Arrow Spine Stiffness Recommendations

[KrisRD]

I recently bought a new-to-me Hoyt Pro Defiant 34 and I am wondering what arrow spine stiffness to go with. I talked to a local shop and they recommended Easton powerflight's with a 340 spine. After researching, I think 300 may be what I need but I'm not sure. Here are the specs:
-70lb draw weight
-30.5" draw length (not including D-loop)
-approximately 31" arrow length
-IBO speed is 325fps
-I recorded real-world speed at 298 fps with a 432 grain arrow

Thoughts? Cheers!

[standsureoutdoors]

Hey Kris,

What weight of boradhead/field point are you planning on running and are you planning on using the standard weight inserts or a heavier brass insert?

[KrisRD]

I will likely stick with the standard insert, 100 grain field point and 100 grain broadhead. I'll likely be using the Thorn archery 100 grain expandable broadhead. Thanks for the help!

[standsureoutdoors]

Hey Kris,

I just ran that info through my software and it shows you being in a 300 spine arrow.

If anything it shows that you would be a hair weak in a 300 but still well within range.

Cheers

[KrisRD]

Thats what I've been thinking as well. I appreciate the help!

[KrisRD]

One more question if you don’t mind... recommendations on a good arrow that comes in a 300 spine? Thinking just carbons over FMJ but any input is appreciated. Thanks!

[Settle&release]

I have the same bow and I shoot Easton axis 5mm 300 spine and they fly great. Better to go stiff than weak.

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[CroPhi]

260 spine with 200 or more grains up front. Look for a mid or lighter weight shaft for better FOC