My screen is 21" off the back wall.
Take into account the size of the M60s, their displacement off the wall of about 6" and wanting the screen to be inline with the speaker fronts....

I suppose i could push the screen right back but the look in the room would be very different and i'm not sure what would be gained by doing so. i would also have to tinker with the speaker distance settings to sync the sound with the picture.

"Those who preach the myths of audio are ignorant of truth."