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General Discussion To Gateway To Airguns => Gamo Gate => : November 07, 2007, 06:14:57 AM

: Gamo Maxima
: November 07, 2007, 06:14:57 AM

Hi guys,
I just purchased a Leapers TS Scope 6x24x50, really pleased with it!
Recommended by fellow airgunner on the forum.
My problem is: We shoot at paper targets here in SPAIN. I've fitted a new Gamo Spring, but the rifle seems inaccurate, I can hit a 10mm Bull ( 28yds ) with 3 shots and then the next 3 will be an    1  1/2" away.
Could this be the piston seal? Lack of compression.

Any help Please.

Gracias John  :)

: Not likely...
: vinceb November 07, 2007, 08:34:42 AM

Do the fliers tend to be in any particular direction? What pellets are you using, and have you tried different ones?

: RE: Gamo Maxima
: November 07, 2007, 10:32:14 AM

Hi Vince, the fliers generally go low. Maybe it's the spring just bedding in.
The pellets I'm using JSB Exact 4.52.
Have tried many different pellets, the JSB were spot on till the spring broke!
One other thing are Gamo hold resistant?

Thanks Jonboy  :)

: If you mean...
: vinceb November 08, 2007, 12:43:28 PM

..."Hold sensitive", then yes, to an extent they are. Not as bad as some other rifles (the RWS34 and B26 come to mind), but not nearly as insensitive to hold as a pnematic or CO2 gun.

There's really no such thing as the spring "bedding in". A new spring takes a "set" the first time it is cocked, and might shrink a little bit more over time. But there's nothing that will change so radically from one shot to the next that the POI changes like that - and then changes back again.

Out of a reasonably healthy Gamo, a pellet will drop on the order of 2" on the way to a target 28 yards away. In order for the pellet to drop an additional 1.5", the velocity has to be on the order of about 250fps slower. That's a big drop! Virtually the only thing that will cause that sort of wild fluctuation from one shot to the next is dieseling... and if the rifle was dieseling that much, I think you'd both hear it and smell it.

: RE: If you mean...
: rkr November 08, 2007, 06:49:38 PM

Breech seal might be acting up.

: I don't think the breach seal will do that...
: vinceb November 08, 2007, 09:38:12 PM

As I mentioned, that's a LOT of inconsistency from one shot to the next.

In any event, significant breach seal damage oughta be pretty easy to detect.

: RE: Gamo Maxima
: November 09, 2007, 05:55:28 AM

Thanks vince, coud I have put too much grease in the chamber?

I do get smoke, but no loud bang, is this deisling?

Thanks jonboy :)

: What sorta grease,
: vinceb November 09, 2007, 10:38:28 PM

how much, and where?