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Old 07-05-2012, 08:40 PM   #11
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Ive got an olympic 45acp upper. Range toy only. The issue is the newer mags arent reliable. The older converted uzi all metal ones are superb. Ive also experienced parts breakages in the lower due to recoil slamming things around. Its direct blowback.

45 acp works as a pistol round but its not so good as a carbine round due to the over engineering and weight needed to make it work as a direct blowback semiauto.

The ejector on the olympic is just a piece of stiff wire. Definately not something i would bet my life on.

You want a cool homedefense gun get a saiga12 or go with the standard 556/223 ar15 skip the pistol uppers for home defense

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Old 07-05-2012, 10:15 PM   #12
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And the 5.56 has about 10X the stopping power of the .45 ACP.

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Old 07-05-2012, 10:19 PM   #13
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I think there's a pretty overwhelming consensus that you should stick with a standard .223/5.56 AR.

Its seems like a good idea to have a round that works in both your carbine and pistol but I think in reality you'd be better served with two seperate calibers. Plus .223 is cheaper to plink with than .45.

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Old 07-05-2012, 10:20 PM   #14
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I think the only advantage of the .45 is better barrier penetration and a larger entrance wound.

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Old 07-05-2012, 11:35 PM   #15
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458 Socom sounds like the ticket.......

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Old 07-05-2012, 11:51 PM   #16
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Locutus. 556 having more stopping power is a false statement. Slower pistol rounds have more stopping power. Rifle rounds tend to pass through objects more. Many case files have shown an assailant was still capable and continued to fight after being hit by multiple rounds from a 556 vs a 9, 40 and 45.

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Old 07-06-2012, 12:14 AM   #17
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Does the 45acp round stop threats? That's a big, proven YES!

Would an extra 150 ft/s be helpful to that end? Of course.

Are there a lot of high-quality 45acp carbines out there? NO!!!! That's too bad. AR-45, HK USP (expensive), Beretta Cx4 (small mags), HiPoint (not gonna trust my family's life to a $250 piece of...something), Just Right (can't find one FS anywhere!).

Building a light 14.5" AR carbine might just have to do, and then pair it with a Colt Combat Elite. I was just hoping to keep it below that $2200 price tag.

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Old 07-06-2012, 12:29 AM   #18
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Quote:
Originally Posted by angurvail View Post
Locutus. 556 having more stopping power is a false statement. Slower pistol rounds have more stopping power. Rifle rounds tend to pass through objects more. Many case files have shown an assailant was still capable and continued to fight after being hit by multiple rounds from a 556 vs a 9, 40 and 45.
5.56 rounds act considerably different up close.

Pistol rounds are still pistol rounds. There is no magic to be found in the .45 acp, it's still a pistol round even with an extra 100-150 fps. It isn't going to trump what a light thin jacketed bullet will do going 3000 feet per second and smacking something up close. The 5.56 is actually more likely to dump more energy into the target and not pass through because the bullet is more likely to fragment as long as it is still traveling over 2500 fps.

Also since you don't have to abide by the Hague accords restricting ammo to non-expanding types used for combat. you can use soft points or hollow points.

The AR was designed to run a rifle round not operate as a blow back gun for a heavy pistol round, using proprietary mags that could be hard to find some day compared to the tons of 5.56 mags available for an AR.

Olympic is also not my first choice of AR manufacturer, based on the problems I had with one of their carbines. Then after working on it so much I figured out that a lot of their parts just don't measure up.
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Old 07-06-2012, 12:45 AM   #19
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.45 Hydra-shok:
http://www.youtube.com/watch?NR=1&feature=endscreen&v=OwAbIdamK2A

5.56 M855 round: Filmed from further back.


.223 Federal Triple-shok:

Yep, the rifle rounds pass through, but they also do a whole lot more damage than a .45 And both of those rifle rounds are not soft points.
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Old 07-06-2012, 04:37 PM   #20
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Quote:
Originally Posted by angurvail View Post
Locutus. 556 having more stopping power is a false statement. Slower pistol rounds have more stopping power. Rifle rounds tend to pass through objects more. Many case files have shown an assailant was still capable and continued to fight after being hit by multiple rounds from a 556 vs a 9, 40 and 45.
Research terminal balistics and look for hydrostatic shock.

The hydrostatic shock of the higher velocity rifle round will outperform any slower handgun round.
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