A question for owners of the Crosman M4-117

[birdmove]

       I have astigmatsim and can no longer use traditional open sights. When I try, I get a kind of a ghost image of the front sight post, which doesn't work well. I"m wondering if the peep sight setup on the M-417 aids in getting a sharp image of the front sight and target. I'm talking about the pinhole effect well known to photographers. I see the airgun has two different sized rear peep holes, and think the smaller one might help the most.

    Anyone have any comments on this?

[Back_Roads]

 Peep sights work better for me than standard iron ones, truglo sights help some but not in all lighting conditions.

[longhunter]

actually, the larger one will work better. if the hole in the peep is too small, it will look like the peep is full of dust, or cobwebs. you could always start with a small one, and drill it out, until it looks clear, when you look through it. I have to do that to all my peep sights, myself.

[RobertMcC]

Big peep is suppose to be for closer quicker shots, and smaller is for more precise.

[longhunter]

guess nobody told my benji397P, or my crosman101 that they aren't supposed to shoot 3/8" groups at 30yds.
can't hit what ya can't see clearly.

[birdmove]

    I'm going to eventually look into Lasik eye surgery, as I understand it can fix astigmatism. Although, I can get very good clarity with a rifle scope with adjustable rear lens and AO. But, as a long time shooter of all kinds of firearms, I miss not being able to use open sights. I even had to use a handgun against a home invader many years ago  (no shots fired). The thought comes up, what happens if I get a loony smashing his way into my hose now, like the one did on November 1st, 1976 (I remember as it was my 22nd birthday). Seeing two front sights isn't conducive to any kind of accuracy. Guess I could pull out my old 12 gauge side by side.

[big_o_lar]

    I'm going to eventually look into Lasik eye surgery, as I understand it can fix astigmatism.

November 1st, 1976 (I remember as it was my 22nd birthday)

lol your problem isn't astigmatism is presbyopia[63yr old] and lasik cant fix that

[birdmove]

    SWhy,you young whipersnapper....

[big_o_lar]

    Why,you young whipersnapper....

I'm 60 with astigmatism and presbyopia just go get you some glasses.
The only gun i can shoot good iron sight is a daisy 853 with a peep so it should work for you.

[Redleg]

My far-sightedness has resulted in my inability to use ordinary open sights at all - One exception is that I acquired safety glasses with bi-focal dual corrective lenses of my prescription strength.  A lens at the top of the glass and an identical strength lens at the bottom.  These glasses are made for craftsmen who have a need to read or see details above themselves while working down low.  With open sights, these
safety glasses allow me to view the target  through the uncorrected portion of the glass.  I can very clearly see the rear sight and front sight through the upper corrected part of the glass.  When I need to
see to load a pellet (for example), I can see this through the lower corrected lens.   It was very easy to adjust to this for shooting at 10-25 yards.  I hadn't been able to see through iron sights for many years.  I removed several scope from my 880, APX-NXG, 760.  This also works very well with pistol shooting iron sights.  These dual bi-focal lens safety glasses can be found at Amazon and others on the net for
less than $20.

I can however, shoot through my Williams peep sights with my ordinary glasses pretty well without using the dual lens safety glasses.  The success with peep sights led me to make a peep for my
vintage Daisy 25 BB gun because I found out I could shoot the new model Daisy 25 that comes with a peep sight on it.

One final note I would share is my optometrist recommended that I shoot using a weakened strength bi-focal reading glass which allows me to see the back sight clearly while seeing the target ok through the uncorrected part of the reading glasses.  I found this to work ok for plinking but not so much for more serious precision shooting.  I like the safety glasses mentioned earlier better.

[birdmove]

    Interesting information there, Redleg!   I even bought a cheap set of pinhole glasses from Amazon. They make the comet shaped dot in red dot/green dot sights become precise round dots, but are kind of distracting to use.These glasses have many same sized pinholes. The distraction comes from, unless you look just right, the pinhole you are sighting through swaps to another hole, and alignment is critical.

[Redleg]

Birdmove:  I'm going to have to try out the pinhole type glasses!  you have really piqued my interest!