I'll actually take the percentages off their true 1 RM. I do this because I test them and know that it is an actual max. Also, I only do this with our Junior and Senior student-athletes so I am pretty familiar with what they can do. There is no doubt the 5-3-1 works great. Take it easy.
Thanks for checking out our video. She is an upperclassman on the team. For our upperclassmen we use a variation of Wendler's 5-3-1. That was actually her last set at an estimated 85% max. On the last set, we let them do as many reps as possible as long as the technique stays solid. All other sets that day (75% & 80%) were performed for 5 reps. We were planning on her doing 5-10 reps, but were not going to stop her. Even for anaerobic sports, I am a big believer in high rep squats. Great for hypertropy, core strength, and conditioning.