I shortened up my setup time a bunch by wire tying all my cables together. I have a 8-10 & 12 ft markings on the cable for distance. Loop the cable around my rest so that the distance mark is right on the muzzle. To line it up easy I have a 20 ft kite string that loops around either a turret or the back leveling knob of the rest, then under the stock. Stretch the string line up and level. Takes about 10-15 min. from opening the case. I shoot at a public range and have no problems. Also I can read small 17 cal, zippy 4000+ and I am not limited on distance.

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Swifty