My new crown 22/500 is scheduled to arrive late next week. I intend to follow what I see recommended on this site by shooting it at least 4 or 500 rounds at the factory settings to break it in before tuning it to it;'s pellet choice. My first question is... can someone who has one tell me what the factory setting will be on it when I receive it? Can you also tell me at those setting what fps it will likely shoot a 18.1 pellet? I have other guns so will be deciating this gun to shooting at 50 to 65 yards, seldon ever more. Could someone who owns one share with me your setting for this range shooting of this gun. Thank You.
FX What is a new Crown MK2 22/500 factory settings
- Thread starter PennyPincher
- Start date
Reg 100-115 b
Hammer ~15
Xfer 177/22
This should be close to 890 fps for 18.1 gr. It's at least a place to start.
Those are my settings.
Hammer ~15
Xfer 177/22
This should be close to 890 fps for 18.1 gr. It's at least a place to start.
Those are my settings.
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My Crown Mk2 .22 with 500mm superlight barrel:
(btw - It won’t take you more than 50 shots to “settle in” your new Crown Mk2)
Regulator pressure: 130 bar
Transfer Port Adjuster: Medium
Adjust hammer spring preload to shoot 18.13g JSB/FX pellets at 890fps.
Precision target shooting results - 10-ring is .125” diameter, X is .04” diameter: 30, 40 and 47 yards:
All shot with 18.13g and using FX moderator.
-Ed
(btw - It won’t take you more than 50 shots to “settle in” your new Crown Mk2)
Regulator pressure: 130 bar
Transfer Port Adjuster: Medium
Adjust hammer spring preload to shoot 18.13g JSB/FX pellets at 890fps.
Precision target shooting results - 10-ring is .125” diameter, X is .04” diameter: 30, 40 and 47 yards:
All shot with 18.13g and using FX moderator.
-Ed
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Hi,
I think bchannell's advice will get you in the right ballpark. However, there are a couple of things you might want to check first. I own two Crown MkII's, one bought new and one bought used. The new one was bought almost two years ago as a 500mm .177. It came without a separate hammer weight, just the stock 16.4 gram Hammer V7 (part #19039) and the Spring Carrier Crown (part # 19902 - first photo). While I could adjust the hammer spring tension up enough to get the 18.1 gr to fly at 880 fps, it didn't work as well with heavier pellets. So, I bought the Crown Slug Power Kit (see 2nd photo) primarily to get the spring carrier (black bit on the right) so I could use a separate hammer weight. The Tungsten hammer weight with the kit is way overkill (sold it) and I don't like the pin probes (too easy for the projectile to get pushed into the breech askew). I also bought a set of hammer tuning brass weights from Huma Air and chose the lighter of those.
The other thing you probably want to do is to adjust the Internal Hammer Spring adjuster screw (IHS) to a specific length. I measure the amount of the M3x18 grub screw sticking out of the Hammer Adjuster (part# 19909 - other black piece in 2nd photo) and keep a record of it. For a .22 I typically use 4.25mm as the amount sticking out. Then I set the reg pressure (110 bar), transfer port wheel (Medium), and Power Wheel (13-14) with the slug side of the dual transfer port on the barrel pointing down. This gives me 870 fps with an SD of 2.5 and an ES of under 9.
This is my Sketchup model of the Crown Action. The two blue pieces are the Spring Carrier from the Slug Power Kit and the Hammer Adjuster. The gray piece coming out of the Hammer adjuster is meant to be the Grub Screw. It contacts the cam on the back of the Power Adjustment Wheel when the action is cocked. That is what determines how much spring compression you get. The additional hammer weight is inside the hammer spring which is inside the actual hammer. Hope all this helps.
Cheers,
Greg
P.S. - Ed (EPG) is spot on with his .22 Crown recommendations. He is absolutely deadly with that rifle ( and also his other 15 air rifles
I think bchannell's advice will get you in the right ballpark. However, there are a couple of things you might want to check first. I own two Crown MkII's, one bought new and one bought used. The new one was bought almost two years ago as a 500mm .177. It came without a separate hammer weight, just the stock 16.4 gram Hammer V7 (part #19039) and the Spring Carrier Crown (part # 19902 - first photo). While I could adjust the hammer spring tension up enough to get the 18.1 gr to fly at 880 fps, it didn't work as well with heavier pellets. So, I bought the Crown Slug Power Kit (see 2nd photo) primarily to get the spring carrier (black bit on the right) so I could use a separate hammer weight. The Tungsten hammer weight with the kit is way overkill (sold it) and I don't like the pin probes (too easy for the projectile to get pushed into the breech askew). I also bought a set of hammer tuning brass weights from Huma Air and chose the lighter of those.
