Springbank 100 Proof matured for 5 years in bourbon casks and was bottled at 100 proof, the equivalent of 57.1% vol. As with its siblings, the malt was gently smoked in the kilns of the Campbeltown distillery and distilled two and a half times. Springbank is one of the last three remaining distilleries in Campbeltown, out of a former total of 34.