HitchHeiken

I have a question: 

I started playing golf 4 years ago with a new set of Callaway Alpha 815 and irons, Senior shaft and thoroughly enjoyed them getting 215-225 yds a drive, but the 12 rounds I have been noticing a reduction in all my clubs in distance. I play 18 5 days a wee year in and year out. Is it possible through allot of useage to lose a 10% reduction in yardage. Should I be looking at a new set of Callaway Rouge’s or Epic equipment. Handicap currently 17.

Thank you for any thoughts on this.......