Load Specifications
Load data in caliber 5.56 x 45 NATO with .223 | 55gr | SUS-TAC HP bullet and 36 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2219, SNPE Vectan SP 10 and Norma 200.
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>> | 90% | 55,071 psi | 88% | 3018 fps | 99.7% |
| Accurate 2015ᴾ | <<locked>> | 100% | 47,805 psi | 77% | 2979 fps | 98.2% |
| Accurate 2460ᴾ | <<locked>> | 100% | 53,882 psi | 86% | 3084 fps | 96.5% |
| Accurate LT-30 | <<locked>> | 96% | 55,622 psi | 89% | 3022 fps | 98.2% |
| Accurate LT-32 | <<locked>> | 96% | 56,115 psi | 90% | 3028 fps | 96.5% |
| ADI APS 450 | <<locked>> | 82% | 56,434 psi | 90% | 2372 fps | 100% |
| ADI AR 2205 | <<locked>> | 82% | 53,301 psi | 85% | 2894 fps | 100% |
| ADI AR 2207 | <<locked>> | 94% | 54,621 psi | 88% | 3087 fps | 100% |
| ADI AR 2219 | <<locked>> | 96% | 53,142 psi | 85% | 3110 fps | 97.7% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 43,787 psi | 70% | 2995 fps | 99.5% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 55,114 psi | 88% | 3127 fps | 99.8% |
| Alliant Reloder-7 | <<locked>> | 92% | 53,011 psi | 85% | 3035 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 54,520 psi | 87% | 3005 fps | 98.4% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 54,592 psi | 88% | 3133 fps | 97.9% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 56,391 psi | 90% | 3150 fps | 97.3% |
| Hodgdon H4198 | <<locked>> | 92% | 53,983 psi | 87% | 3018 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,488 psi | 50% | 1900 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 56,275 psi | 90% | 3107 fps | 100% |
| IMR 4227 | <<locked>> | 88% | 54,433 psi | 87% | 3018 fps | 100% |
| Lovex D060 | <<locked>> | 82% | 53,679 psi | 86% | 3048 fps | 99.8% |
| Lovex D073.4 | <<locked>> | 94% | 54,795 psi | 88% | 3110 fps | 95.9% |
| Lovex S053 | <<locked>> | 90% | 55,477 psi | 89% | 3005 fps | 100% |
| Norma 200 | <<locked>> | 96% | 54,897 psi | 88% | 3104 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,908 psi | 50% | 1936 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 53,954 psi | 87% | 3045 fps | 100% |
| Shooters World AR Plus | <<locked>> | 94% | 54,795 psi | 88% | 3110 fps | 95.9% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 53,679 psi | 86% | 3048 fps | 99.8% |
| Shooters World SOCOM | <<locked>> | 82% | 55,347 psi | 89% | 3018 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 55,753 psi | 89% | 2848 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 54,085 psi | 87% | 3114 fps | 96.8% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 56,014 psi | 90% | 3130 fps | 98.8% |
| Vihtavuori N110 | <<locked>> | 84% | 54,824 psi | 88% | 2920 fps | 100% |
| Vihtavuori N120 | <<locked>> | 94% | 54,723 psi | 88% | 3038 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 52,475 psi | 84% | 3015 fps | 99.4% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 45,571 psi | 73% | 2900 fps | 97.7% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 37,579 psi | 60% | 2825 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>> | 80% | 39,798 psi | 64% | 2746 fps | 97.5% |
| Accurate 2015 | <<locked>> | 92% | 36,941 psi | 59% | 2759 fps | 95.5% |
| Accurate 2460 | <<locked>> | 98% | 50,372 psi | 81% | 3025 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 88% | 43,482 psi | 70% | 2812 fps | 95.8% |
| Accurate LT-32 | <<locked>> | 92% | 49,342 psi | 79% | 2917 fps | 95% |
| ADI APS 450 | <<locked>> | 80% | 54,157 psi | 87% | 2339 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 50,560 psi | 81% | 2854 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 35,273 psi | 57% | 2733 fps | 99.3% |
| ADI AR 2219 | 22.8 gr | 90% | 43,439 psi | 70% | 2930 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 88% | 30,052 psi | 48% | 2654 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 84% | 33,417 psi | 54% | 2697 fps | 95.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 36,637 psi | 59% | 2720 fps | 97.2% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 41,539 psi | 67% | 2779 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 92% | 42,264 psi | 68% | 2907 fps | 95% |
| Hodgdon H335 | <<locked>> | 94% | 46,311 psi | 74% | 2979 fps | 95% |
| Hodgdon H4198 | <<locked>> | 86% | 44,976 psi | 72% | 2861 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,902 psi | 37% | 1696 fps | 100% |
| IMR 4198 | <<locked>> | 80% | 31,386 psi | 50% | 2602 fps | 95.7% |
| IMR 4227 | <<locked>> | 80% | 42,612 psi | 68% | 2815 fps | 99.6% |
| Lovex D060 | <<locked>> | 80% | 50,995 psi | 82% | 3002 fps | 99.7% |
| Lovex D073.4 | <<locked>> | 92% | 51,024 psi | 82% | 3048 fps | 95.1% |
| Lovex S053 | <<locked>> | 80% | 41,510 psi | 67% | 2779 fps | 100% |
| Norma 200 | 19.2 gr | 80% | 33,054 psi | 53% | 2677 fps | 96.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,553 psi | 36% | 1732 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 41,989 psi | 67% | 2835 fps | 99.5% |
| Shooters World AR Plus | <<locked>> | 92% | 51,024 psi | 82% | 3048 fps | 95.1% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 50,995 psi | 82% | 3002 fps | 99.7% |
| Shooters World SOCOM | <<locked>> | 80% | 51,808 psi | 83% | 2966 fps | 99.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 38,493 psi | 62% | 2589 fps | 100% |
| SNPE Vectan SP 10 | 24.1 gr | 92% | 46,920 psi | 75% | 2989 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 41,017 psi | 66% | 2861 fps | 95.8% |
| Vihtavuori N110 | <<locked>> | 80% | 48,385 psi | 78% | 2828 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 35,433 psi | 57% | 2703 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 86% | 34,360 psi | 55% | 2664 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 94% | 37,840 psi | 61% | 2746 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 98% | 35,099 psi | 56% | 2766 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 36 powders for 5.56 x 45 NATO loaded with the .223 | 55gr | SUS-TAC HP. Hodgdon H335 delivers the highest muzzle velocity at 3,150 fps; across all powders the maximum-charge window runs from 1,900 fps to 3,150 fps. Accurate 2015 gives the best case fill at 100 %, and 36 of the 36 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 55.0 gr projectile in 0.223" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2460, Alliant AR-Comp 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 2219, SNPE Vectan SP 10, Norma 200 rank at the top here: for 5.56 x 45 NATO with the .223 | 55gr | SUS-TAC HP 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.