The 2300S and 2300T have the rearward located 4-48 screw steel breeches, although one is the short breech and the other is the long breech.
In my experience, the plastic breech on the 2240/50/60, 1377/22, 362 guns, even with its limitations, does operate a bit smoother than the steel breeches because of its softer surfaces.
Check for burrs in the port of the barrel - the pellet head may be catching there. Try feeding the pellet with the barrel pointed up and see what this feels like.
Polishing and/or careful fitting of the barrel-to-breech diameter can help.
See attached image of a 1322 with polished barrel and the long steel breech with forward located 4-48 screw. Please ignore the embarrassing amount of dust on the camera lens!

Note that the breech has additional barrel retention grub screws, the third of which is directly above the TP.