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    • Bowgnome
        August 8, 2011 at 11:58 am
        Post count: 9
        #5871

        Is it possable to have too much weight fwd. on an arrow ?
        I am drawing 49# and shooting a 575 gr. arrow w/ 20+ % FOC.
        Just wondering how much is enough and what is too much.

      • David Petersen
        Member
          August 8, 2011 at 2:10 pm
          Post count: 2749
          #45508

          Hi Bowgnome. In my experience, and in Dr. Ashby’s research, so long as you’re getting good arrow flight and can live with the trajectory at your max range, there is no such thing as too much weight up front. Not only does increased FOC enhance penetration (all else being equal), it also enhances arrow flight stability, thus accuracy. Sounds like you have a solid set-up for most game. Dave

        • Ed Ashby
          Member
            August 8, 2011 at 11:25 pm
            Post count: 817
            #45963

            Dave said it all. There appears to be no upper limit for FOC’s benificial effects,

            Ed

          • Troy Breeding
              August 10, 2011 at 9:46 pm
              Post count: 994
              #48157

              Bowgnome,

              I’m just getting into all this EFOC and UEFOC. For years I studied everything Ed wrote and stuck to it. Heavy, heavy, heavy….

              After a 4 year lay off I now find he is saying that heavy weight is good but moderate weight with EFOC and UEFOC is even better.

              Since I started working towards high EFOC and UEFOC on moderate weight arrows I’m really liking what I’m finding. I did back off my arrow weight when I started back shooting. I knew that it doesn’t really require a heavy arrow to take a deer. When I started back my arrows weighed 605 and had 20% EFOC.

              Now my arrow weigh 670grs and have a 26.4% EFOC and I rally can’t see that much change in arrow trijectory until I pass 25yds.

              Don’t let it worry you,,, just do it.

              Troy

            • Ed Ashby
              Member
                August 10, 2011 at 10:53 pm
                Post count: 817
                #48193

                Just a clarification, so that no one gets the wrong impression. What the data shows is that an arrow of lower weight but higher FOC can out-penetrate a significantly heavier arrow having lower FOC. For space sake I won’t get into the specific amounts of difference in weight and FOC required for this to become the expected outcome. That can be found in the 2008 Updates, Parts 5 and 6. However, WHEN ALL ELSE IS EQUAL (same shaft size, same broadhead, same FOC, etcetera) the heavier arrow will still out-penetrate the lighter arrow.

                Ed

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