Shotgun Slugs: Smoothbore vs. Rifled Barrel.
https://www.youtube.com/watch?v=8p_0LIx2LHI&list=TLPQMDUxMDIwMjNIkIIE5P19UQ&index=4
https://www.youtube.com/watch?v=8p_0LIx2LHI&list=TLPQMDUxMDIwMjNIkIIE5P19UQ&index=4
Shotgun Slugs: Smoothbore vs. Rifled Barrel.
https://www.youtube.com/watch?v=8p_0LIx2LHI&list=TLPQMDUxMDIwMjNIkIIE5P19UQ&index=4