I have found that when swinging a racquet that is slightly heavier but has the same swingweight, I get more plowthrough so it feels like I'm swing faster with the heavier racquet, but I'm not sure if I'm. Momentum= mass X speed so if they both swing the same, then the heavier one will have more momentum and get slightly faster no? That is how I explain my experience but it is a barely noticeable difference.
Wilson W6 Blue Steel 4 1/2, customize to 11 oz unstrung and 4 pts HL. Tecnifibre Pro Red Code 17g at 54 lbs .No dampener, Prince Resipro grip.