Original Buckmaster KE question
10-09-2002, 10:00 AM
#1
Nontypical Buck
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Join Date: Feb 2003
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Posts: 2,994
Original Buckmaster KE question
Does anyone know off hand the k3 produced by this bow at a 28" draw length? My brother has one, want's to shoot mechanicals, but I don't know his arrow weight or fps. Can someone give me a range? He's shooting cabelas ics carbons at 28", I think.
10-09-2002, 11:36 AM
#2
Join Date: Feb 2003
Location: Miami FL USA
Posts: 208
RE: Original Buckmaster KE question
Range,
Without a weight on the arrows and a speed its very hard to give a decent estimate there are too many variables. Once you have that info you can just plug it in over at www.bowjackson.com.
Aim Hard!
Without a weight on the arrows and a speed its very hard to give a decent estimate there are too many variables. Once you have that info you can just plug it in over at www.bowjackson.com.
Aim Hard!
10-09-2002, 01:43 PM
#3
Nontypical Buck
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Join Date: Feb 2003
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RE: Original Buckmaster KE question
I agree, however I was hoping someone would have played with one of these before and have a clue. Doesn't have to be exact, and since a bow can only put out a range of so much energy, I was hoping...
10-09-2002, 02:20 PM
#4
Join Date: Feb 2003
Location: Miami FL USA
Posts: 208
RE: Original Buckmaster KE question
Range,
I had an original Buckmaster which was shot at 29" of draw at 70# with a 350grain arrow. It shot right at 290fps and the KE was about 65#. However without knowing your brothers arrow weight and the speed your only guessing. I guess you could compute the arrow weight then we can have something to go on. A lot of the arrows speed depends on how the bow is setup as you know, ie. the type of rest, how much stuff on the string ect, ect, ect. The range of performance that you mention is very wide, just the difference in 1" of drawlength is about 10fps and 100grains of arrow weight is about 20-25fps. Not so easy, but the differences cam make quite a bit of difference in the KE value.
Aim Hard!
I had an original Buckmaster which was shot at 29" of draw at 70# with a 350grain arrow. It shot right at 290fps and the KE was about 65#. However without knowing your brothers arrow weight and the speed your only guessing. I guess you could compute the arrow weight then we can have something to go on. A lot of the arrows speed depends on how the bow is setup as you know, ie. the type of rest, how much stuff on the string ect, ect, ect. The range of performance that you mention is very wide, just the difference in 1" of drawlength is about 10fps and 100grains of arrow weight is about 20-25fps. Not so easy, but the differences cam make quite a bit of difference in the KE value.
Aim Hard!
10-09-2002, 04:00 PM
#6
Join Date: Feb 2003
Location: Manitowoc WI USA
Posts: 79
RE: Original Buckmaster KE question
RangeBall-
Here is a pretty good approximation of what you have just by running any old arrow through 'The Archery Program' because we all know now that a bow at a given draw length and weight only stores x amount of energy. I ran 60,65,70 pounds @ 28" draw and a beman ICS 340 for test purposes.
60lbs= 49.7 ft/lbs KE
65lbs= 53.7 ft/lbs KE
70lbs= 57.9 ft/lbs KE
At this draw length and the listed poundage you can expect somewhere real close to these figures no matter the arrow is.
If the bow is actually 29.75(AMO) draw....which it just might be, here is what you can expect.
60lbs= 60.4 ft/lbs
65lbs= 65.6 ft/lbs
70lbs= 70.8 ft/lbs
I hope this has helped your cause....
Happy Shooting!
>>>------Tony Virnoche------>>>
>>>---The Archery Program--->>>
Here is a pretty good approximation of what you have just by running any old arrow through 'The Archery Program' because we all know now that a bow at a given draw length and weight only stores x amount of energy. I ran 60,65,70 pounds @ 28" draw and a beman ICS 340 for test purposes.
60lbs= 49.7 ft/lbs KE
65lbs= 53.7 ft/lbs KE
70lbs= 57.9 ft/lbs KE
At this draw length and the listed poundage you can expect somewhere real close to these figures no matter the arrow is.
If the bow is actually 29.75(AMO) draw....which it just might be, here is what you can expect.
60lbs= 60.4 ft/lbs
65lbs= 65.6 ft/lbs
70lbs= 70.8 ft/lbs
I hope this has helped your cause....
Happy Shooting!
>>>------Tony Virnoche------>>>
>>>---The Archery Program--->>>
10-10-2002, 07:56 AM
#7
Nontypical Buck
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Join Date: Feb 2003
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Posts: 2,994
RE: Original Buckmaster KE question
Thanks Tony. I was suspecting he is shooting sub 60# of ke, your examples are helping me confirm my suspicions. He plans to shoot Wasp Jackhammer SSTs, with the 1 3/4" cut. I think he's borderline on ke, and should use steelheads, but kids will be kids 
.
We'll see what kind of penetration he gets.
.We'll see what kind of penetration he gets.
