how do you figure your arrow grain weight

[bigtim6656]

i have carbon force dominator 200s arrows 100 gr broad heads and field pointswith quikspin fletchs how do i know if this is enough or not enough for my 68 pound bow

i thought the 200 in the carbon force dominator 200 is the arrow weight or am i wrong

[Mathewsboy]

your wrong. I'm finding the grains per inch.. hold on.

[brucelanthier]

Are you asking about how to determine correct spine or arrow weight? 200 sounds like a spine rating.

[mauser06]

wrong! 200 is not weight!!

figure out the GPI of your shafts (grains per inch) could be on the shaft or found online...

multiply the GPI by the shaft legnth(in inches) measure your arrow with a tape measure from insert to groove of nock.

then add in fletching weight, point weight, insert weight, and nock weight and that will give your your finished arrow weight.


so long as you are above 5 grains per pound of draw weight (IE 350gr arrow for a 70lb draw weight) you are FINE so long as they are spined properly.....

[GR8atta2d]

Big..go to Easton arrows website and read up on all the same questions your asking!

[Finch]

ORIGINAL: mauser06

wrong! 200 is not weight!!

figure out the GPI of your shafts (grains per inch) could be on the shaft or found online...

multiply the GPI by the shaft legnth(in inches) measure your arrow with a tape measure from insert to groove of nock.

then add in fletching weight, point weight, insert weight, and nock weight and that will give your your finished arrow weight.


so long as you are above 5 grains per pound of draw weight (IE 350gr arrow for a 70lb draw weight) you are FINE so long as they are spined properly.....

Ditto!

[Mathewsboy]

They are 6.7 grains per Inch..

You need to SHOOT at LEAST 340grains of weight with everything included at 68lbs..

So add it all up, Nock, feathers/platics, arrow, and broadhead, and that is your TOTAL Arrow Weight in Grains..

[bigtim6656]

Arrow weight per inch 6.7 grain 180.9 for 27 inch arrow which mine are 27 1/8

Broad heads 100 grain for muzzy broad heads

Quikspin four inch 12 grains each 3 vanes per arrow 36 grain per arrow

not counting the nock and broadhead insert which i do not know the weight of i come up with 316.9 divide by 27 inch arrow i get 11.737 per inch including my broad head and vanes
i am guessing my nock and insert will make up the little extra i need or i can go up to the 125 grain muzzy if you guy think i need to

[Mathewsboy]

You need MINIMUM of 5 grains per LB of bow weight.. so.. 68 * 5 = 340grs

[bigtim6656]

anyone know what the average weight of a plastic nock and a metel insert