It PURELY depends upon, and is up too, each hunter individually.
After 20 years of huntin em and with God's grace and blessing I have taken 2 P&Y 8ptrs with my bow (dont ask about the 9 and 10s I have gotten crazy with while a bow was in my hands) so for me a bowkill minimum would be a 135" 10+ ptr or a 130"+ 8ptr.
For muzzleloader and gun kills I have been blessed as well. My largest deer with a rifle was a 154" 14ptr. For firearms I wait on a 140" 8 ptr (a BIG 8 when you get down too it) and anything with 10 or more points is safe unless its over 150".
But I was just as excited for an old high school buddy of mine this past rifle season when I put him in a stand of mine in MO and he took his first buck, a 125" 8ptr. As I kill bigger deer and catch bigger fish I find myself often getting more enjoyment out of or thinking more about leading others like my children and family/friends too trophies of their own. I guess its just "the next stage" that I am passing into. But I thank God for being there and being able to share it with them. If its a trophy for you then its a trophy for me!!!
Good luck too EVERYONE out there and I hope whatever is BIG too you will walk by this fall and your arrow/bullets will fly true!

RA