Load Specifications
Load data in caliber 5.7 x 28 with .224 | 55gr | Sierra SBT GameKing bullet and 67 powders. The key underlying parameters are shown in the table above.
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 ≥ 60% and propellant combustion ≥ 80%. 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: 4.8"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 72% | 43,120 psi | 86% | 1467 fps | 100% |
| Accurate No. 7*² | <<locked>> | 68% | 39,827 psi | 80% | 1578 fps | 94.5% |
| Accurate No. 9* | <<locked>> | 80% | 44,933 psi | 90% | 1647 fps | 91.2% |
| Accurate Solo 1000² | <<locked>> | 76% | 43,105 psi | 86% | 1365 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 80% | 44,672 psi | 89% | 1434 fps | 100% |
| Accurate TCM* | <<locked>> | 80% | 44,701 psi | 89% | 1640 fps | 92.5% |
| ADI AP 100 | <<locked>> | 92% | 42,786 psi | 86% | 1565 fps | 99.9% |
| ADI AP 70N² | <<locked>> | 64% | 42,221 psi | 84% | 1414 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 42,540 psi | 85% | 1260 fps | 100% |
| ADI APS 450² | <<locked>> | 76% | 41,785 psi | 84% | 1283 fps | 100% |
| ADI AS 30² | <<locked>> | 76% | 43,221 psi | 86% | 1332 fps | 100% |
| ADI AS 50N² | <<locked>> | 72% | 43,178 psi | 86% | 1375 fps | 100% |
| Alliant 2400* | <<locked>> | 88% | 42,467 psi | 85% | 1631 fps | 87.3% |
| Alliant BE-86² | <<locked>> | 76% | 43,859 psi | 88% | 1407 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 92% | 42,902 psi | 86% | 1617 fps | 94.6% |
| Alliant BULLSEYE² | <<locked>> | 68% | 42,656 psi | 85% | 1483 fps | 100% |
| Alliant Green Dot² | <<locked>> | 76% | 44,483 psi | 89% | 1394 fps | 100% |
| Alliant Herco | <<locked>> | 92% | 44,005 psi | 88% | 1499 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 76% | 43,178 psi | 86% | 1608 fps | 99.8% |
| Alliant RED DOT | <<locked>> | 80% | 44,425 psi | 89% | 1365 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 64% | 43,453 psi | 87% | 1496 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 76% | 41,771 psi | 83% | 1476 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 76% | 43,888 psi | 88% | 1371 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 92% | 43,091 psi | 86% | 1368 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 72% | 44,991 psi | 90% | 1394 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 43,859 psi | 88% | 1302 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 64% | 45,020 psi | 90% | 1562 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 22,481 psi | 45% | 1047 fps | 100% |
| Hodgdon Universal² | <<locked>> | 72% | 44,048 psi | 88% | 1437 fps | 100% |
| Lovex D037.1*² | <<locked>> | 68% | 39,827 psi | 80% | 1578 fps | 94.5% |
| Lovex D037.2*² | <<locked>> | 76% | 40,393 psi | 81% | 1581 fps | 89.5% |
| Lovex S011² | <<locked>> | 64% | 41,553 psi | 83% | 1375 fps | 100% |
| Lovex S020² | <<locked>> | 68% | 41,582 psi | 83% | 1430 fps | 100% |
| Maxam CSB 1 | <<locked>> | 80% | 42,119 psi | 84% | 1401 fps | 100% |
| Maxam CSB 2² | <<locked>> | 76% | 43,424 psi | 87% | 1404 fps | 100% |
| Maxam CSB 3² | <<locked>> | 76% | 42,641 psi | 85% | 1385 fps | 100% |
| Maxam CSB 4² | <<locked>> | 76% | 44,193 psi | 88% | 1381 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 44,164 psi | 88% | 1332 fps | 100% |
| Ramshot Enforcer* | <<locked>> | 88% | 42,888 psi | 86% | 1640 fps | 88.5% |
| Ramshot Silhouette² | <<locked>> | 64% | 43,192 psi | 86% | 1496 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 68% | 44,904 psi | 90% | 1404 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 20,842 psi | 42% | 1047 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 76% | 41,481 psi | 83% | 1460 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 76% | 40,988 psi | 82% | 1581 fps | 96.8% |
| Rottweil P 801² | <<locked>> | 64% | 44,991 psi | 90% | 1375 fps | 100% |
| Rottweil P 806 | <<locked>> | 80% | 44,904 psi | 90% | 1614 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 76% | 40,393 psi | 81% | 1581 fps | 89.5% |
