need some help on my set up?

[Stiks-n-Strings]

how much arrow length increases or decreases spine +/- 5 lbs when removed.. 1/2", 1" etc.
Example if I have 29.5" 50 Lbs spined aluminum arrow and remove 1/2" how much would that stiffen the spine if any?
And also If I add point weight to the same arrow 29.5 how much point weight does it take to affect the spine weight +/- 5 lbs?
I am trying to get set up for turkey and deer with a typical 3 blade 125 grain broadhead for turkey and a single bevel head for deer but I can't find any single bevel heads in this weight, all the single bevels that I find are heavier than 125 grain.
What to do? What to do?
My bow is tuned about as good as I can get it and shooting great with 29.5" 2016 legacy's, 125 grain heads, 5" 3 feather. Bare shafted... great groups. Broadhead tuned... great groups.
I want to shoot a single bevel for big game but don't really need a heavier head for this set up and was wondering if I go a little heavier single bevel and shorten my arrows .5" can I equal it out in the spine of my arrows so they fly as close to same as possible.  Or just shoot the same heads for both quarry?
Thanks Kris

[Stiks-n-Strings]

If it makes any difference I'm shooting a bear super mag 48" recurve.
Kris

[Killdeer]

Have you maybe considered a 100 grain Grizzly and a 30 grain aluminum adapter?

Killdeer

[Stiks-n-Strings]

Killdeer,
Are you talking about a glue on with the adapter? Would the extra 5 grains affect my spine or anything?

[Steve O]

NO!  5 grains is not going to make any difference.  A dollar bill weighs 16 grains.  I'd not worry about the single bevel two blades and shoot the 125g 3blades I had tuned perfectly.

[JimB]

On some 2016's and 2018's I was tuning,an inch equalled roughly 25 to 30 grs of point weight.If yours act the same,1/2" might equal about 15 grains.You can also build out your side plate a little to make your arrows act stiffer,