Need help adjusting front and rear sights for zero on No4 MK1/2

[Parashooter]

Let's at least pay a bit of attention to what has already been posted:

I am using 150 grain soft point boat tail ammo. Prvi partisan to be exact.

I'm fairly confident this means he is using factory ammunition, not handloads. The ballistics of this load are published on Prvi's website, so it's not hard to calculate a trajectory for him if he doesn't wish to do so himself.

Output from jbmballistics.com online calculator -

Ballistic Coefficient:	0.375 G1	Caliber:	0.311 in
Bullet Weight:	150.0 gr
Muzzle Velocity:	2690.0 ft/s	Distance to Chronograph:	0.0 ft
Sight Height:	0.80 in	Sight Offset:	0.00 in

Range	Drop	Drop	Velocity	Energy
(yd)	(in)	(MOA)	(ft/s)	(ft•lbs)
0	-0.8	***	2690.0	2409.7
50	0.3	0.5	2570.5	2200.3
100	-0.0	-0.0	2454.1	2005.6
200	-5.0	-2.4	2230.3	1656.4

What's hard for me to understand is why he wants to change the front sight - an exercise that would be necessary if his POI were too high with the aperture bottomed out, but isn't needed when his POI is low. Because I seldom shoot genuine Mk7 ball, it's very handy to have some wiggle room in both directions (up and down), to adjust for different loads. The last thing I'd want is a front sight so short that I had no downward adjustment available to zero a different load that impacts higher.

He has correctly calculated the amount of sight change needed to bring his POI up 4.5" at 50 yards:

I came up with 28.5 x 4.5 = 128.25 / 1800 = .07125

But it seems to me he's applying this to the wrong end of the rifle. Running the aperture up 9 clicks (.008" per click times 9 = .072") will have the same effect. Adding another click will give the appropriate elevation to put him near center at 100 yards (with a center hold) and 2 or 3 more will give close to the 2.4 minutes needed to adjust for the 5" drop from 100 to 200. If we can just persuade him to stop thinking about the graduations on the leaf, he should do OK.