I'm using the Lyman Archer's balance-type scale.

I'm with Range on the spine issue guess. I've got a half dozen ACC's sitting on the bench waiting to go hunting so in another couple months this will no longer be an issue. I'd use the ACC's for 3-D but on occasion I've been known to find the 11 ring and invariably someone will bust my nock or split a shaft. That's all part of the game, but I don't think I could stomach watching someone break a $12 arrow.