Load Specifications
Load data in caliber 5.56 x 45 NATO with .224 | 44gr | Peregrine VLR-4 bullet and 24 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 36, Alliant Reloder-7 and ADI AR 2207.
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: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 94% | 53,563 psi | 86% | 3268 fps | 98.1% |
| Accurate 5744 | <<locked>> | 82% | 55,796 psi | 89% | 3383 fps | 99% |
| Accurate No. 11 FS | <<locked>> | 84% | 55,245 psi | 89% | 3307 fps | 100% |
| ADI APS 450 | <<locked>> | 82% | 54,795 psi | 88% | 2608 fps | 100% |
| ADI AR 2205 | <<locked>> | 88% | 56,173 psi | 90% | 3238 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 54,244 psi | 87% | 3392 fps | 100% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 44,527 psi | 71% | 3225 fps | 96.5% |
| Alliant Reloder-7 | <<locked>> | 98% | 53,490 psi | 86% | 3330 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,385 psi | 47% | 2090 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 47,790 psi | 77% | 3248 fps | 98% |
| IMR 4227 | <<locked>> | 94% | 55,883 psi | 90% | 3340 fps | 99.8% |
| Lovex D060 | <<locked>> | 88% | 55,796 psi | 89% | 3383 fps | 99% |
| Lovex D063 | <<locked>> | 82% | 52,431 psi | 84% | 3291 fps | 98.7% |
| Lovex S053 | <<locked>> | 96% | 56,405 psi | 90% | 3333 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 51,198 psi | 82% | 3337 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,529 psi | 46% | 2126 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 94% | 54,969 psi | 88% | 3360 fps | 99.7% |
| Shooters World Blackout | <<locked>> | 82% | 52,431 psi | 84% | 3291 fps | 98.7% |
| Shooters World Buffalo Rifle | <<locked>> | 88% | 55,796 psi | 89% | 3383 fps | 99% |
| Shooters World SOCOM | <<locked>> | 86% | 54,520 psi | 87% | 3294 fps | 99.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 98% | 53,650 psi | 86% | 3133 fps | 100% |
| Vihtavuori N110 | <<locked>> | 90% | 55,680 psi | 89% | 3261 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 54,331 psi | 87% | 3343 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 43,598 psi | 70% | 3127 fps | 95.9% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 86% | 40,915 psi | 66% | 3028 fps | 95.3% |
| Accurate 5744 | <<locked>> | 80% | 52,257 psi | 84% | 3320 fps | 98.5% |
| Accurate No. 11 FS | <<locked>> | 80% | 48,298 psi | 77% | 3192 fps | 99.8% |
| ADI APS 450 | <<locked>> | 80% | 53,272 psi | 85% | 2585 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 43,584 psi | 70% | 3028 fps | 100% |
| ADI AR 2207 | 18.9 gr | 82% | 30,269 psi | 49% | 2877 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 98% | 41,524 psi | 67% | 3159 fps | 95.6% |
| Alliant Reloder-7 | 20.9 gr | 88% | 38,653 psi | 62% | 3035 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,103 psi | 34% | 1867 fps | 100% |
| IMR 4198 | <<locked>> | 92% | 37,521 psi | 60% | 3018 fps | 95.2% |
| IMR 4227 | <<locked>> | 80% | 35,737 psi | 57% | 2936 fps | 96.3% |
| Lovex D060 | <<locked>> | 80% | 43,947 psi | 70% | 3153 fps | 96.9% |
| Lovex D063 | <<locked>> | 80% | 49,008 psi | 79% | 3228 fps | 98.2% |
| Lovex S053 | <<locked>> | 80% | 34,534 psi | 55% | 2910 fps | 98.9% |
| Norma 200 | <<locked>> | 92% | 38,740 psi | 62% | 3087 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,002 psi | 34% | 1916 fps | 100% |
| ReloadSwiss RS 36 | 19.1 gr | 80% | 34,650 psi | 56% | 2940 fps | 95.8% |
| Shooters World Blackout | <<locked>> | 80% | 49,008 psi | 79% | 3228 fps | 98.2% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 43,947 psi | 70% | 3153 fps | 96.9% |
| Shooters World SOCOM | <<locked>> | 80% | 43,918 psi | 70% | 3100 fps | 97.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 32,808 psi | 53% | 2766 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 41,176 psi | 66% | 3022 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 28,471 psi | 46% | 2792 fps | 96.4% |
| Vihtavuori N130 | <<locked>> | 98% | 40,669 psi | 65% | 3064 fps | 95% |
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 24 powders for 5.56 x 45 NATO loaded with the .224 | 44gr | Peregrine VLR-4. ADI AR 2207 delivers the highest muzzle velocity at 3,392 fps; across all powders the maximum-charge window runs from 2,090 fps to 3,392 fps. ADI AR 2207 gives the best case fill at 100 %, and 24 of the 24 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 46–90 %, leaving at least 10 % headroom. The 44.0 gr projectile in 0.224" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. ADI AR 2207, Alliant Reloder-10x, 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. ReloadSwiss RS 36, Alliant Reloder-7, ADI AR 2207 rank at the top here: for 5.56 x 45 NATO with the .224 | 44gr | Peregrine VLR-4 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.