IBM 1130 User Manual page 91

Record Size
Because of the physical limitations inherent in a
punched card (80 columns), it can be cumbersome
to process long records that are kept in card form.
Section Subsections Page
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Each record may require four or five cards, which
must be identified and kept in order. On the other
hand, disk records may be as long as 320 words (640
characters). IT long records are required, you have
a few "plus" points for placing the data file on disk.