Can anyone tell me how to measure top hat?

I am trying to find the “sweet spot” for my 24″ condor .22 and I may have found the start pressure that it likes, but I am open to advice and suggestions from the airforce masters!

This is the best group I shot with my condor. When I lowered my start pressure from 2800 to 2600 psi, my groups improved slightly. I have my powerwheel on 3.5, 2. I am “condor challenged” so I don’t know exactly how to check the tophat adjustment. If anyone can lend a helping hand I would surely appreciate your continuing education of 80 Grit in Condor 101.

I used EJ’s 28.4 @ 20 yards. The second group was as tight as the first, until shot 5 opened up a bit to produce a 1/2″ group.

I don’t have a digital gauge to measure ctc, but group 1 was a 1/4″ if not better.

Next week I will crony at these settings to see what numbers I come up with. Please advise on checking the top hat and I thank you in advance for your assistance.

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