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…..