My New .177 FX Crown Has A Low POI On First Shot Just Like My .25

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MP44

MP44

Member
Apr 3, 2015
991
107
VA, United States
Thread on my other Crown which is at FX USA now ....

https://www.airgunnation.com/topic/fx-crown-the-dreaded-regulator-creep/



Groups are only 35yds



Yesterday after it sat for a couple hours

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The first group of today on the left and the second is on the right

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Looks like I have a really good barrel but what the heck is going on with the rest of the gun???? This is ridiculous. Both guns were new and I used different scopes.

The reg gauge reads higher after sitting but only 6-8 bar but as cheap as the gauges are it could be 20+ because the tank gauge is way off from my compressor gauge. I guess this one will have to go back and I get to sit around waiting and hoping they fix it the first time 

Now I wish I would have purchased a Daystate Red Wolf
 
Try tuning it to the velocity knee...that is, just a shade under its maximum velocity. That will make it less sensitive to regulator creep. It's the same principle that applies to conventional (unregulated) PCPs, how they maintain a tight ES over a fairly wide pressure range.



I'm not familiar with all the knobs you can twiddle on the Crown but typically the way this tune is accomplished is by increasing the hammer spring tension until the velocity no longer increases. Let's say your max velocity was 920fps. What you would then do is back off the hammer spring tension until the velocity fell to about 97% of that maximum, or about 892fps in this example.



If that happens to place your rifle at a velocity where your accuracy is not optimal, you can restrict the transfer port to bring it down to the rifles preferred velocity.
 
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I did everything possible to get my 3 Crowns to perform! the only thing they did consistently, was be inconsistent!

Up reg pressure, down reg pressure, shoot a number of shots after changing settings, etc, etc, etc, etc, etc, literally dozens of tins of pellets, cleaning even a custom barrel!

Not saying they didn't shoot, they did, then they didn't unexplained massive fliers, far better shooters than me shot many groups with them and all said the same thing, inconsistent!

The Crown is a beautiful looking and handling gun, but I want something easy!

As you said earlier, I get nothing but excitement and reward from the Redwolfs, they all shoot, shoot consisitently and I can find no downsides except the price!
 
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I did everything possible to get my 3 Crowns to perform! the only thing they did consistently, was be inconsistent!

Up reg pressure, down reg pressure, shoot a number of shots after changing settings, etc, etc, etc, etc, etc, literally dozens of tins of pellets, cleaning even a custom barrel!

Not saying they didn't shoot, they did, then they didn't unexplained massive fliers, far better shooters than me shot many groups with them and all said the same thing, inconsistent!

The Crown is a beautiful looking and handling gun, but I want something easy!

As you said earlier, I get nothing but excitement and reward from the Redwolfs, they all shoot, shoot consisitently and I can find no downsides except the price!
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Sounds just like my crown, down to the custom barrels and getting better shooters to exclude me as the problem. Only difference is mine generally doesn't shoot well, ever. I'd get rid of it but for the fact that I'd get very little for it in its current state. Meeting up with an FX guru tomorrow - hopefully something good will happen or I may as well strap bristles to it and use it as an expensive, mediocre Swedish broomstick 
 
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That seems a norm, just I don’t see why you send it back when that’s how it will come back or?

some people just never learn.



it is the opposite. you have to crank up the hammer spring or lower the reg to get it well over the plateau so the reg pressure fluctuation will be masked. If the regulator is failing you have to think about that pcp as if it was unregulated. It helps with the logic/ principle of operation. It will not give so many shots and probably will get louder but more consistent output wise.



...or just dry fire it often and live with it, obviously you can’t do that when you hunt
 
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That seems a norm, just I don’t see why you send it back when that’s how it will come back or?

some people just never learn.



it is the opposite. you have to crank up the hammer spring or lower the reg to get it well over the plateau so the reg pressure fluctuation will be masked. If the regulator is failing you have to think about that pcp as if it was unregulated. It helps with the logic/ principle of operation. It will not give so many shots and probably will get louder but more consistent output wise.



...or just dry fire it often and live with it, obviously you can’t do that when you hunt
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How will this "mask" the regulator creep? IMHO all this will cause is that the 1st shot will now be Higher FPS instead of slower and you will have lower efficiency.

Look at it this way, if you adjust the spring "well over the plateau" for a reg set to 100bar, and then it creeps to 120bar the 1st shot will now be the same as if you had tuned for 120bar. This will be higher, right? Or am I missing something?
 
