% | 3255 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 92% | 54,230 psi | 86% | 3235 fps | 99.9% |
| ADI AR 2218 | <<locked>> | 96% | 55,114 psi | 87% | 3366 fps | 98.4% |
| ADI AR 2225 | <<locked>> | 94% | 53,983 psi | 86% | 3264 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 56,217 psi | 89% | 3238 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 56,217 psi | 89% | 3238 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 55,651 psi | 88% | 3228 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 55,332 psi | 88% | 3251 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 53,795 psi | 85% | 3156 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 54,636 psi | 87% | 3235 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 57,029 psi | 90% | 3340 fps | 98.5% |
| Alliant Reloder-50 | <<locked>> | 96% | 53,214 psi | 84% | 3255 fps | 97.2% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 55,143 psi | 87% | 3212 fps | 98.3% |
| Bofors RP15 | <<locked>> | 86% | 55,071 psi | 87% | 3245 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 54,476 psi | 86% | 3251 fps | 99.9% |
| Bofors RP5 | <<locked>> | 84% | 55,332 psi | 88% | 3251 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 55,811 psi | 88% | 3264 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 53,432 psi | 85% | 3179 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 84% | 56,173 psi | 89% | 3228 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 88% | 54,114 psi | 86% | 3330 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,956 psi | 60% | 2126 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 53,882 psi | 85% | 3163 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 84% | 53,403 psi | 85% | 3238 fps | 99.7% |
| IMR 8133 Enduron | <<locked>> | 98% | 56,753 psi | 90% | 3307 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 53,795 psi | 85% | 3127 fps | 100% |
| Norma 217 | <<locked>> | 96% | 54,665 psi | 87% | 3268 fps | 100% |
| Norma MRP | <<locked>> | 82% | 55,521 psi | 88% | 3268 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 54,708 psi | 87% | 3261 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 86% | 53,447 psi | 85% | 3186 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,015 psi | 62% | 2175 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 54,955 psi | 87% | 3310 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 54,012 psi | 86% | 3268 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 82% | 56,130 psi | 89% | 3205 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 82% | 55,405 psi | 88% | 3222 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 52,866 psi | 84% | 3182 fps | 96.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 55,042 psi | 87% | 3215 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 55,898 psi | 89% | 3189 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 55,840 psi | 89% | 3173 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 55,448 psi | 88% | 3202 fps | 96.8% |
| Vihtavuori N555 | <<locked>> | 82% | 55,419 psi | 88% | 3186 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 54,853 psi | 87% | 3268 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 88% | 56,420 psi | 89% | 3268 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 90% | 54,650 psi | 87% | 3281 fps | 99.1% |
| Vihtavuori N570 | <<locked>> | 92% | 55,927 psi | 89% | 3343 fps | 97.9% |
| Winchester StaBALL HD | <<locked>> | 84% | 54,694 psi | 87% | 3248 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 55,608 psi | 88% | 3182 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% | 48,211 psi | 76% | 3028 fps | 100% |
| Accurate 8700 | <<locked>> | 98% | 47,384 psi | 75% | 3097 fps | 95.7% |
| Accurate MAGPRO | <<locked>> | 80% | 50,473 psi | 80% | 3182 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 80% | 52,359 psi | 83% | 3176 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 80% | 47,732 psi | 76% | 3123 fps | 98.9% |
| ADI AR 2217 | <<locked>> | 80% | 35,621 psi | 56% | 2831 fps | 96% |
| ADI AR 2218 | 70.8 gr | 90% | 43,845 psi | 69% | 3114 fps | 95% |
| ADI AR 2225 | <<locked>> | 80% | 32,880 psi | 52% | 2795 fps | 97.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 52,576 psi | 83% | 3173 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 52,576 psi | 83% | 3173 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 80% | 52,069 psi | 83% | 3166 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 48,515 psi | 77% | 3123 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 47,050 psi | 75% | 3041 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 41,336 psi | 66% | 2986 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 88% | 45,498 psi | 72% | 3107 fps | 95.6% |
| Alliant Reloder-50 | <<locked>> | 92% | 45,788 psi | 73% | 3100 fps | 95.1% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 45,223 psi | 72% | 3015 fps | 96% |
| Bofors RP15 | <<locked>> | 80% | 45,121 psi | 72% | 3051 fps | 99.1% |
| Bofors RP30 | <<locked>> | 80% | 38,580 psi | 61% | 2913 fps | 97% |
| Bofors RP5 | <<locked>> | 80% | 48,515 psi | 77% | 3123 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 80% | 38,798 psi | 61% | 2917 fps | 97.8% |
| Hodgdon H4831 | <<locked>> | 80% | 49,908 psi | 79% | 3114 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 49,226 psi | 78% | 3100 fps | 98.7% |
| Hodgdon Retumbo | 59.4 gr | 80% | 40,350 psi | 64% | 3041 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,485 psi | 45% | 1903 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 50,459 psi | 80% | 3097 fps | 99% |
| IMR 7828 SSC | <<locked>> | 80% | 46,528 psi | 74% | 3104 fps | 98.7% |
| IMR 8133 Enduron | <<locked>> | 84% | 35,114 psi | 56% | 2838 fps | 95.5% |
| Lovex S071 | <<locked>> | 80% | 41,582 psi | 66% | 2894 fps | 99.8% |
| Norma 217 | <<locked>> | 80% | 30,850 psi | 49% | 2730 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 51,822 psi | 82% | 3202 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 47,224 psi | 75% | 3120 fps | 99.1% |
| Ramshot Magnum | <<locked>> | 80% | 42,612 psi | 68% | 2979 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,298 psi | 46% | 1949 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 40,059 psi | 63% | 3015 fps | 99.7% |
| ReloadSwiss RS 80 | <<locked>> | 82% | 39,856 psi | 63% | 2966 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 52,765 psi | 84% | 3146 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 80% | 51,982 psi | 82% | 3159 fps | 99.9% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 49,371 psi | 78% | 3110 fps | 95.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 51,634 psi | 82% | 3156 fps | 99.9% |
| Somchem S385 | <<locked>> | 80% | 52,330 psi | 83% | 3130 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 45,803 psi | 73% | 2992 fps | 99.6% |
| Vihtavuori N170 | <<locked>> | 86% | 48,341 psi | 77% | 3061 fps | 95% |
| Vihtavuori N555 | <<locked>> | 80% | 52,040 psi | 82% | 3130 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 51,227 psi | 81% | 3199 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 80% | 42,830 psi | 68% | 2999 fps | 97.6% |
| Vihtavuori N568 | <<locked>> | 82% | 40,930 psi | 65% | 2986 fps | 95.7% |
| Vihtavuori N570 | 66.3 gr | 86% | 45,034 psi | 71% | 3120 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 80% | 46,833 psi | 74% | 3117 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 48,472 psi | 77% | 3054 fps | 99.6% |
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 50 powders for .244 H&H Mag. loaded with the .243 | 100gr | Norma FMJ. ADI AR 2218 delivers the highest muzzle velocity at 3,366 fps; across all powders the maximum-charge window runs from 2,126 fps to 3,366 fps. Accurate 8700 gives the best case fill at 100 %, and 50 of the 50 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 100.0 gr projectile in 0.243" calls for a 1:10.5 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. Hodgdon Retumbo, ADI AR 2218, Vihtavuori N570 rank at the top here: for .244 H&H Mag. with the .243 | 100gr | Norma FMJ they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.