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 Draw & Arrow Weight for Bison?
#3898423
12/30/12 08:31 PM
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Joined: Oct 2011
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Bowhunt Only
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I am planning a Bison hunt in British Columbia. This will be the biggest animal I've ever taken with a bow...if I'm successful, of course. Wanted to get some feedback on an adequate draw weight and arrow weight (including broadhead) to be effective on these big monsters.
I'd love to hear the input from anyone who's been successful on a Bison or a similar animal. What did you shoot? What was your arrow eight? Broadhead? Draw weight?
Thanks.
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Re: Draw & Arrow Weight for Bison?
[Re: Bowhunt Only]
#3898502
12/30/12 08:58 PM
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Joined: Jan 2008
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scot
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PSE omen would be the only thing id trust or the mathews safari
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Re: Draw & Arrow Weight for Bison?
[Re: scot]
#3898542
12/30/12 09:12 PM
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Joined: Sep 2009
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killemall
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Above, or on of the hard shooting bowtechs
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Re: Draw & Arrow Weight for Bison?
[Re: killemall]
#3898628
12/30/12 09:43 PM
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killemall
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google up archery setup bison, broadheadtalk.com, guy has a step by step on what he did and it looks to have worked pretty well, 700 grain arrows. Like shooting a spear. He seams to have already done the high math on this one.
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Re: Draw & Arrow Weight for Bison?
[Re: killemall]
#3900762
12/31/12 07:21 AM
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Thanks for the information Killemall. I googled it and found the article. Very informative. Looks like I need somewhere around 750-800 grains. Looks like my 70 pound Bowtech will do the trick. I was planning to shoot a 140 grain broadhead. I'll just have to practice with the ultra heavy arrow weight to get my ranges set. I'm not anticipating anything longer than 40 yards and hopefully half that, if all goes well.
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Re: Draw & Arrow Weight for Bison?
[Re: Bowhunt Only]
#3901868
12/31/12 05:59 PM
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Joined: Dec 2012
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sprinkler specialist
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i dont think yer gonna be able to get 40 outta it. not with a 20 yard pin as well
Do it once, do it right!
The Sprinkler Specialist of Dallas
469-576-1969
skype me @ sprinklerspecialist
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Re: Draw & Arrow Weight for Bison?
[Re: sprinkler specialist]
#3901982
12/31/12 06:31 PM
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killemall
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He can get it , it's gonna have the trajectory of a yard dart
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Re: Draw & Arrow Weight for Bison?
[Re: killemall]
#3902052
12/31/12 06:54 PM
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killemall
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when you run that through the calculator it looks horrible, dont know which bowtech but at 340 ibo, 70 #s, 30 inch draw,80 grains on the string it still ain't good. I get the momentum deal but KE is horrible. I dont know, looks like it worked for him. I get a blazing 153fps, and like a 43 ke. am I doing something wrong?
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Re: Draw & Arrow Weight for Bison?
[Re: killemall]
#3903933
01/01/13 04:18 AM
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Joined: Sep 2008
Posts: 150
elite-taxidermy
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You know, Indians killed these things with a long bow. I believe a 70lb bow, shooting anywhere over 290, with a 450grn arrow should do just fine.
gun control means hitting what you are aiming at!
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Re: Draw & Arrow Weight for Bison?
[Re: killemall]
#3903947
01/01/13 04:25 AM
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OUTDOORSMAN81
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Yes you are doing something wrong. Trust me the calculators dont actually show real numbers. You will be able to get out to 40 yds easy. you are going to want to shoot at least a 650gr arrow. I have two arrow designs I shoot. 1st one is 600+ grains and the other is 950gr. I shoot any where from a 175gr broadhead to a 315gr broadhead. Both fly very very well and they fly well above the speeds the calculators said. I strongly recommend reading all the Dr. Ashby reports you can find and call and talk to any of the guys at Alaska Bow hunting supply. They are the people who you are going to want to get your info from. Any company that can get a pass through on an elephant with a compound or drop a cape buffalo with a 70lb re-curve bow (Yes I said cape buffalo with a 70lb recurve!!!!)is the company you want to talk too. All of Dr Ashby reports are on the website as well. http://www.alaskabowhunting.com In addition KE really does not matter, you want to focus on momentum and ft lbs slug. KE is only applicable with firearms. But that is a topic for another time.
