Uragan 2 likes 22 Cal CPHPs after dropping regulator pressure

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Geezerhood

Geezerhood

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Aug 16, 2022
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Southern, Utah, USA
I got this gun a while ago, but didn't shoot it much because it was way too loud due to the supersonic velocity and not that accurate with my go to pellet the CPHP. I don't want to own a 22 cal gun that can't at least shoot 10 of the CPHPs into one ragged hole at 15 yards, though a slightly larger than 22 cal hole would make me like it even more, of course. I was going to sell it but decided to dig in to the regulator first. I finally took the time yesterday to open it up and change the regulator setting. It was marked at 120. Not that difficult to do. though I wish I had a regulator pressure testing jig. I did a half turn clockwise, which was maybe too much, but it shoots great now with the CPHPs. My chrono was not wanting to cooperate so I have no idea what the velocity is. Top group is the CPHPs - 48 shots at 15 yards on my indoor range. Bottom is 12 shots of Mesiterkugelns. Both were straight out of the tin. I might end up keeping it. 80 shots dropped the bottle pressure about 45 bar. I am going to run it down to about 105 bar, guessing the reg pressure is around 100 bar, to see how many shots I can get.

  • 4-20x Sightron S-Tac
  • 48 rounds of CPHP 14.3 gr Pellets - straight out of the tin (And 12 Meisters as well)
  • Caldwell Precision Rest
  • Indoors - 15 yards
  • Hammer spring at the lightest setting possible without hogging out the stock.
  • Regulator 1/2 Turn in from the factory 120 BAR position
  • Velocity unknown - Estimated at close to 800 FPS.

1680278600453.png
 
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I have definitely put selling it on the back burner. Unfortunately I don't have a scope for it - borrowing one from another gun to do the testing.

I am going to get one of those $35 chronos to find out the velocity. I haven't been able to get my MagnetoSpeed to recognize the shots. It has worked with every other 22 cal airgun I own. Not sure why it won't with this one. I even removed the shroud / moderator and attached the chrono to the bare barrel with no luck.
 
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Geezerhood said:
I got this gun a while ago, but didn't shoot it much because it was way too loud due to the supersonic velocity and not that accurate with my go to pellet the CPHP. I don't want to own a 22 cal gun that can't at least shoot 10 of the CPHPs into one ragged hole at 15 yards, though a slightly larger than 22 cal hole would make me like it even more, of course. I was going to sell it but decided to dig in to the regulator first. I finally took the time yesterday to open it up and change the regulator setting. It was marked at 120. Not that difficult to do. though I wish I had a regulator pressure testing jig. I did a half turn clockwise, which was maybe too much, but it shoots great now with the CPHPs. My chrono was not wanting to cooperate so I have no idea what the velocity is. Top group is the CPHPs - 48 shots at 15 yards on my indoor range. Bottom is 12 shots of Mesiterkugelns. Both were straight out of the tin. I might end up keeping it. 80 shots dropped the bottle pressure about 45 bar. I am going to run it down to about 105 bar, guessing the reg pressure is around 100 bar, to see how many shots I can get.

  • 4-20x Sightron S-Tac
  • 48 rounds of CPHP 14.3 gr Pellets - straight out of the tin (And 12 Meisters as well)
  • Caldwell Precision Rest
  • Indoors - 15 yards
  • Hammer spring at the lightest setting possible without hogging out the stock.
  • Regulator 1/2 Turn in from the factory 120 BAR position
  • Velocity unknown - Estimated at close to 800 FPS.

View attachment 344629
Click to expand...
You said:

"Hammer spring at the lightest setting possible without hogging out the stock"

Has the Uragans 2 a different hammer adjustment that the Uragan?

My Uragan has the hammer adjustment not in the rear, like must of the PCP's, but behind the air hose.
 
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Emu said:
You said:

"Hammer spring at the lightest setting possible without hogging out the stock"

Has the Uragans 2 a different hammer adjustment that the Uragan?

My Uragan has the hammer adjustment not in the rear, like must of the PCP's, but behind the air hose.
Click to expand...

It looks like the Uragan 2 is completely different from the first model.

Uragan 2 - Hammer Spring Adjuster at the rear, under the buttstock.

1680536272415.png




First model Uragan with the adjuster where you said it was.

1680535907628.png
 
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Emu said:
Yes, totally different !

Thanks !
Click to expand...

You are welcome.

The gun came from the factory with the hammer spring set nearly at the lightest possible setting. I couldn't turn the tension screw out more than about 1/2 of a turn before it hit the stock, which would prevent attaching the stock unless I drilled out a cavity in the wood to let the screw protrude more from the chassis. The only way I can see to decrease hammer speed would be with a lighter spring which would be a better way to go than extending the screw beyond the chassis.

