Recommendations for my elk arrow (test pics pg 3)

[Arctic Hunter]

Build the strike plate out or go up in spine. Ive found moving or adding string silencers can make a difference as well. That is assuming you want the heavier arrow. I would think the any of those arrows would do fine.

[halfseminole]

Miniscule changes still equal changes, but yes momentum would adequately describe it.  Fifty to a hundred grains isn't out of the realm of possibility, and nobody would dispute that change being inconsequential.  However, spine is not my area-there's no real concept of it in the style that I practice.  Arrow weight, length and balance are counted, but they aren't ever tested for spine.  It certainly makes for easier math in building arrows.