QB bolt moves when shooting

[pllagunos]

Well basically that  , my qb79 HPA bolt moves a bit when I pull the trigger...

Heard that it can waste air, sooo any ideas on what can be done? (saw someone use a rubber band, but I want something long lasting)

[pllagunos]

double post

[Tweeter]

Somebody here (I can't remember who) used a punch and hammer to make a dimple in the breech just above where the bolt sits.  It pushed a tiny bump of metal that extruded over the bolt handle to hold it down.      Sorry, that's the best way I can think of to describe it....

[Tweeter]

Ahh, I found the thread.  It was actually for a discovery but there are quite a few mothods in here that should work for the QB.

http://www.gatewaytoairguns.org/GTA/index.php?topic=4671.msg37914#msg37914

[tennx]

I read where someone used heat shrink tubing on a bolt handle...been meaning to give it a try...good luck

[SpiralGroove]

Hey Pablo,
I've had this trouble on one of my QB's.
The solution was to make the breach seal fit tighter.  Per Jason, I added built up the bolt with nail polish (under the gasket) until its surface was raised enough to further expand the breach seal, creating a very tight fit.

My Two Cents ............

[pllagunos]

What  about trying a slightly thicker o-ring instead of building up?

[pllagunos]

Ahh, I found the thread.  It was actually for a discovery but there are quite a few mothods in here that should work for the QB.

http://www.gatewaytoairguns.org/GTA/index.php?topic=4671.msg37914#msg37914

Who would've tought  some tubing or a punch mark might get my going...