A range has four levels, not two. Enter the extremes and the body cluster of your consolidation and see where the trigger and the invalidation actually belong — and how far apart they are.
R_outer — the trigger
R_inner — the invalidation
S_inner
S_outer
Range width W
—
outer to outer
Upper zone
—
—
Risk on a long
—
trigger to invalidation
Risk as share of W
—
how much of the range you risk
—
Why the asymmetry is the whole point. You trigger on the outer level because that is where the resting stops sit — the fuel the impulse runs on. You invalidate on the inner level because that is where the sellers who were defending the range live; if price closes back among them, the reason you were long has gone. Trigger strict, invalidation loose. Most traders do the reverse: they enter on the first poke through the body cluster, then hold until price reaches the far side of the range to admit they were wrong — turning a small, early answer into a large, late one.