The 1911 design is over 90 years old. The HK, Sigarms, Glocks are modern designs. The 1911 will feed modern JHP's if it is modified, but I don't think any 1911 can be as reliable as an HK, Sigarms or Glock because there is much more metal-to-metal friction & more parts. I had a Kimber Gold Match ($1,200.00) that was good, but it never was as reliable as my Glock Mod. 21 ($500.00)