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FX  30 cal Panthera get a gust of air?

TonyP
NAProf said:
Hi,
The most likely culprit when you are getting blasts of air out that hole on each shot is the o-ring in the valve seat which seals around the valve pin. This means you need to open up the rifle, remove the valve pin and then the valve seat to replace the o-ring.
View attachment 476824

The valve seat is part #7 and the o-ring in question is part #8. The o-ring is a 3.5 x 1 NBR70 (metric). The YouTube Channel "Sub12Airgunners" has a whole video on the disassembly of the Panthera and it shows you how to get by without special tools. Oh, except for the valve seat removal. These guys make a tool that can be bought from Bagnal and Kirkwood (UK) and I think 910Airguns also makes one.

I recently had to pull the valve seat on my Dynamic and because I had the block complely disassembled, I was able to put a small dowel rod in through the hole where the hammer goes, then into the hole where the valve pin goes and I could push the seat out.

Really not a bad job.

Cheers,
Greg
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Thanks Greg. I'll order a reseal kit and get after it. thank you
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Crosman  1322 lost accuracy- suspect barrel

delooper
Have you tried doing routine maintenance on the gun? There's a few screws that could go loose -- like if the seal between the barrel and the air reservoir starts getting loose. That could easily cause the problems you're experiencing.

I'd watch a tear-down video and then go over the primary components that could loosen, tighten them up and see if there's any problems after.

I suspect the only difference between the Canadian and US version is the transfer port between the air reservoir and the barrel, that's likely just a little more narrow on the Canadian version. You can either drill yours out or purchase a bigger one from a variety of vendors, including Crosman. They're cheap.
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Tuning  Belgian sold, French documented 1958 LP53 air pistol.

K
A last update from me.
I've given up, the pistol has won.
More than a week of daily spraying of a local Kroil alternative hasn't worked.
I tried the hole in a wooden board trick, but it couldn't find enough grip.

I'm leaving it as is, as I have a fine perfectly working pistol. I don't want to damage it.
I tried to lubricate the piston seal through the exit port with neatsfoot oil. Setting the pistol upright for a while. Manually pumping the piston.
My final fps readings stayed the same, around 380.

So the only thing I'm left with is an unused Protek upgrade kit in mainland Europe. If anyone is looking for one, message me.

Thanks again for all the help and suggestions.

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Improvements to my homemade Rifle Rest

E
ThomasT said:
Hello everyone,

I made a couple of nice improvements to the Rifle Rest that I made last year. For the front and rear “Yokes” that cradle the rifle, I originally used some 3/8" stainless round rod bent to shape. I slipped some soft plastic tubing over to rods to secure and protect the rifle.

Today I used some 1-1/4" wide stainless flat bar bent to shape to replace the rod giving a lot more surface for support and securing. After welding the flat bar to the mounting plate or rod I applied three coats of liquid rubber to protect the rifle.

Last photo shows a rifle on the Rest and with this improved rubber surface area to “grip”, it is like the gun is glued in place. There is almost no movement of the rifle even when I cock it. I shot some paper targets this morning and this thing is rock solid.

ThomasT
View attachment 476570View attachment 476571
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Gotta like guys who can do things!!
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AEA  AEA .45cal Bullpup 100 yard accuracy?

V
Cheapest .510 slugs are like $.30/ct. Good ones are $.50/ct. .45 are cheaper, but not that much. Refill time after two mags (2x6) is about 20 minutes with portable 12v pump. Shooting groups for leisure is not for big bore guns unless you bring air with you. A lot of air at high PSI.

For deer at 50-100 yards 2x2 groups is fine. 4x4 is fine, too.

When the barrel is bent the worst thing is not the lack of groups consistency. No, it will shoot more or less fine at a fixed distance. But you set the scope at 50 yards, move the target to 100, and can't hit the paper target at all. The slug flies a curve to the side, like there's extra gravity force pulling the projectile in the plane of the crooked barrel. And with pressure and FPS dropping, the curve changes a lot, too. So no real life predictability where this slug may go.
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FX  Does any one know how to remove the foster fitting to the copper pipe regulator on a bobcat

J
Hi team, I'm tracking down all the leaks I have on my bobcat and it seems the last one is coming from my foster fitting, down anyone know how to remove the foster from the copper pipe regulator for the bobcat mark 1.
I have tried top grip the black have a square ring at the top and tried turning the foster fitting but it started to bur the top black half nut hence wanted to confirm this is the correct way to disassemble this part.

1719806622970.png
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RTI  RTI valves: Traditional and Assisted?

i tested an rti prophet 1 and a p3, one has the assisted and the other the old school simple valve. to my ears the p3 had the loudest hammer strike. i cannot explain why. but i prefer the original valve. which is a more simple design no extra springs and orings and a p1 is a lighter in weight riffle
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Looking for info on a 1948 - 1950 Challenger arms corp plainsman

SteveP-52
Quite a bit more about your rifle if you haven't found this yet:
www.jimmiedeesairguns.com

The Challenger Arms Corporation Plainsman Air Rifle (Pneumatic) (1948 to 1951)

Back in October of 2017, I came across this Challenger Arms Corporation Plainsman pneumatic air rifle in a closed bid auction. The condition was unknown, however, as I already have a few Challengers in the collection and had recently written about the rifle in the pneumatic pistol article, I thought
www.jimmiedeesairguns.com www.jimmiedeesairguns.com
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What is everyone shooting for slugs out of 30cal Panthera

D
TonyP said:
70g evicerator slugs by dead lead. Those are my goto out of the panthera.. Ive tried all javlins, zans, h&n,knockouts,.
For long range kinda can not beat the 70g deadleads. Best i have tried.
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Awsome thanks for the info! I’ve got some various Griffen slugs on the way but I’ll try those evecerators too.. would you mind sharing your reg settings etc?
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