Good information, perhaps "ON AVERAGE" a selection of off the shelf 1911's fired with Federal Premium Gold Match ammunition from full size steel framed Ruger, Colt, springfield, Kimber, Taurus,Sig, Smith and wesson would be about as mechanically accurate as a mix of glock 21's, MP 45's, Walther PPS 45, Shield 45, HK USP 45. For instance its my perception that my shield 45 is more mechanically accurate than my Kimber 4 inch commander length 45, but this is just at 15 yards shooting off hand, I have not shot it from a rest yet.
HK USP’s are very accurate.