Load Specifications
Load data in caliber 5.56 x 45 NATO with .224 | 77gr | Sierra HPBT MatchKing bullet and 68 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2219, Alliant Power Pro 1200-R and SNPE Vectan SP 10.
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>> | 84% | 53,563 psi | 86% | 2556 fps | 100% |
| Accurate 2015 | <<locked>> | 98% | 55,013 psi | 88% | 2648 fps | 100% |
| Accurate 2460 | <<locked>> | 94% | 53,693 psi | 86% | 2654 fps | 99.2% |
| Accurate 2495ᴾ | <<locked>> | 100% | 46,412 psi | 74% | 2582 fps | 99.9% |
| Accurate 2520 | <<locked>> | 98% | 54,679 psi | 88% | 2703 fps | 99.1% |
| Accurate 4064ᴾ | <<locked>> | 100% | 43,091 psi | 69% | 2549 fps | 98.2% |
| Accurate LT-30 | <<locked>> | 90% | 54,462 psi | 87% | 2575 fps | 99.8% |
| Accurate LT-32 | <<locked>> | 90% | 54,911 psi | 88% | 2585 fps | 99% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 53,853 psi | 86% | 2687 fps | 96.2% |
| ADI AR 2207 | <<locked>> | 88% | 54,824 psi | 88% | 2612 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 52,982 psi | 85% | 2667 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 98% | 54,128 psi | 87% | 2664 fps | 97.5% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 54,998 psi | 88% | 2720 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 94% | 54,969 psi | 88% | 2766 fps | 97.2% |
| Alliant Reloder-10x | <<locked>> | 94% | 55,129 psi | 88% | 2664 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 88% | 55,985 psi | 90% | 2618 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 56,420 psi | 90% | 2608 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 96% | 53,882 psi | 86% | 2621 fps | 98.1% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 55,230 psi | 89% | 2733 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 94% | 54,491 psi | 87% | 2690 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 94% | 56,014 psi | 90% | 2710 fps | 99.5% |
| Hodgdon H4198 | <<locked>> | 88% | 56,115 psi | 90% | 2615 fps | 99.8% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 54,186 psi | 87% | 2700 fps | 96.9% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 49,545 psi | 79% | 2671 fps | 96.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,735 psi | 52% | 1594 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 53,359 psi | 86% | 2667 fps | 96.6% |
| IMR 3031ᴾ | <<locked>> | 100% | 52,257 psi | 84% | 2717 fps | 100% |
| IMR 4198 | <<locked>> | 94% | 56,217 psi | 90% | 2638 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 55,999 psi | 90% | 2569 fps | 100% |
| IMR 8208 XBR | <<locked>> | 98% | 54,128 psi | 87% | 2664 fps | 97.5% |
| Lovex D073.4 | <<locked>> | 88% | 54,331 psi | 87% | 2674 fps | 98.8% |
| Lovex D073.5 | <<locked>> | 94% | 53,925 psi | 86% | 2657 fps | 98.3% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 51,590 psi | 83% | 2671 fps | 98.7% |
| Lovex S053 | <<locked>> | 84% | 55,027 psi | 88% | 2523 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 55,622 psi | 89% | 2638 fps | 96.5% |
| Lovex S062ᴾ | <<locked>> | 100% | 46,789 psi | 75% | 2569 fps | 96.2% |
| Norma 200 | <<locked>> | 90% | 55,767 psi | 89% | 2651 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 52,533 psi | 84% | 2644 fps | 97.3% |
| Norma 202ᴾ | <<locked>> | 100% | 53,040 psi | 85% | 2671 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 98% | 53,287 psi | 85% | 2680 fps | 96% |
| Ramshot X-Terminator | <<locked>> | 96% | 56,434 psi | 90% | 2671 fps | 96.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,054 psi | 53% | 1637 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 56,188 psi | 90% | 2605 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 54,418 psi | 87% | 2671 fps | 98.8% |
| Rottweil R 901 | <<locked>> | 98% | 54,201 psi | 87% | 2657 fps | 99.2% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 49,632 psi | 80% | 2592 fps | 96.8% |
