A single dry fire will not have hurt it.
Although it's something that I would also rather not try, a while ago Jim Tyler did some dry fire testing to investigate recoil, surge and transfer port choking on one or two of his long-suffering rifles, with no detriment.
THE BOINGER BASH AT QUIGLEY HOLLOW. MAKING GREAT MEMORIES SINCE 15th JUNE, 2013.
NEXT EVENT :- August 3/4, 2024.........BOING!!