"Don’t design a broadhead for when everything goes right,
design a broadhead for when everything goes wrong."
Dr. Ashby
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Re: Draw & Arrow Weight for Bison?
[Re: elite-taxidermy]
#3904179
01/01/13 06:17 AM
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Joined: Jun 2006
Posts: 5,925
DFWPI
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You know, Indians killed these things with a long bow. I believe a 70lb bow, shooting anywhere over 290, with a 450grn arrow should do just fine. What, you mean you can actually kill animals with a primitive weapin like the Indians did back in the day?  Some people are so caught up in speed and the "numbers game" when they should really just get back to some basics. Well said ET.....
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Re: Draw & Arrow Weight for Bison?
[Re: OUTDOORSMAN81]
#3904181
01/01/13 06:18 AM
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Joined: Jun 2006
Posts: 5,925
DFWPI
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Yes you are doing something wrong. Trust me the calculators dont actually show real numbers. You will be able to get out to 40 yds easy. you are going to want to shoot at least a 650gr arrow. I have two arrow designs I shoot. 1st one is 600+ grains and the other is 950gr. I shoot any where from a 175gr broadhead to a 315gr broadhead. Both fly very very well and they fly well above the speeds the calculators said. I strongly recommend reading all the Dr. Ashby reports you can find and call and talk to any of the guys at Alaska Bow hunting supply. They are the people who you are going to want to get your info from. Any company that can get a pass through on an elephant with a compound or drop a cape buffalo with a 70lb re-curve bow (Yes I said cape buffalo with a 70lb recurve!!!!)is the company you want to talk too. All of Dr Ashby reports are on the website as well. http://www.alaskabowhunting.com In addition KE really does not matter, you want to focus on momentum and ft lbs slug. KE is only applicable with firearms. But that is a topic for another time. Well said
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Re: Draw & Arrow Weight for Bison?
[Re: DFWPI]
#3904437
01/01/13 01:08 PM
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killemall
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You know, Indians killed these things with a long bow. I believe a 70lb bow, shooting anywhere over 290, with a 450grn arrow should do just fine. What, you mean you can actually kill animals with a primitive weapin like the Indians did back in the day? Some people are so caught up in speed and the "numbers game" when they should really just get back to some basics. Well said ET..... How did it work out for the Indians guys?
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Re: Draw & Arrow Weight for Bison?
[Re: elite-taxidermy]
#3904532
01/01/13 02:21 PM
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killemall
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You know, Indians killed these things with a long bow. I believe a 70lb bow, shooting anywhere over 290, with a 450grn arrow should do just fine. I think I agree
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Re: Draw & Arrow Weight for Bison?
[Re: killemall]
#3904550
01/01/13 02:29 PM
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Joined: Apr 2007
Posts: 60,580
BOBO the Clown
kind of a big deal
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kind of a big deal
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Id use a very well built 2 blade like the125 gr "solid broadhead"..if you want more arrow weight or FOC you can add brass weights to the front
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Re: Draw & Arrow Weight for Bison?
[Re: BOBO the Clown]
#3904707
01/01/13 03:21 PM
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killemall
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I know that some disagree with math and such but here are a set of numbers,
500 grains at 253 gives .5617 momentum
700 grains at 186 gives .5812 momentum
800 grains at 153 gives .5435 momentum
I know some don't think their bow is confined to the same rules as everyone else but tend to think they are wrong. 340 ibo, 70 lbs, 29 inch draw, 80 grains on the string for speed numbers. I think at 500 grains with a good 2 blade as bobo mentioned you are good. Check it with a chrono. Or if you are like some you will need to find a packing house that will let you shoot through a side of beef I guess.
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Re: Draw & Arrow Weight for Bison?
[Re: killemall]
#3905779
01/01/13 08:50 PM
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Good discussion guys. I'm familiar with the Alaska Bowhunting site and I've read some of Dr. Ashby's reports. Thanks for the link! I'm eyeing the Silver Flame broadheads as a potential choice. I'm planning to shoot a little heavier than 500 grains. 750 is probably too high but maybe 600-ish. Still researching shafts and broadheads, but starting to make a short list so I can get some fletched up and start practicing!
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Re: Draw & Arrow Weight for Bison?