| Shooters World AR Plus | <<locked>> | 88% | 54,331 psi | 87% | 2674 fps | 98.8% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 51,590 psi | 83% | 2671 fps | 98.7% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 46,789 psi | 75% | 2569 fps | 96.2% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 55,419 psi | 89% | 2641 fps | 97.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 55,564 psi | 89% | 2385 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 53,954 psi | 87% | 2677 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 53,534 psi | 86% | 2641 fps | 100% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 52,692 psi | 84% | 2664 fps | 95.9% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 56,275 psi | 90% | 2628 fps | 99.5% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 45,368 psi | 73% | 2480 fps | 98.9% |
| Somchem S321 | <<locked>> | 96% | 55,564 psi | 89% | 2707 fps | 98.1% |
| Somchem S335ᴾ | <<locked>> | 100% | 54,114 psi | 87% | 2615 fps | 99.7% |
| Somchem S341ᴾ | <<locked>> | 100% | 55,579 psi | 89% | 2687 fps | 96.3% |
| Vihtavuori N120 | <<locked>> | 88% | 54,810 psi | 88% | 2566 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 55,753 psi | 89% | 2618 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 55,390 psi | 89% | 2621 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 47,514 psi | 76% | 2592 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 50,024 psi | 80% | 2602 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 98% | 54,650 psi | 88% | 2664 fps | 97.7% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 48,095 psi | 77% | 2585 fps | 98.5% |
| Winchester 748ᴾ | <<locked>> | 100% | 56,275 psi | 90% | 2753 fps | 98.7% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 51,938 psi | 83% | 2667 fps | 96.4% |
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% | 47,369 psi | 76% | 2470 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 31,560 psi | 51% | 2247 fps | 97.2% |
| Accurate 2460 | <<locked>> | 82% | 36,187 psi | 58% | 2359 fps | 95.6% |
| Accurate 2495 | <<locked>> | 82% | 25,541 psi | 41% | 2156 fps | 95.1% |
| Accurate 2520 | <<locked>> | 86% | 35,955 psi | 58% | 2392 fps | 95% |
| Accurate 4064 | <<locked>> | 92% | 33,272 psi | 53% | 2356 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 40,234 psi | 65% | 2349 fps | 98.2% |
| Accurate LT-32 | <<locked>> | 80% | 40,611 psi | 65% | 2359 fps | 96.4% |
| ADI AR 2206H | <<locked>> | 98% | 51,010 psi | 82% | 2644 fps | 95.6% |
| ADI AR 2207 | <<locked>> | 80% | 43,033 psi | 69% | 2444 fps | 100% |
| ADI AR 2219 | 19 gr | 80% | 38,101 psi | 61% | 2421 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 92% | 44,788 psi | 72% | 2520 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 28,906 psi | 46% | 2257 fps | 98.7% |
| Alliant Power Pro 1200-R | 20.6 gr | 90% | 47,659 psi | 76% | 2648 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 35,940 psi | 58% | 2352 fps | 99.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 44,266 psi | 71% | 2451 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 38,711 psi | 62% | 2339 fps | 98.1% |
| Hodgdon Benchmark | <<locked>> | 88% | 42,351 psi | 68% | 2434 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 92% | 42,235 psi | 68% | 2526 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 80% | 34,461 psi | 55% | 2343 fps | 96.4% |
| Hodgdon H335 | <<locked>> | 80% | 34,925 psi | 56% | 2356 fps | 95.4% |
| Hodgdon H4198 | <<locked>> | 80% | 44,353 psi | 71% | 2438 fps | 98.5% |
| Hodgdon H4895 | <<locked>> | 96% | 47,863 psi | 77% | 2602 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 46,282 psi | 74% | 2615 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,395 psi | 39% | 1430 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 47,108 psi | 76% | 2569 fps | 95.2% |
| IMR 3031 | <<locked>> | 82% | 29,356 psi | 47% | 2270 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 37,739 psi | 61% | 2352 fps | 99.8% |
