Ballistic Co-efficient (BC)
In ballistics the BC of a body is a measure of it's ability to overcome air resistance in flight.
The tail of the slug or pellet. Common types of bases are
Flat - A horizontal base section
Dish - A concave dish
Cup - Has a more pronounced stepped inlet in the base
Hollow - An eliptical indent
The tip or front of the slug or pellet. Common types of noses are
1/2e - a 1/2 calibre elliptically curved nose (nose is shorter than 3/4e)
3/4e - a 3/4 calibre elliptically curved nose (nose is longer than 1/2e).
Keith - truncated semi-wadcutter style nose (named after the late Elmer Keith)
Conical - a pointed conical nose
Target Wadcutter - a flat nose that is grooved
Predominantly a diabolo shaped design that is aerodynamically poor and relies on drag stabilisation to maintain accuracy.
In ballistics is a pointed curved surface used to form the streamlined nose of the projectile.
A solid cylindro-conoidally shape design that has greater contact area with the barrel bore.
Is when a piece of metal is transformed into a desired shape through pressure or hammering