To mod or NOT to mod . . . That is the Question?

[fn111557]

FIRST no pics yet, it was late when I got home and cleaning takes precedence over picture taking.
I just got a chance to take my new IBM (AO) to the range. I have printed out homemade copies of the old 25 yard sighting target. I set out 4 targets at the 25 yard marker. The first 3 I shot 5 round groups at each and a complete 15 round mag. at the last one. I was very impressed at the groups, my shooting skills are very suspect. The problem is ALL 4 targets had the shot groups at 12 o’clock very top of required impact area. I took a couple 6” sight-N-see targets out to the 50 yard marker. The first 15 round mag, using center of target as POA, had a decent group of holes about 4” above target. The next mag, I shot in 3 round groups at the last target. I walked the groups down by having a final POA about 4” below the target center.
My question is should I add a bead of “JB Weld” to the top of my front sight and re-file to correct aiming problem? Or should I just change the sight to a higher one? I love the way this thing groups, and will probable just keep shooting this until it groups like a shotgun!
Here is a pic of sight in question;

Information

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[imarangemaster]

I have used JB Weld for that purpose, and it works well. If it is a shooter and not a museum piece, I would go that route. I roughened up the top of the sight with a file to give the JB Weld a better grip. Put a gob on, let dry, and file.

[INLAND44]

Notice on this 100 yd sighting target that the aiming point is at the bottom edge of the allowable impact zone, not the center. The same is also true of the 25 yd target. Your sight blade may be a little low, but if you accurately reproduce the target and aim at the correct point, it sounds to me like your carbine would be acceptable.

[imarangemaster]

Good point. Are you holding 6 o'clock on the bottom edge of the target? If you hold center, you would print high. Here is an example of my CMP Inland with a 6 o'clock hold

[Buntlineguy]

Unless you are going to sell or trade it, do what is comfortable for you. After all, it's your gun.
B

[fn111557]

Pics added to show difference in shot location. Carbine1 is sighted in good for me shown in 25yard and 50yard targets, Carbine2 (with short front sight) shoots high, and higher still the further out you go!

Carbine1 at 25 and 50 yards,



Carbine2 at 25 and 50 yards (POA red center),

[Harlan (Deceased)]

I'd for sure add a bead of JB or solder if it made me happy with the hold I like to use. It wouldn't need much as close as you are now, and a small dab of flat black paint, etc would make it barely visible.

They filed original front sights to adjust them anyway. If you ever wanted to return the sight to where it now is for some reason you could easily file off the added portion or even replace the blade.

If you really didn't want to alter the sight for collector reasons you could even use something less permanent like glue to build up a bead that would stay there under normal usage but could be removed later with solvent.
(JMO)

[imarangemaster]

I also used a drop of crazy glue to hold a small piece of flat spring stock (from a 5 round stripper clip). I filed it to the dimension of the top of the sight, then blued it and put flat black paint on it. That was for one I used as an LEO trunk weapon that I had to qualify with bi-annually. I set it for a 6 o'clock hold on a head sized silhouette target we shot at 100 yards (7 of 10 shots had to be in). Always qualified with it first try.

[INLAND44]

Your carbine in fact is within the original mil tolerance as clearly shown by all but 2 of the shots being within or cutting the dotted line area. Looking at the top of your sight, it obviously has been filed down as illustrated in the manual for raising the point of impact. This was most likely done during initial sighting before shipment. Possibly they went too far on this one or the sight has been changed. You could put a taller sight on it if you want both carbines to shoot the same, but your first carbine is actually shooting rather low. Maybe swap the sights between them and see how that comes out? Again, the original concept was that the sight blade not obscure the target (enemy combatant) and allow for faster target acquisition. You can modify this sighting concept to suit your needs, but it may be wiser to leave a collectible WWII weapon just as it was used then.