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short draw chrono results
bassman211:
150 fps is plenty fast to kill a deer with a 400 to 450 gr arrow. I have mentioned this before on here , but it bares mentioning it again. Just this year my son killed a nice buck with one of my horse bows. It chronied 135 fps with his bow arrow combo. It is a string follow bow. He shoots it accurate at 15 yds. He killed the buck at 11yds. The arrow penetrated 11 to 13 inches in the vitals, and the deer expired with in 60 yds. Shot placement trumps speed ,but when you have both you have a real winner.
bradsmith2010:
yes that deer was better test than a chrono,, (SH)
thank you Jawge and Badger,, Im gonna post some more results going over the notes now
Selfbowman:
--- Quote from: bradsmith2010 on December 09, 2022, 12:05:08 pm --- a few threads ago some expressed interest in short draw performance,, I took some notes making bows a while back,,and found sometimes the shorter draw shoots harder than some would think so am looking at my notes to post a few results,,,I did find that shooting the bow through a chrono even at very short draws gave me a good indication of what a bow might do at desired draw,,
my first example is from 2016,, its an osage bow,, stave bout 10 years old,, length 69 inches,, intended draw for a friend(jeffer) 29 or 29 1/2,,, I posted this bow but cant remember the name of the thread,,it says in my notes the stave was holding 3 to 4 inches of reflex,,
ok first test the bow was 44#@20 inches,,,148fps with 480 grain arrow,,,
then as I tillered it out,,49#@22 inches 156 fps with 486 grain arrow,, you can see the bow shooting harder with increased power stroke,, ok at 24 inches of draw,,53#@ 24 inches and 486 grain arrow 167 fps,,,
ok even though the bow is really to long for a short draw,, it is showing that it could shoot a hunting weight arrow very well,,at this point I put a rawhide back on the bow,, and it still performed very well out to the 29 inch draw,,but could have made a nice shooting bow from 24 inches out,,, I have found that alot of bows in the tillering process start to shoot really well once to 24 or 25 inches of draw,, and at that draw are under very little strain.. or not taking much set,,, ok thats the first example I have some more notes of some sinew bows,, that I will post later,, if anyone can tell me how to find that post I would like to see it,,
I wanted to add, that alot of the time we are disappointed in the results,, its not because of the process or skill,, but wood can vary sometimes and its about the material,, or string,, or moisture content or other factors,, not the process or skill,, this stave is a great example,, the natural reflex really helped ,,,Im not sure if heated in reflex is as effective,, anyway,, just saying for new guys, dont be so hard on yourself,, guys getting consistant great results have worked decades,,,to achieve that consistency,, and know how to pick wood that will do it,, :)
--- End quote ---
All true Brad.
Selfbowman:
Steve I liked your design on the short bow your building.Ive found the longer bows do better with the added draw length in the broadhead distances. But in flight Short bows seam to Do better. Steve it might have something to do with what we have noticed in the past where set starts raising its ugly head at about 22-24”. So if we make the short bow with no set and put a light arrow in it the Majic happens. I have been after flight records for years with the longer bows to no avail. So this next year my flight bows are going to get shorter. Please keep the results coming.
mmattockx:
Thanks to Brad for posting that info, it really helps to build up the knowledge base with actual numbers on these things.
Mark
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