am i underspined?

[LeeMajors]

im 6'5" 31" draw 390fps 73lb pull and 100grain tips

390fps eh?  Did you mean 290?

[bowjunkie]

my bad 290

[RadSav]

It's the internet.  I would have stuck with 390fps and defended it till my last breath   Now I see why you are on H-W.  You are too dang honest for Archerytalk

[LeeMajors]

I was thinking I was doing good with 301 fps then you scared me!

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[bowjunkie]

thats 290 fps with a 750 grain arrow

[RadSav]

thats 290 fps with a 750 grain arrow

That's better!!!

[earlmarne]

holy crap i had to move my rest like half an inch to broadhead tune.seems wierd when i had bareshafts hittin with my current tune.but damn all this help has my sight picture so much more steady.

[windygorge]

shouldn't have to move anything except sights.
in a nut shell, here's what i do.  others do different, but this is my 

1.  paper tune.  if your shooting drop away rest, you should be shooting darts in the paper.  if you don't have a drop away, i suggest getting one.  makes life way easier

2.  sight in your bow

3.  bare shaft test.  get your bare shooting same as fletched.  do this test to 20 yards

4.  readjust sights as required.

5.  do all the above and you are good to go. 

with your draw length and other variables, your FOC of your arrow might be weird.  Let Rav figure that one out for you.  i will screw it up if i do.  FOC is important for arrow flight stability.

[earlmarne]

well,i got my arrows back from whitetail plus yesterday with my new phathead broadheads .i decided to download eastons tuning guide n start from scratch.within a couple hours ive got my rest back closer to center shot n got my broaheads n bareshafts n fieldpoints all grouping together out to 38 yards so far.im really happy.on a side note,these phatheads n heavier arrows are smashing stuff.i just got a rhinhardt block bout 2 months ago n my arrows are coming out the back of it.i wonder if this constitutes a new block?one thing though.these phatheads are louder then my shuttle ts,not too worried about it though.i also miss my target at first with a bareshaft at 20 yards n went through my wheelbarrow,the arrow is in great shape still due to the footings that got installed.thanks guys for all your help.now i just got to wait for my black gold ascent n vengeance head to get here.