madoktor1
Board Regular
Fear The Reapers!!!
Posts: 430
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Post by madoktor1 on Jan 17, 2009 18:03:31 GMT -5
this is what happend when i was setting my 40 yard pin with my bear bow 55lb draw weight 29in arrow and a field piont at 45 yards. so i think 55lb is enough for any thing i am going to shoot This is on Docholladay's forum.(tennhuntandfish.com) I think this bodes well for a low DW setup. Doc and I have had several discussions about what is necessary and what is overkill (he shoots low DW and low DL and my setup is in my signature). I shoot the setup I do one because I can draw 70# and more and two because I have a combination of hunting areas where I have opportunities for long shots and I practice long shots. The longest mark on my old bow was 65 yds. and the longest on my current bow is 50 yds. so I like to keep my KE high and chose my arrows accordingly. I have a 100 gr. difference in the two arrow setups I shoot with a 30 fps. difference in speed but only a point or two difference in "calculated" KE. I am very interested to see the outcome of this experiment and will probably have an "I told you so" coming from Doc (in good fun and friendship of course). I will be watching closely. Thanks for the time and effort Doegirl and stilllearning, that you will put in to this and good luck.
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royden
Senior Board Member
Posts: 1,349
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Post by royden on Jan 17, 2009 19:27:58 GMT -5
I don't mean to sound cavalier about bowhunting these magnificent animals. Believe me, if I have any doubt of my abilities or equipment, I will not carry forth.. didn't mean to step on your toes doegirl ... just that you may not be able to say "I can kill a big bull" because you shot a cow just fine. I agree that going on such a hunt will give some great feedback ... just don't want to take whatever data comes back too far. Personally I believe that with correct shot placement both you and stilllearnings rigs will both perform well: you will have more arrow arc and still will have less ... but at 30 yards who cares? Keep going as planned and lets see what happens. Thanks.
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Post by BT on Jan 17, 2009 21:53:53 GMT -5
DOEGIRL
Ashby:
TO ACHIEVE .57 POUND SECONDS OF MOMENTUM: (The momentum of the "Best" performing arrow/broadhead combinations in study, all of which had broadheads of 3.0 mechanical advantage):
A 550 Grain Arrow must reach a velocity of 234 Ft./Sec.
A 450 Grain Arrow must reach a velocity of 285 Ft./Sec.
A 350 Grain Arrow must reach a velocity of 367 Ft./Sec.
So.... Where are you going with this rig based on Ashby's theory?.
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Post by BT on Jan 17, 2009 22:04:01 GMT -5
www.handloads.com/calc/quick.aspPretty neat calculator Note** This can be used for archery and the Taylor KO number is a great way to reference the change that draw length adds to the total number relating to stored energy
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Post by stilllearning on Jan 18, 2009 9:00:28 GMT -5
I am going to say that I feel out of place a bit with this. I am doing this for selfish reasons. one I want to know what the ability of the bow I will be shooting is and how to match that with me. I will try different things, and alot of those ideas will come from the forum here. I will be shooting a bow that BT has set up and managed to get the most speed he can out of as I don't have the knowledge base to do that. Thank you for that help BT. I look forward to some results and just to see what happens.
I honestly believe this will change no ones minds about the way they shoot and have there rigs set up. What I do believe it that it will help someone like me to figure out which of these two ways is best for them. I hope to have the bow all set up and in my hands within the month. but then again we will see.
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Post by Doegirl on Jan 18, 2009 9:37:34 GMT -5
www.handloads.com/calc/quick.aspPretty neat calculator Note** This can be used for archery and the Taylor KO number is a great way to reference the change that draw length adds to the total number relating to stored energy I think the momentum calculator is in Kilogram/sec on that particular calculator. The BowJackson one is pounds. home.att.net/~sajackson/ballistics.htmlI got .15 on handloads and .47 on BowJackson.
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Post by BT on Jan 18, 2009 10:02:46 GMT -5
www.handloads.com/calc/quick.aspPretty neat calculator Note** This can be used for archery and the Taylor KO number is a great way to reference the change that draw length adds to the total number relating to stored energy I think the momentum calculator is in Kilogram/sec on that particular calculator. The BowJackson one is pounds. home.att.net/~sajackson/ballistics.htmlI got .15 on handloads and .47 on BowJackson. Yes, is in Kilogram/sec .... Stilllearning will love it Any idea on how are you gong to get your system up to the required .57?
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Post by Doegirl on Jan 18, 2009 10:08:09 GMT -5
I think the momentum calculator is in Kilogram/sec on that particular calculator. The BowJackson one is pounds. home.att.net/~sajackson/ballistics.htmlI got .15 on handloads and .47 on BowJackson. Yes, is in Kilogram/sec .... Stilllearning will love it How are you gong to get your system up to the required .57? Ashby himself can't even achieve 0.57 ;D ;D ;D. Really, the 82lb longbow he uses in the 2007 updates he gets 0.52. I forget what weight arrow he was using. I don't think it's possible to get .57 out of my setup...
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Post by BT on Jan 18, 2009 10:29:06 GMT -5
Yes, is in Kilogram/sec .... Stilllearning will love it How are you gong to get your system up to the required .57? Ashby himself can't even achieve 0.57 ;D ;D ;D. Really, the 82lb longbow he uses in the 2007 updates he gets 0.52. I forget what weight arrow he was using. I don't think it's possible to get .57 out of my setup... Oh come on now! ;D Build the speed up and increase the arrows weight. No problem By the way....whats the arrow head and weight and is that part of the 450gr? What happened to 600?....can you stuff the shaft just for fun and see what the end result is on speed loss and calculated MO/KE ? Yes...we can probably guess that but if you can do it, why guess.
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Post by Doegirl on Jan 18, 2009 10:32:07 GMT -5
Ashby himself can't even achieve 0.57 ;D ;D ;D. Really, the 82lb longbow he uses in the 2007 updates he gets 0.52. I forget what weight arrow he was using. I don't think it's possible to get .57 out of my setup... Oh come on now! ;D Build the speed up and increase the arrows weight. No problem You're right, I might have to jack up the poundage slightly, but if I work up to a 700+ grain arrow, I should be able to hit .57
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