Gas Operation

Figure 3-27. Development oi Time-Travel and Time-Velocity Curves for Period Between Unlocking and

Impact oi Piston on Bolt.

general method as used before unlocking. The total loss in gun velocity due to the corrcctcd initial compression of the barrel spring during the interval between unlocking at 0.00307 second and the impact of the piston on the bolt at 0.005 second (an interval of .005—.00307=0.00193 second) is:

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