Eaglet; I very much regret that my lame humor offended you. Your replies to my thread, along with almost every other reply, have allowed me to make an informed decision about how to use mpbr and I listened to what you had to say. Sorry you thought I singled you out. I didn't.
Back to the subject; based on all the answers I got, I've decided I need to stay with my 4" window. Badaboom and ur make a telling point; I don't always hit exactly on the poa, and that error will add to the size of the ballistic window. And just as important, it has become instinctive and works for me, so if I have to decide in seconds, I know I can take the shot or I know I have to pass.
Thanks to all, Tom
Texas State Rifle Association Life Member
NRA Endowment Life Member
A big fast bullet will beat a little fast bullet every time