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Publications : Bowhunting World
Last Updated: Feb 22nd, 2007 - 18:37:03

Finger Shooting, Arrow Penetration, and More
By Norb Mullaney
Apr 8, 2005, 15:08

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Finger Shooting, Arrow Penetration, and More 

Ask Norb:
A few Questions/Answers from Bowhunting World's Top Technician, Norb Mullaney

Norb Mullaney
BowhuntingWorld.com

Finger-Shooter Fan 
I am a longtime finger shooter, and it seems the sport is now geared to the newer, single-wheel, shorter-bow release shooters. It seems that us finger shooters are left behind. I have been searching for the best finger shooter rest on the market for some time. Also, is it possible to use a release with a bow set up for fingers? 

Paul Scalogna
Port Jefferson Station, New York

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 interested in arrow penetration and the role of kinetic energy and momentum. In your Feb. 2002 Tech Talk column you mentioned your planned technical paper on the subject. 

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
Northville, Michigan 

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 
I have a 1998 Golden Eagle Evolution, which I enjoy very much. But I shoot a lot of 3-D. I have a target in my backyard I shoot every day, and I go to the local 3-D range every week. I shoot aluminum arrows (2315, 28 inches long, with 125-grain tips, 5-inch plastic vanes, and I use a release), but I end up bending some arrows. I own an arrow straightener but I am not very good with it. 

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.
Shelby, Michigan 

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? 
I have a Golden Eagle Light Speed One (45 pounds to 60 pounds). The bow was new in 1999 and now I can get 55 pounds out of it with a new string and cable. My question is, can I put the bigger limbs on to compensate for the weakening limbs over time? 

Robin Ward
Lincoln, Nebraska 

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.


Bowhunting World Magazine
PO Box 362
Mt Morris, IL 61054-0362

Call 1-800-877-6118
Web Site: BowhuntingWorld.com
Email: Mike Strandlund, Editor
mstrandlund@ehlertpublishing.com
Mark Melotik, Managing Editor
mmelotik@ehlertpublishing.com


For cutting-edge how-to information, bowhunting gear know-how, and exciting adventure, look to Bowhunting World magazine for the best and most reliable articles in the industry.
Editor Mike Strandlund and Managing Editor Mark Melotik are professional, award-winning journalists with passion for bowhunting and nearly 50 years combined experience in the sport. Field editors Chuck Adams, Norb Mullaney, Richard Combs and Jeff Murray are among the most respected in the bowhunting writing field.
Bowhunting World's Special Issues -Bowhunting Xtreme, Buyer's Guide, and Bowhunting Guide Annual-offer you focused themes for presentation of your essage. 

© Copyright 2005 by Bowhunting.net

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