The other issues with any drift has always been the OD. Was it originally manufactured to the correct OD and within the tolerance specification. Without checking I think the tolerance was plus 0.005”.
Do you have a certificate?
is the drift serial numbered ?
Do you have a certificate of test OD measurement of the drift within the last 6 months or preferably before the start of your drift inspection?
Another issue is temperature! I had this argument in the early ‘70’s. We had tested a selection of casing, pups, tools to be made up for a completion, all passed. We had used a tested and recorded drift.
The completion company called the customer to complain they did not drift. Outcome was that their drift had sat outside in the sun all day and had grown in size, outwith specification.
So all round, as others have advised, a number of things to consider, write down in detail in a specification to be used by all. This is from when the tubing is manufactured or as part of a purchase specification.