RE: How important is shaft straighness for hunting??
From what I gather from everyone is........if it shoots straight, shoot it......
.006 or .001 means nothing when it is stated from a manufacturer (as Len pointed out with his "bad" batch from the factory). Arrow construction is the most important thing. HOW the arrow is put together (epoxies, carbon quality, etc.) is at least as important as straightness.
I've shot Snuffers on .006 arrows and on .003 arrows and not had a bit of problems grouping out to 60-70 yards. The only real difference I've seen is that out of a dozen I might get 8 "good" (spine wise) arrows as compared to 6 in the .006 arrows. I've never lost an elk or deer due to arrow failure (how would you REALLY ever know?)....
I would venture a guess that a dozen spine "grouped" .006 arrrows would out-shoot "stock" .002 arrows. Anyone agree?