Calc Indivisible - Maha Heruka Ajna's beam

Maha Heruka Ajna's beam attack is powerful. I might come back for the energy at some point, but for now, I want to look at the speed. Previously, I used the average height of a 16 year old Indian girl for Ajna (that being 1.56m), so let's stick by that. First we'll scale to Dhar...
177 pixels = 1.56m
1 pixel = 1.56m/177 = 0.00881355932m
0.00881355932m X 225 = 1.98305085m

Next, we scale Dhar to Maha Heruka Ajna and Kala...
131 pixels = 1.98305085m
1 pixel = 1.98305085m/131 = 0.0151377927m
0.0151377927m X 642 = 9.71846291m

Then we find the length of Kala's horn in the beam shot...
159 pixels = 9.71846291m
1 pixel = 9.71846291m/159 = 0.0611224082m

And now we can finally scale the length of the beam.
0.0611224082m X 845 = 51.6484349m

With all that done, what's the timeframe?
1 frame. Keep in mind that as this is PS4 footage, it's 30 frames a second rather than 24.
T = 1s/30
= 33.3333333ms

Finally...how fast is the beam?

T = 51.6484349m/33.3333333ms
= 1549.45305/340.29
= Mach 4.55333113

Final Results
Maha Heruka Ajna's beam = Mach 4.553