Range of the shaft

[tromic]

I found this formula on Internet. It could be used for estimation. The result for speed is similar to what I got measuring the speed. I've got 4,2 m with 1 mm mono, Tomba slider, 7/1000 shaft for inicial speed 33 m/s. From calculation the result is 3,75 m what could be OK for thicker mono.

 

[tromic]

If you would be using the formula to compare the two shafts of the same mass but different thicknesses, which both have the same initial velocity, turns out that the thinner shaft would have a greater range which I think is not true. So the formula can be used only for rough estimation of range!

 

[tromic]

I suppose on short distances, say to 2 - 3 m both shafts 6,5 and 8 mm would have similar energy on target if they had same mass and same starting speed, so the thiner would have better penetration though the fish. On longer distances, say 6 m the thicker would have more energy and better penetration despite of higher diameter.

This is a formula from Filippo Anglani about penetration in a tissue of a fish.
I do not know how it is good but it is obvious that thinner shaft would have higher penetration - P (cm), if we compare shafts with same mass (M) and same speed (v) on the target:

P = 0.07 * M^1.3 / d * (( v –10) / 25)

M - mass of the shaft (g)
d - diameter of the shaft (mm)
v - speed of the shaft (m/s) on the target.

It is assumed that the minimal speed on the target must be more than 10 m/s.