How deep does a .22 LR penetrate Aluminum 6061?

At the muzzle, a representative .22 LR load penetrates approximately 7 mm (0.3 inches) into aluminum 6061.

What is the impact energy of a .22 LR?

This .22 LR load carries about 142 joules (104 ft-lb) at the muzzle.

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Will a .22 LR Penetrate Aluminum 6061?

Yes — defeats a 6 mm aluminum 6061 barrier

Penetration depth

7 mm (0.3″)

Impact velocity

330 m/s (1083 fps)

Muzzle energy

142 J (104 ft-lb)

Bullet behaviour

Intact

Fired at the muzzle, a representative .22 LR load (2.6 g, FMJ, 330 m/s) reaches roughly 7 mm (0.3 inches) into aluminum 6061. That is enough to defeat a typical barrier of this material — treat anything behind it as exposed.

About Aluminum 6061

Aluminum plate (~6 mm), as found in light vehicle and aircraft skins.

.22 LR against other materials

Material	Depth (mm)	Depth (in)
Red Brick	49 mm	1.9″
Concrete	26 mm	1.0″
Tempered Glass	11 mm	0.4″
Steel A36	2 mm	0.1″
Steel AR500	1 mm	0.0″

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.22 LR vs Red Brick .22 LR vs Concrete .22 LR vs Tempered Glass .22 LR vs Steel A36 .22 LR vs Steel AR500 .22 LR vs Pine Wood .22 LR vs Oak Wood .22 LR vs Kevlar NIJ III 9mm Luger vs Aluminum 6061 .45 ACP vs Aluminum 6061 .40 S&W vs Aluminum 6061 .380 ACP vs Aluminum 6061 .357 Magnum vs Aluminum 6061 .44 Magnum vs Aluminum 6061 10mm Auto vs Aluminum 6061 5.56 NATO vs Aluminum 6061

Will a .22 LR Penetrate Aluminum 6061?

About Aluminum 6061

.22 LR against other materials

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