Composite projectile barrel

1. A firearm barrel comprising:

an inner layer; and

a shroud;

wherein the inner layer surrounds a concentric bore and has an outer diameter;

wherein the inner layer comprises an unperforated core that directly surrounds the concentric bore and a perforated core that surrounds the unperforated core;

wherein the shroud surrounds the perforated core; and

wherein the perforated core is comprised of a plurality of equilateral triangular cutouts and a plurality of circular cutouts in a grid pattern that is configured to form structural ribs between the unperforated core and the outer diameter of the inner layer;

wherein the grid pattern is comprised of a repeating and overlapping series of arrays;

wherein each array is comprised of a central circular cutout surrounded by six equally spaced equilateral triangular cutouts, each of the equilateral triangular cutouts having three tips;

wherein a circular cutout is situated at each of the three tips of each equilateral triangular cutout; and

wherein each circular cutout is aligned with an axis of symmetry of each of the equilateral triangular cutouts.

2. A firearm barrel comprising:

an inner layer; and

a shroud;

wherein the inner layer surrounds a concentric bore and has an outer diameter;

wherein the inner layer comprises an unperforated core that directly surrounds the concentric bore and a perforated core that surrounds the unperforated core;

wherein the shroud surrounds the perforated core; and

wherein the perforated core is comprised of a plurality of equilateral triangular cutouts and a plurality of circular cutouts in a grid pattern that is configured to form structural ribs between the unperforated core and the outer diameter of the inner layer;

the barrel having an outer circumference;

wherein each of the equilateral triangular cutouts has a floor and three contiguous side walls;

wherein the floor of each equilateral triangular cutout is concentric with the bore; and

wherein the contiguous side walls of the equilateral triangular cutout are perpendicular to the outer circumference of the barrel.

3. A firearm barrel comprising:

an inner layer; and

a shroud;

wherein the inner layer surrounds a concentric bore and has an outer diameter;

wherein the inner layer comprises an unperforated core that directly surrounds the concentric bore and a perforated core that surrounds the unperforated core;

wherein the shroud surrounds the perforated core; and

wherein the perforated core is comprised of a plurality of equilateral triangular cutouts and a plurality of circular cutouts in a grid pattern that is configured to form structural ribs between the unperforated core and the outer diameter of the inter layer;

wherein the floor of each circular cutout is shallower than the floor of each equilateral triangular cutout.