.450 SMC for +p .45 ACP pistols

[Sam1]

So doubletap is now selling .450 SMC.  Had never heard of this round until recently... Gonna pick up a few boxes and see what it is like.  Works in a standard .45 ACP gun that can handle +P ammo.  Puts the .45 in 10mm power territory.

Guess I missed the memo on this ammo, it looks pretty hardcore, especially that 185gr round.

[Rightwinger]

Let us know.  Had not heard of this one either.  Very very interested in a range report.

If you reload or have calipers, post up the dimensions as well.  The only thing I can think of is they're using a hotter powder.

[Rightwinger]

Let us know.  Had not heard of this one either.  Very very interested in a range report.

If you reload or have calipers, post up the dimensions as well.  The only thing I can think of is they're using a hotter powder.

[nightrunner]

I have heard of .45Super but not this.

 

Just looked it up and it's pretty much the same as a .45super, which is just a .45acp with stronger brass, except the .450SMC uses a small rifle magnum primer for more brass in that area for strength

[Patton]

I will look but I believe that is what we have always called 45Super with small primers.

[Sam1]

This is supposedly different than .45 super primarily from the chamber pressure.   .45 super is rated at 28,000.  .45  +p is 23,000.  the doubletap .450 smc is supposed to be around 25,000 but also has more brass than a .45 super which helps a bit more.

There's not a lot of specifics on this, one site said it actually uses pretty much a cut down .308 case.  going to ask them to verify chamber pressure on their loads when i order.

[Jct1911]

22 minutes ago, Sam1 said:

This is supposedly different than .45 super primarily from the chamber pressure.   .45 super is rated at 28,000.  .45  +p is 23,000.  the doubletap .450 smc is supposed to be around 25,000 but also has more brass than a .45 super which helps a bit more.

There's not a lot of specifics on this, one site said it actually uses pretty much a cut down .308 case.  going to ask them to verify chamber pressure on their loads when i order.

That's how the cartridge started, was called 45-08 Armco  at one point. Brass has to be inside reamed/turned to accept projectile. I wouldn't shoot this stuff in any gun without some proper modifications. It would most likely shoot a standard sprung 45 1911 loose in a few mags. 

Edited June 25, 2016 by Jct1911

[Sam1]

25,000-26,000psi.  They updated their site to say no compact pistols and need a +p rated spring.

That's 2000 over +p rating so I don't think it is as miraculous as presented.

Edited July 25, 2016 by Sam1

[Handsome Rob]

I'll stick with standards & supers. 

Seems like a solution looking for a problem to be honest.