I'm not sure if this is the right place to post this, but I want to let people know about my experience with the Bushnell laser bore sighter.
The problem I have is that the sight-in process is NOT repeatable. Here are the steps I went through.
1. Scope mounted and tightned –– it is not moving.
2. Insert laser bore sighter and shine on wall at 30 yards. I used the instructions and made sure that the adapter was snug in the barrel.
3. Adjust scope so that cross hairs are centered on the red dot.
4. Remove bore sighter and put it back in as above.
5. Check the scope and the dot is 6" right and 3" low of the cross hairs. I did NOT touch the scope adjustment.
6. Remove the laser and repeat one more time. Now the dot is 2" high and 1" left of the cross hairs.
I repeated this test using two other guns with different calibers with similar behavior. I did NOT turn off the laser in between tests or guns. I suspect that the adapters do not engage the rifling the same way each time which throws off the centering just a little. At 30 yards it makes a very noticable difference.
Even with this variability it's good enough to get me on paper at 25 or 50 yards, but it's frustrating to have a tool I don't trust.
Has anyone done a similar test with this bore sighter or the ones that go into the chamber?