Check the extractor pin that latches onto the rim of the shell to pull it out. I just was diagnosing mine and found the tip of it broke right off. It should be a fairly long little arm with a hook on the end attached to the action of the gun.
You have a problem that needs the attention of a gunsmith. Browning's web site can point you in the right direction.
A gun recoils when fired due to the need to eject the casing and to recycle the pent up gas
Extractor/ejector
projectiles
They are shells fired from a gun with a bore of just under 1.5 inches.
This gun is a Rifle
Many types. First, muzzle loaders do not use cartridge casings. Only autoloading firearms automatically eject a fired casing. Revolvers, and lever action, bolt action, and pump action firearms require a specific action by the shooter to eject a fired casing, as do single shot and double barreled shotguns.
Possible causes include, ammunition, magazine, spring,etc..
The Turkish Khan Centurion Shotgun is not designed to eject fired shells, but only extract them. The Turks are a thrifty people and many reload their own shotsells. I have lived among the Turks and gone hunting with them, in particular Wild Boar hunting. The Turkish country people hunt the Wild Boar with their own reloads of buckshot, because the Turkish Government frowns on the sale of buckshot shells or rifle cartridges. The people melt down bird shot and cast buckshot, which they reload. They would not think of eating a pig, ( domuz in Turkish ) but hunt them because of crop damage. A shotgun which ejects and throws the fired hulls all over the place is considered undesirable by the Turks. --- Joe Boyd ---
over 1500
a lot
yes as long as the Remington model 700 sps is chambered for 308 Win.