I'm really trying to find where I saw 360%, it has been a while, I might have to update if I find it. The 2001 Kleck study was 4 years newer and gave the range 166% to 1000%. And it says in the context of 300k firearm crimes in 2008 so I'm not sure how that works and whether an adjustment gets made for a reduced 200k firearm crimes in 2017.