Load Specifications
Load data in caliber 5.7 x 28 with .224 | 55gr | Prvi Partizan FMJ BT bullet and 67 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N105, Vihtavuori 3N38 and ADI AP 100.
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% | 43,047 psi | 86% | 1460 fps | 100% |
| Accurate No. 7² | <<locked>> | 72% | 44,991 psi | 90% | 1644 fps | 95.9% |
| Accurate No. 9* | <<locked>> | 80% | 44,222 psi | 88% | 1627 fps | 90.7% |
| Accurate Solo 1000² | <<locked>> | 76% | 42,830 psi | 86% | 1355 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 80% | 44,599 psi | 89% | 1427 fps | 100% |
| Accurate TCM* | <<locked>> | 80% | 44,005 psi | 88% | 1621 fps | 91.9% |
| ADI AP 100 | <<locked>> | 92% | 43,149 psi | 86% | 1562 fps | 99.9% |
| ADI AP 70N² | <<locked>> | 64% | 42,018 psi | 84% | 1407 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 42,177 psi | 84% | 1250 fps | 100% |
| ADI APS 450² | <<locked>> | 76% | 41,568 psi | 83% | 1273 fps | 100% |
| ADI AS 30 | <<locked>> | 80% | 44,918 psi | 90% | 1345 fps | 100% |
| ADI AS 50N² | <<locked>> | 72% | 42,946 psi | 86% | 1365 fps | 100% |
| Alliant BE-86² | <<locked>> | 76% | 42,206 psi | 84% | 1385 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 92% | 41,916 psi | 84% | 1594 fps | 94.1% |
| Alliant BULLSEYE² | <<locked>> | 68% | 42,395 psi | 85% | 1473 fps | 100% |
| Alliant Green Dot² | <<locked>> | 76% | 42,337 psi | 85% | 1362 fps | 100% |
| Alliant Herco | <<locked>> | 92% | 44,150 psi | 88% | 1493 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 76% | 43,323 psi | 87% | 1604 fps | 99.8% |
| Alliant RED DOT | <<locked>> | 80% | 44,077 psi | 88% | 1352 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 64% | 43,323 psi | 87% | 1490 fps | 100% |
| Alliant UNIQUE | <<locked>> | 80% | 45,266 psi | 90% | 1512 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 76% | 43,729 psi | 87% | 1365 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 96% | 45,049 psi | 90% | 1381 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 68% | 40,756 psi | 81% | 1345 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 76% | 44,788 psi | 90% | 1440 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 43,700 psi | 87% | 1293 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 64% | 43,729 psi | 87% | 1539 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 22,060 psi | 44% | 1033 fps | 100% |
| Hodgdon Universal² | <<locked>> | 72% | 43,859 psi | 88% | 1430 fps | 100% |
| Lovex D037.1² | <<locked>> | 72% | 44,991 psi | 90% | 1644 fps | 95.9% |
| Lovex D037.2*² | <<locked>> | 76% | 39,697 psi | 79% | 1565 fps | 88.9% |
| Lovex S011² | <<locked>> | 64% | 41,336 psi | 83% | 1368 fps | 100% |
| Lovex S020² | <<locked>> | 68% | 41,365 psi | 83% | 1421 fps | 100% |
| Maxam CSB 1 | <<locked>> | 80% | 42,003 psi | 84% | 1394 fps | 100% |
| Maxam CSB 2² | <<locked>> | 76% | 43,192 psi | 86% | 1398 fps | 100% |
| Maxam CSB 3² | <<locked>> | 76% | 42,409 psi | 85% | 1375 fps | 100% |
| Maxam CSB 4² | <<locked>> | 76% | 43,932 psi | 88% | 1371 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 43,787 psi | 88% | 1322 fps | 100% |
| Ramshot Enforcer* | <<locked>> | 88% | 40,698 psi | 81% | 1604 fps | 87.3% |
| Ramshot Silhouette² | <<locked>> | 64% | 43,294 psi | 87% | 1493 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 68% | 44,643 psi | 89% | 1394 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 21,509 psi | 43% | 1056 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 80% | 45,092 psi | 90% | 1493 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 76% | 41,394 psi | 83% | 1581 fps | 96.7% |
| Rottweil P 801² | <<locked>> | 64% | 44,788 psi | 90% | 1368 fps | 100% |
| Rottweil P 806 | <<locked>> | 80% | 43,903 psi | 88% | 1598 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 76% | 39,697 psi | 79% | 1565 fps | 88.9% |
| Shooters World Major Pistol² | <<locked>> | 72% | 44,991 psi | 90% | 1644 fps | 95.9% |
