Printer Calibration Accuracy

Slicer (Sli3r, 1.3.1, X)

What is the problem? Parts are not the right size from my new Ender3 they are about 0.25mm too Large

**What did you already try to solve it?**Calibrated E-steps to X79.42, Y79.74, Z401.43 Cant seem to get them better then +0.08mm Can I get a more Accurate Result?

Logs (octoprint.log, serial.log or output on terminal tab, ... no logs, no support)

Example GCODE file

Additional information about your setup (OctoPrint version, OctoPi version, printer, firmware...)

Not sure if I understand you correctly.
Do you mean you can't get it better than 0.08 mm or 0.17 mm after E-step calibration?