Weirhrauch HW 100 T .22 PCP Air Rifle Lockdown maintenance
The UK Government Lockdown continues and this week it was the turn of my Weihrauch HW T 100, .22 PCP air rifle for an inspection and oil up. This is the thumb hole model, which has an excellent pistol grip and perfect balance, which helps when bringing the rifle up to the eye. Mine weighs in at over ten pounds, 4.8 kilos with the scope, plus bipod, add the NiteSite combo to the scope and you are in physical workout territory. All that said, the HW100 is an extremely stable platform, that I prefer to fire prone, or rested.
This rifle is like having a Ferrari in the garage, that you use every day for work. It does the job it was designed to do and unlike the Ferrari, it does it time and time again with the absolute minimum of maintenance. The Weirhrauch had not been out of its bag for a year and yet the air pressure gauge was at the level when last used, shooting rabbits at night on a council cricket pitch. I had also remembered to switch the blue illuminated scope reticle to zero the last time out, so even that was ok.
Everything worked as expected, but I sprayed a few of the exposed working parts with Bisley Gun Oil just for good measure. Being right handed, the side lever cocking and loading mechanism on that side, lends itself to rapid multi shots, when prone, or rested.
The safety lever above, only activates after the rifle has been cocked and loaded, an instant way to spot check to see if there is a pellet up the spout or not.
The side lever pulled back in the cocking position, this area worthy of a spray of oil.
A view of the 14 pellet magazine, the thumb switch pushes the rotating pawl into position, making contact with the magazine and rotating it 1/14th of a revolution, when the cocking lever is pushed forward.
Drawing back the thumb switch, retracts the rotating pawl, allowing the magazine to be removed. This view shows the access point for the pellet and the location spring loaded ball, that aligns the magazine. The spring loaded exhaust valve sits in line with the barrel, the hammer, when released by the trigger, springing forward to push on the exhaust valve, allowing a measured amount of air out of the cylinder, through the transfer port behind the pellet, then out of the barrel. Also on the opposite side of the magazine opening, is a peg that guides the magazine down into its slot. Clever people, these Germans!
This image shows the rotating magazine pawl and the pellet probe in position. Another area for the oil spray.
When fired, the hammer springs through the magazine to tap the end of the exhaust release valve.
To be honest, the only maintenance that this rifle needs, when used in in average conditions, is a quick wipe over with an oily rag now and again, with storage in a warm dry place the optimum.
The internals of the Weirhrauch HW 100 are so finely balanced, that firing is vibrationless, the click from the hammer and a puff from the highly efficient silencer, the only signs of a pellet having been fired. With air already in the cylinder and the rifle rested, at twenty yards, I put a close group well within a 10 mm circle. For target shooting, or pest control on small vermin, this is the ideal weapon.
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