HW/Weihrauch My HW77 is Complete

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EquivalentDelta

EquivalentDelta

Member
Feb 1, 2024
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Finland
Welp…

I don’t know what’s left to do to this rifle. It’s tuned. Shooting its favorite pellet. It even has Olympic match sights now.

Just put on the Anschutz Super Iris in the front sight with a Gehmann bubble level.

This should make those 2” plates at 50m easy peasy.
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EquivalentDelta said:
This should make those 2” plates at 50m easy peasy.
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God l hope so. That's a lot of top shelf stuff for 2" at 50M. My Hw30 with a simple tech sight does 2" spinners at 50 yards pretty easily. That's a gorgeous setup. If it's 177 I'm sure it'll do at least that.
 
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Mycapt65 said:
God l hope so. That's a lot of top shelf stuff for 2" at 50M. My Hw30 with a simple tech sight does 2" spinners at 50 yards pretty easily. That's a gorgeous setup. If it's 177 I'm sure it'll do at least that.
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It’s .22. And, on paper about a 2 MOA shooter. Not great but not awful.

I’ve been attacking that 2” spinner standing, unsupported. Main struggle was losing the target behind my lolipop insert and the gun canting and my shots sliding off to either side.

Here’s hoping the new tools fix those problems.
 
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i love to see when an idea is hatched and it gets done
nice older Anschutz diopter looks to be a fancy Gehmann iris with sunshade and of course the front globe sight and the sight are worth the cost of the rifle almost but the sights do not lose money they are not a ham sandwich which would be eaten and gone
do it right spend the money and be happy is the bottom line
 
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EquivalentDelta said:
It’s .22. And, on paper about a 2 MOA shooter. Not great but not awful.

I’ve been attacking that 2” spinner standing, unsupported. Main struggle was losing the target behind my lolipop insert and the gun canting and my shots sliding off to either side.

Here’s hoping the new tools fix those problems.
Click to expand...
If you're doing 2 moa at 50M with a Weihrauch 22 that's pretty darn good. Dont get me wrong. Two MOA at 50 M with any springer is pretty darn good, but Weihrauch 22 barrels are hit or miss (NPI). For them that's good. Where as I would expect that from a 177 and 20 Weihrauch.

I'm done buying 22 Weihrauchs. They're too inconsistent in power, accuracy and they're often pellets picky. I know they'll be backlash on my statements because there's a bunch of good ones out there. Unfortunately there's plenty of mediocre ones.

How does that stock comb fit you with those sights? Some people find those combs uncomfortable with the factory sights. I can't tell if your sight line is higher now.
 
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EquivalentDelta said:
Welp…

I don’t know what’s left to do to this rifle. It’s tuned. Shooting its favorite pellet. It even has Olympic match sights now.

Just put on the Anschutz Super Iris in the front sight with a Gehmann bubble level.

This should make those 2” plates at 50m easy peasy. View attachment 537352View attachment 537351View attachment 537350
Click to expand...
WOW ! like those sights , my 77 is a lefty but in .22 and an ugly laminate stock , if it was a .177 i would put a UK custom stock on it .
 
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Mycapt65 said:
If you're doing 2 moa at 50M with a Weihrauch 22 that's pretty darn good. Dont get me wrong. Two MOA at 50 M with any springer is pretty darn good, but Weihrauch 22 barrels are hit or miss (NPI). For them that's good. Where as I would expect that from a 177 and 20 Weihrauch.

I'm done buying 22 Weihrauchs. They're too inconsistent in power, accuracy and they're often pellets picky. I know they'll be backlash on my statements because there's a bunch of good ones out there. Unfortunately there's plenty of mediocre ones.

How does that stock comb fit you with those sights? Some people find those combs uncomfortable with the factory sights. I can't tell if your sight line is higher now.
Click to expand...

This setup sits about 1.1” inches over the barrel. The barrel is definitely warped a bit to the right because my zero is pretty far over to the left side of the sight.

I won’t complain though because it gives my eye enough room for my face to be pretty comfortable on the stock.

All in all, the gun fits me really well. Can’t say how it would be if the barrel were straight.
 
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I guess I spoke too soon about this thing being a completed project.

Today I took it out to get a final zero and just generally practice. Everything started off fine with the gun. Zero looked unchanged.

Just a note. It’s friggin cold here in Finland. A warm day is 0C. I take the HW straight outside and start shooting with it. No time to cool to ambient.

So today things start off looking good. But as I’m shooting the POI just keeps moving high and to the right. I made an adjustment and within 5 shots it’s back to creeping high and to the right. It’s grouping there.

Checked the front sight, still nice and tight, no movement. Checked the insert, tight. Checked rear sight, very tight and no movement. Checked the stock screws, a little loose but that didn’t fix the issue.

