As a matter of fact, I can remember when hardly anyone even had a caliper for measuring cases or OAL. EVERYBODY owned one of the notched case length gauges, and that was how they set up case trimmers.
Most guys, who admittedly were loading for their hunting guns, would have looked at you with confusion if you asked them about a bullet to lands measurement.
I turned "hardcore" sometime in the eighties, and started experimenting with seating my bullets out as far as the rifling allowed, and then bumping them in a smidge further. Never really knew what a "smidge" measured, but I shot some pretty good groups. Of course I also shot some excellent groups with some bullets that were probably seated a quarter inch off the lands.

This simply wouldn't be possible these days.

jd