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I'm sorry for the OP, but his experience is not my experience. My Crown in .25 shoots much better than me. I just shot around 400 pellets yesterday from a bench, in a building (no wind) at a range of 35 meters. My regulator is set at 130 bar. I shot all through a chronograph all but 4 shots were within 4 fps at about 900 fps. I am very happy with my Crown. I have confidence in my Crown. My flyers were MY fault, not the gun. I have been in my earlier life a relatively successful competitive shooter at an international level. I understand just how expensive not having confidence in your equipment is. My advice to the OP is that if he has lost confidence in a gun, he should get rid of it. It's not about the gun, it's about your head. Those tiny gauges in these guns are not accurate enough for any other purpose other than to know when you should refill the gun. If the OP is looking for causes of inconsistency, he uses a chronograph and is very selective of his pellets and if he still can't find the cause, the cause will most likely be the shooter, not the equipment.
 
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I'm sorry for the OP, but his experience is not my experience. My Crown in .25 shoots much better than me. I just shot around 400 pellets yesterday from a bench, in a building (no wind) at a range of 35 meters. My regulator is set at 130 bar. I shot all through a chronograph all but 4 shots were within 4 fps at about 900 fps. I am very happy with my Crown. I have confidence in my Crown. My flyers were MY fault, not the gun. I have been in my earlier life a relatively successful competitive shooter at an international level. I understand just how expensive not having confidence in your equipment is. My advice to the OP is that if he has lost confidence in a gun, he should get rid of it. It's not about the gun, it's about your head. Those tiny gauges in these guns are not accurate enough for any other purpose other than to know when you should refill the gun. If the OP is looking for causes of inconsistency, he uses a chronograph and is very selective of his pellets and if he still can't find the cause, the cause will most likely be the shooter, not the equipment.
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Did you see I have two Crowns, both with the same problem and I did use a chrony, the velocity difference is posted in both threads
 
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Whether your flyers were your fault or the gun's, my advise still applies. Get rid of the guns. You do not have confidence in the Crowns. Deniability is always expensive. I have been there and done that. It makes no difference if the problem is the gun or in your head, the only solution is to get rid of the gun. You will not be happy if you don't.

To sit behind your computer and bad mouth one of the very best production air rifles made because you have occasional flyers is unfair and incorrect. No air rifle or shooter is perfect. We all strive for perfection, but perfection doesn't exist.
 
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More importantly I have 3 the same, so my chances are even greater than yours I suspect!
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How should the reader interpret your comment? For the stated flyer fault, what is the common denominator, you or FX Crown air rifles? I'm pretty sure I will not convince you the problem is the shooter. You should sell them all to shooters that will appreciate the guns. Make them happy. I love my Crown.
 
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The low shot, reg creep, valve settling are al things to be dealt with in high end air guns. Even a Thomas, Steyr and Anshutz can have these problems. I've yet to meet a competitive shooter who hasn't modded, adjusted, tuned and polished their guns internals and stock fitment. I know these SOB's are expensive and we think they should come to us perfect in a velvet bag with a pellet sized group and 150m but that isn't the case. So we are left to get that final 10% out of our high end air rifles. The game/equipment complaints are no different for PB's, thankfully our high end rifles top out around 5g. Regulators, small as they are are a finicky beast at best. So maybe replace them, or disassemble and clean them first to see if that helps.
 
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Whether your flyers were your fault or the gun's, my advise still applies. Get rid of the guns. You do not have confidence in the Crowns. Deniability is always expensive. I have been there and done that. It makes no difference if the problem is the gun or in your head, the only solution is to get rid of the gun. You will not be happy if you don't.

To sit behind your computer and bad mouth one of the very best production air rifles made because you have occasional flyers is unfair and incorrect. No air rifle or shooter is perfect. We all strive for perfection, but perfection doesn't exist.
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I would think flyers would be just that, flyers, meaning random. They are always the first shot after the gun sits for a period, always directly below the rest and are at a much lower velocity. So I do not think it is correct to call them flyers.
 
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I would think flyers would be just that, flyers, meaning random. They are always the first shot after the gun sits for a period, always directly below the rest and are at a much lower velocity. So I do not think it is correct to call them flyers.
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I really like your groups. I cannot shoot as well. I would be very happy with those. I have had pistols that shot low on the first round. It isn't catastrophic. Perhaps it was heat.....who knows, but you can live with that.
 
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