By Anthony Barnum Jon Teater - Archery History

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By Anthony Barnum&Jon Teaterwww.ArcheryEvolution.comIntroduction:Welcome to the 2007 Compound Hunting Bow Face-Off. The focus of this event is hunting style CompoundBows that highlight the cutting edge of those products currently available in the archery marketplace. The goalis to provide those archers who enjoy hunting with appropriate objective information for aiding in the purchasingprocess. That being said, this evaluation is by no means conclusive; some tests could not be performed due tolimitations in resources, time, or budget. Each archer should assess what is important to him or her andinterpret the results accordingly. We hope that we have been able to address the objective issues concerningmost “demanding” archers with regards to Compound Hunting Bows.The test consists of 23 different compound hunting bows from 18 different companies for this evaluation. Thegoal of this evaluation is to provide information on bows throughout the price spectrum. We hope you enjoy theresults and find the information provided to be both useful and helpful in your quest to find the best compoundhunting bow for you!Evaluators:The individuals involved in this assessment have no affiliation with any of the participating companies. We doeverything possible to remain objective throughout the testing process through the use of a Hooter Shootershooting machine and other test equipment. We hope that this is reflected in the presentation of the results.Participants:The archery companies whose product was used during the Face-Off testing conduct are as follows: ! ! " # ! Content 2007 Anthony Barnum & Jon Teater. All rights reserved.1

Initial Conditions and Test Categories:Each company was asked to provide the compound hunting bow that they felt best represented their company andwould best suit the following categories: %'& % ""() *%Note: The criteria outlined in this evaluation were deemed to be the important factors to consider for a compound bow. This evaluation in no wayrepresents all areas that are important to archers. Personal experience and preference were used to derive these criteria. Also note that nosubjective testing was performed. The evaluators recommend that anyone who is in the market for a compound bow shoot as many different makes /models as possible to determine what best suits their individual needs and desires.Upon receiving each bow, a string loop of Brownell’s .083” String Loop material is installed, after which the bow is set to precisely 29inches in AMO draw length. An Easton Bow Force Mapper hand-held digital scale, adapted for use on a Hooter Shooter, is thenused to set the peak draw weight to 60 pounds (averaged over 5 consecutive measurements). This draw weight is checked withCoffey Marketing Digital Game Scale to ensure consistency in the draw weight readings. Each bow is then fitted with a Spot-HoggPremier arrow rest, after which paper tuning commences. For consistency, the Hooter Shooter is used during the draw-length, drawweight and paper tuning process to reduce human induced errors. After completion of the paper tuning process, performance testingbased on the test categories can begin.For the performance tests, 300 grain Speed Pro Max Ultra Lite 5.5 GPI carbon arrows, Carbon Express Maxima Hunter 250 360grain carbon arrows, Victory Archery VForce 400 420 grain carbon arrows, and 540 grain Easton XX75 2514 aluminum arrows areutilized. All weights are verified an Easton Advanced Grain Scale and confirmed with a Coffey Marketing US Reloader Digital PocketScale. The Speed Pro arrows are outfitted with three 1.8 inch Duravanes, with the Carbon Express Arrows utilizing three 2 inchQuickSpin Speed Hunters. The Victory and Easton arrows are outfitted with three 4 inch Duravanes. A Hooter Shooter is usedthroughout the performance testing to minimize human induced errors. The Easton Bow Force Mapper Professional Chronographwas used increased down range kinetic energy, while others use lighter arrows for increased speed. Becauseof these issues, noise output readings are measured at point blank range for 300, 360, 420 and 540 grainarrows.Procedure: Each bow is mounted to the Hooter Shooter inside an Anechoic Chamber. A Larson Davismodel 831 digital sound level meter (SLM) is mounted on a tripod and positioned 8 inches in front of a standardmeasuring point on the Hooter Shooter with the microphone set at a height of 36 inches. The digital soundmeter frequency weighting is set to ‘A’ (which allows the meter to respond as the human ear would) with themaximum sound output measurements taken from shot to shot. A series of three (3) shots is executed for 300,360, 420 and 540 grain arrows from each bow, during which the peak sound measurements (dBa) arerecorded. From these measurements, the average noise output is calculated for each bow.Assumptions: An assumption associated with this test is that the sample size of three firings per arrowweight is sufficient to correctly characterize the noise output of the bow at point blank range.Figure 7 Noise Output Measurements taken in Anechoic ChamberContent 2007 Anthony Barnum & Jon Teater. All rights reserved.27

9Figure 4 Noise Output Measurements taken at Point Blank rangeContent 2007 Anthony Barnum & Jon Teater. All rights reserved.28

