FPB Trajectory

[billyc49ca]

Have a friend who dgot a deal on a bunch of these. He's shooting them in his Triumph and quite happy with the accuracy. If he sighted in dead on at 100 where would he be at 150, and 200yds. He's using 2 50g pyro pellets.

Thanks

 

[cayuga]

If he knew the BC of the FPB he could run it through a ballistic calculator with a guess of the speed and come pretty close. But the best way to know the drop is to hit the range and try it at the different distances.

 

[Lee 9]

I can tell you what I get with 90 gr of BH209 out of an Endeavor with a 28 inch barrel. I am getting 1770 FPS and the figured BC from my chrony and the trajectory is.3.
50yd = +2.6"
100yd = "0"
150yd = -4.5
200yd = -13"
Hope this helps, I really don't know what his velocity would be. Lee

 

[johnpb]

The insert that comes with the package has a small chart for using 100 and 150gr of Triple7.