Cartridge case and projectile

A cartridge case and projectile combination comprising;

• a cartridge case to receive a projectile having a rebated rim of a 0.535″ diameter, a body length from a web to a shoulder of 0.7003″, a case shoulder angle of 42°, a longitudinal distance between said shoulder and neck of 0.1557″, a case neck length of 0.229″, a mouth at an end of said neck, whereby the total cartridge case has a total case length of 1.285″;
• a projectile that does extend beyond 0.315″ of said cartridge case;
• said projectile includes a W2C core;
• said core is partially covered by an outside layer of a different material to form a jacket;
• said core includes a section with a barb between a front and a rear of said core and wherein said outside layer covers said rear of said core to said barb;
• said barb establishes a junction area of said core and said outside layer;
• wherein said outside layer continues from said junction area to a back end and base of said core with a thickness of 0.020″ of material all around said core;
• wherein said core has a diameter of 0.1660 at said barb;
• wherein at a base of said barb 44 said core has a diameter that increases from 0.126″ to 0.1845″ over a distance of 0.0825″ from said base;
• wherein said outside layer fills in said junction area blending with said barb to maintain a 19.61° angle;
• wherein said core and said outside layer have a diameter of 0.2245″ at 0.0315″ from said tip of said core;
• wherein at 0.315″ from said tip of said core a main body of said core flattens to a constant diameter of 0.1845″ for a length of 0.229″;
• wherein said outside layer over said core 38 maintains an 0.2245″ overall diameter of said projectile;
• and wherein said core transitions from said main body to a two-angled boattail.