I've got a problem. When I look through the rear sight on my M-1 Garand, it looks like there is a piece of dust in it. Makes it hard to see the front sight.
If I use a bigger apeture, will it affect the my accuracy?
Same thing happens on my LTR with Tech sights. My Enfield No4 Mk II with is almost ghost ring sight is not a problem.
I have no advice to give, but I do sympathize. I have the same problem with my tech sights. Particularly while in the sitting position. While sitting, I can't line up my glasses with the sights, and I end up looking through the sites with just my eyes while looking over the top of my glasses. I can't hardly see the front sight like that, much less the target.
This topic discusses the dark-spot piece-of dust condition: www.http://appleseedinfo.org/smf/index.php?topic=4317.0
I've got an adjustable rear iris aperture for my National Match rear sights and can create the problem you describe by making the iris smaller. Guitarzan; I don't know if larger Garand apertures are available. I never noticed the problem when shooting an M1 or M14 because I'm a 'stock crawler' and my eye is close to the receiver.
Cheeks: If you're looking at the sights over the top of your glasses I suspect you need to change your position and raise your rifle up a bit. I have to shoot sitting cross-ankle or spread-leg to get my rifle up to my face. Find your position "by the numbers": index your body to the target; with your head up looking at the target, raise the rifle to your face; then adjust your legs so your arms are positioned to support the rifle; then adjust the sling to provide support. Most Tech Sights I've seen have a pretty generous aperture. If it seems small, your head may be too far back. Could the stock be too long for you?
This is most likely an eye relief issue. For ideal sight alignment, you must have a good cheek weld and close eye relief. If you are close enough, even with a very small aperture, the circle will seem large. Having a stock which has a large length of pull for you can make this difficult.
I wear bifocals and have trouble seeing my front sights because i can"t focus through the bottom portion of my glasses. Started wearing reading glasses when shooting and it reallly helped, I can see the front sight well now.
I solved the problem by having a pair of glasses made that are the bifocal portion of the lense only, which allows me to see very clearly, I also wear them while working on guns and while running my lathe and mill. Sure helps old eyes see again! O0
Check out two products; EYEPAL and HAWKEYE. EYEPAL is made my EyepalUSA; the HAWKEYE is made by Lyman Products.
Both attach to your eyeglasses (and come off easy) and gives you a 'pinhole' to sight through.
Ever play as a kid with a pinhole camera? It works the same way.
Even with shooting glasses I can't see the front sight clearly. With the EYEPAL I can.
I don't work for either one of them. I just found something that works and passing it along.
HTH
Douglas