Most of the guys I know that paper tune, end up throwing BH's on there and re-adjusting anyhow, he may as well do a walk-back, then slap some BH's on there and adjust until he groups BH's and FP's together.
Just my $.02, because trying to Paper Tune just ticked me off more than anything. I could never get a "Perfect Tear," but I can keep my BH's grouped pretty tight to my FP's at 40 and 50yds all day long.
I’m with him. My home made paper tuning frame sits in the garage collecting dust because I find no need for it.
Walk back, toss on the BH & make anymore needed adjustments.