[SHPoet]

No. You will be fine. Just for the record, what is the weight of the broadheads are you using?

 

[veritas.archangel]

You're good, but actually closer to being underspined than overspined.

 

[HeavyUser]

No. You will be fine. Just for the record, what is the weight of the broadheads are you using?

100 grain

Was thinking about going 125 to balance things out more?

 

[BigXX78]

100 grain

Was thinking about going 125 to balance things out more?

You're fine, and you'd be fine going with 125's too. You could even shoot 150's, if you wanted to.

 

[D J A X]

You're good, I shoot nearly exact same specs (draw weight , arrow length ,lbs) and 300s shoot solid with 100s on front. For what it's worth I also shoot 340s but cut down to 27".

 

[veritas.archangel]

Draw length is 29", pulling back 70lbs, arrow length is 28.5"s, total arrow weight is 448-450 grains.

Arrow spine is 300.

Based on what I'm reading I should have been places at 340 ... no?

The other question would be what bow are you shooting? Big difference between the needs of a Bowtech Solution SS in those specs and a PSE Omen. A more aggressive, speed bow will need a stiffer spine than a super smooth drawing, slower, bow.

 

[doulos]

Agree with most here.You should be Ok. I shoot .300 spine sometimes with a 60lb bow. But I use heavier inserts and broadheads. Im of the mind its hard to be overspined if the bow is tuned well.
But like veritas said. What bow are you shooting?

 

[Mossy-Back]

Depends on the bow. My SR6 (aggressive cams) is at 62 pounds and 29" draw and I'm shooting a 27" 300 spine with a 125 grain head and 23 grain insert. It tunes better than a 350 spine for me.

 

[Trevi]

Draw length is 29", pulling back 70lbs, arrow length is 28.5"s, total arrow weight is 448-450 grains.

Arrow spine is 300.

Based on what I'm reading I should have been places at 340 ... no?

That’s my exact arrow at same draw weight and shoots like a laser.

 

[HeavyUser]

That’s my exact arrow at same draw weight and shoots like a laser.

Only thing that made me question the spine was my broadheads are flying left of my fp at 40yrds and greater. I'm gna shim the top cam right tomorrow as I already tried moving the rest which cleared up 20-30yrd bh to fp groupings.

Thanks for all the responses everyone, sounds like my arrow is fine.

Shooting an RX7 U, slow smooth 70lber lol.

 

[Dale_B1]

Are you having a problem? If no then there isn't a problem. No your not over by any stretch.

 

[mushpot]

Draw length is 29", pulling back 70lbs, arrow length is 28.5"s, total arrow weight is 448-450 grains.

Arrow spine is 300.

Based on what I'm reading I should have been places at 340 ... no?

Use this calculator before your arrow build: Target & Hunting Arrow Selector - Easton Archery
I like to lean towards the stiffer of the options. you can always add point weight.

 

[jbm5095]

Depends on the bow. My SR6 (aggressive cams) is at 62 pounds and 29" draw and I'm shooting a 27" 300 spine with a 125 grain head and 23 grain insert. It tunes better than a 350 spine for me.

My SR350 @ 28” of DL/ 61# likes a 300 spine with 150 up front cut 26” C to C better than a 350 with same specs.

My Solution SS @70 # likes the same 300 with 197 up front.

I believe you’re correct, depends on cam.

Shoot what your bow likes/wants.