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Old 10-09-2019, 11:09 PM   #1
Pope & Young
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Join Date: Nov 2006
Location: Melissa
Hunt In: Sutton County
Default FMJ Spine question

Trying to decide between a 340 and a 300 spine on a 5mm shaft

Carbon Defiant Turbo 28/65#. 28 shaft, 100 grain broadhead and would like to add either 50-75 grain insert. If my math is correct this would get to about a 530 grain arrow.

Looking at all the charts it looks like I could go either way. Any advice/input?

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Old 10-10-2019, 01:31 AM   #2
Ten Point
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Join Date: Jun 2011
Location: houston
Hunt In: Regan wells, fedor, paige

I’d go 300 just for the stiffer shaft. Stiffer shaft usually tunes easier
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Old 10-10-2019, 09:20 AM   #3
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Join Date: Aug 2011
Location: gulf coast
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The 300 will set up well for you with your current setup and the 75 grain insert, great arrow weight.

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