Originally Posted by Ewan
One thing you should watch out for though is if you use the Hamster extension rods.
Not sure if anyone else has noticed this but i'll explain.
When I bought my extension rods from Bonds Airgun Spares I had to trim them down as I shoot HFT, having made centre to barrel from bottom of hamster was in line with HFT rules I did get some comments at my last comp, I even offered for it to be measured but I was told 'na don't worry', anyway as soon as I got home I re measured them & yes they were too long, by 1mm, very sorry about this btw.
I have now removed them both but while at the club at the weekend I noticed if the hamster was pushed all the way up it made the noise from the stripper change considerably also changed POI.
The rifle seemed to produce a spluttering noise but once the Hamster was pulled out a little, no contact made the rifle a lot quitter & POI improved, so be careful when positioning the Hamster so it does not make contact with the action inside.
One rod will hit metal the other hits the small foam pad (put there to deaden the air blast from the 'air release hole' from the reg I think), anyway just a useless bit of info for you.
If the rifle is running well you should not even have to check zero each week as it seems to keep it bang on, not allowing for any knocks you may give it though in transit :-)[/QUOTE
hmm little foam pad, never had this on mine but had noticed on another one, if its the one I think it is any attempt to block its going to seriously alter the velocity, theres been s fair few comments about it on here already, tbh the air coming outs going to blow any thing out the way , stick it over a chrono with your finger over it , youll get a good 50 fps difference .
Ok , just taken mine out of the stock , theres about 10mm clearance difference between the front and rear , are your posts that different in lenght ? ]
My posts are of equal length Vinny, as were the two extension rods as well.
What have I started :-), thinking about all this the noise I was hearing was from the top of the extension rod blocking the venting hole & creating a rasping (farty) sound but it DID effect performance, don't ask me why but POI did shift.
The foam was placed there by AA because some people were reporting air 'escaping' from underside & user's were feeling it on their hands, quite rightly they thought the FTP was a baddun & called AA. The foam is meant to 'break' the noise up & muffle it (think that's what I read when looking at buying the rifle I the first place). Bit of an engineering 'miss' putting the hole right on top of the hamster rods though I think :-)
It is without doubt a brilliant rifle, I love it, it just don't miss. I now have the tiny part of the butt hook pointing forwards (the little section at the bottom) this gives a good platform on my knee when doing kneelers the 'unorthadox' way.
All of the sponge talk did get me remembering I was having a right old time on the chrony a few times with very 'wild' fps results & I did have the extension rods fitted & pushed up
The things you learn eh!