Need help with R9

[grauhanen]

The Beeman R9 is the same as the Weihrauch HW95; these rifles share the same internals as the R11 and HW98.  Vortek makes a tune kit that works for one and all of these rifles.  You do not need a lathe nor a milling machine.  That would scare most people off.  You do, however, need to make yourself a spring compressor.  Do a search and you will find how to make one that fits your needs and can be made without having to get much in the way of materials.

[nced]

The Beeman R9 is the same as the Weihrauch HW95; these rifles share the same internals as the R11 and HW98.  Vortek makes a tune kit that works for one and all of these rifles.  You do not need a lathe nor a milling machine.  That would scare most people off.  You do, however, need to make yourself a spring compressor.  Do a search and you will find how to make one that fits your needs and can be made without having to get much in the way of materials.

My spring compressor is simply a cheap bar clamp in a wooden support made from an old 2x4 and I've been using it for years. The only downside to using a cheap bar clamp like this is the rather short ram screw which requires the end plud be advanced in steps if there is a lot of preload on the spring.
Uploaded at Snapagogo.com
Uploaded at Snapagogo.com

[stevemag]

In the video I found and posted he didn't use a spring compressor.  is this misleading or maybe this guy is very strong?

[JimL911]

The gun in the video is not a full power 95. It is probably German. In the assembly video he is getting 8.3 joules, just over 6 fpe in .22.

[chiro972b]

The gun in the video is not a full power 95. It is probably German. In the assembly video he is getting 8.3 joules, just over 6 fpe in .22.

Exactly. If you have a 12 ft/lb gun you don't need a compressor.  American guns do.

[stevemag]

thanks, good to know

[Yakfoot]

I have an R-9 with about 2000 rounds down the barrel.  I would say with your situation there is a problem somewhere.  I make it a practice to fire off a couple of rounds before I go hunting because sometimes the first few shots are a little off especially if it has been sitting for a while.  The R-9 will require you to be very careful to be consistent in your hold which is something I periodically have to relearn.  Occasionally there will be a point of impact shift of maybe an inch at 25 yards from one day to the next for an unknown reason but not usually.  If I do encounter a shift I fire at least 5 rounds on paper to see what is going on because if something is getting sorted out (maybe some lube in the compression chamber) you can wind up running in circles if you start twisting scope adjustments too soon.  Some things I have learned about my outfit are as follows.  She hates, no... let me rephrase that.  She despises sandbags that a powderburner would love.  Put her on bags and the group will be about 1 1/2 inches at best.  My best groups so far have come from using shooting sticks with a fist size bag cushion (bean bag kind of thing) to rest the fore end over the pivot screws and using a sandbag to help steady the butt on my fist.  She does not like being stored lying down in a case.  It often causes a lateral movement in the point of impact which may be a scope issue, but vertical storage minimizes shifts.  Occasionally I get a whiff of burning oil but not its not a regular occurrence.  Very careful paper practice has been my best tool at learning how to shoot a springer looking for the 5 shot one hole group at 25 yards.  If you put in a kit the process should include deburring all of the metal edges leading to the compression chamber.  That is not done at the factory and if an assembler stuffed the piston into the chamber like he was loading a cannon then your seal might have been scored  or torn by a sharp edge which would mean lube getting into the chamber or a regular basis.  In that case I think you could expect some erratic performance with lube being burned out gradually then maybe recoil knocking more back in, who knows where that squirrel would run.  In short, in my experience with a new R-9, things don't sound right with you and your gun.  Last week I was experimenting with 4 different pellets.  One day I shot about 50 rounds looking for the best grouping pellets.  They were JSB Exact and FTS.  Two days afterward I sat down and fired a total of ten shots (5 shots with each pellet) after the gun's first barrel cleaning.  Both groups were one hole at 25 yards after the rifle sat for 2 days and no sighters.  I don't usually shoot one hole groups and that took a lot of concentration but your rifle should be capable of it IMO.  So that business of impacts changing as a matter of routine seems to me to indicate something is not right.  Don't discount that some of the trouble may have its origins in the details of your shooting form.  Right now I have sort of a love hate relationship with mine.  Sometimes I get really exasperated with her and ask myself why I put up with her demands.  But, "dang", she's one hot chick.

[Yakfoot]

The gun in the video is not a full power 95. It is probably German. In the assembly video he is getting 8.3 joules, just over 6 fpe in .22.

Exactly. If you have a 12 ft/lb gun you don't need a compressor.  American guns do.

I am really glad this point was brought out.  If it was the same vid I saw it was a real stunner.  Just push down a little on a pencil eraser, twist and poop out it comes.  Well, I guess the up side is that it isn't very hold sensitive.  A real gentle doll.

[D Mc]

   Thanks,  Yakfoot. That was a very helpful and informative post. It actually sounds like our rifles are quite similar.
Spring guns are new to me so I am more than willing to shoulder some of the blame for the problems I am having.  This rifle shot well right out of the box and quickly displayed to me the meaning of hold sensitivity.  So I was not to concerned with point of impact changes initially and just chocked it up to needing more trigger time.  I read all I could find about proper springer shooting techniques and implemented as much as I could.  So now I shoot off  a benched paint roller and take great care to position both myself and the rifle the same way each time. This has shown me what this gun is capable of.  Stacking pellets at 25 yards and staying in a one inch dot at 45 yards.  I can't even see things that small unless i'm looking through the scope!
  But even so and as good of a handle as I think I have, it still has the random poi shifts.  They will start off high, low, right whatever.  These are not fliers as they group, though not as tight as normal and eventually come around to hitting where they should.
  So I have decided to have my R9 worked on by  Lee,  Shootist.  He took an interest in my problem right from the start.  Having it worked on by a gunsmith of his caliber will not only correct the known areas that can be improved upon in the R9 but remove all blame from the rifle if I have a poi shift.

[Hammarhead]

The gun in the video is not a full power 95. It is probably German. In the assembly video he is getting 8.3 joules, just over 6 fpe in .22.

Exactly. If you have a 12 ft/lb gun you don't need a compressor.  American guns do.

   This isn't exactly correct, I replaced my American version  R9's spring with a JM kit without using a compressor. It is doable and pretty straight forward just like in the video. There is a couple inches of preload on the spring so you want to make sure to grasp the gun firmly while twisting the end cap against the seal. The worst part of the job for me was getting the four retainer blocks out.
   Now the disclaimer - If you are at all concerned about your ability, have any doubts, reservations or uncertainty regarding being able to complete the job safely- use a spring compressor. This post in no way advocates not using the proper tool for the job, safety first always!

[TOM aka critter99]

First the HW rifles tend to be slathered in grease from factory most likely the cause of you cold start up wandering POI

Build a spring compressor get some air rifle specific lubes and clean and lube in correct amounts

[Esee-fan]

Thanks guys, i learned a lot from this thread.

[BlueSteel50]

 If your not starting with a clean bbl it could be something as simple as the slight lead coating in the bore being cold and hard until a few shot warm and soften it bringing everything back to where it was when you shot last. It takes very little to effect  these guns ~~BS50 ~~