RE: Teach me FOC
 

So I gotta ask out of curiosity sake how lgiht was your point and how heavy was the back end on this .89% FOC arrow? I got around .96% with a 40 grain glue in point 3, 8 grain fletchings, GT pin nock and bushing and 28" x cutter shaft.

And cudos to winning several tournaments with that set up...that's impressive tuning and shooting.

RE: Teach me FOC
 

All I have are the 50 grain weights and they do not fit into my Carbon Tech shafts. I am not sure but I thought the 50 and 100 grain PDP weights were more for aluminum shafts due to their diameter so maybe the smaller ones are the ones for carbons?

RE: Teach me FOC
 

I'm shooting a 27" Xcutter shaft (7.8gpp); nock bushing (17.2gr); pin nock (2.8gr); x-vanes at 10gr ea x 3.

So......210.6 on the shaft + 17.2 + 2.8 + 30 is what's behind the tip. Tip is a 50gr. GT Glue in.

I used the GT calculator to figure the FOC.

.89

RE: Teach me FOC
 

Yeah, I must admit Jeff....I'm curious as to what that arrow was as well. I'm simply not sure how you got an FOC that low. Not questioning you or your math skills....but that just doens't sound right.

RE: Teach me FOC
 

GT did the math:D

RE: Teach me FOC
 

Yea I ran that through On target and got 1.46% so it's definately in the ball park of 1%. I guess that shows that FOC is even LESS important than some people think.

RE: Teach me FOC
 

I just used GT's own calculator on their site. I did it again and got .86

It's low as crap whatever it is.

RE: Teach me FOC
 

My understanding is that it is not that important for target shooting but is hugely important when talking about penetration in animals.

RE: Teach me FOC
 

Why would it be imortant? Doesn't KE compute off total arrow weight?

If your bow is tuned....and your arrow is flying true.....why would it make a difference what your 500 gr arrow's FOC was?

Just curious.

RE: Teach me FOC
 

With a higher FOC the arrow is going to be able to take the straighest path through the animal more easily than a lower FOC which would deflect much easier, losing energy along the way.

The KE won't be any different but the loss of KE as it goes through the animal would drop off much faster.

That's just a thought that popped in my head, I don't know if it would actualy be true.:D