GlennRasch Posted September 11, 2011 Share Posted September 11, 2011 We took it out 2 it's 1st. match today...........the gun shot 100 %, but would not holed a zero . We would go and sight it in, shot a stage and go sight it in again..? The scope mount and c-more are tight....... Link to comment Share on other sites More sharing options...
Sarge Posted September 11, 2011 Share Posted September 11, 2011 Is it new? Call and let them know. Sounds like a bad module? Anybody? So far mine has held zero since May. Knock on wood!! I have heard some hold forever and some hold for literally only a few minutes when bad. Please let us know what you find out when this all shakes out. Link to comment Share on other sites More sharing options...
Aircooled6racer Posted September 11, 2011 Share Posted September 11, 2011 Hello: Which way is the dot moving? Up/down or left and right? Did you tighten the locking screws? Are the locking screws stripped? Thanks, Eric Link to comment Share on other sites More sharing options...
GlennRasch Posted September 11, 2011 Author Share Posted September 11, 2011 The c-more is NEW.....the dot is moving down to right, zero it out, shot a stage and the dot moved again. The locking screws are tight and not striped. Link to comment Share on other sites More sharing options...
GlennRasch Posted September 11, 2011 Author Share Posted September 11, 2011 The c-more is NEW.....the dot is moving down to right, zero it out, shot a stage and the dot moved again. The locking screws are tight and not stripped. Link to comment Share on other sites More sharing options...
Aircooled6racer Posted September 11, 2011 Share Posted September 11, 2011 Hello: Check the C-More mount screws (big ones) again to see if they are tight. Next check to see if the elevation adjustment screw is not just floating with no tension. That is the standard elevation screw which is normally on top but now on it's side. I have a couple of C-Mores where it took a couple of turns to tension it on the sideways mounts so it would hold zero. The screw was just lose and once it had some tension everything worked out fine and are still holding zero. Hope this helps. Thanks, Eric Link to comment Share on other sites More sharing options...
GlennRasch Posted September 11, 2011 Author Share Posted September 11, 2011 Hello: Check the C-More mount screws (big ones) again to see if they are tight. Next check to see if the elevation adjustment screw is not just floating with no tension. That is the standard elevation screw which is normally on top but now on it's side. I have a couple of C-Mores where it took a couple of turns to tension it on the sideways mounts so it would hold zero. The screw was just lose and once it had some tension everything worked out fine and are still holding zero. Hope this helps. Thanks, Eric I'll try that and see if that works.....I'm also going to call Sean at Power Factor and get a new module on Monday. Link to comment Share on other sites More sharing options...
tacticalchef Posted September 11, 2011 Share Posted September 11, 2011 Had a buddy of mine and his wouldn't hold zero. One of the set screws on the c-more was a tad too long. So while it seemed tight, it wasnt snug against the adjustment screw. He just had to take a little length off of the set screw. Works like a charm now. That was at least a year and half ago. for what is worth. best of luck.. blake Link to comment Share on other sites More sharing options...
Mat Price Posted September 12, 2011 Share Posted September 12, 2011 check your grip screws.. I fought traveling zero for a week till I found my grip screw were loose. Blue lock tight and now it holds zero. Link to comment Share on other sites More sharing options...
andoy Posted September 13, 2011 Share Posted September 13, 2011 give this a read through... http://re-gun.com/2011/05/c-more-care-and-feeding-fixing-wandering-windage/ Pretty good write up by Dave Re. Link to comment Share on other sites More sharing options...
Aglifter Posted September 13, 2011 Share Posted September 13, 2011 I've been having a similar problem - do you have the Al frame version? (I do.) I'll try some of the ideas on here. Link to comment Share on other sites More sharing options...
DyNo! Posted September 14, 2011 Share Posted September 14, 2011 I had the same problem this weekend at a major match. I couldn't hit anything with my pistol and I know I don't shoot that badly. I zeroed the gun and put it in the safe for a week - I took it out for a pre-match practice session/function check and my POA/POI looks like this at 25 yards: (The group should be centered at the point of the sticky note - ignore the .22 holes) Fortunately and unfortunately, my performance didn't hurt my finish but next time I'd like to make sure my pistol shoots straight. Anyone try the trick yet? Link to comment Share on other sites More sharing options...
GlennRasch Posted September 14, 2011 Author Share Posted September 14, 2011 I noticed that the module would rock front to back, even with the module locked down. I put another module in and going to the range tomorrow......... Link to comment Share on other sites More sharing options...
