Pressure signs from suppressor?

[Lawnboi]

14 degrees yesterday, 20 the day before. I didn’t take any other atmospherics

Head wind?

 

[WoolyBugger]

Head wind?

yes

 

[HuntHarder]

Totally normal if you are near max, which it appears you are. Reduce by .5 grain and try again.

 

[Lawnboi]

yes

Being that velocity is the same I think you got smoke condensation in your chamber causing bolt thrust issues. This happens to me in the winter. For range shooting I’ll use a fan after a quick string and don’t have issues.

Not saying some of the other stuff above couldn’t be going on too. But I’m not suprised anymore when here in wi during winter if it’s damp enough out with a head wind. I just know I may get some bolt thrust issues going on.

Load a string of 10 at 40 grains and see what it does

 

[mt100gr.]

This thread has me thinking....

Are certain suppressors with specific form factors (length/baffle style/quality, etc) more prone to this?

 

[mt100gr.]

Being that velocity is the same I think you got smoke condensation in your chamber causing bolt thrust issues. This happens to me in the winter. For range shooting I’ll use a fan after a quick string and don’t have issues.

Not saying some of the other stuff above couldn’t be going on too. But I’m not suprised anymore when here in wi during winter if it’s damp enough out with a head wind. I just know I may get some bolt thrust issues going on.

Load a string of 10 at 40 grains and see what it does

Right on time with that reply in reference to my just-now-above post....

I had some head scratching, mild pressure signs the other day with factory ammo in a new 22cm barrel shooting suppressed.

The chamber seemed more smokey than I expected or had noticed before and there was greasy soot on the brass. I thought I maybe kicked some snow up and introduced some moisture.

 

[WoolyBugger]

Being that velocity is the same I think you got smoke condensation in your chamber causing bolt thrust issues. This happens to me in the winter. For range shooting I’ll use a fan after a quick string and don’t have issues.

Not saying some of the other stuff above couldn’t be going on too. But I’m not suprised anymore when here in wi during winter if it’s damp enough out with a head wind. I just know I may get some bolt thrust issues going on.

Load a string of 10 at 40 grains and see what it does

I’m guessing similar conditions here in Iowa. I did notice more smoke coming from my chamber and had residue on my bolt where I don’t typically have some. Suppressor virgin so trying to figure out what’s normal

 

[Formidilosus]

This thread has me thinking....

Are certain suppressors with specific form factors (length/baffle style/quality, etc) more prone to this?

Yes. Extremely aggressive cans do show issues in high humidity and hot loads than most others.

 

[Formidilosus]

Right on time with that reply in reference to my just-now-above post....

I had some head scratching, mild pressure signs the other day with factory ammo in a new 22cm barrel shooting suppressed.

The chamber seemed more smokey than I expected or had noticed before and there was greasy soot on the brass. I thought I maybe kicked some snow up and introduced some moisture.

Hornady ammo?

 

[mt100gr.]

Hornady ammo?

Yes. 80gr X and M. Just barely sticky bolt lift and a few maybe flat-ish primers if I was being extra critical.

 

[mt100gr.]

I averaged 2900fps with both for 10 rounds thru a brand new 16.25" barrel

 

[270-300]

The suppressor has a wider hole down it than the barrel does. How would a suppressor increase pressure above the chamber pressure?

 

[Danieltremblay]

I just got my first suppressor (Unknown Reaper) and went out to rezero with my same hand loads I’ve been using the past 900 or so rounds on my gun, felt a slightly sticky bolt towards the end of the 10 round zero. After this I waited a couple min and went into a shooting drill and after a couple shots I started getting sticky bolt that progressed to heavy bolt lift and I stopped, ejector swipe on my brass.

Next day I went out to see if removing the can when I started to get sticky bolt lift would remedy this. I shot a 10 round string, waited approx 2 min then started another string. After 3 shots on the second string I had a slightly sticky bolt, next shot was very sticky. Removed the can instantly and quickly fired 2 shots, no hard bolt lift no ejector swipes on those 2 rounds

I’m not shooting a particularly hot load in my opinion. 6.5cm 140gr eldm 41.5gr h4350 Peterson brass. I’ve never noticed ejector swipe and have never had an even slightly sticky bolt.

Is this common? Is there a reason why the design of the reaper would have this happen over a different kind of can? Again this is my first one so I have nothing to compare it to and I’m fine putting this on a hunting rifle that won’t go through long strings but I will be using this particular gun for NRL and prs this summer. I would lighten the load but I’m just at power factor minimum for nrl so I’ll just put a brake back on if I have to.

That’s very interesting,
Curious to see what everyone has to say.

 

[WoolyBugger]

Yes. Extremely aggressive cans do show issues in high humidity and hot loads than most others.

Where does the reaper fall on the spectrum of aggressiveness?

 

[Formidilosus]

Yes. 80gr X and M. Just barely sticky bolt lift and a few maybe flat-ish primers if I was being extra critical.

Hornady ammo has been extremely inconsistent the last few years. I have had back to back lots of 80gr ELD-M be over 100fps MV different, including way into pressure.

 

[Formidilosus]

Where does the reaper fall on the spectrum of aggressiveness?

No problems at all that I’ve seen.