Patent ID: 11933565
Assignee: nan
Field: Other special machines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A method of improving accuracy of a firearm comprising the steps of:
providing a firearm barrel having a longitudinal axis, including rifling formed of an alternating, spirally-extending plurality of grooves and lands defining a twist angle adapted for imparting rotation to a bullet being impelled through the barrel from a chamber end and exiting a muzzle end;
forming in each of the plurality of lands a reduced width component communicating with the chamber end of the barrel for a predetermined distance towards the muzzle end of the barrel, wherein the reduced width component defines an acute angle in relation to the longitudinal axis of the barrel; and
preventing blow-by gasses from exiting the barrel in advance of the bullet via the reduced width component,
wherein the reduced width component of the lands provides a 5 to 1 groove to land ratio.