Why can i hit my wedges further than my 6 iron??

I am a beginner at golf, having only been playing for a few months and I find myself struggling to consistantly hit distances. I am confident with my wedges and believe myself to have soft hands and an ability to feel my distances with them but as soon as i go any higher than a 9 iron my distances start reducing. The last time i went to the range I consistantly hit my PW further than my 6 Iron yet to me my swings for both clubs felt the same... HELP!!