I have praticed and got my gun on at 100 yards and know what it does at 150.that is my max now.I did take a nice 6 pt. at 145 a couple yeards ago.
that is with a good rest and scope on my gun.it depends on you and your gun,how much you have praticed with it.it takes a lot of work on loads and bullet weight and so forth.
good luck on working it out.