Range needed to hit cap with bstep?

Not really familiar with damage formulas and such, so I'll post this here.
I have max bstep and 115% boss damage+12% total damage, and 15% PDR from codex.
What would be the range I'd need to hit damage cap(critical is fine) with a hit of bstep?
Assuming I'm fighting a 25% PDR boss.

Uh, with post-justice, you should need less than a 60k range.
I can hit 220k with crits with a 22k range at level 150 with no %boss or %damage.
0_O

That's not how damage works most of the time. Following your supposed pattern, 60k range would net you 600k damage not 999999

Following your supposed pattern, 60k range would net you 600k damage not 999999

That's raullogical.

No really though with 115% boss it should about double it so 50k would do it if not for pdr, assuming the 10x damage multiplier per bstep hit is accurate.

Assuming post justice:
x*7.1*2.27*0.8375 = 999,999

x = 74,085.044159360793599786634859456

Thank you.