| Shooters World Major Pistol*² | <<locked>> | 68% | 39,827 psi | 80% | 1578 fps | 94.5% |
| SNPE Vectan A0 | <<locked>> | 80% | 41,742 psi | 83% | 1440 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 72% | 41,568 psi | 83% | 1385 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 72% | 40,886 psi | 82% | 1398 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 43,598 psi | 87% | 1302 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 84% | 43,511 psi | 87% | 1526 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 72% | 40,524 psi | 81% | 1394 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 68% | 41,597 psi | 83% | 1581 fps | 100% |
| Somchem MP200² | <<locked>> | 72% | 44,396 psi | 89% | 1503 fps | 100% |
| Somchem MS200² | <<locked>> | 76% | 43,294 psi | 87% | 1467 fps | 100% |
| Somchem S221² | <<locked>> | 64% | 41,582 psi | 83% | 1562 fps | 98.8% |
| Vihtavuori 3N37² | <<locked>> | 76% | 43,105 psi | 86% | 1532 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 88% | 41,829 psi | 84% | 1581 fps | 97.6% |
| Vihtavuori N105 | <<locked>> | 92% | 43,395 psi | 87% | 1634 fps | 99.7% |
| Vihtavuori N320² | <<locked>> | 72% | 44,483 psi | 89% | 1381 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 38,145 psi | 76% | 1240 fps | 100% |
| Vihtavuori N330² | <<locked>> | 68% | 41,756 psi | 83% | 1407 fps | 100% |
| Vihtavuori N340² | <<locked>> | 76% | 43,410 psi | 87% | 1463 fps | 100% |
| Vihtavuori N350 | <<locked>> | 84% | 45,063 psi | 90% | 1549 fps | 100% |
| Winchester AutoComp | <<locked>> | 80% | 45,136 psi | 90% | 1453 fps | 100% |
Start Load - Barrel Length: 4.8"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 60% | 30,153 psi | 60% | 1296 fps | 100% |
| Accurate No. 7*² | <<locked>> | 60% | 29,704 psi | 59% | 1404 fps | 89.6% |
| Accurate No. 9*² | <<locked>> | 72% | 35,172 psi | 70% | 1496 fps | 86.9% |
| Accurate Solo 1000² | <<locked>> | 60% | 29,341 psi | 59% | 1188 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 27,775 psi | 56% | 1217 fps | 100% |
| Accurate TCM*² | <<locked>> | 68% | 30,327 psi | 61% | 1407 fps | 85.6% |
| ADI AP 100*² | <<locked>> | 60% | 19,508 psi | 39% | 1145 fps | 92% |
| ADI AP 70N² | <<locked>> | 60% | 38,740 psi | 77% | 1375 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 29,921 psi | 60% | 1102 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 30,023 psi | 60% | 1132 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 29,225 psi | 58% | 1155 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 32,663 psi | 65% | 1243 fps | 100% |
| Alliant 2400* | <<locked>> | 84% | 38,203 psi | 76% | 1565 fps | 85.2% |
| Alliant BE-86² | <<locked>> | 60% | 28,761 psi | 57% | 1217 fps | 100% |
| Alliant BLUE DOT*² | <<locked>> | 72% | 25,860 psi | 52% | 1316 fps | 85.9% |
| Alliant BULLSEYE² | <<locked>> | 60% | 33,910 psi | 68% | 1368 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 30,690 psi | 61% | 1217 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 20,798 psi | 42% | 1135 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 27,586 psi | 55% | 1348 fps | 96% |
| Alliant RED DOT² | <<locked>> | 60% | 28,442 psi | 57% | 1155 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 38,145 psi | 76% | 1430 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 27,949 psi | 56% | 1276 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 30,066 psi | 60% | 1204 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 20,189 psi | 40% | 1047 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 32,489 psi | 65% | 1250 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 24,569 psi | 49% | 1050 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 40,234 psi | 80% | 1503 fps | 100% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 11,182 psi | 22% | 791 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 32,285 psi | 65% | 1289 fps | 100% |
| Lovex D037.1*² | <<locked>> | 60% | 29,704 psi | 59% | 1404 fps | 89.6% |
