The bullet could be making contact with the barrel metal before the slide is fully forward.
If so (in my experience) it can be really difficult to get the slide to pull back to eject that cartridge from the chamber. Once ejected, you should be able to see marks around the bullet where it is making contact.
But, if you're sitting at the house, field strip the pistol, remove the barrel, hold it in one hand muzzle down and drop a cartridge into the chamber. If should drop right it and you should be able to hear the case mouth make contact with the end of the chamber in the barrel.
Then, you should be able to grab the rim with your thumb/finger and spin the shell inside the chamber. And, it should pull out easily when you grab the rim with that thumb/finger.
If it won't drop in till you hear the metal to metal sound of the case mouth making contact with the end of the chamber, or you can't easily spin the cartridge while it's in the chamber then either the barrel isn't chambered correctly or the cartridge is too long (bullet not seated deeply enough.)
Some barrels and some bullet styles/brands/weights just don't work well together. You might buy a different brand or bullet weight and not have any issues. Or it could be the barrel is causing the problem.