From Surf Wiki (app.surf) — the open knowledge base
7mm Shooting Times Westerner
Wildcat rifle cartridge
Wildcat rifle cartridge
| Field | Value |
|---|---|
| name | 7mm Shooting Times Westerner |
| image | 7mm STW.jpg |
| image_size | 200px |
| caption | Left to right: [.308 Winchester](308-winchester), [7mm Remington Magnum](7mm-remington-magnum) and 7mm Shooting Times Westerner |
| origin | United States |
| type | Rifle |
| designer | Layne Simpson |
| design_date | 1979 |
| production_date | 1989-Present |
| parent | [8mm Remington Magnum](8mm-remington-magnum) |
| case_type | Belted, bottleneck |
| bullet | .284 |
| neck | .315 |
| shoulder | .4868 |
| base | .5126 |
| rim_dia | .532 |
| rim_thick | .220 |
| case_length | 2.850 |
| length | 3.60 |
| case_capacity | 93.3 gr of H2O |
| rifling | 1 in 9 in (229 mm) |
| primer | Large rifle magnum |
| max_pressure | 65000 |
| pressure_method | SAAMI |
| bw1 | 120 |
| btype1 | X |
| vel1 | 3384 |
| en1 | 3052 |
| bw2 | 140 |
| btype2 | X |
| vel2 | 3268 |
| en2 | 3321 |
| bw3 | 150 |
| btype3 | BT |
| vel3 | 3233 |
| en3 | 3482 |
| bw4 | 160 |
| btype4 | Partition |
| vel4 | 3177 |
| en4 | 3587 |
| bw5 | 175 |
| btype5 | PSPCL |
| vel5 | 3047 |
| en5 | 3609 |
| test_barrel_length | 26" |
| balsrc | Accurate Powder |
The 7mm Shooting Times Westerner, sometimes referred to as the 7mm STW, began as a wildcat rifle cartridge developed by Layne Simpson, Field Editor of Shooting Times, in 1979. It is an 8mm Remington Magnum case that has been "necked down" (narrowing the case opening) by 1 mm to accept 7 mm (.284 in) bullets.
Background
The first major company to produce the 7mm STW was A-Square in 1994. The 7mm STW graduated to commercial status when it was officially recognized by SAAMI in 1996, and the Remington Arms Company started to produce it in 1997, with other ammunition manufacturers following. As of 2019, Federal Premium Ammunition is the only major manufacturer to still offer it on a regular basis, but smaller manufacturers also provide loaded ammunition.
References
References
- Max chamber pressure - saami specs. Return to the index to LASC. (n.d.). Retrieved May 1, 2023, from http://www.lasc.us/SAAMIMaxPressure.htm
- "[http://www.accuratepowder.com/data/PerCaliber2Guide/Rifle/Standarddata(Rifle)/284Cal(7.21mm)/7mm%20STW%20page%20251.pdf 7 mm STW data]" from Accurate Powder
- "7mm STW".
- "7mm Shooting Times Westerner".
- Association, National Rifle. "An Official Journal Of The NRA | An Ode to the 7mm STW".
- Hawks, Chuck. "The 7mm STW".
- Simpson, Layne. (January 4, 2011). "The 7mm STW Story".
- Simpson, Layne. (2019-01-28). "The 7mm STW - Still Holding Its Own".
This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.
Ask Mako anything about 7mm Shooting Times Westerner — get instant answers, deeper analysis, and related topics.
Research with MakoFree with your Surf account
Create a free account to save articles, ask Mako questions, and organize your research.
Sign up freeThis content may have been generated or modified by AI. CloudSurf Software LLC is not responsible for the accuracy, completeness, or reliability of AI-generated content. Always verify important information from primary sources.
Report