Piston

7 After shot leaves barrel, a small amount of propellant gases is metered from barrel to piston assembly through two gas ports. Initial recoil of gun causes piston to be displaced toward muzzle due to piston inertia. This displacement restricts amount of gas metered to piston chamber. Amount of restriction is proportional to recoil and therefore to load being fired. Energy or rearward push applied to piston is thus controlled within practical limits, and the user does not have to make adjustments for light or heavy loads.

Breechbolt is linked to piston by action bar. Rearward push of piston causes breechbolt to unlock and open action. After breech is opened, energy to close action is stored in compressed action spring. ■

:y JOHN F. FINNEGAN

Hunting Mastery Selected Tips

Hunting Mastery Selected Tips

Deer hunting is an interesting thing that reminds you of those golden old ages of 19th centuries, where a handsome hunk well equipped with all hunting material rides on horse searching for his target animal either for the purpose of displaying his masculine powers or for enticing and wooing his lady love.

Get My Free Ebook


Post a comment