Welcome to the forum Lenny. I pretty much followed this technique, except I used 100 rds. After the 5 rd firing, I finished the 100 rds with shooting10 rnds then clean.
I used Hoppe's Benchrest Copper Solvent. Make shure you go by the solvent's instructions about the time left in bore, esp on harsh cleaners.
Use a bore guide, and plastic coated rod, or a tactical cleaning cable so as not to ruin the muzzle's crown, as a worn or damaged crown will affect accuracy.
Click on the search button (upper right), and enter keywords Barrel break-in, several threads will come up on this subject.