Method of improving the accuracy of rifle ammunition
OwnerDaniel David Pearlsoninventor
Life of this patent
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Abstract
A method of supplying a rifle with cartridges includes providing classes within a group of cartridges. The classes are classified by specific and precisely graduated increments of propellant load contained in the cartridges, or by formulation of propellant, of each class relative to the cartridges of each other class. The user can test fire a rifle with multiple classes of the group and record the accuracy of the firing. A class of the group can be then chosen for a particular rifle based on accuracy of the rifle in the test firing.
Claims19
A method of providing ammunition cartridges for use in a rifle to enable the identification and selection of the most accurate propellant load weight for the rifle, comprising the steps of:
- providing a first kit comprising multiple cartridges, wherein at least some of the multiple cartridges are differentiated by propellant load weight, and wherein the value of differentiation of propellant load weight between cartridges is a number of grains selected from the range of 0.1 grains to 0.5 grains;
- and
- wherein each cartridge has a different target propellant load weight, and is manufactured by means of an automated granule portioning system comprising:
- a volumetric assembly comprising a top plate, a bottom plate, and a telescopic chamber engaged with the top plate and the bottom plate, the telescopic chamber comprising a plurality of chamber tubes, wherein the volume of the telescopic chamber is adjustably based upon the position of the top plate relative to the bottom plate, and the position of the top plate relative to the bottom plate is adjustable by a gear mechanism, the volumetric assembly being arranged to receive a portion of propellant granules into the telescopic chamber to fill the volume of the telescopic chamber;
- a weighing device, the weighing device being capable of weighing the portion of propellant granules received in the telescopic chamber, and comparing the weight of the portion of granules to a target propellant load weight corresponding with the cartridge;
- and
- a motor, wherein the motor is capable of rotating the gear mechanism to adjust the volume of the telescopic chamber after the weighing device determines that the granule weight of the portion of granules is different than the target propellant load weight corresponding with the cartridge.
A kit of ammunition cartridges for use in a rifle to enable the identification and selection of the most accurate cartridge propellant weight for the rifle, the kit comprising multiple cartridges wherein at least some of the multiple cartridges are differentiated by propellant weight such that the specific impulse imparted by a volume of differentiated propellant modifies the muzzle velocity of the projectile.
A method of supplying a rifle with cartridges, comprising the steps of:
- providing a first plurality of classes within a first group of cartridges, wherein the classes are classified by specific and precisely graduated weighted increments of propellant load contained in the cartridges of each class relative to the cartridges of each other class of the first group of cartridges;
- firing a rifle at a target with the first plurality of classes of cartridges;
- selecting a class of the first group of cartridges with the greatest accuracy in the firing determined by the least amount of random scatter on the target produced by the class of cartridges;
- providing a second plurality of classes within a second group of cartridges, wherein the classes of the second group of cartridges are classified by specific and precisely graduated weighted increments of propellant load contained in the cartridges of each class relative to the cartridges of each other class of the second group of cartridges, and wherein the weighted increments of the second group of cartridges is less than the weighted increments of the first group of cartridges, and further wherein the propellant load of at least one of the second group of cartridges is within the weighted increment of the second group of cartridges from the class selected from the first group of cartridges;
- firing the rifle at the target with the second plurality of classes of cartridges;
- and
- selecting a class of the second group of cartridges with the greatest accuracy in the test firing determined by the least amount of random scatter on the target produced by the class of cartridges.
Dependencies are inferred from the claim text.