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What gives?

OP
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Thin barrel? Heat? Beats me. Unless you all started to strain under two shots and pulled the last.

These threads really are hard to understand anything with so much information left out. Gun? Ammo? Etc...

One could say anything.
Rifle is a ar308 aero receivers, rainier select 20" barrel. A few yrs ago this rifle could shoot clovers at 100yds with hand loads. Took her out 3 weeks ago and it was shooting all over(using same hand loaded ammo) picked up some factory match ammo and that picture is the results.
 

Reno

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Rifle is a ar308 aero receivers, rainier select 20" barrel. A few yrs ago this rifle could shoot clovers at 100yds with hand loads. Took her out 3 weeks ago and it was shooting all over(using same hand loaded ammo) picked up some factory match ammo and that picture is the results.
Hmm? Got me. Sounds like everything is in order.

Perhaps a good thorough cleaning might be in order. Especially the bore. Get some copper solvent. Keep running patches till it comes out clear.
 

ron

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Perhaps a good thorough cleaning might be in order. Especially the bore. Get some copper solvent. Keep running patches till it comes out clear.
As others have stated maybe something loose?:oops: Sometimes there is a problem with build up of a carbon ring in the barrel throat. First
clean the CU out of the bore letting the Hoppe's soak at least 12 hours until the patches do not come out blue.
May take several days. Then clean it with JB Bore Paste. Competition shooters use it about every 1K rounds after break in.
Try at least 5 shot groups. As for different impacts of different shooters is due to how they are holding the rifle.
1580292503336.png
 
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I have a M77 Ruger "All weather warrior" stainless with a very light profile barrel and often run into the same thing by the 4th round. Not that I've ever needed more than 1 to take down a deer. Target shooting or checking for zero before season, it's quite common to have a flyer by the 4th round if fired in in close secession. I use the same load/ammo in many of my heavy barrel guns and have no issues and can cut the same hole all day long.

Not knowing your barrel profile, that could be the possible issue and just what I've experienced with my Ruger.
 
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Hello:
You mentioned hand loads.
My qeuss you didn't trim the brass back after reloading a few times and the brass s now too long on some which presses the mouth of the case where the chamber ends possibly ???
Just a qeuss thooo .
Head Shot
 
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What would cause this?

3 shot group, 3 different shooters same results. 1st 2 shots touching last shot is a flier.

308 factory match ammo.

View attachment 654671
Here is an article that might shed some light....
"This Month's Shooting/Safety Tip

During our member town hall meeting last month the subject of basic shooting skill development came up and I thought this would be an appropriate time to repeat a previous tip on how to diagnose typical shooting errors.

Don't hesitate to call me or ask any of our instructors for clarification of these tips or assistance with your shooting.

Diagnostics To Some Common Shooting Errors

Most of the shooting errors I see at the range are a failure to properly apply the two most important shooting fundamentals: sight alignment and trigger press. However, other factors may also cause a shooter to have problems in properly delivering a shot to the target. The shooting situations listed below assume that the handgun and ammunition are functioning correctly, that the handgun sights are adjusted properly and that the shooter is right-handed. The shot groups for a left handed shooter will appear on the opposite side from the shot groups as described here. Here are some possible causes to your misses if you are aiming for the center of the target but, are producing hits in the specific quadrants called out below.

SHOTS in Lower Left Quadrant: This pattern is caused when the shooter jerks the trigger, causing the front-sight to dip low and to the left before the bullet leaves the barrel. To correct this type of error, the trigger must be slowly pressed until the shot fires, being careful while pressing not to disturb the sight alignment and sight-picture.

SHOTS in 9 o'clock position: This pattern is created when the shooter does not properly place the index finger on the trigger. In such cases, the shooter has a tendency to press the trigger at an angle instead of straight to the rear. This improper press causes the muzzle to shift to the left, with the shots striking in the 8:30 to 9:30 zone.

SHOTS in Upper Left Quadrant: This is caused by 'riding the recoil'. This is where the shooter anticipates the recoil and makes the handgun recoil before it really happens. This type of pattern can also be caused by improper follow-through. The shooter releases the trigger finger too soon and may flip the finger forward, causing the front-sight to rise to the left. Errors of this nature will usually produce shots in the 9:30 to 12 o'clock zone.

SHOTS in Upper Right Quadrant: Here the shooter has 'heeled' the shots high on the target. This error is caused by anticipating the shot and, at the last moment before firing, giving the handgun a slight push with the heel of the hand. The front-sight moves up to the right and the bullets strike the target in the 1 o'clock to 2:30 zone.

SHOTS in the 3 o'clock position: Here the shooter 'thumbs' the handgun. Just as the shot begins, the shooter pushes the right thumb against the side of the frame, causing the aligned sights to move to the right.

SHOTS in the Lower Right Quadrant: This target illustrates what happens when a shooter's grip tightens as the trigger is pressed. This target area is known as the 'lobster' area - just as a lobster's claw clamps together, the shooter's hand clamps or snatches at the last second. This movement causes the front-sight to dip low and to the right, pushing the shots to the 3:30 to 5 o'clock zone.

SHOTS directly below the point of aim: The shot string in the 5 o'clock to 6:30 area is caused when the shooter 'breaks' the wrist - another form of anticipation. The shooter expects the handgun to recoil at a known instant and tries to fight or control this anticipated recoil by cocking the wrist downward. The shooter may subconsciously believe that the recoil can be lessened by holding the wrist down. This shot group can also be caused by a shooter who relaxes too soon.

SHOTS everywhere - No distinct pattern: A peppered target is often produced by a beginning shooter. A new shooter usually does not consistently repeat one particular error, but instead commits many different errors. The result is a target with shots scattered in many places. Such a target may be caused by the shooter's inconsistency, including changing the grip between shots, focusing on the target instead of the front-sight on some shots, failing to align the sights properly and so on.
Shoot Straight and Be Safe."
 

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