Evanix Sniper K hammer bounce
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Evanix Sniper K hammer bounce
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Topic: Evanix Sniper K hammer bounce (Read 1005 times))
geoff1987
Shooter
Posts: 7
yes
Real Name: Geoff
Evanix Sniper K hammer bounce
«
on:
January 26, 2018, 04:56:31 AM »
Hi all,
I have just purchased a .22 Evanix Sniper in the UK, its currently having a HuMa reg fitted, a service, trigger work done and a better shroud to silencer adapter fitted as well as hopefully some form of hammer protective cover made to hide the mechanism as it is dusty here. It will be brought over later this year to Southern Africa then tuned to 30fpe as we don't have a limit here on the permit.
Doing all this work I am hoping to make it more efficient to try get 40 shots at this power. After reading about how stopping hammer bounce helps with efficiency I would like to know from Sniper owners if hammer bounce is noticeable and if anyone has found a way to stop it without doing anything too drastic to the rifle? Also any info on mods people have made to increase efficiency?
Any advise is most welcome.
Cheers
Geoff
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Zimbabwe, Africa
AGT Vulcan 2 .25
CZ Brno 3006
Parker Hale 375
rkr
GTA Senior Contributor
Posts: 4343
Re: Evanix Sniper K hammer bounce
«
Reply #1 on:
January 26, 2018, 05:04:25 PM »
Short and stiff hammer spring with negative preload cures most of the hammer bounce.
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Finland
Huub Viking Mk2 .22 bullpup - grab'n go gun
BSA Scorpion SE .177 - 12 fpe UK model
BSA Scorpion .25 - 100M BR gun at 60 fpe
BSA Scorpion .172 - 100M BR gun/trainer at 60 fpe
Evanix Blizzard .257 - 160 fpe
Exanix Sniper X2 .45 - 270 fpe silhouette gun
Drozd Blackbird HPA - 1200 rpm full auto fun gun / meat grinder
Evanix AR6 carbine/pistol
+ a couple of springers
KnifeMaker
GTA Senior Contributor
Posts: 8224
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Real Name: Michael
Re: Evanix Sniper K hammer bounce
«
Reply #2 on:
January 27, 2018, 05:23:38 PM »
I would contact Manny, (Nordic Pirate) as it is the same action as his beloved Rainstorm II.
In fact, I have a new RS II due in here Monday!
Knife
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Central Texas
Nomadic Pirate
Guest
Re: Evanix Sniper K hammer bounce
«
Reply #3 on:
January 27, 2018, 07:20:30 PM »
RKR is correct, done that several times with various Rainstorms and works real well.
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rkr
GTA Senior Contributor
Posts: 4343
Re: Evanix Sniper K hammer bounce
«
Reply #4 on:
January 27, 2018, 07:41:37 PM »
I haven't tuned small bore Evanixes but I'd start with a length of 1.6mm wire non stainless steel hammer spring and cut it to 2mm negative preload with RVA fully backed out. You can then shorten it if needed and play with the RVA to get the power you want. With bigbores you actually need positive preload but considering the mass of the hammer it should work well with negative preload in smallbores. Also drill out the air passage to 75-80% of the caliber.
Logged
Finland
Huub Viking Mk2 .22 bullpup - grab'n go gun
BSA Scorpion SE .177 - 12 fpe UK model
BSA Scorpion .25 - 100M BR gun at 60 fpe
BSA Scorpion .172 - 100M BR gun/trainer at 60 fpe
Evanix Blizzard .257 - 160 fpe
Exanix Sniper X2 .45 - 270 fpe silhouette gun
Drozd Blackbird HPA - 1200 rpm full auto fun gun / meat grinder
Evanix AR6 carbine/pistol
+ a couple of springers
geoff1987
Shooter
Posts: 7
yes
Real Name: Geoff
Re: Evanix Sniper K hammer bounce
«
Reply #5 on:
January 28, 2018, 04:05:19 AM »
Many thanks for the advice. I'm looking forward to having a play once I have it over here and see what I can get out of it. Should be a great tool for hunting and target work.
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Zimbabwe, Africa
AGT Vulcan 2 .25
CZ Brno 3006
Parker Hale 375
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GTA
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All Springer/NP/PCP Air Gun Discussion General
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Evanix Sniper K hammer bounce