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short draw chrono results

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bradsmith2010:
   ok this is a sinew bow I started in 2015 and did shoot it at 20 inches of draw,, 56 inch bow
it was about 50#@ 20 inches and would shoot a 498 grain arrow 143fps
then at 22 inches and 53# with dacron string 153 fps,, and with fast flight at that draw 158 fps,,
56# at 23 inches and 166 fps with same arrow,,
I tillered this bow out to 26 inches and it shot a 500 grain arrow 180 fps(9.09gpp) ,, it was 55#@26 inches,, this was in 2017 that I re tested,, but I have found once a sinew bow settles in, it usually shoots about the same unless you put it in front of the swamp cooler or it gets rained on,, :) 
   some of the 46 inch bows I exerimented with shot really well at the short draws,, so can see why some were used for short range bufflalo hunts and such,, I could get a hunting weight arrow to go 170 or 180,, enough to kill a buffalo with less than 60# draw,, I didnt experiment with lighter weights much, but feel like a 40# 25 inch draw bow could easily shoot a 400 grain arrow 160 fps,, probaly more with sinew and reflex,, I might try that next time,, I just hate it when people get discouraged with their(short draw),, a Sioux warrior would have said your draw was to long at 25 inches, isnt it all relative,, (-S
     I will add shortly after that last test I was so happy with,, the sinew fell off that bow,,well the bow was not broken,, so I bent recurves into it and was going to sinew it again,, still sittling there waiting for me,, it will be interesting to see if the recurved version will out shoot the straight tip version,, right,, :NN
   

StickMark:
for us cheapskates, this chrono data is welcome.

bradsmith2010:
yes no need to get one,, if you have a friend with one,, :D

StickMark:
Yes, that is very true...
and, as well, Brad, you mention hunting weight arrow, and I think this is maybe Badger's suggested formula for testing speed on shorter draws, but I recall this formula:
(your specific draw for the bow divided by 28) x bow poundage x 10,

so a 25" bow at 54 is (25/28) X 54 x 10 = 482 grains.

bradsmith2010:
I think the arrow shot out of the 23 inch draw bows was about 460 grains,, i didnt keep good records on that,, but it was about 23 iches long,,and was I think hickory or dogwood ok it was maple,,,,so it was heavy for the length,, but when you think about it,, at 23 inches you start to get some good performance,,especially if the bow is short, Im really awful at math,, so I just go with what the chrono tells me,, when the number comes up.... I go ohhh,, thats nice,,
anything over 400 grains going fast,, is a hunting weight arrow for me,, 170s,, the 23 inch arrows I made from dogwood were in the 500 grain range

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