Tucker301,
Thanks for the fast reply I hope the info paints a nice picture of the situation
1.a Are you using the factory base or another base? Factory
1.b. If factory base, did you mount it in the right direction, with the arrow pointing forward? YES
2. What is the distance between the bottom of the OBJ end of the scope (big end) and the barrel? About 9/16 of an inch (I know that’s a little high but it feels right)
3. How much cooling time are you allowing between shots and groups? About 1 minute for shots and 3-5 for groups of 4 shots
4. What make and model rings are you using? Burris Xtreme Tactical 30mm Medium 1/2
5. Did you torque the base and rings to specs? 20 in/lbs for upper ring and side nut about 80 in/lbs (my torque stops at 70)
6. Did you remove the forearm and barrel assembly between groups? NO
7. Did you check the forearm nut for proper torque? NO but it was tight
8. How experienced are you with rifles? Novice to Intermediate
Also I was shooting at my local range which has a 100 yard indoor range with very study bench and a Caldwell steady rest for sighting. I was also in the seated position (I don’t believe the situation could get much better for sighting in a rifle).
I put a little more thought into it. Could it be with the 180 grain that the sight rest was to hard and pushing the barrel up, along with a hotter then normal barrel?