Understanding Bullet Calibers by SB Luwang is a comprehensive reference for readers who want to understand the confusing world of metric ammunition and cartridge terminology.
What does 7.62×39 mm actually mean? Why are 7.62×39 mm, 7.62×51 mm and 7.62×54R different cartridges? Is every “9 mm” cartridge the same? How are 5.56 mm, 6.5 mm, 8 mm, 10 mm and 12.7 mm designations interpreted?
This book explains these questions in straightforward language while combining cartridge history, technical terminology, identification and lawful sporting context.
Inside the book you will discover:
- The difference between a bullet, cartridge, caliber and chamber
- How metric cartridge names such as 5.56×45 mm, 7.62×39 mm and 9×19 mm are structured
- Why similar bullet diameters do not automatically mean cartridge compatibility
- Major 5 mm, 6 mm, 6.5 mm, 6.8 mm, 7 mm, 7.62 mm, 8 mm, 9 mm, 10 mm and larger cartridge families
- Important historical military and sporting cartridges
- Modern precision and competition cartridge families
- Rimmed, rimless, semi-rimmed and rebated-rim case terminology
- Straight-wall, tapered and bottleneck cartridge designs
- Rimfire versus centerfire ammunition
- Cartridge headstamps and packaging identification
- Metric and imperial naming relationships
- SAAMI and C.I.P. standards explained
- European sporting-cartridge terminology
- Historical military cartridge development
- Cartridge collecting, cataloguing and preservation
- Common caliber myths and naming mistakes
- Quick-reference tables and comparison guides
- A comprehensive ammunition terminology glossary





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