Very lagging chest

[RedHerring]

Its always been far less developed than the rest of the muscle groups. and I was wondering how I could actually make it grow. I hear dumbell press works well but should I do it with higher weight, lower reps (say 5x8) or lower weight, highter reps? (5x12)

strength is fine but size is not good

[CY.]

what is your current routine?

if strength is fine, then i suggest adding more higher-rep sets