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Max Online: 16728 @ 03/25/12 08:51 AM
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#5962232 - 10/05/15 02:46 PM Why would a fixed broad head shoot low?
spro Offline
Woodsman

Registered: 11/12/07
Posts: 125
Loc: Highland Village
Son did some target practice before the hunt saturday with his new fixed broad heads and was hitting the target 6 inches low and 3 inches to the left every time. Field tips were dead on every time. He is pulling back 45 lbs. Field tips and fixed broad heads were both 85 grain. Made a quick dash to the archery shop and picked up a pack of 85 grain mechanicals and now hitting the target. Don't recall the brand of either one. Has anyone else experienced being off that much with fixed vs. mechanical? What could be the cause of this? While picking up the new mechanicals the tech looked over the bow and said everything looks good. Got his 1st pig Saturday evening so the new mechanicals worked great.

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#5962268 - 10/05/15 03:05 PM Re: Why would a fixed broad head shoot low? [Re: spro]
cmorsch Offline
Pro Tracker

Registered: 08/16/11
Posts: 1484
Loc: Midlothian, TX
The bow is not tuned, fixed blades will show you if your bow is not set up right. There are many things that could be causing this. What type of bow is it? Just to list a few, the rest might not be aligned right, knock point may be high or low, cam lean at full draw, the list goes on.

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#5962278 - 10/05/15 03:09 PM Re: Why would a fixed broad head shoot low? [Re: spro]
cmorsch Offline
Pro Tracker

Registered: 08/16/11
Posts: 1484
Loc: Midlothian, TX

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#5962315 - 10/05/15 03:25 PM Re: Why would a fixed broad head shoot low? [Re: spro]
spro Offline
Woodsman

Registered: 11/12/07
Posts: 125
Loc: Highland Village
Thanks. Didn't know about tuning for broadheads. Guess I need to take it in again for tunning or just stick with the mechanicals. Bow has been tunned before. Tech looked it over and said all was good before we bought the mechanicals.

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#5962444 - 10/05/15 04:26 PM Re: Why would a fixed broad head shoot low? [Re: spro]
BOBO the Clown Online   content
decoy

Registered: 04/19/07
Posts: 41117
Loc: Metroplex
I would stick to fixed on 45lb draws. A good two blade would be perfect

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#5962494 - 10/05/15 04:51 PM Re: Why would a fixed broad head shoot low? [Re: spro]
spro Offline
Woodsman

Registered: 11/12/07
Posts: 125
Loc: Highland Village
Why is that? Are mechanicals less effective at lower draw weights? He is shooting accurate with the mechanical. Would a fixed 2 blade fix the drop problem that exists with a fixed 3 blade?

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#5963161 - 10/05/15 09:54 PM Re: Why would a fixed broad head shoot low? [Re: spro]
sqiggy Online   content


Registered: 07/13/09
Posts: 1878
Loc: Franklin, Tx Hunt in Panola ...
Originally Posted By: spro

Tech looked it over and said all was good before we bought the mechanicals.
I'd like to know how he could tell it was tuned by just looking at it!!! confused2
At 45lbs., the reason he needs fixed heads is because he needs all the energy he can get for penetration.
Mech. takes up some of the energy to open the blades, resulting in less penetration.

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#5963188 - 10/05/15 10:05 PM Re: Why would a fixed broad head shoot low? [Re: spro]
passthru Offline
THF Celebrity

Registered: 12/05/06
Posts: 10868
Loc: Saginaw, Tx
Look at it like this. A tuned bow is pushing directly straight and centered on the arrow resulting in straight flight and maximum energy transfered into that flight and by extension resulting in maximum penetration. An untunded bow is pushing on the arrow slightly indirectly resulting in the back of the arrow starting off out of line and the fletching creating the drag to straighten it out. Now with field points or mechanical heads there is not tiny vane or wing on the front of the arrow working as a rudder. Those blades don't act as a rudder if they start out of a well tuned bow because they aren't starting off out of line. But with a bow that isn't well tuned those blades cause front end torque and the arrow flight is like a screw motion. Resulting in poor placement and penetration. Does that make sense to anyone but me?
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#5963299 - 10/05/15 11:54 PM Re: Why would a fixed broad head shoot low? [Re: spro]
kmon1 Online   content
junior

Registered: 09/27/06
Posts: 20293
Loc: Texas
Makes sense to me Passthru, that was one of the points I was about to bring up

When the bow Is not tuned so the arrow Is not flying straight even with good poundage for a mechanical it will not penetrate as far as an arrow from a tuned bow, there will be lots more drag slowing the arrow down from friction on the shaft of the arrow.

There are lots of "bowtechs" working that would never touch my bow, at big box stores and "Pro-Shops".

cmorsch gave a short list and there are several other things that could be added.
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#5963606 - 10/06/15 09:21 AM Re: Why would a fixed broad head shoot low? [Re: spro]
spro Offline
Woodsman

Registered: 11/12/07
Posts: 125
Loc: Highland Village
Makes a lot of sense now. Will be broadhead tuning his bow as soon as I can.
So if he is shooting low and left with broadheads I need to adjust the arrow rest up and right correct?
Thanks for all the great responses!

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#5963625 - 10/06/15 09:30 AM Re: Why would a fixed broad head shoot low? [Re: spro]
ChrisB Online   content
Tracker

Registered: 12/20/06
Posts: 878
Loc: Prosper , TX
Yes and make small adjustments. Anyone who tells you your bow is tuned without shooting it doesn't know what they are doing.

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#5965238 - 10/06/15 10:04 PM Re: Why would a fixed broad head shoot low? [Re: spro]
Tactical Cowboy Offline
Veteran Tracker

Registered: 08/23/11
Posts: 2845
Loc: Abilene
Nock high.
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#5965753 - 10/07/15 10:05 AM Re: Why would a fixed broad head shoot low? [Re: spro]
BowMan59 Offline
Bird Dog

Registered: 07/21/11
Posts: 352
If your going to shoot fixed blade shoot the Slick Trick, best fixed blade shooting BH on the market only drawback cutting diameter. Take it for what it's worth some BH can't be tuned! My Matherws is tuned, Rage flys perfect, slick trick perfect, montec perfect, Muzzy low right. You tell me, just does! In my opinion at 45# go get the Slick Trick over 50# Rage two blade.
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#5965761 - 10/07/15 10:10 AM Re: Why would a fixed broad head shoot low? [Re: spro]
BowMan59 Offline
Bird Dog

Registered: 07/21/11
Posts: 352
_________________________
I don't always hunt but if I'm not I'm fishing

Lone Star Trophy Ranch Comstock TX.
Where Dreams become Memories!
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#5965869 - 10/07/15 11:21 AM Re: Why would a fixed broad head shoot low? [Re: spro]
BOBO the Clown Online   content
decoy

Registered: 04/19/07
Posts: 41117
Loc: Metroplex
Originally Posted By: spro
Why is that? Are mechanicals less effective at lower draw weights? He is shooting accurate with the mechanical. Would a fixed 2 blade fix the drop problem that exists with a fixed 3 blade?


Accuracy is bow tuning and form
Broadhead accuracy is bow tuning
Penetration is blade angle and cutting diameter (assuming bow is in tune)

Mechanicals as a majority have large cutting diameter and flatter blade angle, toss in the loss of energy to open it and you are better off with fixed on lower poundage bows.

Another thing to think about is likely hood of a passtru. Fixed will continue to cause damage.

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