| Lovex D037.2*² | <<locked>> | 72% | 35,172 psi | 70% | 1496 fps | 86.9% |
| Lovex S011² | <<locked>> | 60% | 37,840 psi | 76% | 1332 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 32,822 psi | 66% | 1319 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 25,280 psi | 51% | 1168 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 28,689 psi | 57% | 1214 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 29,312 psi | 59% | 1211 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 30,327 psi | 61% | 1204 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 33,127 psi | 66% | 1198 fps | 100% |
| Ramshot Enforcer* | <<locked>> | 84% | 37,217 psi | 74% | 1555 fps | 85.8% |
| Ramshot Silhouette² | <<locked>> | 60% | 38,334 psi | 77% | 1437 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 37,695 psi | 75% | 1319 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 10,544 psi | 21% | 791 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 27,470 psi | 55% | 1266 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 60% | 25,860 psi | 52% | 1316 fps | 89.8% |
| Rottweil P 801² | <<locked>> | 60% | 39,639 psi | 79% | 1316 fps | 100% |
| Rottweil P 806² | <<locked>> | 60% | 23,714 psi | 47% | 1280 fps | 98.1% |
| Shooters World Heavy Pistol*² | <<locked>> | 72% | 35,172 psi | 70% | 1496 fps | 86.9% |
| Shooters World Major Pistol*² | <<locked>> | 60% | 29,704 psi | 59% | 1404 fps | 89.6% |
| SNPE Vectan A0² | <<locked>> | 60% | 25,657 psi | 51% | 1207 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 30,995 psi | 62% | 1247 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 30,269 psi | 60% | 1260 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 33,185 psi | 66% | 1178 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 22,829 psi | 46% | 1198 fps | 98.4% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 29,559 psi | 59% | 1247 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 32,677 psi | 65% | 1444 fps | 99% |
| Somchem MP200² | <<locked>> | 60% | 31,720 psi | 63% | 1335 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 29,124 psi | 58% | 1273 fps | 100% |
| Somchem S221² | <<locked>> | 60% | 35,998 psi | 72% | 1483 fps | 97.5% |
| Vihtavuori 3N37² | <<locked>> | 60% | 27,354 psi | 55% | 1299 fps | 99.9% |
| Vihtavuori 3N38*² | <<locked>> | 64% | 21,393 psi | 43% | 1211 fps | 87.3% |
| Vihtavuori N105*² | <<locked>> | 60% | 16,592 psi | 33% | 1125 fps | 86.1% |
| Vihtavuori N320² | <<locked>> | 60% | 33,301 psi | 67% | 1250 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 17,564 psi | 35% | 932 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 33,011 psi | 66% | 1299 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 28,776 psi | 58% | 1273 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 23,366 psi | 47% | 1220 fps | 99.3% |
| Winchester AutoComp ² | <<locked>> | 60% | 26,716 psi | 53% | 1211 fps | 100% |
* not dangerous but load has suboptimal powder burnt with possible characteristics such as extensive muzzle flash or inaccurate loads.
² fill rate low - you might want to consider using a filler to ensure proper ignition.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 67 powders for 5.7 x 28 loaded with the .224 | 55gr | Sierra SBT GameKing. Accurate No. 9 delivers the highest muzzle velocity at 1,647 fps; across all powders the maximum-charge window runs from 1,047 fps to 1,647 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 22 of the 67 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (345 MPa), the top charges use 42–90 %, leaving at least 10 % headroom. The 55.0 gr projectile in 0.224" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N32C Tin Star 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. As outliers, Accurate No. 7, Accurate No. 9, Accurate TCM burn incompletely and react more sensitively to barrel length and temperature. ADI APS 350, Baschieri & Pellagri 102 Pistol, Hodgdon Clays stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.