A lot of the old guys did pullovers and deep squats to expand the rib cage and give them a barrel chest. Pilates also works the muscles in the rib cage-haven't tried pilates. There's a ton of exercises for chest. Guys like Dorian Yates respond with heavy training low reps, while others, like Shawn Ray, prefer higher reps. Both had great chest development. You need find what works for you.
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