Load Specifications
Load data in caliber 5.56 x 45 NATO with .224 | 35gr | Inceptor SRR bullet and 22 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Shooters World Buffalo Rifle, Lovex D060 and ReloadSwiss RS 36.
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>> | 98% | 54,592 psi | 88% | 3556 fps | 96.4% |
| Accurate 5744 | <<locked>> | 84% | 53,272 psi | 85% | 3642 fps | 96.9% |
| Accurate No. 11 FS | <<locked>> | 86% | 52,518 psi | 84% | 3570 fps | 99.3% |
| ADI APS 450 | <<locked>> | 84% | 55,869 psi | 90% | 2927 fps | 100% |
| ADI AR 2205 | <<locked>> | 90% | 53,722 psi | 86% | 3510 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 46,775 psi | 75% | 3563 fps | 98.5% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 49,908 psi | 80% | 3553 fps | 96.1% |
| Hodgdon LilGun | <<locked>> | 82% | 53,650 psi | 86% | 3642 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 27,775 psi | 45% | 2313 fps | 100% |
| IMR 4227 | <<locked>> | 98% | 56,275 psi | 90% | 3652 fps | 98.8% |
| Lovex D060 | <<locked>> | 90% | 53,983 psi | 87% | 3658 fps | 97% |
| Lovex D063 | <<locked>> | 86% | 54,288 psi | 87% | 3615 fps | 97.3% |
| Lovex S040 | <<locked>> | 84% | 54,679 psi | 88% | 3563 fps | 100% |
| Lovex S053ᴾ | <<locked>> | 100% | 56,376 psi | 90% | 3652 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 27,238 psi | 44% | 2362 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 98% | 55,129 psi | 88% | 3661 fps | 98.6% |
| Shooters World Blackout | <<locked>> | 86% | 54,288 psi | 87% | 3615 fps | 97.3% |
| Shooters World Buffalo Rifle | <<locked>> | 90% | 53,983 psi | 87% | 3658 fps | 97% |
| Shooters World SOCOM | <<locked>> | 90% | 55,521 psi | 89% | 3602 fps | 98% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 50,198 psi | 80% | 3406 fps | 100% |
| Vihtavuori N110 | <<locked>> | 94% | 54,926 psi | 88% | 3586 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 47,007 psi | 75% | 3527 fps | 99.3% |
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>> | 96% | 51,039 psi | 82% | 3497 fps | 95.6% |
| Accurate 5744 | <<locked>> | 80% | 46,862 psi | 75% | 3507 fps | 95.3% |
| Accurate No. 11 FS | <<locked>> | 80% | 42,975 psi | 69% | 3379 fps | 97.7% |
| ADI APS 450 | <<locked>> | 80% | 51,416 psi | 82% | 2851 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 39,102 psi | 63% | 3219 fps | 98.5% |
| ADI AR 2207 | <<locked>> | 92% | 35,810 psi | 57% | 3307 fps | 95.5% |
| Alliant Reloder-7 | <<locked>> | 98% | 47,239 psi | 76% | 3497 fps | 95.4% |
| Hodgdon LilGun | <<locked>> | 80% | 50,038 psi | 80% | 3583 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 19,986 psi | 32% | 2077 fps | 100% |
| IMR 4227 | <<locked>> | 88% | 40,509 psi | 65% | 3333 fps | 95.5% |
| Lovex D060 | 20.3 gr | 86% | 47,427 psi | 76% | 3520 fps | 95.5% |
| Lovex D063 | <<locked>> | 82% | 46,876 psi | 75% | 3474 fps | 95.6% |
| Lovex S040 | <<locked>> | 80% | 48,283 psi | 77% | 3455 fps | 100% |
| Lovex S053 | <<locked>> | 80% | 30,327 psi | 49% | 3071 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 19,319 psi | 31% | 2113 fps | 100% |
| ReloadSwiss RS 36 | 21.6 gr | 88% | 39,508 psi | 63% | 3337 fps | 95% |
| Shooters World Blackout | <<locked>> | 82% | 46,876 psi | 75% | 3474 fps | 95.6% |
| Shooters World Buffalo Rifle | 20.3 gr | 86% | 47,427 psi | 76% | 3520 fps | 95.5% |
| Shooters World SOCOM | <<locked>> | 84% | 44,875 psi | 72% | 3399 fps | 95.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 28,703 psi | 46% | 2953 fps | 99.9% |
| Vihtavuori N110 | <<locked>> | 80% | 35,810 psi | 57% | 3219 fps | 100% |
| Vihtavuori N120 | <<locked>> | 88% | 31,923 psi | 51% | 3159 fps | 95.4% |
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 26 powders for 5.56 x 45 NATO loaded with the .224 | 35gr | Inceptor SRR. ReloadSwiss RS 36 delivers the highest muzzle velocity at 3,661 fps; across all powders the maximum-charge window runs from 2,313 fps to 3,661 fps. ADI AR 2207 gives the best case fill at 100 %, and 26 of the 26 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 44–90 %, leaving at least 10 % headroom. The 35.0 gr projectile in 0.224" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. ADI AR 2207, Alliant Reloder-10x, Alliant Reloder-7 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. Shooters World Buffalo Rifle, Lovex D060, ReloadSwiss RS 36 rank at the top here: for 5.56 x 45 NATO with the .224 | 35gr | Inceptor SRR they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-10x, Hodgdon H4198, IMR 4198 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.