New FX Mav owner. Help me understand 2nd Reg

[Florida_Man]

So I have a 177 Mav compact. I haven't adjusted the regs, so I don't know the first reg setting. I installed a digital manometer at the rear. When I shoot it stays at 82-84 bar. When I leave is over night it will get to 87 bar and stay there. Is this an acceptable number?

I know acceptable is dependent on purpose. I just want to get ahead of this in case its an issue since it is brand new.
Currently my compressor is down, so I can't waste too much air I have on checking the other reg. I hope to be back running Sunday.

Its currently sending JSB 10.34gr 920 fps from factory. From my limited shooting time its a good barrel with just the Crosman Heavies I've been feeding it mostly. (25 yards)

 

[HogKiller]

My gut is telling me to check the 1st reg so you know what's going on, if it's not 30-50 higher get it there, there is a moderate possibility that you'll need to replace all of the o-rings and clean your stack but if it's holding well I'd guess they are fine. BUT, always with the BUT, a few bar creep up may be nothing, mine on my .22 and .25 have no creep up.

 

[Headshots]

I wouldn't worry about it. If your shooting outside in cooler temps , then bring it inside to warmer temps the air will expand some.

 

[Florida_Man]

I wouldn't worry about it. If your shooting outside in cooler temps , then bring it inside to warmer temps the air will expand some.

What’s cold? Haha. I’m in the treasure coast of Florida. I’m a lizard, if it dips below 60 I’m staying inside

 

[Headshots]

What’s cold? Haha. I’m in the treasure coast of Florida. I’m a lizard, if it dips below 60 I’m staying inside

Isn't your house thermostat set at 85° or so ?

 

[candiru]

With the original Wika gauge you would never had noticed this. I also have a Maverick with Sekhmet gauge, it creeps a few bar on the second reg. So what, it shoots like a......dream.

 

[HogKiller]

What’s cold? Haha. I’m in the treasure coast of Florida. I’m a lizard, if it dips below 60 I’m staying inside

Reminds me of a certain Texan I know.

 

[nervoustrig]

When I shoot it stays at 82-84 bar. When I leave is over night it will get to 87 bar and stay there. Is this an acceptable number?

If the hammer spring tension is set for the velocity knee (95 - 97% of peak velocity), that 5% pressure creep is nothing to be concerned about.

Whereas if the HST is adjusted too lightly, the extreme spread will suffer.

 

[Florida_Man]

With the original Wika gauge you would never had noticed this. I also have a Maverick with Sekhmet gauge, it creeps a few bar on the second reg. So what, it shoots like a......dream.

I didn't notice it on it, but it is such a small gauge my aging eyes would have a hard time seeing it.

 

[HogKiller]

I didn't notice it on it, but it is such a small gauge my aging eyes would have a hard time seeing it.

I have to use a magnifying glass, and the light had best be right.

 

[tor47]

Since the gun stays at 82-84 bar during the shooting, I would say the reg is performing well. If it creeps up over the night, just take a couple of dry fire shots before shooting. Think it is normal, and I personally would not bother about it.

 

[Florida_Man]

I have to use a magnifying glass, and the light had best be right.

1.5 cheaters here. 42 on monday and I'm falling apart

 

[HogKiller]

1.5 cheaters here. 42 on monday and I'm falling apart

Damn kid. My son is older than you are. I'm at the 3/4 mark.