Roll 2d10, rerolling any 1s or 2s until 8 numbers within the proper range have been generated.

Oh, Peter will be formidable once he gets the proper range.

It had simply been a running line of patter, a distraction thrown up before him while he sought cautiously after the proper range.

Most combinations start with a jab as a way of closing the distance and finding the proper range.

One or other would sink them, once they had learnt to hold their hand till they were in proper range.

The gunners would then "walk" their shots closer to the target until they established the proper range.

Training tested the skill in selecting the proper range to fire and the aim point of the weapon could be evaluated.

If the trainee "fired" his weapon within the proper range, the sound of gunfire could be heard.

At the same time I wondered how those distant throwers could ever know whether they had the proper range or not.

In between is the proper range for a computer screen.