I have a FX Bobcat in .30 and I I was currently attempting to plug some info in ChairgunPro. They list a .30 domed pellet but not brand specific. I created my own; one for my .30 Cal FX Pellets (46.30gr) and one for my JSB Exacts (44.75gr). The problem I have is that I do not know the ballistic coefficient for either of these pellets. Can anyone help me out..??
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Ballistic Coefficient
- Thread starter Broberts1
- Start date
I have seen GA bc numbers of around 0.042 for these pellets.
Maybe some one with a chrony can get you more accurate numbers.
regards
Robin
Maybe some one with a chrony can get you more accurate numbers.
regards
Robin
Upvote 0
If you are using the Chairgun software, you can calculate your BC by either change of velocity or change in point of impact (POI). I use change in POI by first zeroing at my desired distance. Then moving the target out 20-30 yards and shooting at the same point of aim. This will give you a group X inches below your aiming point. Measure from center of your aiming point to center of your group with a micrometer. Plug this number into Chairgun along with your pellet weight and velocity and it will calculate a BC. How is your .30 Boss shooting?
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