I'm one of those people who has long espoused the idea that the Ruger GP-100 is a stronger gun than the S&W 686, and I will continue to espouse it, BUT...what I'm talking about has nothing to do with wearing them out from shooting zippy loads. When it comes to the durability of each gun from just shooting them, I cannot claim that the Ruger will hold up any longer than the 686, because as already mentioned there are few records of any GP or 686 revolvers being shot enough to be worn out. What I'm talking about when I say the Ruger is a stronger gun is that when it is closed, its cylinder is locked into the gun with a far stronger system than the Smith. The Ruger locks into the frame via the cylinder's center pin (at the rear) and a beefy, angled tab at the front of the yoke that locks into the front of the frame beneath the barrel. This system is vastly mechanically stronger than that of the Smith, which locks its cylinder in using only the cylinder's center pin at the rear (like the Ruger) and the front locking bolt engaging with the front of the ejector rod under the barrel. If a person were in the habit of subjecting their revolver to lots of lateral stress on the cylinder, I have no doubt the Ruger would hold up to such abuse better than the Smith. However, it's important to ask the question; who the hell is going to be throwing their revolver down the stairs with regularity?! Or, to put it another way; does it really matter? In most cases, probably not. We've certainly had lots of time to find out if the S&W system was going to be an issue for cops, soldiers, airmen, and a slew of civilians since 1905, and it hasn't been yet. Likely because most folks aren't in the habit of casually tossing their service revolvers down the stairs on a daily basis. I don't personally think that the S&W system is necessarily weak, but anyone can see that it is certainly weaker than the Ruger. Anyway, this rambling diatribe was only intended to point out that some of us say the Ruger is "stronger" because it is, but in a way that most people probably won't ever need.