rack&roll Posted August 27, 2014 Share Posted August 27, 2014 Due to my aging eyes, I just purchased a mount and adaptor for my C-More STS to go on my STI Edge .40. (It's for a Bomar sight-cut.) It went on easily, and fits great. My problem is- when sighting it in even with elevation adjusted all the way up...it shoots about 6" low @ 25yrds. What can I do to fix this? Possibly a shim? If so, what to shim it with, and how thick? I also noticed that when shooting, if the dot goes just a little lower than halfway down in the glass, it disappears! Like there is a line that the dot cannot cross without vanishing. Is this normal? I appreciate any help you can offer. Link to comment Share on other sites More sharing options...
mookman Posted August 27, 2014 Share Posted August 27, 2014 I had exactly the same problem with a Glock 17, no way could I make it zero. I contacted C-More and they said it was a drop in fixture. I sweated blood making shims from feeler guages but i got so frustrated in the end I sold the sight ,then the Pistol. C-More do make shim packs so do other dealers.. I now shoot a 2011 with side mount and a Railway, I have had no problems since. Hope you sort out the problem, Regards, Malcolm. Link to comment Share on other sites More sharing options...
EkuJustice Posted August 27, 2014 Share Posted August 27, 2014 If your gonna go dot just have the frame tapped for a frame mount. Link to comment Share on other sites More sharing options...
Reshoot Posted August 28, 2014 Share Posted August 28, 2014 If your gonna go dot just have the frame tapped for a frame mount. What he said. Get away from the slide mounted dot. You'll be glad you did Link to comment Share on other sites More sharing options...
rack&roll Posted August 28, 2014 Author Share Posted August 28, 2014 If you can help me with my specific questions, I would really appreciate it. I am going the route I'm going for financial reasons, and I really don't want to invest in a 9mm or 38super open blaster at this moment. I already have two .40 barrels, 1 will be ported, 1 not ported. I will still have my limited gun intact, the slide ports will just become lightning ports when I put the Bomar back on and use the non ported barrel. If you have any ideas on sighting my gun in "as it is" I thank you in advance. BTW- I really don't want to drill holes in my gun's frame for resale purposes, if I ever really decide to sell it to fund a "real" open gun. Link to comment Share on other sites More sharing options...
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