Sensitivity

How much your point of impact shifts at the active range when key inputs are off, a quick read on what actually matters at distance.

Usage

• Reached from Sensitivity Analysis (drawer → Tools & System). It used to be a widget, and the widget still works in a layout saved before the page existed, but it can no longer be added to a new one: the inputs it needs are easier to reach on a page than behind a tile’s gear.
• The page carries its own range dial and its own list of inputs to test; the rifle and location it solves for are the ones chosen at the top of the page. Moving the range re-solves the trajectory out to it, so the shift is always read somewhere the bullet actually reaches.
• For each enabled input it re-solves the trajectory with that input perturbed by your chosen amount and reports the resulting POI shift at the active range. Every solve re-zeros, so the figure is the true shift at range for the same zero.
• On the web it is part of the Cloud-Sync subscription: without one the page shows a note in place of the table. The mobile app includes it.
• It re-runs the solver, one input at a time and one per frame, so a full table never blocks the page while it is being worked out.

Configurable

Every perturbable input is listed on the page (the retired widget puts the same list behind its gear). Turn each one on or off and set its Amount.

Amounts are real quantities in your own units, not percentages: “+15 fps” is a figure you can compare with your chronograph’s spread, and “+0.010” is the gap between two published BCs. The three that scale with the load start at about a percent of it, so a 2,650 fps centrefire and a 250 fps airgun each open on a sensible figure rather than the same one.

Input	Amount	On by default
Velocity	fps or m/s	Yes
BC	lb/in²	Yes
Temperature	°C	Yes (10 °C)
Pressure	hPa	Yes (10 hPa)
Weight	gr or g	No
Altitude	m	No (100 m)
Zero range	m	No (5 m)
Sight height	mm	No (2 mm)
Humidity	%	No (20%)

Output

• A table of Input, Change and the resulting Shift: one row per enabled input, in the order above. Change is the perturbation applied (e.g. +25 fps, +10 °C).
• The unit is named in each Shift heading rather than repeated on every row, and the page shows the shift twice: once in your dial unit, so you can see whether an input costs you a click, and once as a length on target in your own linear unit, so you can see whether it matters. A “clicks” preference reads as mrad here, and a scope already dialled in cm or inches shows the one column rather than the same numbers twice. The retired widget, having a tile’s width, shows the dial unit alone.
• Larger numbers mean that input matters more for the current shot.