Did the Royal Navy conduct a full test of the intended 18-inch/45 gun?
Short answerThe surviving evidence located so far does not document the full test, but the guns' installation and firing tables strongly imply that testing occurred.
NotesResearch carried out with another historian can trace contemporary turret orders and many gun tests, yet the corresponding full-test record for this 18-inch weapon has not been found. That absence is not treated as proof that no test occurred. The guns were installed in HMS Furious and firing tables existed, evidence that strongly implies testing before shipboard use. The answer remains provisional until a direct test record or equivalent archival evidence is located.