Me

engfred said:

The biggest advantage of a large Plenum is when tuning for high fpe. Example my FX crown has a rather small plenum so when you want to shoot slugs it soon hits max.... And its also getting airhungry.. The promblem is you set the reg. To like 150 bar. With a small plenum and high fps you hit the valve hard with the hammer.... the problem is the plenum pressure drops a lot. And by the low plenum pressure there is reduced helping force from the remaining air pressure in the plenum to close the valve again. This means the valve is open too long time.... this means waste of air and further pressure drop, and dirty air behind the projectile.... the double size Plenum means the remaining air pressure will only drop less than half for the same slug speed.... But this differece is less notible with air riflees with balanced valves ....

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I wouldn´t call it air hungry as long as you dont go too close to plateau levels like you mentioned, but you definitely get fewer shots per fill with higher reg pressures.
My experience tells me that the higher the regulator and\or the plenum= more efficient the air usage will be.
As for the rest of your statement i completely agree, have a Crown mk1 and it is the most forgiving and tuneable pcp i used as far as extreme spread is a concern (not my thing though unless shooting at ELR)

PumaCarl said:

I'm not sure what your data says, but it seems to me that with the exception of the 68gr .30, you always had too much plenum with the 146cc size. Wouldn't we need the shot string numbers to see the fluctuations to see if that were so?

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As for extreme spreads mentioned before i would say it depends like @nervoustrig stated

''3. For exceedingly large plenums, there is a potential that firing will consume so little air as to not produce a sufficient pressure drop to cause the regulator to cycle open. The extreme spread may be negatively affected as a result.''

it will negatively affect extreme spread by augmenting the amount of hammer strike variance between shots and if the regulator does not cycle between every shot.
I can say it is possible to shoot 67gr slugs .25 @890 and at the same time 13gr .177 @920 and have 10~20fps max extreme spread at lower energy with 146cc at 140bar as long has you have a lubed and polished clock. (I stopped using wildcat\maverick hammer wheels for this reason) if you want to optimise the rifle you must be prepared to try out different setups and like what you are doing..

The .25s shoot lights out in my Ataman bullpup.

Amazon has the same one even cheaper. They also have a magnetic closure model

Interested in a compact .22 bullpup, the Uragan comes to mind. Please pm if you have one you are interested in selling. Thank you.

you guys did see this right?

Nice story. My cousin had a rabbit years ago that amazed me. It thought it was a dog! You could call it and it would run to you and it would play just like a puppy. That was over 40 years ago and I still remember that rabbit.

Have you done a decibel meter test comparing them? In a way I like the look as its different, almost like something ive seen in a futuristic laser rifle. In a way i like the traditional ODB.

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Bud-sc said:

Groups at a 100 yards mine Taipan is the 700mm in 25cal...love this gun!!!

View attachment 468496

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great 100 yard group!!!

Sled..

My ATN x-sight 5, 5x25x experience delivered this Friday:

Had the scope out of the box for 6 hours before filling out an RMA and sending it back.

Charged the battery.....followed the instructions to update firmware ending 706....factory reset. All went well for about 20 minutes until the LCD began to flicker. Power off reset....power on.....screen froze....then green/blue blank screen. Power off reset...power on.....buttons don't work....frozen screen....then green/blue blank screen. Last chance.....Power off reset....power on....booting up.....green/blue blank screen.....that's enough.

Scope came with 426 firmware, don't know when that firmware was released but the scope was made in 2023. I've never owned an ATN product, but this experience sets the tone. Don't know what (if any QC they do ??) I'd hope this is a "one off", but reading the problems a lot of buyers have with these scopes, I don't think it's a one off. It's obviously not a firmware issue since the scope was running the most recent version. Hard to believe the company wouldn't hold shipments until they solved the issues with the scope. It is what it is. On to a different scope........

There was a time when these cute bastards had us on the ropes with their nightly destructive ways.
So we sought to break the destructive cycle by any means possible. Some things didn't work at all, while other things worked somewhat but overtime were refined to our environment. I posted so that perhaps others may reap some benefit from our years long quest in subduing trash Pandas. A very good and informative book "COYOTE AMERICA" thanks much guys.

This listing has been renewed

zrman27500 said:

I also have a beeman 77 (1983) and I absolutely love that rifle!

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I find that the 77 fits me well and is a very accurate rifle

2x INOCOM 480 cc, 4500 psi air tanks
$100 shipped each.

Thanks,
Ethan

Trace back your disassembly steps. Something went wrong at re assembly. I agree with Ranchibi, your TP’s may not be aligned, or you messed something up in the hammer area, where it’s not getting full blow to the valve

This listing has been renewed

I tested the 18 grain Domes and the 21.5 Semidomes in my Weihrauch HW100S and both performed very well with the 18 grainers coming close to beating the 18 grain JSBs, which have been the best tested so far. There were a few pellets with wavy skirts in the 21.5s but no major flaws. The 18s were simply beautiful and looked like a catalog photo. JTS pellets appear to be excellent so far.

Looking for a Helos BTR Gen2 2-12x42 in MIL. If you have one you don't want anymore let me know.

airgunmike56 said:

Good shooting, Yes I have heard they taste great, Back in the great depression a lot of sparrows were eaten .
mike

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@airgunmike56, thanks! We might be heading that way again… I have lots of multi size protein moving through my backyard… Yum!

I use PirateShip (https://www.pirateship.com/) all the time. Before I used ShipStation (https://www.shipstation.com/), but I like PirateShip is much better IMHO. USPS website is not intuitive, hard to use, and they have service issues like you are having now too often. Plus PirateShip has better shipping rates .

K&L adjustable buttstock with monopod and bag rider for FX Impact. $150 shipped CONUS, payment via discreet PP F&F, please leave the notes field blank

Looking to see if anyone like to trade their BRK Ghost .22 kit (Carbine, plus or HP) for my .25HP kit.
This will includes: Barrel, probe and magazine.

or I'll sell this kit for $500 shipped.

thanks,
Bang 858-876tutu64

I had exactly that after I installed the FX Slug Power Kit's pin probe in both of my FX Impacts. My mod baffles were filled with shavings and a ton of powder and POI was shifting all over the place. I figured it to pellet clipping from the mods, however, upon further inspection my barrel was filled with lead powder. The problem was at the breach end. The pin probe and/or stock mag were feeding my slugs in cockeyed and they were shaving lead off at the xfer ports. I could actually feel slugs not feeding right every dozen or so rounds. I also stopped using the stock FX mags and moved to STUD mags and my guns are feeding smooth now and and haven't seen that debris in my barrel since.