| 7-30 Waters | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Type | Rifle and single shot handgun | |||||||||||||||
| Place of origin | United States | |||||||||||||||
| Production history | ||||||||||||||||
| Designer | Ken Waters | |||||||||||||||
| Designed | 1976 | |||||||||||||||
| Produced | 1984–present | |||||||||||||||
| Specifications | ||||||||||||||||
| Parent case | .30-30 Winchester | |||||||||||||||
| Case type | Rimmed, bottleneck | |||||||||||||||
| Bullet diameter | .284 in (7.2 mm)[1] | |||||||||||||||
| Land diameter | .277 in (7.0 mm)[1] | |||||||||||||||
| Neck diameter | .306 in (7.8 mm) | |||||||||||||||
| Base diameter | .422 in (10.7 mm) | |||||||||||||||
| Rim diameter | .506 in (12.9 mm) | |||||||||||||||
| Rim thickness | .058 in (1.5 mm) | |||||||||||||||
| Case length | 2.04 in (52 mm) | |||||||||||||||
| Overall length | 2.52 in (64 mm) | |||||||||||||||
| Primer type | Large rifle | |||||||||||||||
| Maximum pressure | 45,000 psi (310 MPa) | |||||||||||||||
| Maximum CUP | 40,000 CUP | |||||||||||||||
| Ballistic performance | ||||||||||||||||
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| Test barrel length: 24" Source(s): Cartridges of the World, 10th Ed., Barnes | ||||||||||||||||
The 7-30 Waters cartridge was originally a wildcat cartridge developed by author Ken Waters in 1976 to give better performance to lever-action rifle shooters than the parent .30-30 Winchester cartridge, by providing a higher velocity and flatter trajectory with a smaller, lighter bullet. By 1984, Winchester introduced a Model 94 rifle chambered for the 7-30 Waters, establishing it as a commercial cartridge. In 1986, Thompson/Center began chambering 10-inch, 14-inch, and 20-inch Contender barrels for the cartridge.[2]
- ^ a b "C.I.P. TDCC datasheet 7-30 Waters" (PDF). CIP. Archived from the original (PDF) on 2023-04-30.
- ^ Frank C. Barnes, ed. Stan Skinner (2003). Cartridges of the World, 10th Ed. Krause Publications. ISBN 0-87349-605-1.