| SNPE Vectan A0 | <<locked>> | 80% | 41,742 psi | 83% | 1434 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 76% | 45,049 psi | 90% | 1414 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 76% | 44,367 psi | 89% | 1430 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 43,439 psi | 87% | 1293 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 84% | 42,134 psi | 84% | 1503 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 76% | 43,990 psi | 88% | 1427 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 72% | 45,194 psi | 90% | 1624 fps | 100% |
| Somchem MP200² | <<locked>> | 72% | 44,440 psi | 89% | 1496 fps | 100% |
| Somchem MS200² | <<locked>> | 76% | 43,192 psi | 86% | 1460 fps | 100% |
| Somchem S221² | <<locked>> | 64% | 40,393 psi | 81% | 1542 fps | 98.4% |
| Vihtavuori 3N37² | <<locked>> | 76% | 41,626 psi | 83% | 1506 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 88% | 40,625 psi | 81% | 1558 fps | 97.2% |
| Vihtavuori N105 | <<locked>> | 92% | 42,003 psi | 84% | 1614 fps | 99.5% |
| Vihtavuori N320² | <<locked>> | 72% | 44,179 psi | 88% | 1371 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 37,985 psi | 76% | 1234 fps | 100% |
| Vihtavuori N330² | <<locked>> | 68% | 39,595 psi | 79% | 1378 fps | 100% |
| Vihtavuori N340² | <<locked>> | 76% | 43,395 psi | 87% | 1460 fps | 100% |
| Vihtavuori N350 | <<locked>> | 84% | 45,223 psi | 90% | 1545 fps | 100% |
| Winchester AutoComp | <<locked>> | 80% | 43,729 psi | 87% | 1430 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 4.8"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 60% | 29,718 psi | 59% | 1283 fps | 100% |
| Accurate No. 7*² | <<locked>> | 60% | 29,747 psi | 59% | 1398 fps | 89.4% |
| Accurate No. 9*² | <<locked>> | 72% | 34,272 psi | 68% | 1476 fps | 86.1% |
| Accurate Solo 1000² | <<locked>> | 60% | 30,385 psi | 61% | 1198 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 27,267 psi | 54% | 1201 fps | 100% |
| Accurate TCM*² | <<locked>> | 72% | 34,084 psi | 68% | 1470 fps | 87.5% |
| ADI AP 100*² | 3.6 gr | 60% | 19,218 psi | 38% | 1132 fps | 91.6% |
| ADI AP 70N² | <<locked>> | 60% | 38,464 psi | 77% | 1365 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 30,980 psi | 62% | 1112 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 29,515 psi | 59% | 1119 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 30,240 psi | 60% | 1165 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 32,169 psi | 64% | 1230 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 28,485 psi | 57% | 1207 fps | 100% |
| Alliant BLUE DOT*² | <<locked>> | 76% | 27,920 psi | 56% | 1355 fps | 87.1% |
| Alliant BULLSEYE² | <<locked>> | 60% | 33,460 psi | 67% | 1358 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 30,139 psi | 60% | 1207 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 20,450 psi | 41% | 1125 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 27,340 psi | 55% | 1342 fps | 95.8% |
| Alliant RED DOT² | <<locked>> | 60% | 29,428 psi | 59% | 1168 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 37,855 psi | 76% | 1424 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 27,528 psi | 55% | 1263 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 29,588 psi | 59% | 1191 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 19,841 psi | 40% | 1040 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 32,503 psi | 65% | 1247 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 30,385 psi | 61% | 1257 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 25,425 psi | 51% | 1056 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 38,899 psi | 78% | 1480 fps | 100% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 10,689 psi | 21% | 771 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 31,894 psi | 64% | 1276 fps | 100% |
| Lovex D037.1*² | <<locked>> | 60% | 29,747 psi | 59% | 1398 fps | 89.4% |
