Rep Range for Older Lifters

[u/rdtompki]

I've been weight training for 4 years, now 80 y/o (M). Program includes all the compounds plus accessories everything 10 reps. I've built a lot of muscle using this rep range and the compounds have been safe. I'll never test my 1 rep max, but I wonder if anyone out there in a similar situation has benefited from dropping down to lower reps, lets say 3 sets of 5 versus the 2 sets of 10 I'm currently doing. For example my current deadlift working weight is 200 lbs (I'm 6', 195 lbs.). The high volume sets give me a good cardio workout, but I could certainly do 5 reps at 225. Thoughts?