Weihrauch HW44 Air Pistol FAC Version

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The hammer adjustment nut on these doesn't have the locking grub screw to secure it like the hw100 (at least that I can see), and tends to wander.

Mine arrived shooting the 10gr jsb at 720 and then over a short time steadily decreased to around a minimum of 615 with a bell curve a peak of 670. The first symptom was initial wandering POI, then suddenly changed its favourite pellet. The way these guns and their reg systems are built, they somehow behave effectively entirely unregulated when the hammer tension is too low, bell curve and all. The only difference being the typical velocity spike as it falls off the reg. It remained deadly accurate once the plateau was reached.

Solution was a simple hammer adjustment with a tiny dab of locktite to the hammer adjuster, applied with the end of a toothpick. Been bang on 720 for 24 shots from 200-120 since, with no wake up shots or bell curve at all. It's happily shooting sub half inch at 50yds with a rest/bipod and 3-12 scope.

I bought mine from Krale, and live South Africa so sending the gun back isn't really an option for the little things.
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Do you by chance have any pictures of getting to the hammer adjuster. I talked with AOA and they said there were no adjustments. Currently, my HW44 shoots JSB 10.34's at 798 FPS but I'm only getting 17 - 19 shots. I was wondering if this is just an adjustment I can make. Thanks
 
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Thanks! This pistol in 1.77 is on my short list.
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I had not shot any of my Airguns in months, took out my HW44 yesterday and shot offhand at 36 yards. It took me several shots warming up and remembering holdover, boy was I pleasantly surprised when I seen how I did!
 
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The hammer adjustment nut on these doesn't have the locking grub screw to secure it like the hw100 (at least that I can see), and tends to wander.

Mine arrived shooting the 10gr jsb at 720 and then over a short time steadily decreased to around a minimum of 615 with a bell curve a peak of 670. The first symptom was initial wandering POI, then suddenly changed its favourite pellet. The way these guns and their reg systems are built, they somehow behave effectively entirely unregulated when the hammer tension is too low, bell curve and all. The only difference being the typical velocity spike as it falls off the reg. It remained deadly accurate once the plateau was reached.

Solution was a simple hammer adjustment with a tiny dab of locktite to the hammer adjuster, applied with the end of a toothpick. Been bang on 720 for 24 shots from 200-120 since, with no wake up shots or bell curve at all. It's happily shooting sub half inch at 50yds with a rest/bipod and 3-12 scope.

I bought mine from Krale, and live South Africa so sending the gun back isn't really an option for the little things.
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you can email this guy he made a adaptor for my aea sparrow probably have to send him the moderater so he can see what thread type and size [email protected]
 
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Can any one please tell me where the tension screw is or hammer spring I have a HW44 pistol and would like a bit more power out of it I can't find any videos or anything on this thank you so much
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Sorry, I haven't felt the need to tinker with mine. I did remove the screw at the front of the trigger guard and the drift pin at the very lower rear of the receiver and removed the lower frame/handle to look at the mechanism but did not feel the need to adjust anything. If I recall, the trigger and hammer adjustment points were visible at that point but as noted I didn't change anything.
 
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thanks i know its picatinny is that 11mm? i thought there was more then 1 size picatiny rail
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I think you are confusing dovetails (11mm or 3/8 inch) with "Picatinny". There is also Weaver which, if I recall correctly, has a bit of variance compared to Picatinny, which is standardized. The HW44 has the "Picatinny" or the wide slotted rails.
 
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