The Gun Thread

CALEMT

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I recently bought a Daniel Defense DDM4 PDW in .300 BLK and it has quickly become my favorite firearm. I know it is blasphemy, but I am really not a big fan of the AR platform…..this DD PDW is the first one that I really, really liked.
If you were some other members on this forum I wouldn’t have to ask this question, but do you shoot it suppressed or un suppressed?
 
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Carlos Danger

Carlos Danger

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If you were some other members on this forum I wouldn’t have to ask this question, but do you shoot it suppressed or un suppressed?
I just bought the PDW and do not own a suppressor. I probably will eventually, but it isn't high on my list of priorities. To me the biggest appeal of the .300 BLK is not that it works well suppressed, but that it works so well in defensive range despite being such a compact weapon.

One of the surgeons I work with has a high-end (I forget the brand) AR pistol in .300 which he's been trying to get to work with a suppressor, and he's having all kinds of problems with blowback for some reason.
 
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Carlos Danger

Carlos Danger

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Well, you're really going to hate me. I have an M1 Carbine, M1A Squad Scout, and a M1A SOCOM. Sold my Mini14 and Mini30 a few years ago when I was consolidating calibers. Also sold my full sized M1A since it was too unwieldy compared to the Squad Scout for only a couple hundred FPS increase in velocity.
No hate, just envy.
 

FiremanMike

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Well, you're really going to hate me. I have an M1 Carbine, M1A Squad Scout, and a M1A SOCOM. Sold my Mini14 and Mini30 a few years ago when I was consolidating calibers. Also sold my full sized M1A since it was too unwieldy compared to the Squad Scout for only a couple hundred FPS increase in velocity.
Do you reload? That's a lot of expensive ammunition there..
 

ffemt8978

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Do you reload? That's a lot of expensive ammunition there..
Yes I reload. I primarily reload my straight wall calibers, simply because it's easier and safer. It allows me to take some if that savings and use it on new 308 ammo.

Costs is one of the reasons I consolidated calibers a few years ago. Decided to cut back to only the most versatile calibers, even if they're not the most common. So now I primarily have 10mm, .308 and 45-70 and 12ga. Since every rule has an exception, mine is the M1 Carbine, and my very first 9mm pistol the Ruger P85. I also have a couple of 30-30 lever guns and an AR15 but I really don't shoot those often.
 

FiremanMike

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Yes I reload. I primarily reload my straight wall calibers, simply because it's easier and safer. It allows me to take some if that savings and use it on new 308 ammo.

Costs is one of the reasons I consolidated calibers a few years ago. Decided to cut back to only the most versatile calibers, even if they're not the most common. So now I primarily have 10mm, .308 and 45-70 and 12ga. Since every rule has an exception, mine is the M1 Carbine, and my very first 9mm pistol the Ruger P85. I also have a couple of 30-30 lever guns and an AR15 but I really don't shoot those often.
I loathe reloading throated rounds, such a pain..
 

ffemt8978

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VFlutter

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I would not recommend a DI suppressed SBR. If I had to do it all over again i'd stick with a piston gun like a SCAR16, HK416, or Sig MCX.
 
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Carlos Danger

Carlos Danger

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I would not recommend a DI suppressed SBR. If I had to do it all over again i'd stick with a piston gun like a SCAR16, HK416, or Sig MCX.
Supposedly the DD PDW works well suppressed. Those Sigs are awesome, though. I would have bought one if I'd come across one before I found the DD.
 

CALEMT

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MCX or even a MPX would be rad.
 

Akulahawk

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One of the surgeons I work with has a high-end (I forget the brand) AR pistol in .300 which he's been trying to get to work with a suppressor, and he's having all kinds of problems with blowback for some reason
Suppressors tend to generate more backpressure (compared to no suppressor) in the barrel. This because a significant amount of gas remains trapped in the suppressor, even after the bullet has left the system. This changes the pressure curve in the barrel, resulting in a longer amount of time the gas system "sees" pressure. So with DI rifles, the initial gas impulse opens the BCG and gets it moving rearward. Then the impulse is gone and only a little gas gets vented into the receiver. Add a suppressor into the mix and you get gas being pushed under pressure into that same area for a longer period of time. Therefore, lots more blowback of gas. Probably much better an option to go to a pushrod system and adjust the system to just barely operate the BCG when there's no suppressor and live with a little more gas w/ suppressor OR find a gas block that's adjustable on the fly to change between suppressor and no suppressor.

The things I learned from my M1 Garand...
 

GMCmedic

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I reloaded some 7mm rem mah and 223 test rounds. I'm going to forego the ladder test and try out the Satterlee method since I finally bought a Chrono. Seems se much easier and I wont have to start from scratch if I decide to change powders or bullets.

Bonus only loaded 10-15 test rounds instead of 30+
 
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Carlos Danger

Carlos Danger

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Suppressors tend to generate more backpressure (compared to no suppressor) in the barrel. This because a significant amount of gas remains trapped in the suppressor, even after the bullet has left the system. This changes the pressure curve in the barrel, resulting in a longer amount of time the gas system "sees" pressure. So with DI rifles, the initial gas impulse opens the BCG and gets it moving rearward. Then the impulse is gone and only a little gas gets vented into the receiver. Add a suppressor into the mix and you get gas being pushed under pressure into that same area for a longer period of time. Therefore, lots more blowback of gas. Probably much better an option to go to a pushrod system and adjust the system to just barely operate the BCG when there's no suppressor and live with a little more gas w/ suppressor OR find a gas block that's adjustable on the fly to change between suppressor and no suppressor.

The things I learned from my M1 Garand...
i know how the gas systems work, but supposedly some of these higher end DI guns (DD PDW, Q Honey Badger) work well with suppressors with some adjustment to the gas block.
 
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Carlos Danger

Carlos Danger

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Costs is one of the reasons I consolidated calibers a few years ago. Decided to cut back to only the most versatile calibers, even if they're not the most common. So now I primarily have 10mm, .308 and 45-70 and 12ga. Since every rule has an exception, mine is the M1 Carbine, and my very first 9mm pistol the Ruger P85. I also have a couple of 30-30 lever guns and an AR15 but I really don't shoot those often.
I’ve been thinking the same thing. I’d still like a 10mm pistol, but 9mm is so much cheaper and easier to find that my primary handguns will always be 9mm. Also as much as I like this new .300 BLK PDW, it’s so much easier and cheaper to stock up on 5.56 and .308 and those rounds are so versatile that I don’t see myself ever owning very many guns that aren’t chambered in 9mm, 5.56, or .308.
 

ffemt8978

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I loathe shooting .40, I can't imagine how bad 10mm is..
10mm guns are generally heavier and absorb more of thr recoil...especially when shooting off the shelf big brand ammo that is about the same power as a .40. In my 1911, perceived recoil is about the same as a 45 ACP, unless I'm running Underwood or Buffalo Bore in it.
 
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ffemt8978

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I’ve been thinking the same thing. I’d still like a 10mm pistol, but 9mm is so much cheaper and easier to find that my primary handguns will always be 9mm. Also as much as I like this new .300 BLK PDW, it’s so much easier and cheaper to stock up on 5.56 and .308 and those rounds are so versatile that I don’t see myself ever owning very many guns that aren’t chambered in 9mm, 5.56, or .308.
Just because it's a common caliber does not make it a versatile one. One of the primary reasons 9mm and 556 are so common is the military surplus side of the equation. Both are good rounds for stopping two legged threats (primary purpose of military ammo), but they generally suck when it comes time to hunt four legged game.
 

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