S&W mode 41 shooting 6" high at 25yds

That's what I use. It shoots really well and no sighting issues. I think that would rule out ammo as your problem.
Any chance you could post some good photos of the barrel and sights?

taking a picture is no problem, but I have no idea how to post the pictures. There are pictures of my 41 on this sight, but I guess due to failing memory I cannot remember how to post them.
 
Only things I can think of at the moment, in no particular order:
1. Try removing the muzzle brake and see if it makes a difference.
2. Call S&W customer service and see if they can supply a shorter blade.
3. File the existing blade to a lower height.
4. Disassemble the rear sight to see if there is anything unexpected.
 
I did a Google search on 'muzzle brake and accuracy' and found an article from Field and Stream. URL attached below.
The line I found most applicable to you was:

"And finally there is this consideration: Of all the muzzle-braked rifles I've fired, none shot to the same point of impact with the brake on as they did with the brake off.".

Muzzle Brake Pros and Cons | Field & Stream
 
I did a Google search on 'muzzle brake and accuracy' and found an article from Field and Stream. URL attached below.
The line I found most applicable to you was:

"And finally there is this consideration: Of all the muzzle-braked rifles I've fired, none shot to the same point of impact with the brake on as they did with the brake off.".

Muzzle Brake Pros and Cons | Field & Stream


Thank you for your help.
 
If it was mine and the barrel is original to the pistol, I wouldn't start monkeying (bubba-ing) with the sights. Since barrels are easily changed, see if you can find someone with another 7 3/8" barrel and try it on your frame. See how it shoots with that barrel.
 
shooting off sandbag. Yes, I have had several people shoot it. I have been shooting all my life. It groups great...just 6" high.

Here's a thought: Sandbag technique. No offense intended; I've been shooting for decades myself, yet I'm always open to others' experiences and insight. That is, at least until they show themselves to be ummm . . . "off base." :)

So back to sandbag technique. Pistols on a bag can be troublesome with respect to point of impact. A lot of folks just rest the barrel on the bag. This in itself causes point of impact troubles. It's compounded by the tendency to gip the pistol lightly causing muzzle flip. Especially with a 22, you may be holding the pistol very lightly causing high impact.

I suggest, if you're not already doing this, that you grip the pistol just as you would when standing. Use the bag to support only your wrist. The pistol would remain untouched by the bag. This is less stable and will probably yield larger groups than resting the pistol on the bag. But, it should more truly represent a realistic point of impact.
 
Here's a thought: Sandbag technique. No offense intended; I've been shooting for decades myself, yet I'm always open to others' experiences and insight. That is, at least until they show themselves to be ummm . . . "off base." :)

So back to sandbag technique. Pistols on a bag can be troublesome with respect to point of impact. A lot of folks just rest the barrel on the bag. This in itself causes point of impact troubles. It's compounded by the tendency to gip the pistol lightly causing muzzle flip. Especially with a 22, you may be holding the pistol very lightly causing high impact.

I suggest, if you're not already doing this, that you grip the pistol just as you would when standing. Use the bag to support only your wrist. The pistol would remain untouched by the bag. This is less stable and will probably yield larger groups than resting the pistol on the bag. But, it should more truly represent a realistic point of impact.

+1 regarding not resting the barrel on the bag. I used to sight in guns while resting the barrel on a sandbag. It frustrated me to find the gun not shooting to the intended point when shot offhand. What I do now is hold the gun with both hands and rest my hands on the bag. I can't get the same small group size that way, but at least the point of impact does not change when I shoot it offhand.
 
A bit off track, I use a ransom rest. Check the consistency of the gun and rounds, then adjust the sights. Then off hand make further adjustments to suit the normal shooting position.

If the model 41 is shooting 6" high something is not right, unless the gun is held with the weakest of weak holds. .22 semi-autos are much more forgiving when it comes to the shooter with, weak hold technique, poor or low grip, and poor arm alignment. If your gun is grouping shots all 6" high the sights are the problem, regardless of what technique you are using. The fact that the shots are grouping means your technique is good. If it was mine I would file out the rear sight blade, if your worried about modifying the 41 then buy another rear blade and file that one keeping the original original.
 
A bit off track, I use a ransom rest. Check the consistency of the gun and rounds, then adjust the sights. Then off hand make further adjustments to suit the normal shooting position.

If the model 41 is shooting 6" high something is not right, unless the gun is held with the weakest of weak holds. .22 semi-autos are much more forgiving when it comes to the shooter with, weak hold technique, poor or low grip, and poor arm alignment. If your gun is grouping shots all 6" high the sights are the problem, regardless of what technique you are using. The fact that the shots are grouping means your technique is good. If it was mine I would file out the rear sight blade, if your worried about modifying the 41 then buy another rear blade and file that one keeping the original original.

Your right. Holding 6" low I can shoot nice group in 10 ring. I believe I will try and get a lower sight. I have plenty of guns to shoot, but always feel like I am spending time with Dad when I take it out. I did give wrong date. According to serial number it dates 1957. Thanks for everyone's help. It was much appreciated.
 
I would still have a look at the small rear spring under the rear sight. From the picture supplied it looks like you have it at the bottom of the adjustments to me. I went thru the same problem with my 1958 model M41 and it was the small spring tightened down too far.
 
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