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Getting frequent double shots

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Old March 25th, 2017, 05:54 PM   #1
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Getting frequent double shots

At the range today of 80 rounds I shot I got four doubles. These were not slam fires. After the first two I pulled the butt into by shoulder tighter and they went away for a while. Then I figured I may also have been too light on the trigger and pulled for more follow through. Got two more double doing that. Definitely seems to be shoulder bump firing.

Mix of reloads and XM80 ball. The bump firing seemed to be independent regarding the power of the ammo.

Any mechanical issues I should look at to stop this? Is this just an issue of technique? Kind of neat firing full auto double taps but not when I'm trying to print 10 shot groups. For what it's worth the second shot in each double is going 6-8 inches higher than first shot.

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Old March 25th, 2017, 06:07 PM   #2
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If you are exercising good trigger control the only reason for doubles is a defective trigger. If your trigger has been adjusted to remove creep it may be too light due to insufficient sear engagement.

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Old March 25th, 2017, 06:08 PM   #3
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"For what it's worth the second shot in each double is going 6-8 inches higher than first shot". Yep, it's called recoil!

Seriously, though, pull it FIRMLY into your shoulder and follow through on the trigger. If it is not your firing technique, you may have a rifle problem.

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Old March 25th, 2017, 06:12 PM   #4
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The usual question I ask:

Is the 2nd shot firing while you are pulling the trigger, or when you release it?

If it doubles while you are pulling the trigger, then either you are "milking" it or the rear hammer hooks aren't always engaging.

It the 2nd shot occurs when releasing the trigger, then the front hammer hooks aren't engaging.

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Old March 25th, 2017, 06:15 PM   #5
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Shooting off a bench?

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Old March 25th, 2017, 06:17 PM   #6
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remove trigger group,inspect pins and look for defective parts

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Old March 25th, 2017, 06:20 PM   #7
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Quote:
Originally Posted by Ted Brown View Post
If you are exercising good trigger control the only reason for doubles is a defective trigger. If your trigger has been adjusted to remove creep it may be too light due to insufficient sear engagement.
No trigger adjustments. It's a SA loaded which comes with a NM trigger job.

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Old March 25th, 2017, 06:25 PM   #8
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Quote:
Originally Posted by ripcord View Post
"For what it's worth the second shot in each double is going 6-8 inches higher than first shot". Yep, it's called recoil!

Seriously, though, pull it FIRMLY into your shoulder and follow through on the trigger. If it is not your firing technique, you may have a rifle problem.
The problem stopped when I applied firm shoulder pressure. However when I deliberately pulled the trigger through for more follow through the doubles started again. It frankly feels a lot like bump firing. What seemed to work best is firm shoulder pressure and what I have always considered a normal/moderate trigger pull.

I would occasionally have the same issue with my Garand years ago. Not as frequently as this.

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Old March 25th, 2017, 06:26 PM   #9
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Quote:
Originally Posted by KurtC View Post
The usual question I ask:

Is the 2nd shot firing while you are pulling the trigger, or when you release it?

If it doubles while you are pulling the trigger, then either you are "milking" it or the rear hammer hooks aren't always engaging.

It the 2nd shot occurs when releasing the trigger, then the front hammer hooks aren't engaging.
Happening too fast for me to tell for sure. It seems like bump firing to me.

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Old March 25th, 2017, 06:26 PM   #10
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Shooting off a bench?
Yes

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Old March 25th, 2017, 06:37 PM   #11
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Quote:
Originally Posted by Badger5th View Post
Happening too fast for me to tell for sure. It seems like bump firing to me.
Take your "unloaded" rifle and do a function check:

Cock the hammer.

Pull the trigger to the rear and hold it. The hammer should fall.

With your other hand, rack the operating rod. Does the hammer recock or does it follow the bolt home?

If it cocks, release the trigger. Did the hammer fall or did it reset to the front hammer hooks?

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Old March 25th, 2017, 06:52 PM   #12
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Quote:
Originally Posted by KurtC View Post
Take your "unloaded" rifle and do a function check:

Cock the hammer.

Pull the trigger to the rear and hold it. The hammer should fall.

With your other hand, rack the operating rod. Does the hammer recock or does it follow the bolt home?

If it cocks, release the trigger. Did the hammer fall or did it reset to the front hammer hooks?
Function check as described is normal.

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Old March 25th, 2017, 07:01 PM   #13
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Quote:
Originally Posted by Badger5th View Post
Function check as described is normal.
If the hammer recocked and then reset to the front hooks, the rifle is most likely mechanically sound.

That would mean you are probably not following thru on your trigger pull.

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Old March 25th, 2017, 07:10 PM   #14
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If the hammer recocked and then reset to the front hooks, the rifle is most likely mechanically sound.

That would mean you are probably not following thru on your trigger pull.
I think what may be happening is that I am not griping the small of the stock firmly enough. Therifle is firmly in my shoulder pocket. When the rifle recoils it slides back in my hand pulling my trigger away from my finger. In this time the rifle cycles and reloads. When I have tried to follow through I frequently get what appears to be a bump fire double.

I have this identical same issue when shooting my AK. It only happens when bench firing. I have never had this happen during position shooting.

I'll have to work on some of my basics some more.

Regards,
Badger

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Old March 25th, 2017, 07:16 PM   #15
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You having this issue with more than one rifle seems to be a good indication that its you and not the rifle. Hold the pistol grip firmly, not a death grip, and keep it snugged up against your shoulder and do as suggested on pulling the trigger.

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