If by 10X10's you mean German Volume Training (GVT), than the same weight is used on the bar. The first set will be with a weight that you probable could do 4-5 more rep's with than 10 reps. With the usual 60 seconds between set's, that light weight can start to feel very demanding by the 5th set. By the 7th set, or so, the weight can actually feel lighter. The 9th and 10th set shifts back to being very hard again. GVT is a version of doing 100's divided into 10 set's. Can also SS GVT with row & benches, for example. 90-120 seconds rest between sets. Works great with push/pull exercises. I'll stay on a 6-8 week cycle of GVT from time to time. Easier on the joints and good for developing muscle mass. Good Luck.