.35 JSB Ballistic Coefficent

Hello guys new to the forum, but not to airguns.. Quick question if anyone has an answer pretty please?

Do you guys know the BC on a .35 JSB doing 160 fpe? These things are shooting nasty accurate out of the Bulldog, hole in hole @ 25 yards.. under and inch at 50 yards about 1.5-2 inches @ 100yards. And the gun only has around 100 rounds through it, so I am pretty sure that will get better. Currently I have the Bulldog sighted in with those 145grain Nosler’s @ 50yards, those thing shoot great!..went through (3) boxes on Sunday @ the gun range.

Too funny having guys with kitted out AR-15’s and M4’s drool over your “pellet gun”! And then I turn around and shoot better groups then them! @ 50-100yards…. wtf!?

I have not had time to chronograph the gun even though I did have the chrony with me at the range… I was too busy sighting in,testing and answering questions from at least 15-20 people at the range. But I can tell by how HOT those JSB’s are shooting that I am at least getting 900fps like Manny,Jim Chapman, etc.

So if anyone knows the BC please let me know. I am trying to use Chairgun to plot my trajectory, even when entering the BC for the Nosler’s of .176 and my 50yard zero it is not giving me the correct info…with the Nosler’s and a 50yards zero, the gun shoots 3 Mil-Dots low @ 100yards. But Chairgun is telling me it should be a 5 Mil-dot Hold-over.