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At what variance does GPI affect an arrow?

skyleralan

skyleralan

PMA Member
The arrows I have used the past couple seasons have been discontinued and weighted in at 8.9 gpi, my new arrows are a little heavier which I wanted, but come in .4gpi heavier at 9.3. I shot some that were .3gpi lighter and didn't notice any different at 20-40 yards do you think 4gpi heavier will make much of a different?

I will get my new arrows in next week. I got a new bow this year, so any additional tweaking doesn't sound like much fun to me. The spine is obviously the same at 400.
 
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What is your arrow length? Example: .4 gpi @ 29" is 11.6 total grains. A single 2" Blazer vane weighs 6 grns. Little to no difference. I'm guessing no more than .5" drop at 20 yds, If any. Hope that helps.

EDIT: 9.3 - 8.9 = .4 not 4. Just to clarify!
 
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oBIGBUCKDOWNo said:
What is your arrow length? Example: .4 gpi @ 29" is 11.6 total grains. A single 2" Blazer vane weighs 6 grns. Little to no difference. I'm guessing no more than .5" drop at 20 yds, If any. Hope that helps.

EDIT: 9.3 - 8.9 = .4 not 4. Just to clarify!
Click to expand...

Sorry, that is what I meant forgot the decimal. Arrow length is 28.25 inches
 
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