10mm in 45ACP Suppressor?

[Akita]

Anyone ever try 10mm in a 45 ACP suppressor?

I'm thinking that some 220 DoubleTap out of a G29 might be slow enough and that the suppressor might trap enough gas to be effective in a quality 45 supressor(looking at a Gemtech SOS).

http://www.gem-tech.com/Images/SHOT-02-20.jpg

[Chainsaw Maniac]

I don't know about shooting 10MM thru a .45 suppressor, but I do know that unless you use a subsonic round, you will hear a loud 'crack' when the bullet breaks the sound barrier. I'm planning on getting a suppressor at some point. I have a G20, and I'm planning on getting a threaded .40 conversion barrel. I can get 180 grain .40 Gold Dots from Georgia Arms that are rated at 1,050 fps. Speed of sound is just a hair over 1,100 fps.

[Akita]

Yeah, the 220gr DoubleTap is labeled at 1125fps, and I suspect a bit less out of the shorter barrelled G29. So I'm not really worried about the sonic crack. So this round should be ideal for a supressor....max kinetic energy with a heavy 220gr bullet traveling a hair under the speed of sound.

My problem is(other than being too cheap to buy 2 suppressors when 1 will do a pretty good job) is that I havent found a dedicated 10mm suppressor by a 'major' suppressor manufacturer. Plenty of 40S&W suppressors, but I somehow dont think they'd be up to the task.:)

[TenMil]

When it comes to sound suppressing a handgun, you really can’t beat the .45 ACP.
I am a 10MM fan to my bones, but having been around a number of class 3 goodies and having heard them fired, the .45 is the way to go- getting stock-subsonic and big impact.

[RenegadeGlocker]

For some reason, there is little interest in cans for .40S&W &10mm. I can understand the lack of interest in 10mm, but .40S&W is almost always subsonic, so it should perform well, though it does suffer from a large bore (like 45ACP), so it would probably not be as quiet as 9mm.

[bambihunter]

I agree with TenMil above... This is about the only time a .45 acp can beat the 10mm is when one is talking about suppressing it. Since it is already big and slow it is the premier suppressed handgun cartridge IMHO.

[pangris]

Originally posted by bambihunter
I agree with TenMil above... This is about the only time a .45 acp can beat the 10mm is when one is talking about suppressing it. Since it is already big and slow it is the premier suppressed handgun cartridge IMHO.

.45 also beats the snot out of 10mm in sales. Not saying that makes it right, just want us to be complete in our diagnosis ;)

Paul

[bambihunter]

In my post above I was referring to the individual cartridge specs, not the resulting human specs (sales) or any other factor really. What sells the most doesn't always equate to what's the best cartridge. I can cite cartridge after cartridge where the more popular option is NOT the most popular one. Various factors contribute to this.

Hey, just be happy I admitted the .45 acp actually has one real benefit over the 10mm. ;a

[pangris]

just yanking your chain, BH! :cool:

[atfsux]

Originally posted by TenMil
When it comes to sound suppressing a handgun, you really can’t beat the .45 ACP.
I am a 10MM fan to my bones, but having been around a number of class 3 goodies and having heard them fired, the .45 is the way to go- getting stock-subsonic and big impact.

I would only add to this that the .45 operates at about 17,000 psi which is key. The .40S&W, 9mm and 10mm all operate nearer to 25,000 or 30,000 psi. This makes a difference because the principal job a suppressor does to achieve the sound reduction is to slow the rate at which the expended gas releases into the atmosphere. Slowing gas traveling at 17,000 psi is easier than slowing gas at 30,000 psi, even if it is coming out of a smaller hole. The little .380ACP is essentially a dimentionally exact replica of the .45ACP in reduced form, also operating at only 17,000 psi or less. This is why .380 is so popular for suppression as well.

[Akita]

atfsux,
Thanks for the reply. I had a gnawing feeling that I was missing something. I think you've hit the nail on the head.
That kind of pressure/gas volume difference would certainly not work well with a 10mm and might even damage a supressor designed for a 45.

[atfsux]

Originally posted by Akita
atfsux,
Thanks for the reply. I had a gnawing feeling that I was missing something. I think you've hit the nail on the head.
That kind of pressure/gas volume difference would certainly not work well with a 10mm and might even damage a supressor designed for a 45.

A friend of mine is a machinist, who has made his own suppressors. (Yes, they're legal.) I wouldn't worry about damaging a .45ACP suppressor by putting 10mm through it. If it is made by a reputable builder, it ought to easily handle the pressure. Almost all handgun caliber suppressors are constructed from seamless hydrolic aluminum tubing, which is strong stuff made to handle fluid pressure. My buddy made one for his .22 rifles out of this stuff, and just for giggles we stuck it on my CAR-15 to see if it would handle .223 pressures (over 50,000 psi). It held, though I wouldn't want to do that too often. It is likely any currently made .45 suppressor from Gemtec, Bowers, AWC or others is similarly constructed.