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What does GPI stand for?

GPI stands for Grains Per Inch (arrow construction)

This definition appears very rarely and is found in the following Acronym Finder categories:

  • Business, finance, etc.

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Other Resources:
We have 189 other definitions for GPI in our Acronym Attic

Samples in periodicals archive:

2 grains per inch and straightness tolerance is an impressive plus/minus .
Currently I'm shooting 27-inch Carbon Express Terminator Hunter arrows weighing 12 grains per inch (gpi).
Game Tracker has three of the most interesting design innovations in carbon: knurled inserts that stay in place; 70 and 100-grain screw-in target points that are slightly larger than the shaft, aiding target extraction; and weight tubes that allow the addition of 2 or 3 grains per inch to your shaft, which raises kinetic energy.
The shaft spec button gives you the size, type (aluminum, carbon, combination), maximum length, outside diameter, grains per inch, wall thickness, inside diameter and spine.