Aluminum cased 45acp

Sid T.

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Does anyone run aluminum cased 45acp in a F/A Mac10/45?
Yes, I know of the inherent dangers so please don't bother to add a pious note telling me not to do it.
It's just seems that it might work and there's braver souls than I who've likely tried it.
 

StooperZero

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if it was truly 'dangerous' , blazer would have been out of business a long time ago .


Never tried in a mac but ran about 1,000 9mm in under 2 hours through an mk760 one day without a hitch or the world ending. gun was incredibly filthy but the ammo was dirt cheap.
 

Sid T.

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if it was truly 'dangerous' , blazer would have been out of business a long time ago .


Never tried in a mac but ran about 1,000 9mm in under 2 hours through an mk760 one day without a hitch or the world ending. gun was incredibly filthy but the ammo was dirt cheap.

Sounds promising since 9mm runs at higher pressures than 45.
 

ogree

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I had tried Blazer aluminum ammo in my M-10 .45 once.
It never did feed properly and consistently bent the cases, not a single round chambered and fired.
I shot up the remainder in a 1911 and never tried it again in the MAC.
I guess the aluminum just isn't strong enough to withstand running through an Ingram.
 

Hey...

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Only one time (learned my lesson) when had nothing else to shoot at the end of the day ran aluminum cased Federal 9mm in an m11/9 and within HALF a magazine had a shell seperate leaving a bullet halfway down the barrel, with the back of the shell casing blown out the ejection port and the front half stuck in the chamber (thankfully) preventing the next round from fully chambering and firing.

SMG chambers are cut loose to help reliability. Brass expands, aluminum doesnt as much. Not a recipe for happiness in an open bolt SMG with an aluminum case.
 

LawBob

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if it was truly 'dangerous' , blazer would have been out of business a long time ago .


Never tried in a mac but ran about 1,000 9mm in under 2 hours through an mk760 one day without a hitch or the world ending. gun was incredibly filthy but the ammo was dirt cheap.

Cuz they expect you to use full auto??

It's dangerous as hell. In semi auto closed bolt, if the extractor rips the rim off, and it tries to load the next round with the spent casing in the chamber, big deal.

In open bolt, the bolt ramps a new round towards the chamber, where it has no where to go, and it fires the next cartridge, out of battery. BOOM!

Aluminum Case ammo is more susceptible to this issue.

. Have fun.
 
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Shattered

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Ummm...I know I'll catch a bunch of grief here, but I've been doing some aluminum 9mm reloading. 100 rounds worth with cast 115gr lead projos. Reloaded the batch 8 times so far. No split cases, no problems and the last test mule was my MP5. Still have all 100 rounds intact. No losses, but I will tell you that tumbling in corn cob makes them dark as hell.

Why? Because everyone says you can't and I know I can. I don't intend to load any quantity but it always is fun to pull out a handful of reloaded aluminum (and steel) to mess up the Internet experts.
 

Hey...

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In half a mag the aluminum gave up and crapped the bed.

That's a fact, it was my face tucked up against the gun when it happened.
Use it if you want, but I'm not. Simple as that.
 

root

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I've used it in the semi's both 9mm and 45 acp.
never in the MAC.
BUT if I had it I'd run it.
WHY? Well because it's a MAC-10 and I'll blow myself up before the shit brick FA pistol.

Rich
 

DINK

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There's one guy at my local club that has been shooting nothing but Blazer in his MAC for years (probably decades). The gun has always worked fine.

FWIW
 

IndustrialRescue

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The only time I've used aluminum case 45, I got a ton of torch cut cases.

I run steel case most of the time in my MAC, and brass. I wouldn't try aluminum.
 

DistalRadius

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Blazer themselves recommends against use of its aluminum cased products in open bolt firearms. I think the potential problems are pretty readily apparent, your choice whether to roll the dice or not.

Wear gloves.
 

EL DUCE

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Last week I had a guy try to run some of the 9mm in my F/A Uzi. The gun didn't like it at all.
 
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