Progressive Press
A reloading press that performs several operations per handle stroke across multiple stations, producing a finished round on each pull at high volume.
A progressive press is the high-output end of the reloading-press family, built around a shell plate that indexes several cartridge cases through a row of stations at once. On each pull of the handle every station does its job simultaneously, so one case is sized while another is primed, another is charged with powder, and another has a bullet seated. Once the cycle is full, a completed round drops out with every stroke.
That throughput is why high-volume shooters favor progressives for pistol and gas-gun ammunition where hundreds of rounds per session are common. The tradeoff against a single-stage or turret-press is complexity: more moving parts, more setup, and several reloading-dies all running at once means a problem at one station is harder to catch. For that reason many precision reloading handloaders still load match rifle ammunition more slowly and deliberately on simpler presses.