The C-11 shoots .177 Caliber BB's not pellets
Yes they are the same clip.
No they are all the same.
Yes, the TSD Sports NBB 1911 is compatible with the Crosman Airmag C11 magazines.
The Crosman Phantom is designed to shoot ONLY .177 pellets NOT BB's, they will ruin the rifling in the barrel.
there is no hop-up system on a Crosman C-11.
Crosman pellets are fine. however if you really want quality pellets I suggest H&N pellets
No the Crosman V350 is a BB rifle only
The Crosman model 761XL is designed to shoot BB's or any .177 Caliber pellet. These are the most common pellets you can find. Make sure you select .177 Caliber pellets.
You should not have to push on the clip. See the owners manual at the link below. Your C11 may have to be repaired.
The Crosman 760 doesn't shoot Bullets it shoots BB's or .177 caliber Pellets.
The Air Mag C11 (Airsoft) is designed to shoot 6mm Plastic BB's. The C11 BB pistol is designed to shoot .177 Caliber metal BB's.