The OTO Melara 127/64 is the preferred 5-inch option in this comparison. Canada's River-class ships are cited as customers for the system. The maximum range quoted for Vulcano ammunition is 120 kilometres, approximately 75 miles. That range is associated with the specified ammunition rather than presented as the performance of every round the gun can fire.
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The OTO Melara 127/64 and Vulcano ammunition
The Italian 127/64 system is praised for its ammunition options, with a quoted Vulcano range of 120 kilometres.