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S&W Revolver rear sight MOA ?
Posted: Mon Apr 05, 2010 6:32 pm
by Rudy
Does anyone know how many MOA the adjustable S&W revolver sights are? - like the stock rear sight on a model 14 or 15.
thanks
Posted: Mon Apr 05, 2010 9:33 pm
by Rover
It depends on the barrel length.
Crank a dozen clicks on yours and see where the shots go.
Posted: Thu Apr 08, 2010 9:12 am
by Rudy
They didn't standardize them for a given barrel length?
Posted: Thu Apr 08, 2010 1:16 pm
by Rover
Nope.
The guns were not really designed for target use, though many were used for that. You get what you got. Many did not even HAVE adjustable sights.
As I've been known to say, "Test it for yourself."
Posted: Mon Apr 12, 2010 7:44 pm
by Guest
One of the benefits of training with ISSF is that a shooter can develop the skill of being able to "sight in" a handgun in maybe about 10-15 shots. If you're not that steady in the hand then rest the butt of the grip on a bench and shoot.
There has to be some side benefits with all that training.
Posted: Tue Apr 13, 2010 1:02 pm
by Gort
OK, You ready. The elevation screw has a 80 pitch thread, so each revolution of the screw moves .0125", their are six detents, so .0125/6=
.00208, that is the movement per click. Assuming a 6" bbl., the sight radius is 7.125". Cut to the chase, Each click will move point of impact .263" @ 25 yards, double that at 50 yards. (.175 @ 50 feet)
Hope this helps. Gort
Posted: Tue Apr 20, 2010 8:47 am
by Rudy
Thanks Gort!
Posted: Tue Apr 20, 2010 11:00 pm
by JamesH
Gort wrote:OK, You ready. The elevation screw has a 80 pitch thread, so each revolution of the screw moves .0125", their are six detents, so .0125/6=
.00208, that is the movement per click. Assuming a 6" bbl., the sight radius is 7.125". Cut to the chase, Each click will move point of impact .263" @ 25 yards, double that at 50 yards. (.175 @ 50 feet)
Hope this helps. Gort
Except the S+W rearsight is cantilevered and the screw is part way along the cantilever.
Furthermore, the length of the cantilever is variable since the tang is curved and contacts the top rib at a position dependent on the elevation setting.
Posted: Wed Apr 21, 2010 8:06 am
by Gort
James, The elevation screw is very close to the rear sight blade, having little effect on the numbers. The mounting screw location has even less effect on the elevation movement. The numbers in my previous post are certainty accurate enough for shooting, maybe not for a Mars landing. :)
Gort