Centrifugal casting offered a route to a more uniform barrel as metallurgy, alloy control, and production methods advanced. A longer barrel could use more of a charge's energy and extend range, yet it could also demand more propellant and suffer heavier wear. Nations and manufacturers adopted built-up, wire-wound, and monobloc construction at different rates, and many experimented with more than one method. The same casting knowledge could also affect engine pistons and other machinery, illustrating how an industrial technique developed for one purpose could create wider technical spin-offs. Designers had to select the combination of material, charge, length, and service life that suited the ship's purpose.
Notable Point · 25:30-29:14
Monobloc casting and barrel life set limits on range
Better casting and steel purity made monobloc barrels possible, but longer barrels and stronger charges still imposed wear and replacement trade-offs.