10mm vs 5.56.....

[Edg]

So I picked up some ammo for 10mm called citizens defence. It shoots a 60gr alloy deep cavity bullet at 2400fps out of a 5 inch barrel.....it strikes me that a 62 gr 5.56 out of a 7.5 or 10.5 inch is also 2400 fps or less. For the same amount of energy 780lbs give or take. Wound channel wise would the 10mm perform more like a rifle bullet or do short barreled ars perform more like a pistol?

[MT1]

I don't thing they would do either. A 10mm 60gr deep cavity sounds like a round that will break apart. You'll have a devastating wound but the lack of mass may result in shallow penetration. A 5.56 round will likely have deeper penetration with less fragmentation.

Unless you load the 10mm with rifle bullets you're not prone to get rifle bullet results. Pistol bullets are designed to perform like... umm... pistol bullets, not rifle.

You're trying to compare apples and oranges.

[IrocGuns]

ballistic coefficient is the missing variable in the equation. muzzle energy might be the same but the trajectory will be radically different.

[MT1]

ballistic coefficient is the missing variable in the equation. muzzle energy might be the same but the trajectory will be radically different.

At typical handgun distances?

[JoshIronshaft]

You're trying to compare apples and oranges.

An apple and orange that weigh the same!

[dkf]

You mean Civil Defense from Liberty ammunition? I saw several gel tests of that 60gr 10mm and SBR .223/5.56 tests with various bullet weight. The 10mm still doesn't compare. Like said apples to oranges, 10mm is still a pistol round regardless of whatever bullet you put in it. The SBR still does more damage with more penetration. These light and fast pistol rounds that practically turn to duest never impressed me and they don't seem to impress the people whom carry a gun for a living either.

[MT1]

An apple and orange that weigh the same!

True. A ton of feathers and a ton of marbles both weigh.... wait for it... a ton! But, they are still very different in their own design.

[Edg]

Obviously that would matterms. But at pistol range..at 10 feet...in the 7 11 parking lot.

[IrocGuns]

my opinion is that your best bet 10 feet away is hydrostatic shock - what causes more, a 180 grain hollowpoint moving at 1200 fps or a 60 grain going 2400 fps? I have no friggin idea. I would probably like the 180 grain going 1200 fps more personally. Then again I mostly carry a 9mm with 124 gr hydroshocks so what do I know lol.

[Delkal]

Read the Wikipedia page on hydrostatic shock. Then decide if you believe it and if it is always reproducible in real word situations. Also note that most of the studies are from higher velocity rifle rounds (well over 2400fps).

https://en.wikipedia.org/wiki/Hydrostatic_shock

The way I look at it a 10mm is a powerful handgun round and you don't need to do much to increase its performance. Its more than enough for deer and similar sized critters. I would not consider a .22 caliber round at 2400 fps adequate.

I would use a heavy bullet that is known to expand and penetrate. My favorite for a 9mm is the 147gr HST's. I would look up some ballistic gel videos for their 10 mm offering but I have a guess that it will be outstanding. If hitting something with a bullet that expands to 3/4 of an inch, penetrates over 12 inches and dumps 700 lbs of energy doesn't work you need a 12 ga.