13.3 foc could it cause problems

[waterfx]

was wondering what kinda problems this foc may invoke any help much appreciated

[gibblet]

pretty sweet for broadheads

[KodiakArcher]

Depends on how it got that way. If it's because you're shooting an NAP African head with 1" fletchings, you've got all kinds of problems in store. We need more details as to the head you're using, the fletchings and the arrow length.

[waterfx]

ok 30 inch gt pros 5575,s 125 grain silverflame broadhead or field tip two in blazers does that help foc was determined on the websight

[Arthur P]

You need tomeasure your balance point and do the math. The website is based on 'standard' vane weights. Blazers are considerably thicker and heavier than a regular 2" vane. Your FOC will not actually be as high as the program says.

Even if itIS over 13%, it won't cause any problems whatsoever. On the contrary, the high FOC will make the arrow more stable and eaiser to tune, assuming it spines out right. Many guys like to talk about arrows taking a 'nose dive' with FOC that high, but whenever you hear that you need to spray your BS repellent.

Trajectory won't be quite as flat as it would be with a lower FOC, but it's just like comparing trajectory ofarrows where one weighs 40 grains or somore than another. The arrow is NOT going to fly nose down. It is NOT going to nose dive past 20 yards. It is NOT going to be plowing dirt 20 yards before the same arrow with8% FOC will.

FOC that high wouldn't be my first choice for shooting spots at 90 meters, but for a hunting or 3D arrow, no sweat.

[Straightarrow]

I consider an FOC in that range to be desirable. Just make sure your arrow spine is stiff enough. A 30" 5575 with a 125 gr head, probably can't be shot much over 50 lbs without the shaft being weak.

[BobCo19-65]

13.3 Sounds like a very good FOC to me. As long as everything is tuned up.

[waterfx]

thanx guys and stright arrow the spine is good for those up too 70# I am shooting 60 so tha part should be great thanx again guys

[nodog]

Best way to know for yourself is make up some test arrows of different foc's and shoot them. I have some just the same as you described but haven't put a 125 on. Think I'll let some fly.

[nodog]

2 arrows one with a 125 and the other with a 100 thunderhead. 5575 gt hunter shaft 2" blazers. 30 yrds. less than 1/2 apart. 40 yrds touching each other. The Art's have it.