breechloading [breech-loh-ding] EXAMPLES|WORD ORIGIN adjective loaded at the breech. Liberaldictionary.com
Origin of breechloading First recorded in 1855–60; breech + loading Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019 Examples from the Web for breechloading Historical Examples of breechloading
Curiously enough the earliest cannon seem to have been breechloading.
H. B. (Hereford Brooke) George