New Army "Caliber Configuration Study"

[Tony Williams]

I'm thinking if we have a Grendelized M855A1 that it would have a similar form factor to the GS Custom 6.5 112gr, perhaps a bit lighter if the steel core is less dense than copper.

Forgive me for being picky, John, but the Form Factor is unaffected by bullet weight or the density of the materials - it is only concerned with the shape. The weight of the bullet is taken into account in calculating the Sectional Density which is then multiplied by the FF to get the Ballistic Coefficient.