Oct 21, 2010 #3 JD338 Range Officer Staff member Nov 4, 2004 25,563 9,661 boolit Welcome to the forum. The BT is a cup and core bullet with a solid boat tail base. They are designed for impact velocities of 3000 fps down to 1800 fps. The AB is of similar construction but has a heavier jacket and a bonded lead core for more retained weight and deeper penetration. JD338
boolit Welcome to the forum. The BT is a cup and core bullet with a solid boat tail base. They are designed for impact velocities of 3000 fps down to 1800 fps. The AB is of similar construction but has a heavier jacket and a bonded lead core for more retained weight and deeper penetration. JD338