450 smc questions

John0011 · February 20, 2020, 05:59 PM

Thinking about picking up a cmmg 45 acp carbine that can fire the 450 smc.

But the 450 smc seems to use a thicker brass with a small magnum pistol primer, Starline doesn't sell it. Just Buffalo Bore loaded ammo.

Can a Glock gen4 G21 or G41 fire a 450 smc?

Can a Glock gen4 G21 or G41 fire a 45+P, or a 45 super?

I have an itch to pickup a 45 and start reloading for it!

**Unclenick** · February 20, 2020, 09:14 PM

Call Glock and ask. My expectation would be that, especially with a barrel that supports the brass well, they should be usable. But ask to be sure.

74A95 · February 21, 2020, 11:27 AM

Word (from founders of 45 Super and 450 SMC) was that a Glock needed a different barrel with better case support. Doubletap said (a couple years ago) they would sell just the brass. Contact them.

T. O'Heir · February 21, 2020, 02:36 PM

The .450 SMC is a variant of the .45 Super with a smaller primer pocket. Alleged to use small rifle magnum primers. Internet rumour has it that any firearm rated for .45 +P is OK.
A net search for '450 SMC' turns up 18,100,000 results. This is one.
https://www.ammoland.com/2014/11/450...#axzz6EcQpcM00

**Unclenick** · February 23, 2020, 12:00 PM

Interestingly, that article suggests the brass is thick enough not to require more than normal chamber support. It sounds like the case design is just a better pressure mousetrap.

T. O'Heir · February 23, 2020, 02:26 PM

"...a better pressure mousetrap..." Apparently that's exactly what it is. Lotta "better mousetraps" in the firearms world. I blame the MBA's running the assorted firearms companies. snicker.

February 20, 2020, 05:59 PM	#1
John0011 Member Join Date: March 28, 2015 Posts: 59	450 smc questions Thinking about picking up a cmmg 45 acp carbine that can fire the 450 smc. But the 450 smc seems to use a thicker brass with a small magnum pistol primer, Starline doesn't sell it. Just Buffalo Bore loaded ammo. Can a Glock gen4 G21 or G41 fire a 450 smc? Can a Glock gen4 G21 or G41 fire a 45+P, or a 45 super? I have an itch to pickup a 45 and start reloading for it!

February 20, 2020, 09:14 PM	#2
Unclenick Staff Join Date: March 4, 2005 Location: Ohio Posts: 21,063	Call Glock and ask. My expectation would be that, especially with a barrel that supports the brass well, they should be usable. But ask to be sure. __________________ Gunsite Orange Hat Family Member CMP Certified GSM Master Instructor NRA Certified Rifle Instructor NRA Benefactor Member and Golden Eagle

February 21, 2020, 02:36 PM	#4
T. O'Heir Senior Member Join Date: February 13, 2002 Location: Canada Posts: 12,453	The .450 SMC is a variant of the .45 Super with a smaller primer pocket. Alleged to use small rifle magnum primers. Internet rumour has it that any firearm rated for .45 +P is OK. A net search for '450 SMC' turns up 18,100,000 results. This is one. https://www.ammoland.com/2014/11/450...#axzz6EcQpcM00 __________________ Spelling and grammar count!

February 23, 2020, 12:00 PM	#5
Unclenick Staff Join Date: March 4, 2005 Location: Ohio Posts: 21,063	Interestingly, that article suggests the brass is thick enough not to require more than normal chamber support. It sounds like the case design is just a better pressure mousetrap. __________________ Gunsite Orange Hat Family Member CMP Certified GSM Master Instructor NRA Certified Rifle Instructor NRA Benefactor Member and Golden Eagle

February 23, 2020, 02:26 PM	#6
T. O'Heir Senior Member Join Date: February 13, 2002 Location: Canada Posts: 12,453	"...a better pressure mousetrap..." Apparently that's exactly what it is. Lotta "better mousetraps" in the firearms world. I blame the MBA's running the assorted firearms companies. snicker. __________________ Spelling and grammar count!

February 21, 2020, 11:27 AM	#3
74A95 Senior Member Join Date: November 26, 2016 Posts: 1,570	Word (from founders of 45 Super and 450 SMC) was that a Glock needed a different barrel with better case support. Doubletap said (a couple years ago) they would sell just the brass. Contact them.