I had a conversation with my coach recently about this subject. I get the feeling that I am/was swinging too hard for a couple of reasons. We have identified that I have a tendency to lift up and fall back when I miss the ball. (I am playing to a 6.x handicap, so its not like its off the map). The is shallowing out my AOA and I catch it thin/toe and or flip my hands to save it pulling the ball.
The harder I swing the more this tendency comes out. I have drills that help combat it most notably half shots. I hit half shots and focus on rotating and keeping form, nice divot after the ball, rotate all that stuff. I am finding that my ‘half shots’ are going about 80% or more of a full blown swing. 8-iron for instance I play a stock shot at 145. The half shots with great contact and AOA have fantastic flight and distance in the 130 range. Half shot drivers still go a solid 200 yards for me.
I will hit a half dozen shots half speed the move right into full speed focusing on form and staying over the ball.
Half shots remove TENSION from the swing. Full shots create body tension when you are really trying to “muscle one out there” or swing hard even if its a habit and unintentional!
To answer the question quickly though:
Driver- 90+% Gotta get that ball out there.
4-6 irons- 90% Need the club head speed for distance
7-Wedges- 80%- Accuracy is key inside 165