Pressure signs from suppressor?

[WoolyBugger]

Perhaps you’re getting enough carbon built up in the can where it’s not a problem?

I was interested in the Reaper. I think I’ll keep an eye on this phenomenon a bit more prior to buying one. I can always buy another TBAC and know I’ll be happy.

I have no horse in this race but I wouldn't let my pressure signs discourage you from buying a reaper. I'm willing to bet I could have put any model can on and had the same thing happen.

 

[Fireflyfishing]

The Reaper has less back pressure than standard TBAC cans.

Do you guys have a way to measure this?

The Ultra 7 I have indeed has quite a bit of back pressure. It’s a no go on my gas guns. That being said, I’ve not dealt with pressure issues discussed on this thread from that can on several different calibers and cartridges.

 

[MagnumHntr]

Do you guys have a way to measure this?

The Ultra 7 I have indeed has quite a bit of back pressure. It’s a no go on my gas guns. That being said, I’ve not dealt with pressure issues discussed on this thread from that can on several different calibers and cartridges.

why is it a no go on the gas gun?

 

[Fireflyfishing]

why is it a no go on the gas gun?

Because it has significant back pressure, it’s a gassy mess in your face. I purchased flow through cans for my gassers and have been happy with the results.

 

[NWBLKTAIL]

I have no horse in this race but I wouldn't let my pressure signs discourage you from buying a reaper. I'm willing to bet I could have put any model can on and had the same thing happen.

Agreed, it’s by far the lightest and quietest can I own.

I Only brought up my observations as a means to get feedback from guys with more experience than myself on the particular situation

 

[Formidilosus]

Do you guys have a way to measure this?

They don’t yet. But cyclic rate can be measured to show over-gas issues.

For function, brass ejection is the easy way.

The Ultra 7 I have indeed has quite a bit of back pressure. It’s a no go on my gas guns. That being said, I’ve not dealt with pressure issues discussed on this thread from that can on several different calibers and cartridges.

The issues being talked about, are not primarily a suppressed issue.

 

[Adamc55]

I have no horse in this race but I wouldn't let my pressure signs discourage you from buying a reaper. I'm willing to bet I could have put any model can on and had the same thing happen.

Just ordered a Reaper yesterday, I'm curious to see how it stacks up to some of my other longer cans

 

[Fireflyfishing]

The issues being talked about, are not primarily a suppressed issue.

I tried an adjustable gas block, different buffers, and springs and wasn’t satisfied with the results. I went to the flow through cans and tuned them right up.

 

[Fireflyfishing]

They don’t yet. But cyclic rate can be measured to show over-gas issues.

For function, brass ejection is the easy way.

You’re talking about auto loaders. Tracking.

 

[Formidilosus]

You’re talking about auto loaders. Tracking.

Correct- but it shows you what happening with bolt guns too. Extremely high back pressure cans tend to cause issues in bolt guns with all of this before/more lower back pressure.

 

[Fireflyfishing]

Correct- but it shows you what happening with bolt guns too. Extremely high back pressure cans tend to cause issues in bolt guns with all of this before/more lower back pressure.

Makes sense. Following.

 

[RockAndSage]

They don’t yet. But cyclic rate can be measured to show over-gas issues.

For function, brass ejection is the easy way.

Not aware of anyone in the industry doing this yet, but a laser doppler velocimeter (LDV) should be able to measure a BCG or slide's velocity, depending on the model. There's a window of optimum velocity for BCGs/slides that's right about 12-16fps, which has held pretty strong across the decades in semi-autos, with part mass, spring weight/power, and the amount of energy being applied to the moving parts all calibrated together to keep most guns' moving parts in that velocity window. Higher cyclic rate guns like an MG34 are an exception, obviously, but that's the window that seems to result in the most consistently reliable magazine-fed guns. I'd be extremely interested to see what kind of parts-velocity increases you get with different suppressors.