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FX  FX Impact Mk2: Pop after removing air cylinder

I think I was able to solve this issue. The old sealing under the bottle pressure gauge was rotten, replaced this with a new sealing. Also the treads from the bottle connector were not in good condition that explains the resistance while unscrewing. There was some play between bottle and connector thread, replaced the old connector with a new one.

Results  N50 Results 10/19/24 Open Grove

One of these months, i'd really like to get up to Oxnard
The major hinderance is the traffic.
From San Diego, getting there is not as much a problem since it's early morning, but the return trip home doubles in time.
a 6 hour bumper to bumper grind through LA on a weekend to go 150 mile is enough to test anyone's sanity
But i'd really like to go up there and learn.
hopefully soon
Mike
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Length of rifling?

The FX smooth twist or rifled choke idea was great, as a cost saving. If you want to know what spin rate your pellet achieves using that rifling system, measure it by means of high speed video: An effective twist of 1:36 to 1:48 may be fine for diabolo pellets, but the fact that those rifled chokes' helix angle were correct for 1:16 means twist in .22 caliber barrels, means the pellet are skidding through the choke. Which is why they tend to lead up.

In an airgun, the friction peaks as the projectile swages into the rifling initially. After that, the friction is much lower, providing the rifling is a constant pitch, and the land and groove width and height are constant. Sure, making a smooth bore uniform is cheaper, but the idea that a partially rifled barrel is superior has little merit. Sure, FX pushed the smooth twist concept as superior, until they figured out a cheap way to impress rifling into the full length of their blank barrel tubes. Now, that is superior.

As for Baikal's hammer forged barrels; I am very happy with my 46M pistol, despite the barrel being rifled full length :)

Trigger Expert

After a lifetime of working on powder guns and airguns, I can tell you that the words "match grade trigger" are waaaayyy overused in airguns. I've never seen any lead slinging tool of any power source that had a match grade trigger that wouldn't go below one pound, and usually much lower. I also think the phrase, "fully adjustable" is overused. Being able to move the trigger back and forth, doesn't me it's fully adjustable.

If you want to see a "match trigger", look at Anschutz, Steyr, FWB or any of the 10m airguns. The best and closest to match grade on a typical airgun is the HW100 trigger. It is stunningly designed and can be as good as a 10m rifle.

Another misused phrase is "two stage". A trigger that has free play before it contacts the sear for release is not two stage. A two stage trigger moves the sear during the first stage takeup and the "wall" is where the trigger is at it's release point, where any further pressure will fire the weapon.

Air Venturi  O ring size - Avenger AE Swede Plug O ring for Bottle Adapter Kit

Update: the Captain O Ring kit has one that fits. Held 4k psi for 24 hrs (longer test would be better but it didn't leak right away which is a start compared to others)

It is "L" on their list and I emailed them to get the actual size.
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Only thing is it is 70 not 90 duro so will have to see how long it lasts at 4k psi.

Thanks for the help, all!
Glad you found it! I wouldn't worry about it being 70 rather than 90. 90's are more abrasion-resistant and heat-resistant (I think), but in many cases they are not flexible enough to squish into the corner of the groove they need to seal and they leak.

stovepipe
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Fx Maverick takes black coyote

So far as the comments about the coyote being a hybrid; I guess that’s possible, however years ago I was able to take a black/dark phase coyote with pretty much identical color patterns including the white markings on the chest. That same year I was also able to take a white/cream colored coyote. The way I understand it these color phases do occur in wild populations. Any wildlife biologists in the group?
The body shape size seems typical to me for our area. It is normal for our coyotes to have slightly shorter noses when they’re young.

It's not a hybrid. You guys down there have a good chance at color phased coyotes. Better than anywhere else in the country.
Was he using artificial lights? Looks like a standard scope.
What's your boy going to do with it? Get it mounted/tanned? Sell to the taxidermy market? There is a market for off colored coyotes and that's a particularly good looking one.

M lok to dovetail adapter

It's an inferior connection for something that is going to be under load hence the reason only Airforce makes a gun with a dovetail mount under the gun and a bipod to match. No other gun does that.
You are entirely correct. I did my homework on it too and wound myself in circles before I discovered this. lol

JTS  JTS Airacuda MAX - Moderator adapter cap is stuck

I have only encountered one issue but haven't done much yet.

So far I have only filled the air gun and 24 hours later is still holding at 3300PSI.
I have not adjusted anything yet.
It is shooting 17.6 grain pellets around 870-900 FPS, and only shot about 10 pellets so far.

It is loud so I will print my LDC overnight and do actual shooting tomorrow.
Best of Luck!
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Umarex  Umarex Zelos Best upgrades

I have tried All kinds of different designs. With the area of the shroud being so small I did not notice any difference with any of the different designs. So I went with the ones that are the easiest to print and Strongest.

Here you can find everything I make for the Zelos. https://www.bravo3d.com/collections/umarex
For 7% off Use Coupon Code: FREEDOM
Gotcha makes sense thank you for the explanation!

ShinSung  Shinsung Fire Leak

I'm fairly new to PCPs, and don't know much about their workings.
I have a Shinsung Fire 201 that has a leak that I cannot figure out how to stop. I have checked the o-rings, I have blasted with air to try to seat the o-rings, I have tried filling with it upside down, and I've tried dry firing while filling
20241019_111941.jpg
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it upside down. It's a big leak. Any help is appreciated. Photos attached showing location of leak. (The spot in the circle is just a nick in the metal from removing that pain in the butt end piece.)

FX  Impact .30 tuning

I’ve had a .25 impact for years, competed with it at the PA cup and did quite well (for my first time scored a 220). I bought a conversion kit to .30 and I can’t get JSB 50.15, AEA 45’s or ZAN pellets to shoot for nothing. In .25 it would shoot a full magazine into a group at 65 yards all touching. I did get quite a bit of black grease out of the barrel when I cleaned it. I’ve tried tunes from 840fps - 900fps and it’s spraying pellets at 65 yards. 3” groups. Any general recommendations for the .30?

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