Samples from seven corers, from the same location, were measured for shear strength, water content, and unit weight. The latter is least affected by sampling disturbance. No corer was superior in repeatability of measurements. Each corer appeared to yield good results for at least one of the measured properties, but yielded the poorest results on another property. No definite trend between disturbance across a core section could be established in connection with kind of corer, depth in the core, or variability in shear strength. In comparing laboratory data measured on samples obtained with one corer with data obtained by another, a variable factor must be introduced. The factor appears to vary with the property being compared and the depth within the core.