working out FT LBS TO FPS

[Gungeek]

I think what the man is after is, the theoretical maximum muzzle velocity of a 12 ft/lbs air rifle, depending upon the weight of the pellet being used. At the end of This Link, is an image of the usual formula re-arranged to make Muzzle Velocity (in feet per second) the subject. You'll need a calculator with a square root key - use Windows' own calculator. Regards ... Geek

[a88ott]

ok thanks

but how do i find the Muzzle velocity
on a air rifle ?

thanks

[alan-aitch.]

Click

You can edit the pellet list to add your pellet and weight, (look in the help file) then you can input the required ftlb and it will tell you the fps for the selected pellet, or you can input the fps and it'll tell you the power.

Alan.

[Gungeek]

ok thanks

but how do i find the Muzzle velocity
on a air rifle ?

thanks

Use a Chronoscope, though some people call these devices Chronographs. Regards ... Geek

[gtfreight]

ok thanks

but how do i find the Muzzle velocity
on a air rifle ?

thanks

If you don't know the muzzle velocity you can't work out the kinetic energy in ft/lbs.
I don't understand why you give a fps reading for conversion, then you ask how to find out how to get fps.
You can buy inexpensive chrono's (Combro) for about £40 that attach to the end of your muzzle and they will give you a read out in fps. They can also convert this into ft/lbs if you know the weight of your pellet.
Regards,
Gary.

[shedhead]

thanks for that link, its a peach.
shedhead