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Finger Shooting, Arrow Penetration, and More Ask Norb:
Norb Mullaney
Finger-Shooter
Fan
Paul Scalogna
Norb's Answer: I have used a flipper-type rest for finger shooting for many years and have found it to be quite satisfactory. I think that New Archery Products offers several excellent rests that work exceptionally well with finger release. You can choose from the very simple CenteRest, the more sophisticated CenteRest Flipper, or the very sophisticated PlungerRest. I prefer the latter because it offers a greater degree of forgiveness that can be adjusted to suit the archer. In addition, you can use either the regular pressure plate (better for hunting conditions) or the low-profile button as you choose. Cavalier also offers several rests that work well for finger shooting. The Free Flyte and Super Flyte series mount on trailing arms and are versatile and dependable. Golden Key features some excellent rests for finger shooters specifically in the Star Hunter, Springy and Hunt Master series. Many of these rests need
to be silenced for hunting. Adhesive-backed, pressure-sensitive felt material
works quite well.
More Energy =
More Penetration
I am curious if your work will be both analytical and testing, or just one or the other. I'm really looking forward to a definitive technical paper that will finally be accepted by all of us who debate the issue, but never have the complete, quantified analytical or empirical proof to back our theories. Larry D. Burcz
Norb's Answer: My tests used shafts of identical outside diameter essentially eliminating some of the variables normally present when comparing the performance of arrows of varying weight. The only variables were arrow weight and hence momentum and kinetic energy. Remember that varying arrow weight alters bow dynamic efficiency hence the mass-velocity product also varies. So far my extended analysis
indicates that within the range of arrow weight that I tested, both momentum
and kinetic energy have a reasonably linear relationship to penetration
potential. I believe that at lower arrow weights momentum will change to
a non-linear relationship. More tests are required.
Carbon Arrow Dilemma
What I would like to know is what if any carbon arrow will weigh close to the weight of my aluminum arrows. The reason being, I have tried some carbon arrows and even with Sims LimbSavers and string leeches, my bow is louder with carbon arrows. So could you tell me what would be the heaviest carbon arrow spined for my bow (I shoot 65 pounds)? And what about these carbon arrows that I've heard about that you slide plastic tubes in them? Robert A. Brown Jr.
Norb's Answer: I judge that you are aware that, with all else being equal, in order to maintain the same noise level with your bow you will have to shoot arrows close to the same weight as your present arrows. I estimate that your 2315 arrows weigh approximately 520 grains. The Game Tracker Terminator Hunter 6075 (T 2003 shaft) weighs 12 grains per inch. A complete 28-inch arrow with three five-inch vane fletch should come close to equaling that weight with a 125-grain point. Game Tracker also offers
plastic weight tubes for insertion in arrow shafts to add weight and increase
kinetic energy. Red tubes weigh two grains per inch. Yellow tubes weigh
three grains per inch. These weight tubes have little effect on the static
spine but do reduce dynamic spine.
Limb Replacement?
Robin Ward
Norb's Answer: Generally all handle designs are developed to be able to use 80-pound limbs with the exception of juvenile bows. There should be no problem with replacing the limbs on your bow with new 60-pound limbs. However, I find it difficult to believe that part of your problem isn't improper set up. I am not aware of your level of expertise, but if you are not skilled in bow mechanics, I suggest that you consult a competent pro for an evaluation. Article reprinted with permission from Bowhunting World magazine. For more information contact: Bowhunting World Magazine
Call 1-800-877-6118
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