Spined arrows, archery shoots

[mzombek]

First question, what is the difference between hand spined arrow and electonic spine? Are the close in weight?
Second question, what happened to the section on archery shoots? It has been awhile since stopped in.
Thanks for all of your help

[Gordon Jabben]

Machined spine doesn't take the grain orientation into account.  Hand spined arrows do.  I haven't found but a pound or two difference anyway.

[Ari_Bonn]

The more advanced ones test spine on correct grain orientation and even print the spine and grain weight on em.