Abstract: What is described is an apparatus for stuffing casings or similar receptacles with paste, in particular with sausage meat or other foods in the form of paste, using a portioning means (16) that stuffs adjustable portions of the paste through a stuffing horn (14) into a casing (62) of a pre-defined caliber or caliber group, wherein said casing is pulled portion-wise during stuffing from a casing holder (casing brake 24). A guide tube (26) is disposed after and as an extension to the casing holder (24), the internal diameter of said guide tube 26 being approximately the same as the smaller outer diameter of the pre-defined casing caliber and/or the pre-defined casing caliber group, such that the guide tube 26 has a coating of lubricant on its inner surface and that the casing is pulled into and through the guide tube 26 in the process of being stuffed.