About 200 rounds HP without malfunction and I consider a pistol GTG with tested ammo and mags.
2nd pistol from left, a Ruger Night Watchman doesn't like Wilson 9 round mags
at all; it works fine with Ruger and Colt 8 round mags. I've ran about 200 rounds of 150 Nosler, 180 Nosler & Gold Dot through the 8 round mags no problem; I'd be willing to carry that pistol with the tested 8 round mags, have not had it very long.
The other 3 pistols have from 300-400 or so rounds through each, all HP.
My two main hand loads (new brass)
10mm Handload 180 Nosler @ 1,228 fps / 603# KE
10mm Handload Nosler 150 JHP @ 1,402 fps / 655# KE
Pistol gets bullet weight that POI best matches my POA.
The adjustable sight Ruger offers ability to make whatever bullet weight match POA.
My
"carry rotation" has a theme, 10mm 1911.
ETA:
Delta has more like 500 rounds various HP through it and it has never malfunctioned.
Stainless Ruger, somewhere between 300-400 rounds no problem.
Kimber was locking back with rounds still in mag when new, I sanded contact point on slide stop and ran 300 rounds after that to determine reliability.
All have 23# recoil spring and 25# hammer spring