GTA
Airguns by Make and Model => Weihrauch Airguns => Topic started by: samTN on April 14, 2011, 09:45:17 PM
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I own or had owned many of HW products and enjoy shooting them. I would use the open sights when the rifle has one or a scope when it does not.
Few days ago I received my brand new 0.22 HW90 but has been nothing but problems. I put through it around 100 pellets while trying to zero it open sights but I could never get it to group. I’m using two types of pellets: RWS super dome and JSB domed 15.9 gr and both giving me the same shotgun pattern. Every time I thought I was getting closer to hit a bull eye, the group would open up so bad that the pellets do not even hit the target. Or if I place one shot in the bull eye, the following two shots would hit the brick wall behind the target. They are all going east and west; north and south. I checked all the screws, all tight and nothing is loose. I’m shooting from 20 yards resting the forend of the stock above my hand on a sand bag while the other end just resting against my shoulder. What is wrong with what I’m doing.
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Nothin you need to try some other pellets, like Ftt's and cphp's, the Beeman barrels like them, Gas rams are different than shooting a spring gun, heres what I'd do if it were me, if the gun is bought new I'd try everything I could do to get to shoot before your 30 days is up! it could have something wrong with it, bad piston seal ETC but you do need to give it some breakin shooting before you can expect it to shoot well, got to give the parts time to mesh and if its still not shooting good after 500rnds send it back!
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Have you cleaned the barrel? Give it a good cleaning using a lead removing liquid like Hoppe's No 9 solvent without using any wire or bronze brushes, just solvent and clean parer napkins or cotton clothes and then try again. Give it some shots (20-30 or more) to allow the barrel to bed-in with the pellets used and then start checking the targets for results. Don't change pellet brands between shots. If there is no change then you should try heavier pellets (JSB Exact Jumbo Heavy 18.1 grains, H&N Baracuda or similar ones) - H&N Field Target Trophy in 5.54 mm cal are a very good choice for 0.22" HW barrels also. Since your rifle was made for the US market it must be configured to maximum power - therefore the pressure of the piston assembly is the higher one recommended from the factory (about 26 BARS). By adjusting this pressure to a lower level (if that does not cancel the guarantee) and simultaneously reducing the power of the rifle you can find the "sweet spot" where it works better or even fine with the pellets now used.