Aircooled6racer Posted September 14, 2011 Share Posted September 14, 2011 Hello: If the module is lose then that is your problem. It should be a snug fit with no movement. Thanks, Eric Link to comment Share on other sites More sharing options...
GlennRasch Posted September 15, 2011 Author Share Posted September 15, 2011 Well that didn't work ......... talked to C-More this morning, putting it in a box and shipping it off. Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted September 15, 2011 Share Posted September 15, 2011 check your grip screws.. I fought traveling zero for a week till I found my grip screw were loose. Blue lock tight and now it holds zero. I believe Mat has the answer for you - I had the exact same problem, and this problem has been discussed on this forum just a few days ago (a week?). My 9mm major STI TruBor wouldn't hold a zero for an entire match. Turns out the grip screws were loose, just as Mat mentioned three days ago... Soon as I tightened the screws (I loc-tited them) the problem disappeared, and that's two years ago:)) Good luck. Jack Link to comment Share on other sites More sharing options...
Mat Price Posted September 15, 2011 Share Posted September 15, 2011 yep mine is still holding zero. here is a link to the thread. loose grip thread. My target would start out tight and within a mag would be all over like that. Now I shoot one hole @ 15 yards Link to comment Share on other sites More sharing options...
GlennRasch Posted September 16, 2011 Author Share Posted September 16, 2011 OK guy's............... Thank's for all the in put I put a back up C-More on to day to try that.... gun shot AWESOME . Shot about 100 rounds and it stayed at zero all day. Link to comment Share on other sites More sharing options...
warpspeed Posted September 16, 2011 Share Posted September 16, 2011 That is strange. Let us know what C-More says about the one that would not hold. Link to comment Share on other sites More sharing options...
GlennRasch Posted September 24, 2011 Author Share Posted September 24, 2011 That is strange. Let us know what C-More says about the one that would not hold. Talked to C-More today........ they are looking at it, that's all I know now. Link to comment Share on other sites More sharing options...
Unregistered Posted November 24, 2011 Share Posted November 24, 2011 That is strange. Let us know what C-More says about the one that would not hold. Talked to C-More today........ they are looking at it, that's all I know now. Any updates for those that might stumble across this thread in the future? Link to comment Share on other sites More sharing options...
BlackBuzzard Posted November 24, 2011 Share Posted November 24, 2011 check your grip screws.. I fought traveling zero for a week till I found my grip screw were loose. Blue lock tight and now it holds zero. I believe Mat has the answer for you - I had the exact same problem, and this problem has been discussed on this forum just a few days ago (a week?). My 9mm major STI TruBor wouldn't hold a zero for an entire match. Turns out the grip screws were loose, just as Mat mentioned three days ago... Soon as I tightened the screws (I loc-tited them) the problem disappeared, and that's two years ago:)) Good luck. Jack I am having the same drifting C-more issues, and ( to my surprise) my grips screws are loose. Can someone explain how my loose grip screws cause the zero point to drift (3in at 17 yds) over the course of say 150 rounds? The mount is securely attached to the frame and the cmore is tight on the mount......that critical geometry is fixed rigid and is not loose. BB Link to comment Share on other sites More sharing options...
Mat Price Posted November 25, 2011 Share Posted November 25, 2011 Because your grip is the attachment point for your frame. just a little bit of slop in the area translates to allot of muzzle deviation from center. since your mount is attached to your frame the entire frame is moving with in the grip. Or in my case my grip strength tends to squeeze the gun in different directions. Think of it as loose grips screws cause a swivel point instead of an anchor point. OF Course we are talking on a 2011 platform only Mat Link to comment Share on other sites More sharing options...
supreme135 Posted December 16, 2011 Share Posted December 16, 2011 I had the same issue but mine settled in after a while. I keeped marking the srews because they would move on every match. One day it just stopped and has been perfect ever sense. Link to comment Share on other sites More sharing options...
TriggerJockey Posted September 28, 2012 Share Posted September 28, 2012 I had this same problem and it literally drove me crazy for like a week. I can't stand not understanding anything to do with my match setup. Mine turned out to be two things: One, my grip screws were lose. Two, my comp was moving about a degree when I fired because my mountain of red loctite on both it and the set screw must have gotten cooked by all that 3n37.... Now that those items are taken care of I am no longer seeing groups that could pass for buckshot at 40 yards! Link to comment Share on other sites More sharing options...
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