Rifle vs. Pistol on 1/4" Steel

[terdog]

Those "FMJ's" are quite a bit larger in diameter now, dissipating energy faster.

Pistol rnds don't attain the velocities of rifle rnds. One reason why is the longer barrel, but even shot from a similar barrel ...

You guys believe you want, but I'm not buyin it.

 

[American123]

Those "FMJ's" are quite a bit larger in diameter now, dissipating energy faster.

Pistol rnds don't attain the velocities of rifle rnds. One reason why is the longer barrel, but even shot from a similar barrel ...

You guys believe you want, but I'm not buyin it.

Video is right there... not much to argue. Its a mass and velocity issue.

Same reason why hyper velocity rounds like the 220 swift start out crazy fast, but bleed fps quickly compared to heavier bullets starting slower, but retaining their velocity comparatively for a longer period of time. Simply put, if were talking a 55gr .223 and a 124gr 9mm, the .223 is going more than twice as fast out of the average barrel, but the 9mm is also twice as heavy, and that mass has an effect on the potential penetration. When discussing hollow point ammunition, yes pistol ammo may expand, and that does make it wider and expel more energy in whatever it is passing through, but .223 also tumbles, and when you turn a 55 grain .223 sideways from it tumbling it is much wider than the explanding 9mm hp, and half as heavy.

You are definitely welcome to believe whatever you want. I tend to go with what I see done, and here's a second video showing .223 penetrating less than 9mm.

 

[titsonritz]

Denial - it's not just a river in South America.

 

[Kruel J]

"Penetrate".

Ehhh.....huh huh huh huh

 

[Ironbar]

As the saying goes: a pistol is so you can fight your way to a rifle

That saying is just as ridiculous today as when it was first uttered.

 

[ilikegunspdx]

Hey folks,

Here is the result of today's rifle vs pistol on 1/4" steel. This hunk of metal was taken from an old fireplace insert.

View attachment 645646
7.62x51, 24" barrel, 150gr, 50 yards
5.56x45, 16" barrel, 55 gr, 50 yards
.38 Special, 2.5" barrel, 130 gr, 10 yards
.357 Mag, 2.5" barrel, 158 gr, 10 yards


Really shows the difference between "cover" and "concealment" when facing different firearm platforms.

As the saying goes: a pistol is so you can fight your way to a rifle.

Safe Shooting.

Cool test! I wonder if a 22 tcm pistol would make it through that (2000 fps out of a pistol). Supposed to have better penetration than FN 5.7

 

[The Heretic]

Speed kills

Speed penetrates, but projectile construction also makes a big difference

9mm thru .454

Five Seven

.22 & .17 mag

 

[The Heretic]

Cool test! I wonder if a 22 tcm pistol would make it through that (2000 fps out of a pistol). Supposed to have better penetration than FN 5.7

22-Caliber Centerfire Self-Loader Shoot-out: FNH Vs. Rock Island - Gun Tests

In an intriguing and extensive match-up, we pitted two handguns chambered for hot 22-caliber bottlenecks against each other. The 22 TCM and the 5.7x28mm cartridges are interesting on many levels, but also are not the most common or easily obtained rounds. Both handguns have a military heritage...

www.gun-tests.com

Personally I prefer the 5.7x28 as the Five Seven is much lighter (makes a difference for its use by my family), the rifle has more capacity and is a bullpup, and over time I am betting that the ammo is more available (I have 5K+ rounds and I have paid about 30 to 34 cents per round for most of it). AFAIK there is only one manufacturer for .22 TCM - Armscor. There are two for 5.7 - Federal and FN (not including the custom ammo like Elite).