9Results:Compound Bow300 Grain ArrowPoint Blank (dBa)84.8786.486.4 86.6!87.3!6,8887.588.06,6, :,:,8;8000Compound Bow88.488.5420 Grain ArrowPoint Blank (dBa)83.684.3784.5!6,8884.584.8-85.5!80006,6, :,:,8;85.885.886.0360 Grain ArrowPoint Blank (dBa)Compound BowRank12245678985.085.185.77!686.3,88-86.66,6, 87.087.3800087.4:,:,8;! " #!Rank87.98;540 Grain ArrowPoint Blank (dBa)Compound Bow12335677981.8781.883.083.6800084.2-84.5!85.2 86.06,6, Content 2007 Anthony Barnum & Jon Teater. All rights reserved.29686.4Rank123456789Rank123456789

9Results Chart: Average scores ranged from 90.9 to 84.2 dBA.Content 2007 Anthony Barnum & Jon Teater. All rights reserved.30

:)*% Objective: The objective of the Vibration Test is to provide an indication of the amount of hand shock each bowproduces under shot execution with four different arrow weights. For consistency, the vibration data is collected at thestabilizer bushing on each bow.Rationale: The less vibration output by a bow and felt by the archer during and after shot execution, the moreenjoyable a bow is to shoot, especially during long practice sessions. Our test equipment is highly sensitive; anarcher may not be able to distinguish between some of the calculated vibration outputs of given bows.Procedure: An accelerometer (Dytran, model 3030A4) is attached to each at the stabilizer bushing. A series of 3shots is taken with 300, 360, 420 and 540 grain arrows, during which vibration data is collected (see “EquipmentUsed” section for equipment details). After data collection is completed, each raw data set is analyzed to determinethe average maximum vibration amplitude of the three shots for each arrow weight.Assumptions:An assumption is made that the stabilizer bushing area of each bow is an area that isrepresentative of the amount of vibration an archer can expect to experience.AccelerometerFigure 8 Vibration Data Collection SetupContent 2007 Anthony Barnum & Jon Teater. All rights reserved.31

:)Results:300 Grain ArrowVibration (G)Compound Bow33.193758.84464.570! " #!65.1918;!68.712 75.49776.3836,6, 88.448 90.372420 Grain ArrowVibration (G)Compound Bow27.370737.593! " #!69.3628;65.0546,6, 62.502!78.145 675.62673.912*800069.330360 Grain ArrowVibration (G)Compound BowRank12345678930.523743.872! " #!59.3768;67.9686,6, 71.876!75.282 679.687*8000RankCompound Bow12345678979.05881.610540 Grain ArrowVibration (G)24.662729.44355.583!57.195*57.839 58.62160.3266,6, *800060.375#61.266Content 2007 Anthony Barnum & Jon Teater. All rights reserved.32Rank123456789Rank123356789

:)Results chart: Average scores ranged from 190.074 to 28.937 G’sContent 2007 Anthony Barnum & Jon Teater. All rights reserved.33

Acceleration Curves300 Grains360 Grains420 Grains540 GrainsContent 2007 Anthony Barnum & Jon Teater. All rights reserved.34

# 8)" The “Overall Performance Best Picks” are provided in the following table. The percentage of points each bow receivedwith respect to the highest scoring bow in each of the test categories (excluding adaptability / adjustability) was used todetermine the total number of percentage points (highest scoring bow for a test category receives 100 percentage pointsfor that category). This provides a truly comparative analysis of how each bow placed relative to its competitors basedsolely on the criteria outlined in this test with no additional weighting added. For personalized rankings of each bow,please see the Hunting Bow Results spreadsheet (see Note below).Compound Bow76,6, ! " #!8;!* "4MSRPTotal PercentagePoints 799387.3% 699358.4% 799.99335.4% 799331.4% 599330.6% 730 659327.6% 789322.4%322.4% 689321.8% 699321.2%Rank1234567789 The “Bang for the Buck” Best Picks are provided in the following table. The percentage of points each bow received withrespect to the highest scoring bow in each of the test categories (excluding Adaptability / Adjustability) was used todetermine the total number of percentage points (see “Overall Performance” Best Picks section above). The MSRP foreach bow was then divided into the total percentage points, providing a “percentage points per dollar” assessment. Thisassessment is based solely on the criteria outlined in th

Bows that highlight the cutting edge of those products currently available in the archery marketplace. The goal . The archery companies whose product was used during the Face-Off testing conduct are as follows: . High Country Archery www.highcountry

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