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[UPDATE: BUYER BEWARE] Quick thoughts & PSA on the new Sekhmet 25mm digital gauges

12.3.2022 Update: Do NOT buy these gauges - they're garbage and leak no matter what you do and if/when you try to contact the manufacturer, you'll get crap service. I don't think it's a coincidence that these gauges have since been drastically reduced in price to $38.99 - as if Sekhmet is admitting that they are junk (they're still not worth purchasing even at $38.99 b/c they leak). You can follow my experience with these newer 25mm gauges here:


Hello AGN:

I've been using the Sekhmet 28mm digital gauges on my rifles for a couple of years now and like them pretty well b/c they were a very nice upgrade from the problematic Edgun EDMU gauges. The Sekhmets not only have better functionality compared to the EDMU, they have a rechargeable battery that provides pretty good life between charges (whereas the EDMU's burned through batteries at an absurd rate and changing them was a serious PITA). The only drawbacks to these 28mm Sekhmets were: 1) they're overkill if you wanted a simple digital gauge for a regulator and 2) they're expensive.

I recently saw that they released a new, smaller and trimmed down 25mm version and picked up a few to use with my FX Impacts. Here is a summary of my first couple of weeks with them:

PROS:
  • They're cheaper @ $65/each compared to $96/each for the 28mm gauge
  • They're easy to use; unlike its bigger brother, there's only one function (which is to display pressure in bars) so you can quickly and easy see the regulator pressure when needed
  • They're smaller and lighter; they work much better on the FX Impact Angle Bracket compared to the 28mm and won't interfere with the cocking motion
  • They come in a nice matte black finish so there's no need to use an extra outer cover on them
  • The display has bigger numbers, which are easier to read (at the right angle/lighting - more details below in the CONS)

CONS:
  • While the numbers on the screen are bigger, the display is reminiscent of your 1984 LCD calculator so the numbers are not brightly lit up like the bigger gauges so they can be difficult to read if viewing from the wrong angle or lighting
  • At $65/ea, these are still expensive for what they are - which is a single function gauge
  • On the Impact, if you install one of these at the Regulator 1 position, you'll see some weird behavior where the readout will show your Reg 1 pressure, steadily drop about 15 bars then quickly raise back up to the normal Reg 1 pressure. This happens continuously; I can't tell if this is normal behavior for this gauge or if it was because I had a slow leak in the initial installs (more details below)
  • There is no menu option (there's no menu, period) to flip the screen so however your gauge screws into your rifle, that's how it's going to sit so you might end up having to read the gauge at an awkward angle or even upside down
And now the PSA related to the last CON above: if you are using these on your Impact or other FX rifle, you'll want to remove the 3.63x2.62mm x-ring that's current under your gauge and install the gauge using the white PTFE rubber gasket that comes with the gauge. These gauges won't properly seal with the normal x-ring and will leak no matter how you try to re-install them. When using the white PTFE gasket, you have to hand screw in the gauge very, very tightly until you can't turn it anymore with your hand - only then will it fully seal. Anything short of this will also result in a leak. This might be common knowledge when using this type of gasket but I'd only used the rubber x-rings up until now and just learned this myself.

[12.3.2022 update: I spoke too soon about the slow leaks in the original post. Shortly after this post, I discovered that the gauges still leaked and I ended up gradually tightening even further with a wrench - and, no matter what, they still always leaked. I wasted a lot of time and air troubleshooting the leaks and ended up sending them back to Sekhmet at their request...and they've yet to process an exchange or refund. I had to dispute the charge with my credit card company - really horrendously poor service from these guys.]

While I was glad to finally resolve the leaking issue, the problem with having to tighten the gauge this much (combined with the inability to flip the display on the screen) is that you'll most likely end up with the gauge installed at some random, awkward angle that might not be easy to read. With the other gauges and the x-ring, you only had to screw it in until it was snug then you could adjust the rotation slightly to an angle that was easy to read. Even if not fully tightened, the x-ring will seal once pressurized. With the 28mm Sekhmets, if that final install position was upside down, you just used the menu to flip the display 180* and problem is resolved - that's not the case with these new 25mm gauges so Sekhmet really should add that functionality to these gauges.

