I'm very very late to this discussion, but as someone who purchased and returned the AEA SF Sniper in .25 before then purchasing the Karma SLS in .25 I thought I should weigh in. Yes, the Karma SLS is a fairly heavily modified version of the AEA SF. The Major differences are:
- The AEA SF wouldn't cycle more than 2 or 3 shots in semi-auto, but my Karma SLS cycles perfectly
- The cocking mechanism on the AEA SF is a nightmare, involving finger contortions and a specific process. The Karma is an easy to use side lever.
- Putting the AEA in to semi-auto mode is a PITA, but putting the Karma into semi-auto mode is as easy as pulling out a button
- The Karma has a nice picitiny scope rail, but the AEA doesn't
- The Karma has a very nice full length Arca rail added to protect the underside of the air cylinder (this also makes the Karma about 1.2 lbs heavier)
- The Karma has the ability to adjust hammer spring tension, which the AEA didn't
- Both guns suffer from a nasty trigger, but the Karma does have an upgraded trigger shoe

I've put about 300 rounds through the Karma SF and would give it a B for sidelever accuracy and C- for semi-auto accuracy. I purchased this gun primarily because of the incredible reputation of Donny FL, snd I am convinced that with a bit more work I will be able to further improve accuracy smooth our that nasty trigger put. The price difference is about $500 between the AEA SF and the Karma SLS, and I would say that Thuan and company have added at least that much value to the gun. I'll let you know how the "trigger" refinement goes when I finally get around to it.

So i ended up buying this beauty! At least in my eyes it looks good.

Any recommendations for scope and rings? Prefer a 24x scope that is light weight too. FFP or SFP doesn’t matter because I shoot at fixed magnification.

Can I get away with a 50mm objective scope and low mounts?

It's amazing the hills we are willing to die on.

For me, I don't care if it's mil or moa, it's all potential precision, not actual precision.

You'll have to remove the nut behind the glass to get actual precision.

Theoben Eli. said:

These new piston seals are 34.8mm
Thats way to for mine eli they are 34.4mm.
Im thinking you must make them fit

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Can always remove material, can't add to it...

Hi guys

can someone tell me how long is his/hers original 290cc aluminum cylinder? i want to relace it with a huge 700cc carbon cylinder 300bar which is 41cm long but would like to know how long is the original one..
i don't have my gun yet, i just ordered online yesterday (here in Germany) and will not see it for good 2 weeks..

i want to up my shot count by a lot (50-60 shots) because with the original cylinder i get 20 shots if lucky running 50-60gr pellets/slugs..

i want the 700cc for the air capacity but i also hate the way a 600mm barrel looks with a short 480cc bottle- it looks so exposed and thin..

i want to fill that gap and hope the 700cc bottle which measures 41cm will fill that gap right up to the muzzle..

Lewis said:

Somehow I expected to see a reference to our old member YO! previously Odoyle.

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YO!

Lol...

Hi. Has anybody made compact version of deltawolf? with 300cc bottle and short barrel?

Like a BRK ghost compact

Thank you for the discount! I ordered some parts and received them in perfect condition in only 3 days!

Chukar60 said:

I did the same thing with my 600mm Maverick 22 liner. After spending several hours trying to get it to shoot like it used to I gave up and ordered a new liner and dozen of the O rings that were on the liner from the factory.
Maybe they work better without bonding them, but the CF liner I got was loose enough that it moved up and down the liner easily. I didn’t want it sliding up and down the liner so bonded it with epoxy. Maybe that was my mistake?

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Best use I found for the CF liner was to push the orings back down the barrel in an attempt to space them to get it back to shooting as it did originally. Which it never did which lead to trying the bonded method, regret ever taking it apart to begin with. You would really think FX would test and add these liners at the factory instead of peddling them as a do it yourself improvement. As you can see I'M NOT OVER IT YET, lol.

Chukar60 said:

If you are adjusting the regulator down You need to remove the bottle then dry fire it until you hear the plenum bleeding down. Wait until the plenum gauge reads zero. Then you can adjust the reg down. Another way to get it to bleed the plenum is to adjust the reg screw counter clockwise slowly until you hear the plenum losing air. Again, wait until the plenum gauge reads zero before adjust ing the reg down.
If you are just dialing the Macro or Micro wheel, no just make sure the gun is not cocked.

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Thank you.

The grub screws on the breech locks the barrel in place, if anything the clamp on the end will just slows things down if you happen to losen the grub screws while under pressure turning it into a spear gun.

Troy Bakel said:

The "Aerodynamic Jump" diagrams only apply to the projectile+chamber+bore+crown combination that does not result in "Lateral Throwoff" due to projectile in bore yaw or weight assymmetry.

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Aerodynamic jump diagrams apply to just what they say they are, aerodynamic jump. By definition, everything you mention does not affect aerodynamic jump in any way, which is purely down to the gyroscopic reaction of the projectile to the aerodynamic moments produced by a cross wind.

Today I tried my "clone" of Ed Canoles barrel tweaker on my HW30 at 20 yards. It was shooting low and to the left, but today it was mostly low and a little to the left, POA to POI with
the Sightron S1 optically centered. This is the first time I've ever tried bending a barrel, and it wasn't too bad, a lot of trial and error type thing.

Barrel tweaker I finished yesterday.


Here was the first attempts this morning

Then after several more adjust and shoot, repeat.
I ended up at less than 1/2" POA to POI with my optically centered Sightron, so, I'm pleased with that result.

No bluing was harmed in this experiment.
Next up, I'll try another go with the oring piston seal when it's warmer outside.

Trucker3573 said:

This is the best option. Fx-idis is a real thing. Everyone thinks they need to add a bunch of stuff that will have you back here with even more problems before they even shoot the gun. It’s amazing

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It is the epidemic that keeps on giving. Never a shortage of folks on the forum wanting to know how to create issues with their guns.

That's funny. Just waiting for these guys to get in from hunting and reply on this post! Because after all why have the king and not hunt something!

I've done quite a bit of business with them and Nick is above average.

Glad you got it sorted.

-- Matt

and that was it, well it is cheap enough at 75 buck all could have one

Thank you i worked it out, have a merry christmas, cheers

Very nice, I'm going to be tuning mine to Zan 25.5gr slugs at about 920fps.

The last monthly match for 2025 is now posted on the club website


Merry Christmas everyone!

Ya mike Baker is the man.You can talk to a live person.He's got a lot of old stuff too"

AlanMcD said:

Here is a great read on another forum. It may be on here somewhere too, but I have this link handy: https://www.gatewaytoairguns.org/GTA/index.php?topic=182738.0

I do have a couple of the Huma Mod 40 units and find them to be very good - better than than the DonnyFL Tatsu I also have, and on par with a Hugget Mini Magna I also have. The Huma's are great in that they are modular, so you can change the length to suit the amount of dampening you need. I will say both of mine are the older style with the felt inserts vs. the new plastic insert "Avalanche" units - I did buy an Avalanche insert to try in mine and I did not find it as quiet as the rolled up felt, at least on my guns which all have shrouds.

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HUMA. One, and done!

Thanks for the info , guess AOA is sending JSB Exact Monster 22RD Shallow, I have yours written down thanks

6gun said:

This is rough approximation on bc with similar projectiles.

View attachment 535274

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thank you!

Omps2 in Italy (the place with the most Diana parts, them specializing in it) has a D48 stock available: