M1 sighting question

Status
Not open for further replies.
M

Mals9

Member
Joined
Mar 13, 2010
Messages
145
Location
St. Louis
I am trying to sight in my SA M1 at 100 yards. I have the elevation only 1 click above being bottomed out. I am holding 6 o'clock on an 8" target and the POI is 2" to 3" above the bullseye. I have always read that at 100 yards the elevation should be about 8 clicks. Any thoughts or suggestions?

Mals
 
M1 Garand should be around 8-10 clicks up from bottom for 100 yds....My 1942 SA is 8 clicks up for 50 yds....10 is 100 yds an 200 yds....13 from bottom is 350 yds an 19 from bottom is 540 yds...this is with the CMP Greek HXP.
 
This may sound silly, and dont take it the wrong way, but are you familiar with shooting apeture type sights?

I know a few people who never shot them, and they didnt understand that you just "look through" the rear sight without any thought, and "aim" with the front sight.

Another thing to look at would be the front sight blade. Does it look like it might have been fooled with or filed down?
 
Sounds like the front sight to me too. Mind you, the ammo you're using can have some to do with it as well.
"...2" to 3" above the bullseye..." That'll put in on farther out. Depending on the ammo.
 
I have been shooting aperture sights on a .22 for a year or so and am very familiar with them. I just received the rifle from the CMP about 2 months ago along with some Greek ammo. The front sight looks original as far as I can tell. The results make me think the front post is to high but I doubt that the CMP would let somehting like that get through. Could there be some tightness in the stock that could cause this?

Mals
 
If the front sight were to high, it would be shooting "low". The actions made on the front sight act in reverse of how you think.

Definitely sounds as if something is out of whack. Maybe call the CMP and see what they say, they may take care of it for you.
 
Hang on, is your rifle in a Commercial stock?? If so this is a normal occurance and its not unusual to have to do some fitting on them.
Post on here if its commercial wood and I can tell you what to look for
 
Calibrating the sight knob will have absolutly no bearing on the number of clicks and POI

You need to tear down the rifle and check some things. Dissasemble rifle, remove rear handguard, assemble rifle again but leave the rear handguard off. Check to see if the barrel channel is to narrow and it is holding the barrel up ( this will cause rifle to shoot high). If so, remove some wood from the sides as shown on the pic on the left. Make plenty of clearence
barrelchannel.jpg
Also you the tilt test , also check stock ferrule fit. It should be tight and Op Rod should not rub.
Let me know what you find out
 
Last edited:
It is wearing a new CMP stock
100_2183.jpg
I have failed the tilt test, part 2, with the action held in the stock. The bolt will not open. I have removed material at the stock ferrule. There is still a small amount of resistance when the bolt is alsmost fully closed. I will have to double check the wood clearance. I will look at that now and get back to you.
rcmodel sorry for the double post, as I was posting my computer battery died and I reposted before I realized it went through.

Mals
 
So I now pass the tilt test. I snugged up the ferule and removed a bit of wood. The barrel does not touch the wood, I can run a sheet of paper under it with no restrictions. I went ahead and removed a bit of wood just for insurance. Any other thoughts?

Mals
 
I have only had issues with three Garands and they all had commercial stocks. Sometimes you have to keep working on them alittle at a time.
Did you check the front sight height to make sure it isnt short?
I'm 99 % sure its stock related but doesnt hurt to check
I would fire it and see if there is any improvement.
Dont fire 8 rds and give up, when you remove the Garand action from the stock it "can" take several enblocs or more for action to set in and accuracy to return.
boydsstockproblems.jpg
 
Does the lower band fit tight on the barrel or is there any movement, there should also be a space or gap between the lower band and the stock ferrule.
Does the rifle shoot different POI when its heats up?
Should be a buissness card thickness space between the rear handgaurd and receiver and front handguard should have the same
 
The lower band is tight with a slight rotational movement each way of about 1/8", no front to rear movement at all. There is about 3 cards worth of space between the lower band and the stock ferule. When assembled there is no movement of any part of the stock, everything is solid, no rattles. The front sight mic'd out at .720 from base to top of the blade at the front.

Mals
 
Its best to have no movement in the band. Probably will have no affect with elevation. May have some affect on accuracy.
Take her out to the range and see if anything has changed.
 
I hope to get out this weekend and see what happens. I will get back to you. Thanks Orlando.

Mals
 
If you still have problems I know a guy that has more experience than I do building Garands, troubleshooting etc. I can get in touch with him
 
I spoke with Phil at the CMP today and he is sending me 2 new apertures. He thinks the one I have may have the hole drilled to high. Should have them tomorrow or Saturday and for free. How is that for service!

Mals
 
Never heard that one before.
If you can would you shoot it first before you change apetures? Just curious to see if problem is fixed before changing the apeture.
If it still shoots high after the apeture change I think I may be onto something else with these commercial stocks.
Let me know
Thanks
 
The CMP rocks...makes me wonder if they had this problem before with the sight aperture hole? Also I put new CMP wood on my first CMP Garand, didn't have to do anything to it, but it took 20 or 30 shots to get it settled with the reciever...after a few shots I adjusted...then shots started moving...adjusted...then I read somewhere to just shoot 20 or so times before trying to sight in...seemed to be the case with mine..come to think of it..I did have to sand a little in some areas, not much, an did this before shooting.
 
I finally got some trigger time today and I am now at 5 clicks up from bottom instead of 2 and the POI is about 2" above the POA which is what i want. I did not change out the aperture. I am getting 3" to 4" groups at 100 yards and I am pleased. I shot 24 from the bench, unsupported with a sling, and 8 prone. It was a fun morning. What does this tell you Orlando?

Mals
 
I would give it two more clicks down and you will be dead on.
Sounds like she is shooting well now.
It would be interesting to change apetures and see if it makes any difference.(never heard of that one before)
FYI, eveytime you remove the action from the stock it can take firing 25-40 rds to get the action settled back in stock for accuracy to return.
 
The front sight mic'd out at .720 from base to top of the blade at the front.
Click to expand...

i checked our two and this looks good. (one measured .719 and the other .720.

both of ours zero at 100yds with 12 clicks up.
 
None of my Garands are the same amount of clicks up at 100yds. They range from 2 clicks to 11. Its no exact science
 
Status
Not open for further replies.

Similar threads

M
  • Locked
M1 sights question
Replies
1
Views
423
rcmodel
R
R
  • Locked
iron sights and 6 oclock hold
Replies
9
Views
1K
1KPerDay
1KPerDay
E
  • Locked
Weird Garand sighting problem
Replies
12
Views
729
GarandOwner
G
S
  • Locked
Questions between fixed A2 sights and DCH sights for A3 - how to interpret or convert
Replies
1
Views
389
Canuck-IL
C
R
  • Locked
AR15 100 yard zero
Replies
10
Views
4K
jpwilly
J
Back
Top