Chemical fiber industry is the main instrument gas and absorb gun, printing and dyeing main gas wire is power and gas meter.

In order to improve the applicability and practicability, and increase the shoot-distance, we design a new laser target practice system without the wire between the gun and target.

This paper primarily introduces distinguishing features of in-bore mechanical environment of high chamber pressure gun and reguirments of "hard wire" technique for obtaining in-bore date.