Yes.
Go to Remington.com and request a manaual.
Recommend you ask a gunsmith for assistance.
The Slavia 622 is a .22 caliber pellet rifle not a .177 caliber rifle. It is a single shot Break barrel rifle. The rifle is a spring piston shooting system. To load and cock the barrel you simply push the barrel down (Break the barrel) all the way until you feel it cock. Load a .22 caliber pellet into the rear of the barrel (Breech) and make sure it's snug flush with the barrel. Load it with the skirt facing out and the dome in the barrel. Then bring the barrel back up into position and let it snap into place. AIM FIRE!
This type of rifle is known as a Break Barrel Cocking rifle. It's not a BB gun it's a Pellet Rifle that fires .177 caliber pellets. It was made between 1971 - 1974. It was made in Scotland by the Milbro Brothers and sold under the Daisy Brand name. To "load and cock" the rifle. With your right hand hold the rifle by the grip right behind the trigger. (KEEP you finger OFF the trigger) With your left hand grab the very end of the barrel and yank down on it. It will break open the barrel at the breech. Pull it all the way down (Like you are folding it in half,) until you feel it cock with a click. Load the Pellet into the open breech (rear of the open barrel) then pull the barrel back up into the firing position. you are now ready to shoot. If you have a safety, put in on Fire.
Shiloh Sharps caliber 45-110. Nice rifle, huh?
The "parent" cartridge was the .250 Savage, necked down to .22 caliber.
Take it to a gunsmith.
Try Browning.
How Do you breakdown sears model 5Caliber 22 s.l. or lr sears
Take it to a gunsmith and ask for help.
The Crosman 120 is a rifle not a gun. It is a break barrel. Cock the barrel all the way down and load a pellet into the rear of the barrel. Pull the barrel back up and it' is ready to fire.