- noting or pertaining to ammunition of smaller caliber than the gun in which it is used.
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for subcaliber
Historical Examples of subcaliber
But he saw that Sydenham was no target for him, save in a sort of subcaliber practice.
Companies which cannot have subcaliber practice at home station have only one-half the annual subcaliber allowance.