So now I’ve narrowed down the issue to the following:

The front sight block is rotating on the barrel from recoil torque, the seals are wearing out and I’m loosing velocity, the barrel is warping in the cold, or my rear sight base is warping in the cold…

Tonight’s plan is a complete strip, clean, and lube. New seals. Loctite every screw. Push the rear sight base further onto the dovetails. And do a rain dance to please the pellet gods.

If anyone has any ideas, I’m all ears.
 
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Since it sounds like cold is a given, would it be a good idea to let the kit cool to ambient and try? That might eliminate the cold warping theory.

If you take a break, does it still shoot at the new spot or return to original zero? I am wondering if something is heating up from friction causing a POI shift.

Certainly is a perplexing problem.
 
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EquivalentDelta said:
I guess I spoke too soon about this thing being a completed project.

Today I took it out to get a final zero and just generally practice. Everything started off fine with the gun. Zero looked unchanged.

Just a note. It’s friggin cold here in Finland. A warm day is 0C. I take the HW straight outside and start shooting with it. No time to cool to ambient.

So today things start off looking good. But as I’m shooting the POI just keeps moving high and to the right. I made an adjustment and within 5 shots it’s back to creeping high and to the right. It’s grouping there.

Checked the front sight, still nice and tight, no movement. Checked the insert, tight. Checked rear sight, very tight and no movement. Checked the stock screws, a little loose but that didn’t fix the issue.

So now I’ve narrowed down the issue to the following:

The front sight block is rotating on the barrel from recoil torque, the seals are wearing out and I’m loosing velocity, the barrel is warping in the cold, or my rear sight base is warping in the cold…

Tonight’s plan is a complete strip, clean, and lube. New seals. Loctite every screw. Push the rear sight base further onto the dovetails. And do a rain dance to please the pellet gods.

If anyone has any ideas, I’m all ears.
Click to expand...
Don't do anything just yet. Springers and Weihrauchs in particular will get POI shift from thermal changes. Put the rifle outside and let it acclimate before shooting it. The first few shots will still likely be varied. It should settle at a steady poi for 50 or so shots. The piston seal expands ever so slightly with use from compression heat and friction. The comp tube acts like a heart sink and keeps thermal expansion steady for awhile. Eventually friction changes as the gun warms. That will change the POI. Extreme cold weather and extreme hot weather shortens the window of POI stability. In the heat of the summer my guns do exactly what you're describing and there's nothing I can do about but rotate to different rifles quicker.

Also the more lubricant, the more prone it will be to cold weather POI shift. So in that aspect a tear down would be helpful. Weihrauchs don't work well for long periods in extreme temps. It mostly has to do with the full coverage cap style piston seal that experiences more thermal expansion that a hollow one used in Dianas and AAs. Cup style seals for Weihrauchs like Vortek or CAS are more prone to TE issues than the thin lipped factory design. There's also a factory thick lip design that Weihrauch uses that's no better than aftermarket cup style seals.
 
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Mycapt65 said:
Don't do anything just yet. Springers and Weihrauchs in particular will get POI shift from thermal changes. Put the rifle outside and let it acclimate before shooting it. The first few shots will still likely be varied. It should settle at a steady poi for 50 or so shots. The piston seal expands ever so slightly with use from compression heat and friction. The comp tube acts like a heart sink and keeps thermal expansion steady for awhile. Eventually friction changes as the gun warms. That will change the POI. Extreme cold weather and extreme hot weather shortens the window of POI stability. In the heat of the summer my guns do exactly what you're describing and there's nothing I can do about but rotate to different rifles quicker.

Also the more lubricant, the more prone it will be to cold weather POI shift. So in that aspect a tear down would be helpful. Weihrauchs don't work well for long periods in extreme temps. It mostly has to do with the full coverage cap style piston seal that experiences more thermal expansion that a hollow one used in Dianas and AAs. Cup style seals for Weihrauchs like Vortek or CAS are more prone to TE issues than the thin lipped factory design. There's also a factory thick lip design that Weihrauch uses that's no better than aftermarket cup style seals.
Click to expand...
Gault said:
Since it sounds like cold is a given, would it be a good idea to let the kit cool to ambient and try? That might eliminate the cold warping theory.

If you take a break, does it still shoot at the new spot or return to original zero? I am wondering if something is heating up from friction causing a POI shift.

Certainly is a perplexing problem.
Click to expand...
Both of you are certainly speaking good sense.

I tore the gun down last night. The breech seal was maybe 1mm more compressed than a new one so I swapped it.

Managed to shear the lip off of the cocking arm link. I knew about that stupid thing and just forgot the right way to do it.

Ordering spares now and looking for a pin to replace that rivet. Thanks guys.
 
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Its prettty common for the Weihrauch breech seals to squish flat. It's very uncommon that they go bad..

What i haven't seen from you is chronograph numbers. Diagnosing springers without one is like driving a car blindfolded. You might eventually get there but IF you do it's gonna be after alot of wrong turns and accidents along the way. Please tell me you have a chronograph to back you diagnosis.
 
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