Firearm Cartridge

Abstract

A firearm cartridge system is provided and includes a case with a neck portion, body portion, shoulder portion, a base portion, and a indentation. The neck portion has a diameter between about 0.249 in to about 0.256 in. The body portion tapers from a first end having a diameter between about 0.465 in to about 0.475 to a second end having a diameter between about 0.449 in to about 0.458 in. The shoulder portion connects the body portion and neck portion and has a diameter between about 0.395 in to about 0.405 in. The base portion is positioned on the second end of the body portion and has diameter between about 0.463 in to about 0.477 in. The indentation joins the body portion and the base portion and includes a sidewall with angle between 30° to 42°.

What is claimed is: 
     
         1 . A firearm cartridge system comprising:
 a case having:
 a neck portion diameter between about 0.249 in to about 0.256 in; 
 a body portion tapering from a first end having a diameter between about 0.465 in to about 0.475 to a second end having a diameter between about 0.449 in to about 0.458 in; 
 a shoulder portion connecting the body portion and neck portion and having a diameter between about 0.395 in to about 0.405 in; 
 a base portion positioned on the second end of the body portion and having diameter between about 0.463 in to about 0.477 in; and 
 an indentation joining the body portion and the base portion, the indentation having sidewall with angle between 30° to 42°. 
   
     
     
         2 . The firearm cartridge system of  claim 1 , wherein the case has a length between about 2.2542 in to about 2.3228 in. 
     
     
         3 . The firearm cartridge system of  claim 2 , wherein the case has a length between about 2.2656 in to about 2.3114 in. 
     
     
         4 . The firearm cartridge system of  claim 3 , wherein the case has a length between about 2.2771 in to about 2.2999 in. 
     
     
         5 . The firearm cartridge system of  claim 4 , wherein the case has a length of about 2.2885 in. 
     
     
         6 . The firearm cartridge system of  claim 5 , wherein the neck portion has a diameter between about 0.2505 in to about 0.2555 in. 
     
     
         7 . The firearm cartridge system of  claim 6 , wherein the neck portion has a diameter between about 0.2517 in to about 0.2543 in. 
     
     
         8 . The firearm cartridge system of  claim 7 , wherein the neck portion has a diameter of about 0.253 in. 
     
     
         9 . The firearm cartridge system of  claim 8 , wherein the first end has a diameter between about 0.4632 in to about 0.4774 in. 
     
     
         10 . The firearm cartridge system of  claim 9 , wherein the first end has a diameter between about 0.4679 in to 0.4727 in. 
     
     
         11 . The firearm cartridge system of  claim 10 , wherein the first end has a diameter of about 0.4703 in. 
     
     
         12 . The firearm cartridge system of  claim 11 , wherein the second end has diameter between about 0.4472 in to about 0.4608 in. 
     
     
         13 . The firearm cartridge system of  claim 12 , wherein the second end has a diameter between about 0.4517 in to about 0.4563 in. 
     
     
         14 . The firearm cartridge system of  claim 13 , wherein the second end has a diameter of about 0.4540 in. 
     
     
         15 . The firearm cartridge system of  claim 14 , wherein the shoulder portion has a diameter between about 0.396 in to about 0.404 in. 
     
     
         16 . The firearm cartridge system of  claim 15 , wherein the shoulder portion has a diameter between about 0.398 in to about 0.402 in. 
     
     
         17 . The firearm cartridge system of  claim 16 , wherein the shoulder portion has a diameter about 0.400 in. 
     
     
         18 . The firearm cartridge system of  claim 16 , wherein the base portion has a diameter between about 0.4656 in to about 0.475 in. 
     
     
         19 . The firearm cartridge system of  claim 17 , wherein the base portion has a diameter between about 0.4679 in to about 0.4727 in. 
     
     
         20 . The firearm cartridge system of  claim 18 , wherein the base portion has a diameter about 0.4703 in. 
     
     
         21 . The firearm cartridge system of  claim 19 , wherein the indentation can have a angling between about 33° to 37° measured from the longitudinal axis of the body portion. 
     
     
         22 . The firearm cartridge system of  claim 20 , wherein the indentation can have an angle of about 36° measured from the longitudinal axis of the body portion. 
     
     
         23 . A firearm ammunition comprising:
 a case having:
 a neck portion diameter between about 0.249 in to about 0.256 in; 
 a body portion tapering from a first end having a diameter between about 0.465 in to about 0.475 to a second end having a diameter between about 0.449 in to about 0.458 in; 
 a shoulder portion connecting the body portion and neck portion and having a diameter between about 0.395 in to about 0.405 in; 
 a base portion positioned on the second end of the body portion and having diameter between about 0.463 in to about 0.477 in; and 
 an indentation joining the body portion and the base portion, the indentation having sidewall with angle between 30° to 42°; 
   a powder positioned in the body portion and having a grain weight between about 35 grain to about 60 grain; and   a bullet firm fit in the neck portion and having a diameter between about 0.221 in to about 0.227 in.   
     
     
         24 . The firearm ammunition of  claim 22 , wherein the maximum average pressure for the ammunition can be about 62,000 pound per square inch. 
     
     
         25 . The firearm ammunition of  claim 23 , wherein the bullet can have a weight between about 55 grain to about 110 grain. 
     
     
         26 . The firearm ammunition of  claim 26 , wherein the bullet has a diameter of about 0.2245 in.