I shot a Security Six a little loose (not bad, coulda easily been tightened back up) with really hot handloads over the years. They weren't near as strong as the GP100, but the frame design is inherently stronger than any side plate revolver for sure. Mine was exceedingly accurate with .357, but sort of mediocre with .38s that normally shot very well, target accurate in other revolvers. I did a trigger job on the thing and the trigger was AWEsome, ultra smooth DA pull. I shoulda kept it, but this guy offered me a NIB Blackhawk for it and by that time it was a little loose anyway and already out of production. I bought it in 1976 new at Gibson's discount in Lake Jackson, Texas for $180. It was a nice stainless gun and the Blackhawk is blued, but the Blackhawk is a LOT more accurate and can handle the fire breathing .357 stuff without effort. The Blackhawk is a far stronger design.
I now have a Taurus 66, not as good a trigger as the Security Six after I worked it over, but more accurate with .38 and just as accurate with .357. It's a nickeled gun, not stainless. But, on the whole, it shoots better. I probably should work the trigger on it, but I'll leave it alone, is pretty good as is. It is the most accurate DA revolver with four inch barrel I've yet owned. It puts wadcutter .38s into an inch at 25 yards. Gotta love that!
I had a M19, blued 66. Nice shootin' gun, nothing to get excited about in accuracy, but plenty adequate. I fed it mostly .38s because of the reputation. I bought it used, traded it away, and don't really miss it all that much. But, it handled recoil better than that Security Six. It sat higher in the hand and really had a lot of muzzle jump when it fired with hot loads. The M19 stayed a little closer to on target, was easier to get back on target with.
I guess my point is, between the two, six of one, half dozen of the other. I've not owned a DA .357 four inch yet (I've always had to have one in my collection just because) that I really didn't like. I have now owned S&W, Ruger, Taurus, and Rossi. That Rossi is one I really miss. It was quite light, easy to carry, a little smaller than K frame, only about 30 ounces, light on the hip and easy to carry, yet it had little muzzle flip and a nice rubber grip to absorb recoil. It had a more muzzle biased weight distribution due to it had a full lugged barrel. It was very sweet to shoot, handled a mile diet of .357s that were pretty warm and never got loose. That one I shoulda kept, but it wasn't a tack driver, though 2.5" groups at 25 yards will do just about anything that needs done. It did shoot wadcutters better'n that, too, under 2" at 25 yards.
Of all the revolvers I've owned in the past, believe it or not, that Rossi is the one I miss the most. It was just such a handy design and I sorta like the unfluted look of the cylinder. It would have made a good carry gun, but Texas had no CCW back then.
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I notice that most people I talk to seem to think that handguns are only defensive weapons or for competition. Although most of the time this is true, there are times when a man may choose a handgun over a rifle because of constraints on size or weight. Like me for instance. I would love to hual my 7mm Mag around in the plane with me but, alas, not to be. I own an STI 1911 that is undoubtable the finest combat pistol ever devised, but its not what I need as a down and dirty handgun for my survival pack.
Yeah, my biggest use for a handgun, other than CCW and range fun, is just to wear outdoors in the woods, on my place, whatever. I've potted a few rabbits, shot a few snakes, but it's there when I'm outdoors. That's what that Rossi was so good at, light on the hip, always there. Heck, even shot a Javelina with it. Had my rifle with me, but couldn't resist taking the shot with the handgun considering the range.