375 Ruger Guide Gun Issues

[LSTIEN458]

Working on sighting in my new Ruger guide gun in 375 Ruger for an upcoming hunt. I mounted my vx2 Leupold that has always been a go to for me when it comes to hunting. I am having trouble getting the scope to zero, I have run out of windage adjustment. The rifle shot a little low and 22” to the left on the first shot after the third shot and all the windage adjustment it had, 25 minutes, it is still shooting 3.5” left. I am going to take the scope off and remount and see if the impact changes. The scope seems to be tracking correctly. Any advice or has anyone had similar issues? Thank you

 

[375 Ruger Fan]

I would suggest starting completely over with bore sighting. Re-center the reticle and then bore sight. Are you using Ruger rings?

 

[LSTIEN458]

Yes using Ruger factory rings

 

[LSTIEN458]

I would suggest starting completely over with bore sighting. Re-center the reticle and then bore sight. Are you using Ruger rings?

Any suggestions when using the Ruger rings?

 

[pilar]

Mine was having same problem with some tally bases and rings, called CS and they rushed out a new set, but it didn’t cure the elevation problem entirely
Final solution required making some shims for under the base
I had to WAG my way through it, using old tricks I picked up over the years
Good luck

 

[Papa72]

After indexing each ring in it’s slot, keep forward pressure (toward muzzle) on the ring while finger tightening the mounting screw. Ruger says mounting screw should then be torqued to 30 in-lbs. I just mounted a Vari-X 3iii 1.5-5 on my new 416 Ruger Guide Gun with Ruger rings and it laser bore sighted spot on.

 

[LSTIEN458]

Mine was having same problem with some tally bases and rings, called CS and they rushed out a new set, but it didn’t cure the elevation problem entirely
Final solution required making some shims for under the base
I had to WAG my way through it, using old tricks I picked up over the years
Good luck

Thank you for the info just trying to get some good ideas on what to try these 375 rounds are hard to come by

 

[LSTIEN458]

After indexing each ring in it’s slot, keep forward pressure (toward muzzle) on the ring while finger tightening the mounting screw. Ruger says mounting screw should then be torqued to 30 in-lbs. I just mounted a Vari-X 3iii 1.5-5 on my new 416 Ruger Guide Gun with Ruger rings and it laser bore sighted spot on.

Did you have the scope loose in the rings when you tightened the bases?

 

[Papa72]

No. Install both lower ring halves on the base first, then set the scope, and then add the top ring halves.

 

[Papa72]

Ruger warns that the ring caps should not be switched between the ring sets. If you think the caps might have been switched, then it’s possible that would cause your windage issue.

 

[cajunchefray]

Did you have the scope loose in the rings when you tightened the bases?

Yes, with Ruger rings, I always have the scope slightly loose in the rings, then properly tighten the base screw, then, align the scope reticle and eye relief.
Next, tighten the rings, alternating front back, left and right.
with these steps, I find it does not put torsion pressure on the scope.

This is the method my gunsmith uses.

Also, check the scope on a rifle that is consistent in placing bullets on target. Check that windage and elevation moves the bullet impact point correctly.
I've had a recent manufacture Leupold VX3i start throwing shots 6" left at 50 yards on an accurate Ruger #1 35 Whelen.

 

[Ontario Hunter]

I had to shim the front of 1-piece base on my Springfield 03A3. I used a piece of plastic cut from a black Peters shotgun shell. Nicely curved to fit on receiver and easy to work with. Cut it to fit the bottom of base, marked the screw holes, and used a heated screw to punch the holes in plastic. Hasn't moved and gave me what I needed to avoid runout on elevation turret. Use caution if thinking about aluminum shims. The galvanizing reaction caused by steel contacting aluminum could damage the receiver.

 

[LSTIEN458]

Ruger warns that the ring caps should not be switched between the ring sets. If you think the caps might have been switched, then it’s possible that would cause your windage issue.

I know that I didn’t do that