Hey guys. I have a F-1 Chrony and I shot several rounds of 175gn HPBT with my .308. I had the chrony set out about 10 feet from the muzzle. 10 rounds gave me an average of 2664. I went out and shot at some soda bottles at 500 yards, did the math on my ballistic software and shot. Slightly high. My friend used it to work up some loads and put the chrony 2 feet from the muzzle. Loaded up some 150 gn .308 bullets got an average X fps. He went with a different ballistic program and shot in the same place i did and slightly high. My 22-250 was showing only 3100 fps (pretty slow for a 250). IS my chrony showing slower than it should? I dont know anyone else who has a chrony to check against. Anyone ever experience this problem?