A Multiple of Range Height Against a Multiple of Risk
There are two calculations that dominate target setting on an opening range breakout, and on most mornings they produce answers close enough that the difference seems academic. The first projects a multiple of the range height beyond the break. The second projects a multiple of the stop distance beyond the entry. They are measuring different things, and on the mornings when they diverge, following the wrong one puts the target in a place price has little reason to visit.
What the Range Multiple Measures
Projecting the range height forward rests on an observation about behaviour: the amount an instrument moves in the first part of a session tends to relate to how much it moves in the rest of it. An active opening usually precedes an active day. A dull one usually precedes a dull one. Using the range as the unit borrows that relationship and turns it into a distance.
The target therefore adapts to conditions with no input from the trader. Quiet morning, near target. Busy morning, distant target. Nothing needs adjusting when volatility shifts across weeks or seasons, because the measurement is taken fresh each day from the instrument itself. That self calibration is the method's real strength and it is easy to underrate.
What the Risk Multiple Measures
Setting the target as a multiple of the stop distance is not measuring the market at all. It is measuring the trade. The number answers the question of what payoff is required to justify the risk being taken, which is a question about the method's arithmetic rather than about where price is likely to go.
That has real merit. It makes every trade comparable, it makes the required strike rate calculable, and it prevents the slow drift toward taking trades where the reward does not cover the exposure. The blind spot is equally real. The calculation contains no term for whether the instrument ever travels that distance. It will happily place a target beyond anything the day is likely to offer and report the trade as having a fine ratio.
Where They Coincide and Where They Split
When the stop is placed at the opposite edge of the range, the stop distance is the range height, and the two calculations become the same measurement expressed differently. This is why the distinction so often goes unnoticed. On a standard structural stop the range multiple and the risk multiple are near relatives.
They separate the moment the stop stops being the range. A fixed stop distance on a tall range makes the risk multiple small in absolute terms while the range multiple stays large, so one method points at a nearby target and the other at a distant one. A tight stop inside the range does the same thing more sharply, producing a risk multiple target that looks conservative but sits a long way off in the instrument's own terms.
The Danger of Combining Them Loosely
A frequent arrangement is to compute both and take whichever is further away, on the reasoning that the trade should be given room. This systematically selects the target that price is less likely to reach, which is a strange thing to build into a method on purpose.
Taking whichever is nearer has the opposite bias and is at least defensible, since it produces the target that is likeliest to fill and treats the further calculation as a warning that the trade may be marginal. Better still is to know which of the two your method is actually relying on and use it, with the other serving only as a check. If the risk multiple target sits well beyond the range projection, that is information about the trade's plausibility, and the sensible response may be no trade rather than a compromise target.
Checking the Number Against the Day
Whichever calculation produces the target, it is worth asking one question of the answer: does the instrument routinely travel this far after the opening period? That is not a precise measurement, and it does not need to be. Someone who watches an instrument regularly knows roughly how much ground it covers on an ordinary day and can tell at a glance when a computed target sits outside that.
A target beyond the day's usual reach is not automatically wrong. Occasionally the day delivers it. But a method that needs an unusual day in order to work is a method with a hidden dependency, and the dependency should be visible before the trade rather than discovered across a run of results that never quite reached the level.