To accumulate optimal volume using lower repetition ranges, more sets need to be performed. (simonsterstrength.com)
Their research found that, when using weights in the 60 to 85 % of 1RM range, optimal volume appears to be in the range of 30 to 60 reps per major muscle group per workout when 2 to 3 workouts per performed each week. (legionathletics.com)
The volume is pretty much dictated by optimal volume on Prilepin's table, where I perform 5 * 3 in week 1, 6 * 2 in week 2, and 7 * 1 in week 3, then repeat that in the second wave of the mesocycle. (rugbystrengthcoach.com)