How low are you guys able to get your optics on the rails of the impacts? I'm asking about for my m4. I want to get my helix scope as low as I can! What rings have you guys found to work?
Optics on fx impacts
- Thread starter addison
- Start date
You should be able to go to the lowest lows you can find since it has the big riser and that scope only has a 50mm bell. But you should confirm…
Because you have the rifle and scope in hand, you can test yourself and get exactly the size rings you want.
People suggest using stacks of coins on top of the rifle to mimic the rings (lay the scope on the stacks of coins), but I find that can get messy. I just use a stack of paper… lay the stack of paper across the riser and lay the scope on top. Add or remove sheets until you find the height you like. Measure the paper + half the diameter of your scope tube and you have the height of the rings you want.
Because you have the rifle and scope in hand, you can test yourself and get exactly the size rings you want.
People suggest using stacks of coins on top of the rifle to mimic the rings (lay the scope on the stacks of coins), but I find that can get messy. I just use a stack of paper… lay the stack of paper across the riser and lay the scope on top. Add or remove sheets until you find the height you like. Measure the paper + half the diameter of your scope tube and you have the height of the rings you want.
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They have them im both 30mm and 34mm.
I like using moa adjustable mounts like this one, cheap but have never failed me, and it has a locking grub unlike the FX rings so you can carry the gun by the scope and not have to worry about any shifts.
For single piece mounts with 20moa built in, I like this one.
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go too low and you wont be able to see through the scope 
or hurt your neck trying to turn your head sideways lol
or hurt your neck trying to turn your head sideways lol
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The zulus mount is pretty low, and no issues here. I can shoot with 2 eyes pretty well even.
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I have a Helix on my MK2 Impact with a 0.35" Saddle Height. I have a giant head/face but I dont see how you would want to be a whole lot lower than this. If you go too low you wont have a cheek weld, but more like a temple weld. Also note, how close my scope is to the rail. At some point you will not physically be able to go any lower and maintain correct eye relief, due to scope position. The rail on the M4 is similar to the Huma version on my MK2.
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On my hunting Impacts I strive for a scope height of 2.75”. I try not to exceed that with any gun unless there is a major comfort issue.
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Was suggested to go higher rather than lower. My scope is 3” over bore and it felt weird at first, but is great now that I have gotten used to it. Don’t need to rack my neck at all when shooting. I have Athlon Midas Tac 6-24 with 20 MOA Warne cantilever mount. Works great. I’d say 2” to 3” scope over bore would all be great.
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It is generally recommended to set up any rifle's scope height to "center in the eye" based on what feels natural and is repeatable every time when you bring the current scoped rifle up to.your shoulder and cheek weld. To do it in practice, with your eyes closed, bring up the rifle to the shoulder and cheek, aimed level and held natural like you'd aim at a deer. Shoulder it a few times like this, feeling what comes natural. Then open your eyes and "see" where the scope is at in relation to the eye. It should be close to exactly centered for height and you shouldn't have to move your head to get a good sight picture. If not centered at least vertically then get a set of rings either taller or shorter to match what you are "seeing."
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Until I got my first Impact, I was always as low as possible, no matter how uncomfortable. I tried a 1.5” mount on my Impact and realized I have been doing it wrong all these years. Go with comfort and forget what other say you should do. Now, most of my optics are high. That 2.75” range that @Vetmx mentions is pretty common height for me.
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That comes with a price to pay. Now you're all hunched up over the stock trying to get low, uncomfortably. When all you're really doing is mitigating, cant. At the expense of other factors. It would be better to get a good alignment in a more comfortable resting position with the ocular of the scope right at the eye relief you need in a resting, comfortable, form.
I am just a ragu sparrow. What do I know?
Additionally, the FX rail is too high. Why does any airgun need a rail that high off the axis of the bore?
Anyone?
Don't use high rings!!!!!!!!!!!!!!!!! lol
EDIT: Now I see what you're trying to convey. None of what I described above matters. On this gun. I would go as low as you can get. It looks silly when there is a 4 inch gap between the axis and the optical center of a scope. It is also not needed.
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Not exactly true. I would highly suggest anyone with scope height questions/curiosity watch this video. Don’t worry about what looks silly, worry about what works. Around the 12 minute mark is when it gets into scope height advantages and disadvantages. The higher the scope, the more advantageous it becomes at distance. There is absolutely a place for high mounts and you definitely should not go as low as you can just for looks. Low mounts your POI will fall off faster than with high mounts. There are advantages to both.
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I have found that for me, dependin on the rifle between 2.4 and 2.9 is perfect. On my U2 700mm with an arken sh4 4-16x50 2.83 is perfect using a discovery single piece 20moa mount. It also allows me to shoot out to alteast 300yds with no problem, and by that I mean dialing my turrets to that distance and still have more elevation adjustment.
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