[Re: Bowhunt Only]
#3905878
01/01/13 09:30 PM
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Joined: Jun 2006
Posts: 5,925
DFWPI
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Re: Draw & Arrow Weight for Bison?
[Re: DFWPI]
#3905928
01/01/13 09:49 PM
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Joined: Jun 2006
Posts: 5,925
DFWPI
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Re: Draw & Arrow Weight for Bison?
[Re: DFWPI]
#3906123
01/01/13 10:51 PM
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Nice videos. I liked the compound hunts, I just wish they said what they were using for arrows, broadheads, draw weight and length, etc. But sitll informative! Thanks!
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Re: Draw & Arrow Weight for Bison?
[Re: Bowhunt Only]
#3906128
01/01/13 10:53 PM
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Joined: Jun 2006
Posts: 5,925
DFWPI
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Nice videos. I liked the compound hunts, I just wish they said what they were using for arrows, broadheads, draw weight and length, etc. But sitll informative! Thanks! I just did a quick search on youtube. There may be some more informative videos, just didn't have the time to look them up.
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Re: Draw & Arrow Weight for Bison?
[Re: Bowhunt Only]
#3907606
01/02/13 06:13 AM
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Joined: Oct 2010
Posts: 243
OUTDOORSMAN81
Woodsman
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Woodsman
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Good discussion guys. I'm familiar with the Alaska Bowhunting site and I've read some of Dr. Ashby's reports. Thanks for the link! I'm eyeing the Silver Flame broadheads as a potential choice. I'm planning to shoot a little heavier than 500 grains. 750 is probably too high but maybe 600-ish. Still researching shafts and broadheads, but starting to make a short list so I can get some fletched up and start practicing! Silver flames are great. I prefer a single bevel broadhead such as the Samurai, Ashby, Nanook, or Maasai. The rotational force that you get just explodes bones and increases penetration. But I do shoot both styles. The new Silver flame XXL leaves a blood trail like you would not believe. It is 175gr and has almost a 2" cutting diameter. It is awesome. You mentioned 750 gr being to heavy? Why do you think that? I bet that you could get to a 650gr to 700 gr ish arrow very easily. Whats your draw length? Have you looked into the Grizzlystik Momentum arrows? They are awesome.
"Don’t design a broadhead for when everything goes right,
design a broadhead for when everything goes wrong."
Dr. Ashby
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Re: Draw & Arrow Weight for Bison?
[Re: OUTDOORSMAN81]
#3909286
01/02/13 09:07 PM
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Joined: Aug 2012
Posts: 236
froghunter
Woodsman
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i shot mine with a mathews drenalin at 62 lbs with an easton epic 340 and a 125 grain slick trick.
one arrow is all it took. if you havent looked at a shot placement chart for bison please do. if you shoot it in the arm pit like a deer it will be a gut shot. you MUST line up with the front leg.
good luck and have fun!
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Re: Draw & Arrow Weight for Bison?
[Re: froghunter]
#3909604
01/02/13 10:21 PM
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sprinkler specialist
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i shot mine with a mathews drenalin at 62 lbs with an easton epic 340 and a 125 grain slick trick.
one arrow is all it took. if you havent looked at a shot placement chart for bison please do. if you shoot it in the arm pit like a deer it will be a gut shot. you MUST line up with the front leg.
good luck and have fun! not that i know 1st hand, but what i was reading the other day says otherwise. http://www.adfg.alaska.gov/index.cfm?adfg=deltabison.tips
Do it once, do it right!
The Sprinkler Specialist of Dallas
469-576-1969
skype me @ sprinklerspecialist
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Re: Draw & Arrow Weight for Bison?
[Re: sprinkler specialist]
#3910244
01/03/13 01:17 AM
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Joined: Jun 2006
Posts: 5,925
DFWPI
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i shot mine with a mathews drenalin at 62 lbs with an easton epic 340 and a 125 grain slick trick.
one arrow is all it took. if you havent looked at a shot placement chart for bison please do. if you shoot it in the arm pit like a deer it will be a gut shot. you MUST line up with the front leg.
good luck and have fun! not that i know 1st hand, but what i was reading the other day says otherwise. http://www.adfg.alaska.gov/index.cfm?adfg=deltabison.tips From looking at the chart, I would do as froghunter and line up the front leg. If you do in the "armpit" area, it may not be the best shot. Looking at the pic, the reticle is not in the armpit.
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