Total weight is not the entire equation. Weight distribution is important, as too much weight concentrated in the grip, or at the rear of the pistol, can produce a outward-leaning tendency, and/or a pendulum effect, especially when using a “high-ride” type of holster.
I have no problem carrying a 4” full-lug GP100, or a 5” all-steel 1911, each of which weighs more than 40 ounces, IIRC, before one adds the weight of ammo and, in the case of the 1911, the magazine. This assumes a decently stiff belt, and a holster that is stable, on the belt. I do not always pack this heavy, but, I appreciate the handling qualities of full-sized weapons, and, recoil has become the nemesis of my aging hands, so, medium-frame revolvers, and full-sized 1911 pistols, are much more tolerable to shoot than most compact handguns. So, it is just as well that I do not mind toting the weight of a duty/service type of weapon.
I will, of course, eventually feel the weight of a 4” full-lug GP100 sooner than the weight of a 3” GP100, or a 2-3/4” or 4” Speed Six. A 4” GP100 represents a “would willingly carry” maximum, rather than an everyday-carry revolver.
My long-stroke DA trigger skill is less-perishable than my 19-Eleven-ing skill, and FAR less-perishable than my Glocking skill. Two members of our household are in highly-vulnerable categories, in this pandemic, so, my shooting has been curtailed, to reduce the likelihood of bringing home something tragically unwelcome. The result of all of this is that I find medium-frame revolvers comfortable, and comforting. When I can again train as much as I would like, the 1911, and probably the Glock G19x/G45 and G17, will re-join the line-up.
I like holsters with one tunnel loop, and one outboard loop. The earliest example, of which I am aware, is the Bruce Nelson Professional. Milt Sparks lists the BN-55, and it is no coincidence that “BN” are the late Bruce Nelson’s initials. Josh Bulman’s Forward Drop Scabbard is my favorite interpretation of this general type of scabbard/holster, for the 1911. Milt Sparks’ PMK is another rig of this general type, which I love for concealing revolvers.
A 4” or 5” barrel helps stabilize a weapon, while it is being carried, but, a shorter barrel clears leather quicker, especially if carrying inside the trousers, so, I like 2” to 3” revolvers, too.