| Lovex D037.2*² | <<locked>> | 72% | 34,272 psi | 68% | 1476 fps | 86.1% |
| Lovex S011² | <<locked>> | 60% | 37,521 psi | 75% | 1322 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 32,460 psi | 65% | 1309 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 26,165 psi | 52% | 1178 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 28,137 psi | 56% | 1201 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 28,834 psi | 58% | 1198 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 29,791 psi | 60% | 1194 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 32,576 psi | 65% | 1188 fps | 100% |
| Ramshot Enforcer* | <<locked>> | 84% | 36,506 psi | 73% | 1539 fps | 85.2% |
| Ramshot Silhouette² | <<locked>> | 60% | 38,290 psi | 77% | 1430 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 37,304 psi | 75% | 1309 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 10,776 psi | 22% | 794 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 27,064 psi | 54% | 1253 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 60% | 24,729 psi | 49% | 1286 fps | 88.7% |
| Rottweil P 801² | <<locked>> | 60% | 39,334 psi | 79% | 1309 fps | 100% |
| Rottweil P 806² | <<locked>> | 60% | 23,598 psi | 47% | 1276 fps | 98% |
| Shooters World Heavy Pistol*² | <<locked>> | 72% | 34,272 psi | 68% | 1476 fps | 86.1% |
| Shooters World Major Pistol*² | <<locked>> | 60% | 29,747 psi | 59% | 1398 fps | 89.4% |
| SNPE Vectan A0² | <<locked>> | 60% | 25,280 psi | 51% | 1198 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 30,705 psi | 61% | 1240 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 30,023 psi | 60% | 1250 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 32,764 psi | 65% | 1165 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 22,611 psi | 45% | 1191 fps | 98.3% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 29,182 psi | 58% | 1237 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 31,125 psi | 62% | 1414 fps | 98.5% |
| Somchem MP200² | <<locked>> | 60% | 31,488 psi | 63% | 1329 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 28,732 psi | 57% | 1260 fps | 100% |
| Somchem S221² | <<locked>> | 60% | 36,158 psi | 72% | 1480 fps | 97.4% |
| Vihtavuori 3N37² | <<locked>> | 60% | 25,976 psi | 52% | 1270 fps | 99.6% |
| Vihtavuori 3N38*² | 4.4 gr | 64% | 21,234 psi | 42% | 1201 fps | 87% |
| Vihtavuori N105*² | 4.3 gr | 64% | 17,999 psi | 36% | 1161 fps | 87.7% |
| Vihtavuori N320² | <<locked>> | 60% | 32,764 psi | 65% | 1237 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 18,115 psi | 36% | 938 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 32,605 psi | 65% | 1289 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 28,456 psi | 57% | 1263 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 23,105 psi | 46% | 1211 fps | 99.2% |
| Winchester AutoComp ² | <<locked>> | 60% | 26,397 psi | 53% | 1201 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
* 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 12 powders for 5.7 x 28 loaded with the .224 | 55gr | Prvi Partizan FMJ BT. Vihtavuori N105 delivers the highest muzzle velocity at 1,614 fps; across all powders the maximum-charge window runs from 1,033 fps to 1,614 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 12 of the 12 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (345 MPa), the top charges use 43–90 %, leaving at least 10 % headroom. The 55.0 gr projectile in 0.224" calls for a 1:11.5 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. Vihtavuori N105, Vihtavuori 3N38, ADI AP 100 rank at the top here: for 5.7 x 28 with the .224 | 55gr | Prvi Partizan FMJ BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant BLUE DOT burn incompletely and react more sensitively to barrel length and temperature. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N32C Tin Star 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.