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Posted: 4/30/2011 1:53:52 PM EDT
| Recommend a Tang Sight setup for a Rossi M92 |
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I have always been a big fan of the lyman number 2 tang sight on model 94s and model 92s ( and clones).
You can use it with the aperture installed for accuracy and or for precision at longer ranges or you can use it as a ghost ring with the aperture screwed out. It's not obvious in pictures of the sight but the sight is quickly adjustable for range. The collar next to the aperture locks the sight and the large collar below raises and lowers the sight with a rack and pinion arrangement. The stem on the sight is graduated with marks and you can use paint in the notches to mark them if you prefer. When used with a globe front sight I have gotten 1.5 MOA accuracy and that was a limitation of the rifle, not the sight. Consequently it is great for short range shooting in brush or at moving targets and it is great for 200 yard shots in more open country. |
I put a Marble Arms tang sight on mine. The 20+" guns come pre drilled and tapped for a tang sight. The shorter gun would need to be drilled and tapped before you could install one. There are a few threads around here with the Brownells part numbers that you need.
I put the Marble Arms Bullseye sight on my 16" carbine 
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Quoted:
Thanks. Is there a good globe front that would match well with the tang rear? Sorry lots of questions, new to leverguns. Globe front sights with apertures are intended for shooting circular bullseyes. They'll work okay for plinking and hunting, but not as well as a blade. Just to add a globe around a blade provides some shade over the sight, but they mostly aren't needed on this type of rifle. My Stevens 44 1/2 has a Beech combination front sight and a Lyman #2 rear. The Beech has a gold bead for hunting; this provides good contrast against foliage, and a finer bead on a post inside a globe for target shooting (or hunting when the sight is visible). The elevation remains unchanged when the correct bead is installed. Lyman #2 sights work well, despite what appears to be an aperture that is too large - it's not. Adjust the windage by shimming one side of the base with narrow strips of paper. I like the Marble sight, too, since it provides windage adjustment, but in practical use in the field, you probably won't make a windage change. |
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Small point of clarification. An advantage of a globe front sight in conjuction with an aperture rear sight is indeed the ability to tailor the sight picture to the target. For example on a target rifle it is common to use circular inserts so that the rear sight forms a circle around the front sight that in turn forms a circle around the black Bullseye. Under ideal light conditions the mk 1 mod 0 human eyeball can detect differences as small as 1/5000 of an inch. So the globe front allow you to play with circles, posts and crosshairs of various sizes, thicknesses or diameters that allow you to precisely adjust the distances and contrasts between sight picture elements.
However that is not to say it is not incredibly useful on a hunting rifle. For example with most sights and insets you have a choice of several front sight post thicknesses as well as front sight apertures and cross hair reticles that can be very useful in the field. And you can invert the front post if you desire ( allows hold over without obscuring a target). And the front sight inserts can be changed with no change in zero. It's very hard to do that with a conventional bead or blade front sight. I do not recommend adjusting windage on a tang sight by shimming the rear sight base on one side or the other for a couple reasons: 1) if the shim material retains moisture, it will cause rust. 2) and the windage adjustment works at only one sight elevation. If you change the rear sight height (adjust it for a different zero range) you have also just changed the windage adjustment. It also potentially builds in a canting error, which is a very bad thing at long range. While there are some less expensive target type tang sights out there for Sharps, etc, the tilt the sight approach has some serious issues at long range, especially if you want to do something other than chase your last shot all day long. A good target sight instead keeps the sight vertical and moves it relative to the base. So in short correct the windage at the front sight when zeroing the rifle. With the 17A front sight, the height is right for the Lyman number 2 and it has a wide dove tail that offers a lot of windage adjustment. That can be important if the receiver and barrel are not perfectly aligned - an issue on some lever guns. Then when you have it zeroed, you can grind or file the extra width of the dove tail flush with the ramp on the barrel if it has a ramp for the front sight base and cold blue to match the ramp. The end result is a very clean looking installation. |
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