PCB exterior ballistics

Hi All.
Does anyone still use PCB from Norways longe range CD ?(what?...cd?) I was bumbling through the computer yesterday and read through the powerpoint file and jogged the memory abit. Main reason to read it again was to hand onto my father since he got himself a 6.5 Creedmoor and wants to shoot abit further. I'll be giving him my old Leica rangefinder and he will pair that up with his nikon bdc scope.

so back to playing with PCB and its "killing brackets" is a system I see working well for the old boy doing what he does, who still uses it or are we all on the ballistic apps on phones?

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