Load Specifications
Load data in caliber .223 Rem. with .224 | 45gr | Impala RNFP KO bullet and 21 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-10x, Norma 200 and IMR 4198.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 86% | 47,442 psi | 86% | 3248 fps | 98.4% |
| Accurate 2015ᴾ | <<locked>> | 100% | 46,441 psi | 84% | 3307 fps | 97.4% |
| Accurate LT-30 | <<locked>> | 92% | 47,776 psi | 87% | 3238 fps | 96% |
| ADI AR 2207 | <<locked>> | 92% | 49,284 psi | 90% | 3386 fps | 100% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 42,815 psi | 78% | 3333 fps | 98.9% |
| Alliant Reloder-10x | <<locked>> | 96% | 47,050 psi | 86% | 3363 fps | 98.5% |
| Alliant Reloder-7 | <<locked>> | 90% | 48,921 psi | 89% | 3330 fps | 99% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 49,081 psi | 89% | 3261 fps | 96.8% |
| Hodgdon H322 | <<locked>> | 98% | 49,458 psi | 90% | 3409 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,357 psi | 57% | 2159 fps | 100% |
| IMR 4198 | <<locked>> | 96% | 48,182 psi | 88% | 3346 fps | 99.2% |
| IMR 4227 | <<locked>> | 86% | 48,979 psi | 89% | 3304 fps | 99.8% |
| Lovex S053 | <<locked>> | 86% | 48,008 psi | 87% | 3264 fps | 100% |
| Norma 200 | <<locked>> | 92% | 47,645 psi | 87% | 3353 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,357 psi | 57% | 2211 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 49,052 psi | 89% | 3337 fps | 99.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 49,168 psi | 89% | 3120 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 47,253 psi | 86% | 3346 fps | 96.7% |
| Vihtavuori N120 | <<locked>> | 92% | 49,298 psi | 90% | 3333 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 47,761 psi | 87% | 3294 fps | 98.4% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 44,106 psi | 80% | 3219 fps | 96.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 39,218 psi | 71% | 3074 fps | 96.6% |
| Accurate 2015 | <<locked>> | 94% | 38,537 psi | 70% | 3136 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 90% | 45,034 psi | 82% | 3186 fps | 95.3% |
| ADI AR 2207 | <<locked>> | 80% | 34,272 psi | 62% | 3061 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 90% | 31,778 psi | 58% | 3031 fps | 95.2% |
| Alliant Reloder-10x | 20.8 gr | 86% | 34,969 psi | 64% | 3084 fps | 95.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 36,332 psi | 66% | 3054 fps | 96.3% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 43,323 psi | 79% | 3153 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 96% | 45,992 psi | 84% | 3340 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,337 psi | 42% | 1942 fps | 100% |
| IMR 4198 | 18.8 gr | 82% | 32,779 psi | 60% | 2972 fps | 95.3% |
| IMR 4227 | <<locked>> | 80% | 41,104 psi | 75% | 3143 fps | 99% |
| Lovex S053 | <<locked>> | 80% | 40,973 psi | 74% | 3127 fps | 100% |
| Norma 200 | 20 gr | 80% | 33,228 psi | 60% | 3015 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,061 psi | 42% | 1985 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 40,915 psi | 74% | 3169 fps | 98.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 38,000 psi | 69% | 2923 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 42,337 psi | 77% | 3241 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 34,345 psi | 62% | 3025 fps | 99.4% |
| Vihtavuori N130 | <<locked>> | 88% | 35,839 psi | 65% | 3031 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 96% | 39,102 psi | 71% | 3107 fps | 95.1% |
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 21 powders for .223 Rem. loaded with the .224 | 45gr | Impala RNFP KO. Hodgdon H322 delivers the highest muzzle velocity at 3,409 fps; across all powders the maximum-charge window runs from 2,159 fps to 3,409 fps. Accurate 2015 gives the best case fill at 100 %, and 21 of the 21 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (379 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 45.0 gr projectile in 0.224" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 2015, Alliant AR-Comp, Hodgdon TrailBoss 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-10x, Norma 200, IMR 4198 rank at the top here: for .223 Rem. with the .224 | 45gr | Impala RNFP KO 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.