I'd agree with roughly 25 yards but if you're shooting ONLY "relatively short range" the difference between a 25 yard zero and 100 yards zero is irrelevant. Somewhere between 17 and 30 yards is the optimum zero for maximum point blank range for almost every rifle ever made. Most are in the 21-27 yard range
Still happily answering to the call-sign Peetza.
You do not HAVE a soul. You ARE a soul. You HAVE a body.
He is no fool who gives what he can not keep to gain what he can not lose.
-Jim Eliott, paraphrasing Philip Henry.