It was obviously tuned for heavy pellets as far as the regulator pressure goes. Even with 18 grain weights, it was still supersonic. It will be interesting to see how much velocity increase there is with the increasing hammer spring tension.

The trigger is the best trigger I have ever felt on an airgun. The cocking lever is super smooth and easy, also the best I have ever experienced on an airgun. The built in moderator is excellent. I don't feel the need for an additional moderator on the muzzle. The moderator "guts" appear to be very nicely made and it is super easy to clean. Just unscrew the threaded muzzle cap from the shroud with a small rod inserted through the holes in the threaded piece and slide it out. If this had factory interchangeable barrels and an externally adjustable regulator with a gauge on it, I wouldn't feel the need for any of my other higher dollar air rifles. (FX M3, Uragan 30 and a RTI Prophet 2). I could sell them all and get a Thomas for benchrest and probably be happy for quite a long time.

1680539511410.png
 
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Look Under the gun at a right-angle to the bore of that Allen screw. There is a much smaller Allen grub-screw there in a small threaded bore that is turned in to Hold the big adjuster from turning.

back the little one out about 1/2 way and now the Hammer Tension Allen “big” screw in Back of gun will turn Very easily.

I filled Little Screw bore with rubber band stuffed in and tightened a bit so the rubber is pushed up against the actual Adjuster Allen threads so can adjust hammer and it will not drift by itself.

I also did lower adjustable butt plate low as can go so I could Drill a Hole in back of stock directly aligned with the Big Allen adjuster. Now I can insert an Allen wrench Through the butt of the stock to adjust Power when tuning and I never have to take gun out of its Stock.

This is with a VULCAN 3 but the picture above of that Urgan 2 look almost identical to my Vulcan config.

Good Luck, Steve
 
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RadarMan said:
Look Under the gun at a right-angle to the bore of that Allen screw. There is a much smaller Allen grub-screw there in a small threaded bore that is turned in to Hold the big adjuster from turning.

back the little one out about 1/2 way and now the Hammer Tension Allen “big” screw in Back of gun will turn Very easily.

I filled Little Screw bore with rubber band stuffed in and tightened a bit so the rubber is pushed up against the actual Adjuster Allen threads so can adjust hammer and it will not drift by itself.

I also did lower adjustable butt plate low as can go so I could Drill a Hole in back of stock directly aligned with the Big Allen adjuster. Now I can insert an Allen wrench Through the butt of the stock to adjust Power when tuning and I never have to take gun out of its Stock.

This is with a VULCAN 3 but the picture above of that Urgan 2 look almost identical to my Vulcan config.

Good Luck, Steve
Click to expand...
Thanks for that! Yeah they really hid that sucker down under there!
 
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Hi Again SwissTrees, (again on Vulcan) the more you screw that plug In deeper in towqrds the trigger the More Hammer Spring tension you are making.

On mine I think is something like 6 2/3 turns in before the gun will NOT cock and hold with the trigger mechanism. That is just Beyong the Max Spring setting. I also notice that the gun is Not as Incremental / Linear in its response to backing away from that Max Spring Point.

I think in one of my other posts I mention how it is a pretty Imprecise Hammer Spring adjustment system compared to the refinement of a Crown MK II I also have in .22. Too bad for us, I think AGG could do much better.

i have my reg up to 140 BAR in Large Plenum Config. and will take it a little higher 145-150 to get to where I can get close to 1,000 fps with AVS 32 & 34 gr. slugs.

My goal is to Tune to 1” groups at 100 yds with ”Some Regularity“. Many show evidence and explanations of this Beast doing it And Farther Still. After some really fantastic communications with Steve at AVS Slugs (he also has a Vulcan 3 in .22) he has given me a good set of variables to add into the pot to reach the goal.

Work and home Nuts right now, but I have a little batch of 32 Flat Base in .2183 and .2192 to give it a whirl. Interestingly, Steve / AVS did say the BC of the 32-34’s IS worth hammering them harder than 26-28’s and that furthermore 32 and Above for the Vulcan Polygon barrel should definitely be Flat base slugs (and Dish Base in Below-30 gr weights.

Thats all for now and Hope I get to give it a serious effort in a couple weeks or so.
 
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No worries mate, thanks for the info. Yes, they do seem to behave very different in the hammer spring adjusting department vs most of the other brands. I was kind of baffled when I kept turning and turning it and it just kept going lol. I may just start a new U2 compact specific thread and see what other owners have come up with. Even between the other full sized Uragans, the compact seems like its a different beast. Didnt seem to find much doing a search.
 
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