Thus, values of the time required to produce a displacement from D^ to D* can be determined by the relation m dD

The first step in determining the time values is to plot a reciprocal velocity curve, as shown in figs. 2-34 and 2-35. Since the barrel and bolt arc returning to battery, the displacement is decreasing. Therefore the values of time are determined by integrating under the 1/V curve from right to left.

Having the time versus travel curves, it is now possible to find the travel and velocity corresponding to each value of the time and to use this data to

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