Here are some pics of the gauges and how they're installed on the Impact:
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HPA saves the day ...

was warm today so turned on the ac, walked by the air handler which is floor level in this house, and the floor was wet .. i checked it out and the drain pipe is clogged .. im like man, im tired ready to eat and im going to have to drag a water hose in here and make a big mess to clean up .. have no fear, i pushed a hpa hose in the line and shoved a sock around it to kinda seal it. hooked a buddy bottle to it and blasted the slime out, which shot out the opening outside .. quick and painless lol .. 5 minute job ..

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Just spend this afternoon shooting the most amazing airgun

The Daisy 753S. I was offered some new in the box at a fair price, guns are this years production. I decided to keep one. I have heard what a great shooter these are. Wow the rumor is true. First thought was the Pilk trigger tune. Since getting them I read a thread were later guns had a better trigger in them, The do, very nice two stage trigger straight out of the box. Very predictable first stage stack, than a steady nice clean break. Ones it has a 1000+ pellets though it it should be even better. I was shooting 19 yards (57feet) offhand and hitting my NRA airgun swinging ram and chicken. I was also shooting 10 meter paper airifle targets. Using JSB SCHak 8.2 flat nose pellets. The gun will shoot, and it is such a fun little gun with a big rep. Here are some pictures of this afternoon. Paper targets were shot of a make shift rest. Swingers were shoot offhand. The first paper target is a five round group. The second paper target has two flyers out of five shots. I was able to call both fliers, so not the guns fault. All shooting was done with the factory sights and the 10 meter front circle.

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Top finishes at 100Y BR - skill or luck?

For quite a while now it's been debated that 100Y BR with pellets required too much "luck" to repeatably finish near the top in the RMAC and EBR type competitions...
A counterpoint to that might be this year, where:
The truly impressive performance of both Jeffrey Hernandez and Nicolay Boldov at EBR. Nicolay finished 2nd the second year in a row (2021, 2022) after finishing first in 2019. And Jeffrey finished first Sportsman in 2021 (and 2nd overall) and first in 2022. Other notable performances were Kjell Pehrson who finished 3rd at 2022 RMAC and 4th at 2022 EBR, and Keith Gibson who won RMAC in 2021 and finished 4th in 2022. There goes that theory flying out the window that repeatable top finishes are not possible because there is "too much luck" involved at 100Y with pellets. Either that, or those guys brought a bushel of rabbit's feet with them!

Power Plenum…benefits?

I have a Taipan Vet Long .22 that I want to power up a bit for shooting 25 grain slugs close to 1000 fps. I’m using a 700mm barrel w/ barrel tension, HUMA reg, and a power plenum. Does anyone know if two power plenums would give an increase in power? Along with that…the point of a larger plenum is to have more air to maximize the power output of a longer barrel, yes? Therefore, there is no point to install a power plenum on a compact gun/short barrel, yes?

Ever ask yourself, why the difference?

Just noticed the 50yd. groups the AA510 put up, would be hard to beat that group.
Thinking this: a lot of PCPs use the LW barrels,if all of them "liked" the same pellet why wouldn't they all shoot the same?
My opinion is why not.Thus a quality PCP is no better than another!...Hoo, then it becomes a matter of personal likes.
When something is agreeable to you one tends to like it; agreeable as is easy to get along with,fits good,and not fussy.
Your PCP is no better than mine,weather you pay $$$$$ or $$,it is all in your pocket book,mean head.
People are Always asking ,"what should I get"?and there will be a lot of different answers.
This forum is skewed toward BullPups and that is what most people recommend.
I see I should have started 2 different topics,better just leave with this,Better to know what YOU want,do the research,get a good idea what is the easiest fit for you; remember in the end there should not be much difference in the accuracy,so the fit and ease of shooting should be a better way to go.

