Need Help:1911 shooting low,waaaaay too low.

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Coachgun67

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Ok,so there it is: distance to target: 15 yd. (540 in) .45acp 1911 shoots 14 inches below POA at that distance. That is with Wolf 230 LRN (875fps). So I tried my over the upper scale reload 200 fmj that I usually only feed to my ruger revolver (988fps) ...18" low :confused: ,Ok I see the trend,so I tried my 200 lead SWC "squib" reload (695fps)that gets used in fragile antiques,still 12" low. L/R center dead on.Sure,adjustable rear comes to mind,BUT I like the service pistol look and want it to keep that way, filing down the front blade is no option,because I'd have nothing left there. Doing the math, I have to come up with the rear or get the front down by .15" (3.8 mm)... my front blade is about half that high and adding that to the rear would look ridiculous.The internals of my 1911 look good,no wear,barrel bushing tight,barrel straight ( centered bored...I checked that on my lathe). Did I miss something and what are my options here?
CG
 
I have the exact same problem with a can am package norinco. so low cant even get it on paper at less than 20'. Seems to be assembled correctly, function is fine. I am watching the replies.
 
If it's grouping well enough for you, I think that a new set of sights is your only option. I'm having a similar issue with my CanAm Norc except it's shooting about 3-4" high at that same range. New sights for me and I'll be golden...

BTW, how do you do the math to determine what size sights to get? I know I need a taller front sight, but don't know how much taller.
 
If I want to check and see if my sights are accurate enough I will try three slow, careful shots resting the gun as I shoot. Doing this procedure can show me quickly whether my sights are accurate enough and if not what the problem may possibly be. Other than that I'm with mildcustom2 on this one.

Try this, with the gun unloaded of course, the slide forward in battery and a standard one hand grip, give the gun a good shake up and down and side to side. If you hear a lot of shake, rattle and roll then as mildcustom2 said the slide could be out of spec or there maybe excessive play between the barrel bushing and the barrel.
 
Garonimus said:
If it's grouping well enough for you, I think that a new set of sights is your only option. I'm having a similar issue with my CanAm Norc except it's shooting about 3-4" high at that same range. New sights for me and I'll be golden...

BTW, how do you do the math to determine what size sights to get? I know I need a taller front sight, but don't know how much taller.
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You divide how far she's off POA in inches trough the target distance,also in inches and multiply that with your sight radius (distance from front to rear sight)in inches...in my case 14"/540" x 6" = 0.155554"
 
mildcustom2 said:
Someone had to say it. ;)

Seriously though, OP just because your barrel was manufactured straight does not mean your barrel is sitting straight in the slide when it's installed. I'd look at possibly the slide being out of spec.
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No worrys,I'm not a brandname freak and i know what i paid for...would be nice if i can get her to shoot for that price,tho.I'll check into that.
 
sentry7 said:
If I want to check and see if my sights are accurate enough I will try three slow, careful shots resting the gun as I shoot. Doing this procedure can show me quickly whether my sights are accurate enough and if not what the problem may possibly be. Other than that I'm with mildcustom2 on this one.

Try this, with the gun unloaded of course, the slide forward in battery and a standard one hand grip, give the gun a good shake up and down and side to side. If you hear a lot of shake, rattle and roll then as mildcustom2 said the slide could be out of spec or there maybe excessive play between the barrel bushing and the barrel.
Click to expand...

No rattle at all. Seems pretty solid,my bushing is tight ( as are the groups) my link has a little up/down play,but not enough to make 14" at 15 yd.Still have to check if the barrel sits straight in the slide...
 
FORS is the key for sight adjustment - Front-> Opposite, Rear -> Same. So shooting low you need either a higher front, or a lower rear. Seems you were suggesting lowering the front which would be the wrong way to go.
 
T&G said:
FORS is the key for sight adjustment - Front-> Opposite, Rear -> Same. So shooting low you need either a higher front, or a lower rear. Seems you were suggesting lowering the front which would be the wrong way to go.
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If your low you need a lower front site as that changes your point of impact UP. Lowering FS - > POI up. Higher FS -> POI down. Imagine your front sights aligning with the back sights from the side and not behind the gun. If you lowered your front sites you have to raise the muzzle of he firearm to now meet the notches of your rear site.
 
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