Why aren’t .45acp carbines more popular?

[CraigC]

Always wondered the same thing. Yeah, we know 9mm is cheaper to shoot, so is .22LR. Not sure why that matters. I'd be all over one, the right one. Been tempted by the Kriss but don't like the Glock mag limitation. Something like the CZ Scorpion, with actual SMG mags and chambering 10mm and/or .45ACP. I'm down.

 

[NIGHTLORD40K]

People are adopting 9mm in large numbers and want a carbine with compatible magazines and ammo. 45 is still going strong but it's hardly going through a resurgence.

Agreed. Im in the process of selling off all my .45s. They just don't do anything for me that 9mm won't anymore and I have a whole slew of 9mm choices from modern carbines to subcompact CCW to 100 year old Lugers and everything in between all standardized on a cheap, readily available cartridge.

 

[NIGHTLORD40K]

Always wondered the same thing. Yeah, we know 9mm is cheaper to shoot, so is .22LR. Not sure why that matters. I'd be all over one, the right one. Been tempted by the Kriss but don't like the Glock mag limitation. Something like the CZ Scorpion, with actual SMG mags and chambering 10mm and/or .45ACP. I'm down.

H&K USC?

 

[CraigC]

H&K USC?

It's about 90% there.

 

[Crosshair]

People are adopting 9mm in large numbers and want a carbine with compatible magazines and ammo. 45 is still going strong but it's hardly going through a resurgence.

Honestly, magazine compatibility is not that big of a deal for most people. It's the ammo compatibility. The reason people use the PC-9 with Glock magazines even if their pistol is a Springfield XD is because Glock magazines are just more readily available than the Ruger ones. 1% shooters whine too much about magazines. You're buying a $600+ gun and shooting ammo that costs $300 per 1,000 rounds. Stop crying and pretending that you can only use the magazine once. The 99% shooters aren't complaining to any meaningful degree, they buy 4-10 mags of whatever their gun takes and call it good.

I gifted my brother a PC-9 and gave him the Ruger magazines that came with my other PC-9s. He doesn't care in the slightest about it "not taking Glock mags". He has 4 magazines that fit the gun and that's good enough for him.

 

[Mosin77]

Honestly, magazine compatibility is not that big of a deal for most people. It's the ammo compatibility. The reason people use the PC-9 with Glock magazines even if their pistol is a Springfield XD is because Glock magazines are just more readily available than the Ruger ones. 1% shooters whine too much about magazines. You're buying a $600+ gun and shooting ammo that costs $300 per 1,000 rounds. Stop crying and pretending that you can only use the magazine once. The 99% shooters aren't complaining to any meaningful degree, they buy 4-10 mags of whatever their gun takes and call it good.

I gifted my brother a PC-9 and gave him the Ruger magazines that came with my other PC-9s. He doesn't care in the slightest about it "not taking Glock mags". He has 4 magazines that fit the gun and that's good enough for him.

This is how I feel. I use my PC9 with Glock mags ‘cause they’re a lot cheaper than the Ruger mags. If there was an adapter for Beretta PX4 mags I might install it but only because I have more of those, and I hate buying Glock mags when I don’t even own a Glock… But right now if I were to buy more PC9 mags, Glock it would be.

 

[mavracer]

I was always talking about the volume of gas that needs to be suppressed after it has exited the bore.

Is there some gas that comes from someplace other than the barrel that goes into the suppressors?
Now if we can agree that it's the gas that comes out of the barrel that we need to slow down and cool off then we can play with the large volume/lower pressure vs smaller volume/higher pressure game.

 

[CapnMac]

a .30 is easier to suppress, or suppresses quieter than a .45 caliber?

Depends.
Two things are in play. Bullet velocity, and gas characteristics.
It's possible to get all the powder burned in a given caliber in a given length of barrel.
The "can" is then expected to collect, cool, and de-accelerate those gasses.

Now, if the bullet launched is moving faster than 1050 fps, generally, at 'nominal' "sea level" it will produce supersonic sound as it flies (in the vernacular, the "crack" of the bullet). 5.56nato leaves the barrel around 3300 fps, which is Mach 2.9 (all in rather 'round' numbers). 230gr 45acp ball is tootling along maybe as high as 960fps, so it's "sub sonic" right out of a factory box of ammo (some, many, of the JHP are closer to 1100).

So, if the "can" can quiet the propellant gasses, then, you need to look at sound created by the bullet itself. 45acp gives a "leg up" on that. Subsonic 300BO does as well. Plain Jane 30carbine, yeah, not so much.

 

[tarosean]

Been tempted by the Kriss but don't like the Glock mag limitation.

Glock mags are by far the best thing about them.

(OEM Only)

 

[Navy87Guy]

My H&K UMP (converted from a USC) is a blast to shoot and it’s scary accurate. Sure, ammo costs more - but that “Thunk!” when the bolt cycles is worth it!

 

[CraigC]

Glock mags are by far the best thing about them.

(OEM Only)

I disagree 100%. Rather have an SMG mag like the HK or CZ.