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Advantage of 85 vs 100 grain broadheads?
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Topic: Advantage of 85 vs 100 grain broadheads? (Read 721 times)
nw_bowhunter
Longhunter
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Location: Seattle, WA
Posts: 716
Advantage of 85 vs 100 grain broadheads?
«
on:
February 08, 2010, 06:40:47 PM »
What are the advantages of using 85 vs 100 grain broadheads?
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ridgefire
Hunter
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Posts: 226
Re: Advantage of 85 vs 100 grain broadheads?
«
Reply #1 on:
February 08, 2010, 07:05:58 PM »
obviously a faster arrow but i would recommend the heavier head for better penetration im a fan of a 125 grain head
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Machias
Muleskinner
Frontiersman
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Location: Four Lakes, WA
Posts: 4136
Re: Advantage of 85 vs 100 grain broadheads?
«
Reply #2 on:
February 08, 2010, 07:26:23 PM »
I am in the lighter broadheads are a disadvantage crowd, but I'm sure you will get lots of different opinions. About the only animal I'd use that broadhead on is pronghorn...and actually I wouldn't use one that light even on a speed goat.
«
Last Edit: February 09, 2010, 09:55:56 PM by Machias
»
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“People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf.” -George Orwell
MAVsled
Tracker
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Posts: 90
Re: Advantage of 85 vs 100 grain broadheads?
«
Reply #3 on:
February 08, 2010, 08:57:16 PM »
before you try, do the math & check your FOC results and percentages with that 85 gr tip versus what you currently use.
with my 29.5" draw, #70 lbs SBXT and matched arrows using a 125 gr tip; my best performing FOC on target and game is 11-13%.
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huntindoc
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Posts: 19
Re: Advantage of 85 vs 100 grain broadheads?
«
Reply #4 on:
February 08, 2010, 10:59:51 PM »
I am a huge believer of heavier is better. Give me a slow tree trunk that will drive completely through vs a tiny toothpick that doesn't penetrate.
I was fortunate enough to poke a hole in a rag horn Roose last year on the west side. He was 35 yrds, quartering away more than 50 degrees. I hit him just high through the last rib, all the way through the chest cavity, and still had enough energy to punch 5" through the off side scapula. The arrow penetrated at least 40" of elk (going through at an angle). Same on my deer this year. Shot very close, about 10 yrds out of a tree stand, and the arrow went through the deer and stuck 6" in the ground.
Good luck and make the first shot count.
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rougheye
Sourdough
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Posts: 1033
Re: Advantage of 85 vs 100 grain broadheads?
«
Reply #5 on:
February 08, 2010, 11:06:16 PM »
Cant think of any advantages , speed is overated , heavier is better
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nw_bowhunter
Longhunter
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Location: Seattle, WA
Posts: 716
Re: Advantage of 85 vs 100 grain broadheads?
«
Reply #6 on:
February 09, 2010, 07:46:46 AM »
This is what I was thinking.. just wondering why someone would use an 85 grain broadhead. What exactly is FOC?
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ribka
Sourdough
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Posts: 1016
Re: Advantage of 85 vs 100 grain broadheads?
«
Reply #7 on:
February 09, 2010, 08:22:15 AM »
What is FOC?
If there's one variable of broadhead flight that's often overlooked, it's the arrow's front-of-center balance point, or FOC. In practical terms, FOC determines how much leverage the fletching has to correct the arrow's flight. The farther forward the balance point is from the center of the arrow--the FOC point--the longer the lever the fletching has to work with and the easier its job. The general recommendation for FOC is 12 to 15 percent for broadhead-tipped arrows. This compares to a recommendation of eight to 11 percent for field points (for pure target applications). The difference in suggested FOC is due, in part, to the longer length of a broadhead. It's also due, in part, to field points not having the ability to steer an arrow like a broadhead can.
Much prefer heavier arrows. With heavy 700 grain arrow and 55 lb longbow have shot thru many deer, wild boar, cariboo, one elk and bear. I chrono'd at 170 fps. Amazing what a slowier heavier shaft can do. Think speed is over rated . I 'll take a heavy stable, well tuned arrow moving at 200 fps over a light fast arrow moving at 300 fps any day for hunting applications. I do not shoot over 40 yds though
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ribka
Sourdough
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Posts: 1016
Re: Advantage of 85 vs 100 grain broadheads?
«
Reply #8 on:
February 09, 2010, 08:24:26 AM »
...And a heavier broadhead.
125 grns or more. Seems arrows, at least heavier, shoot more stale with heavier broadhead.
I guess FOC explains this
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Hornseeker
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Sourdough
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Posts: 1137
Re: Advantage of 85 vs 100 grain broadheads?
«
Reply #9 on:
February 09, 2010, 12:42:44 PM »
I"m with everyone else... I will not be shooting under 125 with my new wheel bow... With my trad gear I shot 175 to 260 grain broadheads...
I am setting up this alphamax with a stiff arrow, a 100 grain brass insert, then I can strap on a 125 on up to that 260... and have some MASSIVE FOC.. the arrow will likely be going about 220... But that is 40 fps faster than the same arrow out of my trad bow... so life will be Goood...
And yeah...it would not be ideal for longer shots unless you were very careful to range the shot and had a pin for that range...
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huntnphool
Old Salt
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Location: Pacific Northwest
Posts: 9359
Re: Advantage of 85 vs 100 grain broadheads?
«
Reply #10 on:
February 09, 2010, 08:57:57 PM »
I have taken several bull elk and a moose with 85gr. Thunderheads, its more about shot placement than broadhead size. Some guys feel the need for .338RUM in the lower 48 too.
Moose_08_499.jpg
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Ray
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Posts: 5635
Re: Advantage of 85 vs 100 grain broadheads?
«
Reply #11 on:
February 09, 2010, 09:04:37 PM »
125 is my minimum. I prefer 150 with another insert of either 50 or 75 grains. 125 works well on a pronghorn but if you hit a rib you'll want good FOC and weight. Not just speed. Will 85 work? Probably in many cases.
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D-Rock425
Longhunter
Online
Location: Lake stevens
Posts: 638
Re: Advantage of 85 vs 100 grain broadheads?
«
Reply #12 on:
February 13, 2010, 11:18:51 AM »
I've passed though elk at 40 yards with a 75 grain broadhead. I now shoot 85 grain wac'ems and slick tricks. Its all about shot placement. 15 grains is not going to make a huge difference
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Ray
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Posts: 5635
Re: Advantage of 85 vs 100 grain broadheads?
«
Reply #13 on:
February 13, 2010, 02:51:04 PM »
Whether or not you hit a rib is sometimes luck. Not shot placement skill. If you hit a rib on some bigger boned animals the FOC arrow and solid broadhead are going to matter.
I must add.. I agree that 15 grains is not a large difference in matters.
«
Last Edit: February 13, 2010, 03:14:52 PM by Ray
»
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stickslinger
Member
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Location: EASTERN WA
Posts: 18
Re: Advantage of 85 vs 100 grain broadheads?
«
Reply #14 on:
February 14, 2010, 12:11:56 PM »
the difference in kinetic energy between 85 gr. and 100 gr. at 315 fps is 4 more foot pounds with the 100 gr. broad head. and kinetic energy is what we all should be concerned about. lets face it not every shot will end up in the perfect spot, after all we are human
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