Sorry chaps, surely you are making a bit of a meal of this?
The momentary application of 7g is not a problem for an unprotected pilot. Problems from g only arise when it is maintained.
Historically (before we even fitted g meters to RAF aircraft) it was not uncommon for an ignorant snatch to damage an aircraft without the pilot realising he had overdone things because he did not 'grey out' let alone 'black out'.
Mind you with today's risk assessments and health and safety issues I am sure human physiology has changed resulting in the need for meetings, equipment,training, money and godness knows what else to go above 4.
JF