| IMR 4227 | <<locked>> | 80% | 49,966 psi | 80% | 2490 fps | 100% |
| IMR 8208 XBR | <<locked>> | 92% | 44,788 psi | 72% | 2520 fps | 95.5% |
| Lovex D073.4 | <<locked>> | 80% | 41,350 psi | 66% | 2464 fps | 96.4% |
| Lovex D073.5 | <<locked>> | 86% | 41,234 psi | 66% | 2457 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 90% | 36,956 psi | 59% | 2421 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 49,197 psi | 79% | 2448 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 49,298 psi | 79% | 2543 fps | 95.1% |
| Lovex S062 | <<locked>> | 98% | 44,237 psi | 71% | 2523 fps | 95.5% |
| Norma 200 | <<locked>> | 80% | 41,046 psi | 66% | 2431 fps | 100% |
| Norma 201 | <<locked>> | 94% | 43,816 psi | 70% | 2503 fps | 95.4% |
| Norma 202 | <<locked>> | 86% | 33,808 psi | 54% | 2329 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 96% | 49,705 psi | 80% | 2628 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 94% | 52,779 psi | 85% | 2618 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,265 psi | 39% | 1460 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 50,299 psi | 81% | 2526 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 39,610 psi | 64% | 2425 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 84% | 35,520 psi | 57% | 2333 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 96% | 43,787 psi | 70% | 2493 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 41,350 psi | 66% | 2464 fps | 96.4% |
| Shooters World Match Rifle | <<locked>> | 90% | 36,956 psi | 59% | 2421 fps | 95.3% |
| Shooters World Precision | <<locked>> | 98% | 44,237 psi | 71% | 2523 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 44,875 psi | 72% | 2480 fps | 95% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 45,165 psi | 72% | 2254 fps | 100% |
| SNPE Vectan SP 10 | 19.6 gr | 80% | 38,319 psi | 61% | 2418 fps | 96.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 36,767 psi | 59% | 2365 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 49,211 psi | 79% | 2608 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 34,156 psi | 55% | 2257 fps | 95% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 31,328 psi | 50% | 2215 fps | 95.2% |
| Somchem S321 | <<locked>> | 88% | 42,221 psi | 68% | 2493 fps | 95.2% |
| Somchem S335 | <<locked>> | 82% | 31,459 psi | 50% | 2218 fps | 95.1% |
| Somchem S341 | <<locked>> | 98% | 51,822 psi | 83% | 2631 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 43,091 psi | 69% | 2408 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 34,693 psi | 56% | 2277 fps | 98.8% |
| Vihtavuori N133 | <<locked>> | 80% | 30,197 psi | 48% | 2188 fps | 96.6% |
| Vihtavuori N135 | <<locked>> | 82% | 26,818 psi | 43% | 2175 fps | 95.4% |
| Vihtavuori N140 | <<locked>> | 88% | 34,258 psi | 55% | 2323 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 92% | 44,802 psi | 72% | 2513 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 90% | 34,983 psi | 56% | 2349 fps | 95.2% |
| Winchester 748 | <<locked>> | 90% | 40,321 psi | 65% | 2490 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 98% | 48,428 psi | 78% | 2615 fps | 95.6% |
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 68 powders for 5.56 x 45 NATO loaded with the .224 | 77gr | Sierra HPBT MatchKing. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,766 fps; across all powders the maximum-charge window runs from 1,594 fps to 2,766 fps. Accurate 2495 gives the best case fill at 100 %, and 68 of the 68 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 77.0 gr projectile in 0.224" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, ADI AR 2206H 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, Alliant Power Pro 1200-R, SNPE Vectan SP 10 rank at the top here: for 5.56 x 45 NATO with the .224 | 77gr | Sierra HPBT MatchKing 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.