Most golfers know that general golf industry iron loft gaps are 90% of the time in 4 degree loft spacing which may or may not be correct for the distance gap between clubs for you specifically. Clubs are designed and built off the rack and industry wide to fit an average player but that does not take into account what you may need for correct fit and performance. As you can see below if you are a slower to slow-medium club head mid iron swing speed golfer you need different than 4 degree loft gaps in your set. You also maybe able to carry fewer clubs and get better performance with larger loft gap and corresponding distance gaps. All clubs should be fit and lofts adjusted for best performance. There are a few designs also like the Wishon 730CL with 6 degree loft gaps and specially designed high lofted driver, long and high fairway woods, hybrid in 6/7 and 8/9 plus wedges.
These are the mid iron club head speeds…..
mid iron speed over 72 mph – 4* increments (average player)
mid iron speed 60-72 – 5* increments (some seniors and some ladies)
mid iron speed under 60mph – 6* increments (seniors and ladies)
You can make an argument to say that over 85mph you could go with 3* increments but you never do because that will leave you with a very odd set makeup. So over 72mph you stay with 4* and just live with the fact the distance gaps will increase to 15 yds or more as speed keeps going up from 85 with the mid iron.
Think about all these factors when you play golf and possibly why your distance gaps are off and you wonder why.