NoeBulletMolds registration [Solved]

I don't know where else to ask other than here. I tried creating a forum account for the NoeBulletMolds forum because I want to create a post for a group buy. But I'm not receiving the verification email to create my account. I haven't had a response for 2 weeks on my direct email to them either, so I can't ask them directly why it's not working. Did anyone else have this issue when signing up for their forums, and if so is there a fix?

An empyrical explanation against believers of how an air rifle works and what the regulator is for.

Lets understand how an air rifle works in order people stop playing with the regulators.

In a rifle with hammer system there are two forces in fight, the preassure on the cilinder, bottle or plenum, and the force of the hammer (spring on tensión that is release with the trigger) to open the valve and release the air to move the pellet.

The higher the preassure in plenum, the less oppening of the valve, unless you increases the tensión of the spring of the hammer.

To be able to know what is the maximum power of your rifle you can remove the regulator, dial in all preassure (tensión of the spring) of the hammer and fill the rifle to 80 bar and shoot and measure fps, then to 90 and measure again, then to 100 and measure again. Eventually you will notice a decreases of fps, that mean that the top fps your rifle can give was the previous bar filling. At that preassure you should set your regulator and then decreases hammer tensión in order that you feel the rifle to shoot smoth.

Once you find that preassure the regulator should be set there and NOT MOVED. You will nor gain anything. The regulator will keep that exact optimal preassure for the air rifle to shoot at maximum power from top preassure allowed, to the regulated preassure set.

For example my Vulcan 3. 30 Cal gets to the top fps at 140 bar. If I increases preassure. Fps start decreasing.

The only rifles on which more preassure in regulator means more fps are the HUBEN, LCS and Rattler because those rifles do not have a hammer.

In other words once you get to know the adequate preassure your regulator has to be, you should not mess with it.

I took the following image from the thread of the Brocock Ghost. It confirms exactly what I explained above:

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SOLD DFL Tanto, Bipods, RTI .30 cal mag. Now selling items separately

The bipods are knock offs but in excellent shape and work flawlessly. Both have picatinny rail quick release levers. The tanto is in like new condition as well as the RTI mag.
Shipping to USA addresses included in prices.

Both Bipods-$60
Tanto-$65 **Sold**
RTI prophet mag- $35

Thanks
Gabe
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Monday, a good day to be cocked...

Out of the curiosity of a few, and my own, I'll take on this task.

My relatively new (about 6 months old) Taipan, Veteran Compact, in .22 cal., I do not have any idea how long it sat on the shelf at the dealer.
I will take on the task of cocking, letting it sit for 7 days (+/- 3 hours), and shooting it. I'll keep track of all obvious parameters of the very lightly-scientific test.

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One note - the sight was changed a while back. Just full disclosure !
Also, because it had not been shot in some time, I did put a few rounds through it before the test began, so the gauge needle is further off of the 3000psi. But, the tell, will be between the two photos that I will post.

1. I've topped off the cylinder. As verified with the 2" gauge on storage my air cylinder.
2. I put three shots through it. With the pellet speed as measured with my MagnetoSpeed, Ver.3., as measured in fps.
3. I cocked the gun (fourth round), putting a JSB, 18.1 gr. pellet into the breach, and put the safety "on". I never use the safety's !
4. I've put the gun behind the bedroom door, standing upright, barrel up, the barrel is lightly protected with a sock to keep rocks out. Only me and two cats live here, so no one will mess with the gun.
5. The gun will sit, undisturbed for 7 days, +/- about 3 or so hours.
6. Next Monday, after lunch, I'll verify the pressure in the guns cylinder.
7. I'll reinstall the Chronograph onto the barrel.
8. I'll shoot three rounds into my foam target, recording the three speeds in fps.
9. Will photograph the pressure gauge, both now and after the week is up.

We'll see what the outcome is, both in any obvious pressure loss from the gun, and in fps per the MagnetoSpeed chronograph.
Will write everything on paper and take a picture of it, so all can see my findings.

Have I missed anything ?

Mike

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