rammer

noun

1. A device used to ram; a ramrod.

   “Now use your rammer to pack it tightly into the barrel.”

   “A "mooner," fond of staring into shop windows, or watching the labourers pulling up the pavement to inspect the gas-pipes, or listening stolidly to the dull "pech" of the paviour's rammer on the flags.”

   “[…] I put my waterproof over the muzzle of one gun, and made a sort of wigwam with two or three rammers that I found, and lay along the tail of another gun […]”

   “The great guns ranged along the deck — each bound fast by its new breechings — with their linstocks and sponges and ladles and rammers, made no idle show of warlike strength.”

2. One who, or that, rams.

   “the Zeppelin Rammer”

   “The loader […] placed the cartridge in the muzzle and shoved it in as far as he could. The rammer rammed it home, the gun captain inserting his priming wire to make sure.”