
Gidday Nick,
low reps with as much weight as you can handle is best for building mass. ie. if your used to doing 12 - 15 reps at 40kg standing curl, try instead 3 - 6 reps of 50 or 55kg. just make sure your not placing to much strain on your back. this method has worked for me fine. I'll start with a high rep warm up of 10 - 12 at low weight, doing 1 maybe 2 sets then hook into almost twice the weight doing 6 - 4 - 3 reps for 4 to 10 sets depending on the exercise. If you haven't already tried this, give it a go, you wont be disappointed. I promise.

realy,...honest,...