Steve got your mail and tried to reply.
Something would not let me send the reply to you so I'm gonna try this.
>Steve
First of all I'm not familiar with the ARMS mount. I use the Springfield third generation mount.
With the Sprinfield mount you remove the factory stripper clip guid block and replace it with one that came with the mount.
This replacement guide has a tapped hole in the left hand side.
In the mount there is a lock screw and nut that the rear mounting knob goes through and screws into the strip guide.
My problem was a result of not having the lock screw tight enough.
I put my rifle on it's bi-pod and sand bagged the stock and sighted through the iron sights at a marker on a fire hydrant
150 yards out. I then sighted through the scope sure enough the vertical crosshair was way left.
I then removed the rear mounting knob loosened the lock nut and screwed the lock screw in as I did this it pulled the centerline right. When I had the scope and the iron sights in the same place I locked the nut down and put the mounting knob back on. Later that day I went to the range and it took about five rounds to zero.
It has not shifted zero since.
This is how I solved my particular problem.
I'm no expert by any means and I don't profess to be. I read all the boards on the net and gather as much info as possible.
If this can help you in any way I'm happy to help.
If there is anything else I can do to help please feel free to ask.
Best Regards and good luck.
Something would not let me send the reply to you so I'm gonna try this.
>Steve
First of all I'm not familiar with the ARMS mount. I use the Springfield third generation mount.
With the Sprinfield mount you remove the factory stripper clip guid block and replace it with one that came with the mount.
This replacement guide has a tapped hole in the left hand side.
In the mount there is a lock screw and nut that the rear mounting knob goes through and screws into the strip guide.
My problem was a result of not having the lock screw tight enough.
I put my rifle on it's bi-pod and sand bagged the stock and sighted through the iron sights at a marker on a fire hydrant
150 yards out. I then sighted through the scope sure enough the vertical crosshair was way left.
I then removed the rear mounting knob loosened the lock nut and screwed the lock screw in as I did this it pulled the centerline right. When I had the scope and the iron sights in the same place I locked the nut down and put the mounting knob back on. Later that day I went to the range and it took about five rounds to zero.
It has not shifted zero since.
This is how I solved my particular problem.
I'm no expert by any means and I don't profess to be. I read all the boards on the net and gather as much info as possible.
If this can help you in any way I'm happy to help.
If there is anything else I can do to help please feel free to ask.
Best Regards and good luck.