The other thing you probably want to do is to adjust the Internal Hammer Spring adjuster screw (IHS) to a specific length. I measure the amount of the M3x18 grub screw sticking out of the Hammer Adjuster (part# 19909 - other black piece in 2nd photo) and keep a record of it. For a .22 I typically use 4.25mm as the amount sticking out. Then I set the reg pressure (110 bar), transfer port wheel (Medium), and Power Wheel (13-14) with the slug side of the dual transfer port on the barrel pointing down. This gives me 870 fps with an SD of 2.5 and an ES of under 9.
This is my Sketchup model of the Crown Action. The two blue pieces are the Spring Carrier from the Slug Power Kit and the Hammer Adjuster. The gray piece coming out of the Hammer adjuster is meant to be the Grub Screw. It contacts the cam on the back of the Power Adjustment Wheel when the action is cocked. That is what determines how much spring compression you get. The additional hammer weight is inside the hammer spring which is inside the actual hammer. Hope all this helps.
Cheers,
Greg
P.S. - Ed (EPG) is spot on with his .22 Crown recommendations. He is absolutely deadly with that rifle ( and also his other 15 air rifles
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Nobody knows more about FX Crowns than Greg (NAProf). He is our resident technical expert in the 30 and 40 Yard Challenge community in the Target Shooting Challenges forum here on AGN. He’s also a top shooter with his Crowns.
However, he has modified his Crowns. Mine is bone stock except I’ve polished up the trigger and hammer.
I’d suggest using the pellet port in the barrel, rather than the slug port. Since you will be using the stock hammer weight and pellet probe - you should be able to use settings similar to mine - as our hardware will be identical.
-Ed
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My continuum factory .22 380mm maxed out with a 20.2 grain NSA slugs at 915 fps max tp,hs 150 bar ...
The factory 700mm achieved 1060 fps tp max hs max 135 bar...
No modifications all factory ...
The factory 700mm achieved 1060 fps tp max hs max 135 bar...
No modifications all factory ...
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Yep!
That email from FX-USA is one of the reasons we all miss them so much.
Not dissing Utah,
Just sayin'
Edward
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I have a Crown 2 that I purchased new June of 2024. 22 cal/500mm. Here’s how mine was set -
The regulator was set to 115, High, and 23. I do not know where the screw is set on the internal adjustment.
I shot about 500 pellets at that setting.
A magazine of 18.1 JSB Pellets gave an average 787, High 802, Low 765, Spread 37, St Dev 8.7.
A magazine of FX 15.9 Pellets gave an average of 834, High 848, Low 823, Spread 25, St Dev 7.
After lowering the pressure to 100 and setting the front power adjuster to medium:
With the wheel at 23, a magazine of 18.1 JSB Pellets gave an average 884, Spread 6, St Dev 2.6. I forgot to write down high and low. Best Spread/St Dev I’ve ever seen. Very accurate.
With the wheel at 18, a magazine of FX 15.9 Pellets gave an average of 885, High 895, Low 878, Spread 17, St Dev 5.7. Very accurate.
The regulator was set to 115, High, and 23. I do not know where the screw is set on the internal adjustment.
I shot about 500 pellets at that setting.
A magazine of 18.1 JSB Pellets gave an average 787, High 802, Low 765, Spread 37, St Dev 8.7.
A magazine of FX 15.9 Pellets gave an average of 834, High 848, Low 823, Spread 25, St Dev 7.
After lowering the pressure to 100 and setting the front power adjuster to medium:
With the wheel at 23, a magazine of 18.1 JSB Pellets gave an average 884, Spread 6, St Dev 2.6. I forgot to write down high and low. Best Spread/St Dev I’ve ever seen. Very accurate.
With the wheel at 18, a magazine of FX 15.9 Pellets gave an average of 885, High 895, Low 878, Spread 17, St Dev 5.7. Very accurate.
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Hi Kg1,
I think that what was happening with your two cases is that at the factory settings you didn't have enough energy from your hammer (in the form of spring compression and/or hammer mass) to open the valve sufficiently to get enough air to propel the projectiles fast enough to be over the bend in the speed-power curve.
*** Attached below is a video from Sub12Airgunners that talks about using the idea of the speed-power curve to tune the Crown. *****
In the second case, by turning the reg pressure down the same hammer energy will open the valve more (and perhaps longer - called dwell) allowing sufficient air to be released to propel the projectile faster (pushing you over the knee in the speed-power curve). I also think you ES and SD are the result of closing down the transfer port a bit (medium setting) which slows down the rate at which the air enters the barrel and somehow smooths out and makes the air flow more consistent. My experience says that it is very likely your accuracy improved a bunch with this tune also.
Cheers,
Greg
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Thanks Greg.
That’s good info. You’re right, the accuracy improved as well. It’s nice shooting FX 15.9 and JSB 18.1 to almost the same spot at 50 yards with just a few clicks on the wheel. The 18.1 is maybe just a bit more consistent and accurate.
That’s good info. You’re right, the accuracy improved as well. It’s nice shooting FX 15.9 and JSB 18.1 to almost the same spot at 50 yards with just a few clicks on the wheel. The 18.1 is maybe just a bit more consistent and accurate.
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