I really can't explain it but for some reason the heavier blades just seam to plow through the beard better than the hollow ground. both blades are very sharp and passes the dreaded hanging hair test. both blades are 6/8 in size and they both are Sheffield's.. I honed both this morning and tried them out to night. both shaved the beard but the lighter blade required more pressure. I've only been doing this for less that a year but I wonder does anyone else have the same results.