What is the appropriate sentence for feloniously shooting with intent to murder?

In Rex v. Simpson (1910) 75 J.P. 56, the appeal was against a sentence of twelve years’ penal servitude for feloniously shooting with intent to murder. Application by the prisoner for leave to appeal was granted by Darling, J., expressly on the ground that the sentence was inadequate. The appeal was dismissed and the sentence was increased to fifteen years’ penal servitude, the reason for increasing the sentence being stated by Lord Alverstone, C.J., as follows: We do not consider a sentence of 12 years sufficient for an attempt to murder of this kind. We consider that the least sentence which should be imposed is one of fifteen years.