Heavier arrows
04-14-2007 | 07:04 PM
#22
Joined: Sep 2004
Posts: 334
Likes: 0
From: Da U.P. eh!
RE: Heavier arrows
ORIGINAL: davepjr71
Not correct of heavier having edge everytime. you'd have to have a huge diff in weight for that statement to be true. A lighter arrow with a FOC in the 19% range can out penetrate a heavier shaft to a point. Also, my 391 gr out penetrate my 520 gr. FOC of 391's in about 18%. FOC of 520's is 11% or so. Weight forward helps penetration too. Also, lighter arrow traveling faster usually always has a higher KE at the same draw weight.
Of course, this stirs the same issue as The physics being fun post in here too.
Not correct of heavier having edge everytime. you'd have to have a huge diff in weight for that statement to be true. A lighter arrow with a FOC in the 19% range can out penetrate a heavier shaft to a point. Also, my 391 gr out penetrate my 520 gr. FOC of 391's in about 18%. FOC of 520's is 11% or so. Weight forward helps penetration too. Also, lighter arrow traveling faster usually always has a higher KE at the same draw weight.
Of course, this stirs the same issue as The physics being fun post in here too.
04-14-2007 | 07:08 PM
#23
Joined: Sep 2004
Posts: 334
Likes: 0
From: Da U.P. eh!
RE: Heavier arrows
ORIGINAL: Arthur P
NO! That is so wrong! The only time that could possibly happen is if you use an arrow so heavy it's outside the bow's efficiency range. And that's got to beINSANELY heavy.
As long as you're talking about using the same bow at the same draw weight, with arrows running about 12 grains per poundor less,a lighter, faster arrow is NEVER going to have more KE than a heavier one.
I suggest getting a few copies of "Bowhunting World Magazine" and read some of Norb Mullaney's bow reports. He does a great job of charting KE and efficiency with arrows ranging from light to heavy.
Sorry, LittleChief, but you were being told falsehood and I had to correct it. Your setup is fine.
Also, lighter arrow traveling faster usually always has a higher KE at the same draw weight.
As long as you're talking about using the same bow at the same draw weight, with arrows running about 12 grains per poundor less,a lighter, faster arrow is NEVER going to have more KE than a heavier one.
I suggest getting a few copies of "Bowhunting World Magazine" and read some of Norb Mullaney's bow reports. He does a great job of charting KE and efficiency with arrows ranging from light to heavy.
Sorry, LittleChief, but you were being told falsehood and I had to correct it. Your setup is fine.
04-14-2007 | 08:25 PM
#24
Typical Buck
Joined: Jan 2005
Posts: 576
Likes: 0
From: Minnesota
RE: Heavier arrows
I also have a short draw length and I shoot realy light arrows to get more speed. My speed is about 265fps and it is realy quiet although it always seems like the deer hear it comeing I think they hear the fletchings.
04-16-2007 | 05:24 PM
#25
Nontypical Buck
Joined: Dec 2006
Posts: 1,552
Likes: 0
From: Normal, IL
RE: Heavier arrows
It is very true that the heavier arrow will most likely get more KE out of the same bow campared to a lighter arrow. But considering that its only gonna get maybe 2 or 3ftlbs at the very most its pretty minimal. And further more consider that there is way more to penetration than having a heavy arrow with 2 foot pounds more KE than a lighter one. You could have a smaller diameter lighter shaft shooting a cut on contact broadhead with a somewhat conservative cutting diameter compared to a lincoln log aluminum weighing 650 grains shooting an expandable broadhead, out of my bow Id put the money on the lighter arrow.
