Thanks for sharing the bore spec - that helps. I looked all over the net and could not find the bore diameter spec. I kept looking at the digital caliper telling myself that can't be right. I have also been shooting the test loads in my Montrefelto as a control and found the ITX patterns better with more open chokes. I saw a major difference when I went from the IM tube to the M tube. It is possible it could be a gunsmith issue as well. As I was also surprised to see the gun printed slightly low. I think I will have the chokes opened up slightly and see what happens. Maybe tubes is the way to go.
