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07-22-2008 | 05:23 PM

#1

gzg38b

Nontypical Buck

Joined: Oct 2005

Posts: 2,355

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From: Flushing Michigan

Extreme FOC arrows

[align=left]I just got done reading Dr Ashby's "Arrow Lethality Study Update 2005 Part II". [/align][align=left][/align][align=left]This study is about the effect of extreme FOC (>19%) on arrow penetration. He found that, for two arrows with identical weight and the same stylebroadhead, the arrows with extreme FOC penetrated better than normal FOC arrows. [/align][align=left]"The extreme FOC arrows averaged 62% more penetration than the normal FOC arrows."[/align][align=left][/align][align=left]http://www.archery-engineering.co.za/archeryPDFFiles/arrow_leathality.%20part_2.pdf[/align][align=left][/align][align=left]Extreme FOC arrows are supposedto be alot more stable in flight, according to what I've read. I'm thinking of using a stiff spine light carbon arrow cut at 28"and usinga 220grainMuzzyPhantomjust to see how it flies.[/align][align=left][/align][align=left]Here's my thinking:[/align][align=left]CX 400s with Blazers cut to 28"[/align][align=left]220 Grain Muzzy Phantom[/align][align=left]504 grain total weight moving at 265 fps (79 ft-lbs KE)[/align][align=left]21% FOC.[/align][align=left][/align][align=left]This will get me good speed, proper spine, and 21% FOC. My current arrows get me similar weight and speed but are only about 10% FOC. What do you think? What kind of arrow flight could I expect?[/align]

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