Vertical stringing

Onagoth

Onagoth

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Had some test loads come out like this....not sure if its worth pursuing, but was wondering if vertical stringing can be caused by sight alignment just as easily?

 
move on from that load, don't waste time on it, if other loads do similar, pick the best and work on the gun. Try loads nowhere near max, basic softpoints. Wait 5 minutes between shots.
 
What causes vertical stringing?
60,000psi and Newtons third law

Keep working on the load until the bullet leaves the barrel at the same point of barrel motion, right now you have "bad vibes" and you need to tune your load.



It could also be caused by mixed brass and uneven chamber pressures or a multitude of other reasons.

What bullet and powder are you usings?
 
OP, you have two definite groups there. That is a sign of something other than your load.

You have mechanical issues.

First off, torque the screws properly. Then, check the barrel channel for clearance.

It looks like the problem increases with heat of the barrel.

One thing, it can't be to bad, because the rifle developed a definite group after a secondary point was reached.

This can also be caused by oil in the receiver bedding. The oil allows the receiver to move backwards after each shot, until it comes to rest against the recoil lug. Then, the screw tension is no longer at a 90 degree angle to the receiver. Not by much but it doesn't take much.

Your rifle needs some tweaking. Nothing serious. Tighten all of the scope base screws, clean up the receiver area, maybe, open the barrel channel and if it continues, a skim coat of glass bedding to get everything properly stabilized and aligned.

If none of this works, then it's time to try another scope.
 
bearhunter said:
OP, you have two definite groups there. That is a sign of something other than your load.

You have mechanical issues.

First off, torque the screws properly. Then, check the barrel channel for clearance.

It looks like the problem increases with heat of the barrel.

One thing, it can't be to bad, because the rifle developed a definite group after a secondary point was reached.

This can also be caused by oil in the receiver bedding. The oil allows the receiver to move backwards after each shot, until it comes to rest against the recoil lug. Then, the screw tension is no longer at a 90 degree angle to the receiver. Not by much but it doesn't take much.

Your rifle needs some tweaking. Nothing serious. Tighten all of the scope base screws, clean up the receiver area, maybe, open the barrel channel and if it continues, a skim coat of glass bedding to get everything properly stabilized and aligned.

If none of this works, then it's time to try another scope.
Click to expand...

This is an ar ....so I'm not sure its a problem with the receiver bedding
 
2786, 2822, 2774, 2816, 2807

I've read these bullet perform best at 2900 ft per sec....but my load with 25.3 grains sucked
 
I would assume you are shooting this gun with a front and rear bag using proper bench shooting technique?
If not , all is for not, because you will not be able to isolate the problem to the load itself, it could very well be butt stock placement, or even focus.
Cat
 
I stopped using a lead sled as all of my rifles vertically string in them. I will use it to help zero a heavy recoil rifle but when it comes time to shoot for groups I switch to sand bags. I just haven't managed to figure out how to shoot well off of one yet.
 
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