Webley Axsor PCP - Flyers high and to the left.

[Evilv]

I've been singing the praises of my .22 Webley Axsor PCP. It is a very similar gun to the Logun Axsor and the FX 2000. Differences are things like stock and pressure gauge. They are in all major ways the same machine.

 

It has been on my FAC for years and only recently I had it on a chronograph and found it was barely over the 12 pound limit at 13.6ft/pounds. I hadn't used it for several years and since it was on the FAC I bought a FAC hammer spring, installed it and the rifle is now running at about 25ft/pounds (890fps with 14.3gn pellets).

 

I was well pleased with the power, penetration and shot count after the change but I have a flyer problem, and I haven't been able to get to the bottom of it after a week or so of messing about and checking.

 

About one shot in five flies high and to the left. Always the same position. Never anywhere else but high and left. I have been testing it from a good rest at 35 yards and have even tested on an indoor range. It is the same. The groups are generally tight except for these random fliers. They generally hit about 4cm off the main group at 35 yards.

 

I have minutely examined the pellets (Crossman Accupells 14.3gn).

The barrel shroud is screwed on secure at the muzzle and nothing is loose.

There are no obstructions in the pellet path

The barrel has been cleaned.

The magazine is good - no looseness, damage or anything else. The problem happens even when pellets are loaded manually and I'm using only perfect pellets.

It happens with or without the silencer being fitted so it isn't clipping and the space in the muzzle break is too great for clipping there.

The crown of the barrel looks good.

 

I googled of course and found a couple of other remarks about Axsor type rifles doing this but no solutions were offered.

 

Any experience of this please? Hopefully someone knows how to solve it.

[Evilv]

SOLVED:

 

Thanks to help from a real gentleman Bruno22rf - Chris.

 

He sent me two sample packs of pellets. One lot of AA Field and one lot of H&N Field and Trophy.

 

Both of these types performed flawlessly and stayed in tight groups - or as tight as I could manage in the breeze.

 

Then I tried my old Crossman Accupells - a pellet that had performed flawlessly at 12 ft pounds and I have used for years and years. The magazine of 8 shots now gave a four shot group of good quality and four terrible flyers about two inches away.

 

They may be good at 12 ft pounds but they sure as hell aren't at 25 ft pounds. Funny really. They look impeccable.

 

Bruno is a Diamond Geezer of the first order. Restores your faith in human beings to meet people like him.

[R1nut]

Top man!!

[Dasher]

Oddly enough I had similar results when changing power and equally settled with JSB/AA 16gn. Just for information many find Axsor and variants don't chamber JSB Heavies or Bisley Magnums/Beeman Crows very well and as a result group poorly, I also found JSB Express/Falcon Accuracy Plus chambered well, shot very well at 12ft/lb but erratic at 25ft/lb +, which I put down to the very thin skirts being distorted at raised power.

[bruno22rf]

Glad to be of assistance Tony - it's quite easy to work in a logical fault finding fashion when the Gun owner is obviously mechanically minded and usually one step ahead of me!! Might I suggest that you chrono both types and go with the best performer ft/lb wise then sit back and enjoy the fruits of your labour - BTW - you have been a pleasure to work with Sir.

[Evilv]

Glad to be of assistance Tony - it's quite easy to work in a logical fault finding fashion when the Gun owner is obviously mechanically minded and usually one step ahead of me!! Might I suggest that you chrono both types and go with the best performer ft/lb wise then sit back and enjoy the fruits of your labour - BTW - you have been a pleasure to work with Sir.

 

As I said in the PM, I was so frustrated at this problem in a previously pin point accurate rifle that I was about to chuck it in the safe and leave it there for my heirs to sort out when I pop off...

 

Thanks to your generous giving of time and treasure I have it sorted. I'd never have come to this conclusion, because to my mind a spinning damaged pellet ought to fly off at a random angle on different shots, but all of these go leftwards. It just makes no sense to me, even now. That's probably because there is something about the flight dynamics that I don't understand.

 

Were the AA Fields 16 grain or 18 grain Chris?

 

Further to Dasher's remarks, I did find the H & N pellets harder to chamber. They worked fine too though, but may prove a bit rough on the washer in the breach that seals the pellet probe and breach interface.

 

That gun is going to wreak havoc on the Jackdaws which are starting to tear up the barn roof to get in and breed.

 

EDIT:

 

I'm going to sit down with my Jeweler's Loup x10 magnification and compare the bad Accupels and the AA Field so that I can see what the differences are.

Edited March 27, 2017 by Evilv

[bruno22rf]

16 grains, Tony.

[Evilv]

Thanks Chris. I'll get some next time I'm in town. I have some crows and jackdaws to sort out now spring is here.