I think Genetics are a HUGE part of it.. that said.. if you work it hard it WILL grow provided you eat good enough also.. but.. IMO to get a BIG chest.. you have to do Heavy Benching I think..
Free Ike, check out these - http://www.t-nation.com/free_online...ybuilding/build_a_huge_chest_in_six_weeks&cr= http://www.t-nation.com/free_online...formance_bodybuilding/perfect_10_training&cr= Chad Waterbury's one of the few guys on these sites worth reading