high FOC

[canuck4570]

I have read a Trad member post saying that he took a 600  spine arrow,, 60gr. brass insert and 145 point
this arrow with such mass in front won't it be impossible to tune or this hunter does not care about arrow flight

I am new at Trad and would like to go to bed smarter tonight
so could you explain please
Canuck

[canuck4570]

please delete the first one (double post) thanks

[Orion]

That's about 205 grains up front.  Heavy, but workable. Depends a lot on draw/arrow length and bow weight and design, of course.  For example, if the person has a 25-26-inch draw length, the arrow shaft itself will be physically quite light and the spine will act dynamically stiffer. With that point weight, it will come out around 425-450 grains or so, about 10 gpp for a 40-45#bow.  I'm making a lot of assumptions, of course.  Regardless, there probably is a point of diminishing returns, but generally increasing point weight improves arrow flight, and I don't think this combo approaches that point.

[damascusdave]

You left out some important information...draw weight...draw length...arrow length...centre cut of the bow...the Stu Miller calculator is a great way to see how those factors and others affect dynamic spine

DDave

[canuck4570]

my Whip bow is 36# at 29
draw length is 28.5
cut just a bit past centre Dan told me  1/16 inch
my aluminium arrow 1814 X7 has a 80 gr point and is cut at 28.100
and it shoots perfect
so I fought that with 205 gr. it would be super weak
I guess carbon is something different
thanks guys
canuck  apprentice Trac shooter

[Prairie Drifter]

Your 1814 is a .799 spine, a lot weaker than a .600 spine arrow.

[riddleofsteel]

3555 Gold tips with a 100 grain brass insert and 175 grain field points seems to fly like a dart from my 50lb longbow. Of course the arrows are full length. The same arrows fly really well from my 45lb longbow and my 40lb recurve with 145 grain field tips.

I just kept experimenting with inserts and tips until I got good arrow flight.

YMMV

[canuck4570]

OK
my 1814 fly well with 80 gr….
but with 90 gr. was weak
so if I understand correctly
If I choose an arrow with stiffer spine I could play with length and points weight
and the reason I can not do this with mine is that it is at the minimum stiffness for my draw length
getting there thanks
canuck

[canuck4570]

forgot to ask my arrow are at 10.9 FOC

is it good enough for accuracy

I have shoot my bow only at 20 feet in my garage hope to go to the range soon to see at 20 yards

[riddleofsteel]

heavy arrows penetrate better

some bow makers require a certain weight per inch for warranty

I am going to shoot the heaviest arrow my bow will shoot reasonably flat and most of that weight will be up front

[canuck4570]

penetration …. I know  heavy go through better

that is why I hunt Moose with 550 gr. lead bullet in my .458

will try different arrow and has you say find something that shoot flat but heavy for hunting…..

[Easykeeper]

There's nothing wrong with a .600 and a 2205gr point as long as it's appropriate for the bow.  Like others have said, arrow length, bow draw weight, and amount of centershot have a lot to do with what is appropriate for a particular bow shot by a particular person.

If you want to know for sure what is working for you, bare shaft tuning will tell you...http://www.acsbows.com/bareshaftplaning.html

[canuck4570]

all the pieces of TRAD are getting together I used to read and it was chinese to me

but one good thing I have noticed is shooting in my garage with a bare shaft corrected a lot of little bad habit while shooting my bow
this is a arrow according to 3 rivers spine calculator is OK
my arrow use to go in crooked  (weak) , corrected my release I was plucking than after I had up and down on the target so got myself a good anchor point and bingo….. quarter size dot is in danger at 20 feet
having a lot of fun…..
but it is from the help of this forum…..