FX Crown .177 at 20 and 50 meters
- Thread starter Arvid
- Start date
Someone at AoA told me that if I want to shoot .177, to pick something other than FX. He said the FX rifles are better in .22 and .25 calibers than they are in .177.
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960 with a .22 15.89g, has very very little trajectory advantage over an 8.44g .177 at 780 UNTIL you go past about 45 yards, I dont shot airgun past 50 so it's irrelvant to me, that was all I was saying.
Impact energy is all you really gain with airguns that have more power than 12FT at distances upto 45-50 yards, what you gain in power you defintely loose in accuraccy, pretty much nothing will shoot better than a 12FT .177 match rifle like a Steyr or Anschutz, however I do believe the Redwolf in .177 may just have broken that mold!
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Lol. Same here....so I bought my .177 Impact X from Airgun Depot. Called AOA first . Guess Airgun Depot's best sales person works at Airguns of Arizona.
That's 5 @ 30 yards...good enough for me.
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SureHopefully this weekend.
Hello John.
Sorry for the late reply. I finaly got time and to do some testing.
First target: 10 shot with JSB 8,44 before i adjusted fps. I wanted to see how they did at high speed.
Second target: 10 shot JSB 8,44 at 780 fps.
Third target: 10 shot with JSB 10,34 at 973 fps. (The text in target say i used my AA S510, but i used my FX Crown.)
Fourth target: 10 shot with JSB 10,34 780 fps.
Fifth target: 10 shot with JSB 13,43 at 780 fps.
Sixth target: 10 shot with JSB 13,43 at 650 fps.
I know that you didnt ask about the 13,43, but the tin was at my shooting bench, so why not
Due to bad weather and wind the was no use to shoot at 50 m. Anyhow, it seems that you can slow these pellets down quite a bit and get great accuracy at 20 to 30 meters. The JSB Beast 16,2gr shoots almost hole in hole from 730 to 810 fps (and maybe higher fps, i have not tested yet). BUT wont even hit the target stand at 50 meters at these fps. So i guess the 16,2 needs more fps to be accurate at longer distances.
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G
Guest
Guest
Thank you. As I suspected the lighter three pellets groups tightened up a bit at slower speeds. Thanks for taking on my request.
John
John
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What are you talking about? The 8.44grain should be pellet on pellet. At 20m. Come on. Maybe it is OK for you, I certainly have higher expectantions.
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G
Guest
Guest
Please post your groups shooting the same model gun shooting the same pellets at the same speeds.
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just ask the shop if this is how they are supposed to perform. i dont know honestly, but 10-20years old springers can print tighter groups. I am not here to argue. I am just saying i have seen better. Maybe they can swap it for another piece. i would not be satisfied with a repair. swap will give you more confidence.
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Totaly agree, and its not ok for me. I’m in the prosess talking to the shop where i bought it. The FX Crown is a lovely gun, but should do better.
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Maybe you should try different reg pressure? It could be the current reg pressure you have doeas not give the best results because of harmonics in the gun disturbing the accuracy. What you can do is start from 80-90 bar, and measure your max speed at given reg pressure, and try the available hammer spring settings below that speed. I recently bought a .177 barrel from my crown, and for the moment the 10 grains JSB shoots good at 840-850 fps with reg pressure at roughly 90 bar, at 25m. The heavier pellets doeas seem to shoot pretty good in your gun, so maybe if you want to get the 8, and 10 grains to shoot good, you have to tune the gun down with lower reg pressure and velocity?
Just make sure you read the manual first, if you have not adjusted reg before, as you can destroy it if you do it wrong.
Just make sure you read the manual first, if you have not adjusted reg before, as you can destroy it if you do it wrong.
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I did re-read your posts, and saw you was also testing some velocitys for another guy.
It may not be possible to get all the different pellet weights to shoot the best possible by only adjusting hammer setting. If you want to get the best possible accuracy, you might have to pick one pellet, and tune the gun for that. If you usualy does shoot no more than 20-30 meters. I would try tune the gun for the 10 grains only, starting with lower reg pressure, and work upward step by step.
It may not be possible to get all the different pellet weights to shoot the best possible by only adjusting hammer setting. If you want to get the best possible accuracy, you might have to pick one pellet, and tune the gun for that. If you usualy does shoot no more than 20-30 meters. I would try tune the gun for the 10 grains only, starting with lower reg pressure, and work upward step by step.
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aoa is plenty smart. i do not see (but they may) offer a fx crown in.177 & their .177 barrel kits are sold as,, all sales final..
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All of the targets show vertical stringing. This could range from inconsistent hold to lots of other things. Too much cheek pressure can make the projectile go left or right. Inconsistent follow through can lead to expansion. At least you're testing it correctly at in ranges.You don't know how many times I've seen people accuracy test at 50 yards where an entire host of adverse effects can influence the projectile, leading to the shooter to believe something is wrong with his gun, but most often blaming the scope. Your 20m groups should look like the one posted below.
This was shot with a (mechanical) non-regulated gun. .22 caliber. average 905 fps, 15.89 grain jsb. Lasered 25 yards, outdoors.
edit: I am referring to the targets on the first page.
This is the gun.
This was shot with a (mechanical) non-regulated gun. .22 caliber. average 905 fps, 15.89 grain jsb. Lasered 25 yards, outdoors.
edit: I am referring to the targets on the first page.
This is the gun.
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