Lot Tested vs Non Lot Tested RWS R50 Anschutz 1913 BR50

This Anschutz 1913 BR50 was RWS R50 Lot tested. The resulting 'card' of seven lots is seen in the video. The best match of lot to rifle is obvious.
Testing is done under controlled environmental and climate conditions.
Attention is given to barreled action stability to ensure repeatable dynamics round after round.
I was shooting some 'random purchase' RWS R50 the other day and the accuracy impressed me. So I thought I would compare the random box of R50 with a box of Lot tested R50 that I usually reserve for informal club shoots.
I realize this 'random' box of R50 could have been in the mix of 7 on some other day of lot testing.
I've seen 10 or 20 rounds out of a box of 50 show outstanding near perfect accuracy, with the remaining 30 or 40 rounds showing very good to great accuracy. The point being, a pick of rounds on a given day at a given time with given variables can make all the difference and produce that one hole group, or not .