.308 Winchester, also known as 308 Win., almost identical to 7.62x51mm NATO, is a centerfire rifle cartridge. .308 Winchester was designed in the United States of America by Winchester (using Frankford Arsenal's designs) in 1952. The 7.62x51mm NATO final design was by Frankford Arsenal in 1954.

Print this for props, display, education, training, just because it's cool, or scale it up to become a container.

Contains 5 files:

- Accurately sized replica: 308Winchester_cartridge.stl

- Separate bullet and case pieces for easily printing in different colors: 308Winchester_bullet.stl and 308Winchester_case.stl

- Snap cap/dummy round for cycle and dry fire practice, with firing pin hole and reduced bullet size: 308Winchester_snapcap.stl

- Information txt file with recommended print settings: 308Winchester_info.txt

Originally uploaded on Thingiverse: https://www.thingiverse.com/thing:6078847 

Print Settings:

- Material: Tested with PLA and PLA+/PLA Pro.

- Overall print size: 71.37mm tall, 12.01mm diameter.

- Layer Height/Quality: 0.16mm or less recommended, 0.12mm works best.

- Infill: 20% is fine for display, 60% or more recommended for snap cap use.

- Print Speed: 50mm/s or less recommended. I do 40mm/s for cartridge, snap cap, and case piece; then 30mm/s for bullet piece. I also do 10mm/s initial layer speed.

- Adhesion: A brim might be needed, depending on the printer and bed type. I have a textured PEI bed, and with proper calibration, additional adhesion isn't needed.

- Post print: The pieces may require some sanding or filing for proper fitment if the bottom layers bulged out a little. Fitment should be a little snug, but easy to take in and out. A properly calibrated setup shouldn't need additional work.