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Broadhead tuning

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Broadhead tuning

Postby Shadow24 » 04 04, 2015 •  [Post 1]

Hi all,
First off let me introduce myself--Im 19 years old first started bowhunting around five years ago but have not killed anything yet, although i did get a shot off at a small mule deer buck two seasons ago (missed high). I've been on a few elk hunts here in Idaho and gotten within 100 yards a few times but my lack of elk hunting knowledge and experience has prevented me from closing the deal. My only bowhunting knowledge has come from this site as my father is not into hunting big game (he prefers waterfowl and upland). Because of that, I am very grateful for this forum and the amount of information available for us "newbies".

Now onto my question...Im pretty comfortable shooting my field tips out to 70 yards and I just recently paper tuned my bow until I got a perfect hole in the paper. My problem is when I put my broad head on it shoots 4-5 inches left at 20 yards. Ive read on the internet that I should just move my rest to the right a little bit to compensate for the few inches. But doesn't that just defeat the purpose of paper tuning? Would it be bad to just adjust my sight to the left a bit?

I also read that my arrows might be underpined or overspined... I'm pulling 60 lbs, 30 inch, gold tip 400 spine, 100 grn broad head.
Thanks
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Re: Broadhead tuning

Postby Indian Summer » 04 04, 2015 •  [Post 2]

A couple thing. First of all welcome aboard. And for the record... my dad never hunted. I'm completely self taught. I went from BB guns and stick bow in the back yard in Pennsylvania to becoming a licensed outfitter in Montana. You can do this!

A perfect hole when paper tuning is not essential. It's common to have a slight tear from a tuned bow. So don't "over tune" your bow striving for a bullet hole. Watch your arrows, or get someone else to so you can see if they are fishtailing or porpoising. If you arrows are flying true and your groups are consistent I call it good.

The key is consistency. First.. make sure you aren't attaching a problem to your arrows by spin testing your broadheads. Inconsistent broadheads will be nothing but trouble. Once you are satisfied that your heads are fine go ahead and move the rest a little. Then shoot your field points and see that they are still flying consistently and making tight groups. After that see where your broadheads are hitting. But be aware that not all broadheads will land in the same place as field points even if you are correctly spined. What brand of broadheads are you using?

In the end lots of guy will make adjustments to hit the X with their hunting heads. BUT... if your bow is tuned you would leave the rest alone and simply adjust the site pin instead.
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Re: Broadhead tuning

Postby archery bum » 04 04, 2015 •  [Post 3]

https://www.youtube.com/watch?v=YIUtwtngsGg
try this, should solve most of your problems. Do it with field tips first, then with broadheads to fine tune. He also has videos on broadhead tuning.
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Re: Broadhead tuning

Postby Shadow24 » 04 04, 2015 •  [Post 4]

Thanks for the replies! I'll get to work now and see if I can get my broad heads to fly like my field tips
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Re: Broadhead tuning

Postby jmez » 04 04, 2015 •  [Post 5]

You should broadhead tune the bow. Paper tuning is a good starting point but you should set it up so your BH's can be shot with FP's.

BH's act like fletching at the front of the arrow, they steer from the front. Minor problems with flight will be corrected by you fletching when shooting FP's and give you a good tear in paper. When you put on a BH they magnify both form issues and flight issues. If your BH's are that far left at 20 yards your bow isn't tuned and you don't have good arrow flight. You need to move the rest to get them together.

What kind of bow are you shooting. You can also use the yokes if the bow has them. If you set the center shot with either walk back or the modified French tune then use the yokes.
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