Military Dictionary and Gazetteer
One of the first attempts to make a bullet take the grooves by the expanding action of the powder was by Mr. Greener, an English gunsmith, in 1836. He used a conical pewter wedge, which was driven into a cavity in the base of the bullet by the powder and forced the outer walls of the bullet into the grooves.
The numerical value of greener’s bullet in Chaldean Numerology is: 8
The numerical value of greener’s bullet in Pythagorean Numerology is: 1