SEVERAL years ago I hurt my rotator cuffs and it was a long come back (hurt them NOT on bench). I began using STRICT form on flat bench and could only do 225 x 3...for a LONG TIME. Nothing improved them. I swore off the flat bench.
I did dips for chest...elbows out, leaning in, going as deep as I could comfortably do. Got up to using a few 45's for some good reps. Chest grew a little and my routine would be dips, incline bar, and one other exercise...for about 6 months. When I came back to bench...I benched 300 for a couple my first workout. About 4 months later...maybe 6 months...I benched 315 x 3.
A lot of factors could have been at work there though. Injury, time, time of training, age, etc... I'd do them now if I had a dip stand.
B True