FX FX Impact M4 Extended .25 (6.35mm) with Element Helix scope - Sighting-in issue

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DutchUSER84

Member
Aug 14, 2025
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Hello everyone,

I'm seeking some advice regarding an issue I'm having while zeroing my air rifle.

I have an FX Impact M4 Extended in 6.35mm (.25 caliber), fitted with an Element Helix Gen2 6-24x50 FFP riflescope. I'm trying to zero the scope at a distance of 25 meters.

The problem is that my shots are consistently hitting high and to the right of my point of aim. I've managed to correct the windage (horizontal adjustment) successfully, and my shots are now on the same vertical line as the target. However, I can't adjust the elevation (vertical adjustment) enough. The scope's elevation turret has reached its upper limit, and I'm still hitting approximately 8 steps (clicks) too high.

This means that to hit the bullseye, I have to aim 8 clicks below the center of the reticle, which is obviously not ideal.

I've already checked the scope's mounting rings for proper alignment and tightness, and everything seems to be secure.

Is this a known issue with the FX Impact M4, or with the combination of this rifle and scope? Am I missing a fundamental step in the zeroing process? Any tips or insights from people with a similar setup would be greatly appreciated.

Thanks in advance!

Kind regards, Dutch.
 
DutchUSER84 said:
Hello everyone,

I'm seeking some advice regarding an issue I'm having while zeroing my air rifle.

I have an FX Impact M4 Extended in 6.35mm (.25 caliber), fitted with an Element Helix Gen2 6-24x50 FFP riflescope. I'm trying to zero the scope at a distance of 25 meters.

The problem is that my shots are consistently hitting high and to the right of my point of aim. I've managed to correct the windage (horizontal adjustment) successfully, and my shots are now on the same vertical line as the target. However, I can't adjust the elevation (vertical adjustment) enough. The scope's elevation turret has reached its upper limit, and I'm still hitting approximately 8 steps (clicks) too high.

This means that to hit the bullseye, I have to aim 8 clicks below the center of the reticle, which is obviously not ideal.

I've already checked the scope's mounting rings for proper alignment and tightness, and everything seems to be secure.

Is this a known issue with the FX Impact M4, or with the combination of this rifle and scope? Am I missing a fundamental step in the zeroing process? Any tips or insights from people with a similar setup would be greatly appreciated.

Thanks in advance!

Kind regards, Dutch.
Click to expand...
Just a wild guess here....if you mounted the scope directly to the rifle I suspect the barrel is not mounted correctly to the action. If you used something like a cantilever mount is it possible it is mounted backwards?
 
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DutchUSER84 said:
Hello everyone,

I'm seeking some advice regarding an issue I'm having while zeroing my air rifle.

I have an FX Impact M4 Extended in 6.35mm (.25 caliber), fitted with an Element Helix Gen2 6-24x50 FFP riflescope. I'm trying to zero the scope at a distance of 25 meters.

The problem is that my shots are consistently hitting high and to the right of my point of aim. I've managed to correct the windage (horizontal adjustment) successfully, and my shots are now on the same vertical line as the target. However, I can't adjust the elevation (vertical adjustment) enough. The scope's elevation turret has reached its upper limit, and I'm still hitting approximately 8 steps (clicks) too high.

This means that to hit the bullseye, I have to aim 8 clicks below the center of the reticle, which is obviously not ideal.

I've already checked the scope's mounting rings for proper alignment and tightness, and everything seems to be secure.

Is this a known issue with the FX Impact M4, or with the combination of this rifle and scope? Am I missing a fundamental step in the zeroing process? Any tips or insights from people with a similar setup would be greatly appreciated.

Thanks in advance!

Kind regards, Dutch.
Click to expand...
How tall are your scope rings? A laser bore sighting tool is great to have for a situation like this. You may have to get different height rings

Amazon.com : Bore Sight Laser Professional Green Laser Bore Sight Kit with 32 Adapters fit 0.17 to 12GA Calibers, Multiple Caliber Green Bright Bore Sighter Laser Powerful Support for All Gun, Rifle, Pistol : Sports & Outdoors

Amazon.com : Bore Sight Laser Professional Green Laser Bore Sight Kit with 32 Adapters fit 0.17 to 12GA Calibers, Multiple Caliber Green Bright Bore Sighter Laser Powerful Support for All Gun, Rifle, Pistol : Sports & Outdoors
a.co
 
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After replacing the OEM rail on my M3 with a full length top rail, I used my MAGPUL MBUS sights to verify rail to barrel alignment.

You can accurately set mechanical zero on these sights and 25 meters is the standard battle zero distance for these sights.

So if you are using a rail longer than the OEM rail, try Zeroing with the MBUS using the longest sight radius possible. Keep track of both front sight and rear site clicks, if one or both need excessive clicks then you have a gun issue. If you need just a few clicks to zero , then you have a scope/mounts/rail issue.
 
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