Originally Posted by CallmeKing
I fell if I was doing 70-75 percent of my 1rm I could knock out at least 8-10 reps pretty easily my max is around 300 so 75% would be 225.
This is probably due to you not having a true 1RM. Prilepin's chart won't work with a projected 1RM. You need to actually lift a max set of one rep, not use your best set of 5 or whatever other number.