Air stripper or moderator?

Depends on the caliber and use. Hunting with small bore I always prefer a Mod to be stealthy. Benchrest I prefer an air stripper, I think it helps with accuracy more than a mod and good ones are adjustable plus the sound of the gun firing might help distract your competition... lol. A working muzzle break is my preference on bigbore. It helps with accuracy by taming the recoil and also somewhat as an air stripper. 
 
Allan and I tested moderators and strippers at his place when he lived in Illinois. He decided to matket a stripper/moderator combo. It is not as quiet as his fully baffled moderators. I now have both for my ZM2002 The stripper has less muzzle flip than the baffled moderator. The difference is subtle, sound with stripper is definitely subdued.
 
I think Moderators increase accuracy, primarily because it allows a stabilization of the projectile without any asymmetrical gas/air flow from the bore. I’ve tested this on both airguns and firearms and I have always seen an increase in accuracy. Since airguns are running subsonic too, I think that initial pellet stabilization is more important in shorter barrels, but that is just a hunch. Probably largely depends on the valve too, as in how much air and for how long? Is this hammerless or not? Is this regulated or not? What do you guys think?
 
Everyone above is right. My post isn't arguing their points.

As DonC. Pointed out, a good one can do both, but;

A true air stripper allows the gases to be stripped away (redirection) from the bullets path more so than slow them (Suppressor.) 

These gases create a disturbance of the bullets departure. Even if everything is perfectly symmetrical. Though you'll see a stripper works like magic on barrels that weren't perfect to begin with.

In a PCP/SSP/ any airgun, the projectile is pushed out first. Barrels like a Smooth Twist definitely allow the pellet to be first with little to no air passing the projectile, until the seal is passed at skirt of pellet leaving the crown.

It's at the crown which is crucial that a projectile not be blown one way or another off intended path.
I understand the question is "LDC or Stripper." The answer isn't that simple.

I don't need quiet airguns but I sure enjoy them more. A stripper can reduce recoil in a firearm significantly, majorly. 
A moderator slows that air and by doing so you will notice a huge increase in back pressure, which isn't true "recoil" Especially if your suppressor isn't matched up for the power. There's also timing. 


I timed my Sumatra .25 Rocker1 with a simple plastic bushing taken down in length slowly until POI was the same. With suppressor off or on. Harmonics play a huge part also. 


https://youtu.be/OksIysh0eTU



The above video is exactly why a FX liner must be harmonically tuned off you want it optimized. It's also why I choose 0.750" thick barrels.
It's exactly why on a "Big Bore" powerful slug gun, I chose a Scandalous by John Bowman. All 3 Lilja barrels are 32tpi for three full inches of 96 tapered cerakoted threads into a monoblock. Then mill through the block and barrel as one. Add bolt, add cocking lever. 
Look at most big bores or any component gun. You don't get 1/8"moa with 420257 cast slugs from something that doesn't have a solid mated barrel.

From "Smarter Every Day."



https://youtu.be/IAR4yTYslkk



Shockwaves are created even by subsonic projectiles:



https://youtu.be/BPwdlEgLn5Q



And folks, please be aware, pellets & slugs aren't like any high speed varmint bullet, or plain lead. These things can be deflected & keep on trucking.



https://youtu.be/F3FkAUbetWU


 
The air strippers with which I am familiar are part of either a shroud or moderator, not a stand-alone device. In that case, I suppose it is more a muzzle brake, and will not contribute to lowering the noise. But if noise reduction is the goal, I would say a moderator is considerably better than the air stripper/shroud rifles in my experience. If accuracy is the primary goal, then like any variable, you have to experiment. 
 
Allan and I tested moderators and strippers at his place when he lived in Illinois. He decided to matket a stripper/moderator combo. It is not as quiet as his fully baffled moderators. I now have both for my ZM2002 The stripper has less muzzle flip than the baffled moderator. The difference is subtle, sound with stripper is definitely subdued.


Does Allan have a website?

Thanks

Ed
 
I like a silencer myself. Don't beat around the bush, no ones kidding anyone calling the part an odd name.

Muffler is a more accurate term for what that part does than the word moderator is..!

Mike

Silencer is the wrong firearm term too. They are traditionally called suppressors, which is a more descriptive term like your muffler idea, because, after all, they do not silence but reduce. The function of a moderator vs a suppressor are quite different, as one retains heat through metal mesh and baffles, and one is dealing with the acoustics of air flow.



Only non firearm people and movies and congressmen call them silencers. So silencer is the most odd name :)
 
The air strippers with which I am familiar are part of either a shroud or moderator, not a stand-alone device. In that case, I suppose it is more a muzzle brake, and will not contribute to lowering the noise. But if noise reduction is the goal, I would say a moderator is considerably better than the air stripper/shroud rifles in my experience. If accuracy is the primary goal, then like any variable, you have to experiment.

I was thinking he meant a muzzle break or was classifying it as an air stripper. 
 
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Everyone above is right. My post isn't arguing their points.

As DonC. Pointed out, a good one can do both, but;

A true air stripper allows the gases to be stripped away (redirection) from the bullets path more so than slow them (Suppressor.) 

These gases create a disturbance of the bullets departure. Even if everything is perfectly symmetrical. Though you'll see a stripper works like magic on barrels that weren't perfect to begin with.

In a PCP/SSP/ any airgun, the projectile is pushed out first. Barrels like a Smooth Twist definitely allow the pellet to be first with little to no air passing the projectile, until the seal is passed at skirt of pellet leaving the crown.

It's at the crown which is crucial that a projectile not be blown one way or another off intended path.
I understand the question is "LDC or Stripper." The answer isn't that simple.

I don't need quiet airguns but I sure enjoy them more. A stripper can reduce recoil in a firearm significantly, majorly. 
A moderator slows that air and by doing so you will notice a huge increase in back pressure, which isn't true "recoil" Especially if your suppressor isn't matched up for the power. There's also timing. 


I timed my Sumatra .25 Rocker1 with a simple plastic bushing taken down in length slowly until POI was the same. With suppressor off or on. Harmonics play a huge part also. 




https://youtu.be/OksIysh0eTU





The above video is exactly why a FX liner must be harmonically tuned off you want it optimized. It's also why I choose 0.750" thick barrels.
It's exactly why on a "Big Bore" powerful slug gun, I chose a Scandalous by John Bowman. All 3 Lilja barrels are 32tpi for three full inches of 96 tapered cerakoted threads into a monoblock. Then mill through the block and barrel as one. Add bolt, add cocking lever. 
Look at most big bores or any component gun. You don't get 1/8"moa with 420257 cast slugs from something that doesn't have a solid mated barrel.

From "Smarter Every Day."





https://youtu.be/IAR4yTYslkk





Shockwaves are created even by subsonic projectiles:





https://youtu.be/BPwdlEgLn5Q





And folks, please be aware, pellets & slugs aren't like any high speed varmint bullet, or plain lead. These things can be deflected & keep on trucking.





https://youtu.be/F3FkAUbetWU




Good lad. This is a good post