I can see where the cup faced drivers might be susceptical to being damaged, but not irons. I would side with @WUTiger in regards to possibly the hitting surface being the culprit. For decades people have been hitting range balls with persimmon with no undue ill effects, but I suppose we could consider that the covers were not as hard back then and thus a little pliable. In any event, if it were me, I would exercise on the side of caution.
or......start going to higher class driving ranges that use better balls. (yah, I know,not necessarily feasible).
For me, if I'm finding my course shots going right or if the slice comes back then I will set up on the right side of the range just to mentally (if not physically) give me a barrier on the right to stay away from. Otherwise like someone above mentioned, range time is often exercise and stretching with a little focused practice mixed in during a lunch break on work days.
Matsuyama is my choice this year. He's been so hot this year in tee to green SG. His putting though is worrisome. I'd like to see Jordan in it again but I think the pressure and nightmares of yesteryear will get to him a little. You can never count DJ out. DJ has been really hot with his drives and that can give you a huge advantage at Augusta and his putting has gotten so much better over the last year and a half. Fowler is hot this week, but he's always been a hot/cold golfer, so we'll see. McIlroy just hasn't shown us anything really special recently, so I can't see him contending. If Day is healthy and playing to his former glory, he can definitely put on a show, but I don't think he's in top shape yet. TW is either not playing or will WD.
My band just commissioned an Epiphone Casino for me to play ONE song during our show season. I'll be sporting a John Lennon model and playing the parts played by George Harrison on Hello Goodbye.
And I'll tell you what, the guitar sounds EXACTLY like George Harrison parts in the song. Just incredible what playing the correct guitar used during recording does for the accuracy and authenticity of the tone in the song. My only beef is having to lug along, prepare and keep another guitar ready to play during our summer shows.
I'm getting lazy in my old age. Can't I just play my favorite stratocaster all night?
He likes his toys too much. There's been so much hype around him that he's trying to ride that wave instead of playing golf. He needs to step back to his amateur days in terms of practice and just taking the game seriously.