One thing I hear quite often, is how someone went to a gun store and handed a new Smith & Wesson revolver out of the case and was disappointed in how it felt..
The thing to remember is that the gun in the case was put in there brand new out of the box, no tear down and lube applied to it. You got to think about how long it's been in that case, how many times a day it's been handled, dry fired, cowboy'ed, etc, every day , every week , for however long it's been in there.
Most of the ones I have looked at out of the case have had one issue or another due to the factors I've mentioned above.
But, having purchased 3 686's, 2 629's, 1 617, and 1 m60 in the last 2 years, I either ordered them in, or asked for them to bring a couple brand new ones in the box out for me to look at, and I thoroughly checked them out before signing paperwork.
All have had no issues, all shoot well, and have beautiful triggers. Only one with wood grips chewed up my hand, but that's another story.
I also bought a m&p10, two glocks,a colt 6920, colt 1911 competition, marlin 1894, remlin 870, Winchester 101 and a model 70 featherweight brand new , and becouse I didn't buy out of the case and thoroughly examined each one before purchase have had not one hiccup or complaint about any of them.
Guns I got rid of in the last two years , beretta 92 , used, 80's model that put brass in my face, h&r top break , used, that had light strikes, m27 hp trigger was much heavier than my 686's and like stainless better, browning. 22 Belgium that shaved lead like crazy. All of these guns looked to be like new condition.
So my experience with new guns has been 100% satisfactory and used ones is pot luck.