HW/Weihrauch My new gun has droop.

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Most interesting discussion. It makes me appreciate that I am spoiled by mostly shooting old HW's with tall rear sights, LOL.

Dumb question from an amateur mechanic: could the manufacturer improve this situation, by mounting the sprung breech bolt so that it could rotate a degree or two off center - in other words, adjust itself to a slightly off-kilter fixed chisel? I may be misunderstanding something basic, but it seems like the droop issue stems from such a tiny dimensional discrepancy that there should be a way to work around it.
 
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MDriskill said:
Most interesting discussion. It makes me appreciate that I am spoiled by mostly shooting old HW's with tall rear sights, LOL.

Dumb question from an amateur mechanic: could the manufacturer improve this situation, by mounting the sprung breech bolt so that it could rotate a degree or two off center - in other words, adjust itself to a slightly off-kilter fixed chisel? I may be misunderstanding something basic, but it seems like the droop issue stems from such a tiny dimensional discrepancy that there should be a way to work around it.
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I guess that could work but I would think that would be harder for Weihrauch to machine right than simply installing the chisel block level. This is just sloppy work. It's nothing new I've seen it several Weihrauchs from the 80 to now. Most people that have it don't know it. They only sometimes address the sympton, barrel droop. You'd never know there was a problem with the rifle using the factory sights.

It's just like like many recent 95 family guns have droop from binding cocking arms. There the fix isn't bending the barrel. It's bending the cocking arm to allowing consistent full lock up. Probably half the new rifles sent to me have droop that needs to be fixed. There's bunches of other scarier defects in these guns to worry about. Droop is nothing.
 
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Frank in Fairfield said:
I was just wondering last night..
Did you do the TP test to see if all the air was going down the barrel??
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No I didn't feel the need to. Its making full power and the breech seal prints a full circle around the transfer port. It's very rare for Weihrauch break barrels with factory synthetic breech seals to leak. Barrel droop would have to be tremendous for it to leak. In fact I've never had a Weihrauch break barrel with factory synthetic breech seals leak. On some of my more used guns the breech seals look like total crap. They're yellowed and completely smooshed yet they hold air.

I don't change them because fresh thick new seals can cause point of impact problems until the flatten out and conform to the gun's gap. Aftermarket breech seals are a big no no with these guns. Even if they get the thickness right they're often too hard and cause droop.
 
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How do you ever hit anything with the barrel so droopy? I guess you are not using a scope on the spring tube? It just seems to me that if the gun was correct by design and assembly the barrel would be in the same axis/alignment as the spring tube.

If it is common for the lock up to vary as the seal compresses this would be an area in which these break open guns could evolve to a solution that does not produce varable barrel alignment. The thread, Still in the Game.
 
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3Crows said:
How do you ever hit anything with the barrel so droopy? I guess you are not using a scope on the spring tube? It just seems to me that if the gun was correct by design and assembly the barrel would be in the same axis/alignment as the spring tube.
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Barrel droop does not affect accuracy. It only affects using sighting systems mounted on the compression (spring) tube. Guns that are run with the scope elevation maxed out or close to it will have all sorts of problems. I addressed the fixes for that in the first post here. Yes in a perfect world the barrel should be parallel to the comp tube. Unfortunately we don't live in a perfect world.

3Crows said:
If it is common for the lock up to vary as the seal compresses this would be an area in which these break open guns could evolve to a solution that does not produce varable barrel alignment. The thread, Still in the Game
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It's not always but it is common on Weihrauchs. I can't say specifically for others because I don't work on anything else. The situation with new proud Weihrauch breech seals causing changes in point of impact problems is generally short lived and goes away with useage. Most people unwittingly experience this with new guns. The accuracy difference the proud seal causes is lost in all the other processes of breaking in a new springer. By time the gun is done "breaking in" the seal has flattened and fitted to the gun.

The Hw30/R7 has been long criticized for having an inadequate barrel detent because they are prone to erratic lock up when new or or after breech seal changes. The problem goes away with the right breech seal and some use. Pivot tention is critical on them. Especially with fresh breech seals.

Smearing the thinnest amount of silicone or Teflon based grease on a new breech seal face will help the rifle reach full lock up until the seal flattens to size. This is for all Weihrauchs.
 
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MDriskill said:
Most interesting discussion. It makes me appreciate that I am spoiled by mostly shooting old HW's with tall rear sights, LOL.

Dumb question from an amateur mechanic: could the manufacturer improve this situation, by mounting the sprung breech bolt so that it could rotate a degree or two off center - in other words, adjust itself to a slightly off-kilter fixed chisel? I may be misunderstanding something basic, but it seems like the droop issue stems from such a tiny dimensional discrepancy that there should be a way to work around it.
Click to expand...
By manufacturing tolerances it’s actually a large manufacturing discrepancy.
If you can’t maintain tolerances of a thou or two you belong in the 19th century.
 
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Today I swapped to the lower front sight. I'm still about inch low at 25 yards with most pellets. I will say just goofing around the gun is accurate given the wind and random pellets.

Other than the barrel droop the tune work is good. Its shooting 9.5 to 11.3 fpe depending pellet. Low extreme spread with the right pellets. Everything is smooth, adjusted properly and tight were it should be. It's a nice gun. It'll be a shame to take it apart.

It's still heavier to cock than I want. My shoulder was started to feel it after 30 or so shots. I'll let sit a few days cocked and see if that helps. If not I'll open her up and see about clipping coils.

That's it for today's Hw50 report.

Be well
Ron

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20250925_150538.jpg
 
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