of Swage
Source: Webster's dictionaryNonte, chapter 10, "Lead Bullet Loads for Rifles" Such cast lead bullets, intended for use with a gas check, will have a reduced diameter at the rear of the cast lead bullet, onto which the gas check can be swaged using a lubricating/resizing press. Source: Internet
In a hydraulic press, bullets from powdered metal can be swaged. Source: Internet
Since the jacket provides the strength, soft lead can be used, which allows bullets to be swaged or cast into shape before plating. Source: Internet