69 here, added a 7w and 5 hy, irons start at 6i. Like others, I've seen the distances start to shorten. Twice daily stretching has helped along with walking as much as possible. I've been tracking stats for years and now look closely at bad tee shots, flubbed chips and 3 putts. These seem to have big impact on my scoring - plus finally moving up to the senior tees. Handicap slowly going down and fun going up!
You realize that not every 7 iron has the same lofts, yes? Typically OEMs like Callaway and TaylorMade will crank lofts on a 7 iron down to as low as 27°. Most of GigaGolf’s stuff is traditionally loft (around 35° on a 7 iron) OEMs are banking on you testing the club and seeing that this newfangled 7 iron goes much further than whatever your playing.
But you need to take into account the loft on your old club or any club you test against. I can make any club I want to and stamp a 7 at the bottom. What matters is how the club performs at 35 degrees of loft. So that 7 iron you hit from GigaGolf is likely higher lofted than even the 8 irons of those other sets.