Helpful Equations

Muzzle Energy

muzzle energy (ft/lbs) = (fps*fps*grains) / 450240

Pressure

Bar to PSI

1 bar = 14.5038 psi

PSI to Bar

1 psi = 0.06895 bar

Speed

Feet per Second (fps) to Metres per Second (m/s)

m/s = fps * 0.3048

Metres per Second (m/s) to Feet per Second (fps)

fps = m/s * 3.28084

Weight

Grains (gr) to Grams (g)

g = gr * 0.0647989

Grams (g) to Grains (gr)

gr = g / 15.43240