Joe D.

I have a question, can/why do certain spines shoot differently out of one bow but not another?

Rangeball

Spine is simply a measure of how much an arrow flexes under a given load.

Compare two bows, one that stores and releases low energy and on high. The arrow sees the release of stored energy as a push against it's rear end. The lower energy push won't cause it to bend much, the higher will.

Matching the perfect flexing to a particular set up (bow, rest, release, finished arrow weight, tip weight, etc) yields the best results.

BGfisher

What they said, And I don't think I'd be taking much advice from Larry anymore either.

Rangeball

This reminded me of my first experience with the WB. I went into the "pro" shop really wanting one when they first came out, "pro" slapped one on, lazered it all up good and straight on his bench, walked over the the range, and from 20 yards zipped one through the paper, perfect bullet hole. Slapped himself on the back, another bow done tuned up good...

I took the bow from his hand, walked up to the paper, and from 5' away shot the most gawd awfullest ugly tear you can imagine. I looked at him, and he told me "you can't paper tune a bow that close, you gotta give the arrer time to flex and straighten out"

I said thanks, paid him, and once home in minutes had a perfect tear from 5'...

My guy's name wans't Larry... There's more than one of these "pros" out there...