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Joined: Dec 2008
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Campfire Oracle
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Campfire Oracle
Joined: Dec 2008
Posts: 78,300 Likes: 1 |
The other reason I got curious was more than one Campfire member has mentioned they have difficulty aiming with the 2-7x35 Fullfield II. I haven't have, and like them as well--but have to assume others have difficulty mounting the shorter 2-7x to match their aiming. This isn't because the 2-7x has less eye relief; in fact it has MORE eye-relief at 2x than the 3-9x at 3x, and the same eye relief at 7x as the the 3-9x at 9x--3.1 inches. (And yes, I have checked those numbers on my own scopes, and they're right on, unlike the eye-relied specs listed by some other scope manufacturers.)
So my best guess about why some shooters have difficulty aiming with the 2-7x is the 3-9x's SLIGHTLY longer mounting length. The ML of the 2-7x is 5.5"--with the difference at the front end of the scope, since its eyepiece/magnification ring's length is exactly the same length as on the 3-9x.
Good info JB, and you of course are one whose opinion I value and believe. I was one of those griping about the FFII 2x7...I bought one and to me the eye relief was SO bad I got rid of it immediately. Maybe shoulda tried extension mounts? ( Im no stranger to them...)
"...the left considers you vermin, and they'll kill you given the chance..." Bristoe
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Joined: Jul 2001
Posts: 60,155 Likes: 13
Campfire Kahuna
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Campfire Kahuna
Joined: Jul 2001
Posts: 60,155 Likes: 13 |
Maybe! The ER is the same.
On the other hand, the smaller objective lens of the 2-7x35 reduces the exit pupil's diameter slightly on 7x, which also reduces the "eyebox" slightly.
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck
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Joined: Dec 2012
Posts: 4,847
Campfire Tracker
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Campfire Tracker
Joined: Dec 2012
Posts: 4,847 |
You got me on that one. I don't pay attention to things like that.... You knew what it was, maybe just not what it was called. Fair enough.
"An archer sees how far he can be from a target and still hit it, a bowhunter sees how close he can get before he shoots." It is certainly easy to use that same line of thinking with firearms. -- Unknown
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Joined: Dec 2012
Posts: 4,847
Campfire Tracker
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Campfire Tracker
Joined: Dec 2012
Posts: 4,847 |
The distance between the beginning of the objective flare and the power ring. I think most schematics list it as "Length B" - I know Leupold does - but I can't find that number for this particular scope. Mike, I got curious about the "mounting length" of the 3-9x40 FFI when you mentioned, for more than one reason--but will go into more detail about that later. I just measured it on more than one 3-9x40 (and a 3-9x40 E1) and it's just about 5.75". Had never measured it before, because have never had any difficulty mounting a 3-9x40 FFII on ANY rifle, and have had them on bolt-actions chambered for some pretty long cartridges, including the .300 Weatherby. The other reason I got curious was more than one Campfire member has mentioned they have difficulty aiming with the 2-7x35 Fullfield II. I haven't have, and like them as well--but have to assume others have difficulty mounting the shorter 2-7x to match their aiming. This isn't because the 2-7x has less eye relief; in fact it has MORE eye-relief at 2x than the 3-9x at 3x, and the same eye relief at 7x as the the 3-9x at 9x--3.1 inches. (And yes, I have checked those numbers on my own scopes, and they're right on, unlike the eye-relied specs listed by some other scope manufacturers.) So my best guess about why some shooters have difficulty aiming with the 2-7x is the 3-9x's SLIGHTLY longer mounting length. The ML of the 2-7x is 5.5"--with the difference at the front end of the scope, since its eyepiece/magnification ring's length is exactly the same length as on the 3-9x. Thanks, John, that's what I was looking for. I'm thinking about removing a FFII 3-9x40 (30mm) with the German illuminated reticle that Ingwe likes and replacing it with either a regular FFII or the E1. It's on a Zastava M98, which has enough distance between the bridges that a number of newer scopes, with their longer bells and 4.5+/- mounting length, just won't cut it. Thanks again.
"An archer sees how far he can be from a target and still hit it, a bowhunter sees how close he can get before he shoots." It is certainly easy to use that same line of thinking with firearms. -- Unknown
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Joined: Nov 2013
Posts: 28,819 Likes: 6
Campfire Ranger
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Campfire Ranger
Joined: Nov 2013
Posts: 28,819 Likes: 6 |
Sounds like Covid-induced tinkering to me, Parson. Put a cold towel on your forehead and lie down for a bit; it'll pass.
BTW, I mounted the fourth sight on my crossbow yesterday. Rings for the fifth are in the pipe.
Last edited by Pappy348; 07/20/20.
What fresh Hell is this?
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Joined: Dec 2012
Posts: 4,847
Campfire Tracker
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Campfire Tracker
Joined: Dec 2012
Posts: 4,847 |
Could be! 
"An archer sees how far he can be from a target and still hit it, a bowhunter sees how close he can get before he shoots." It is certainly easy to use that same line of thinking with firearms. -- Unknown
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Joined: Dec 2012
Posts: 4,847
Campfire Tracker
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Campfire Tracker
Joined: Dec 2012
Posts: 4,847 |
Could I ask a favor of anyone who has an E1 and caliper? Can you give me the diameter of the power ring? I want to make sure my bolt handle will clear when mounted in low Weaver rings. I’m pretty sure the FFII is smaller since it’s also part of the eye piece, but I don’t want to buy an E1 if I need to use higher rings.
Thanks
"An archer sees how far he can be from a target and still hit it, a bowhunter sees how close he can get before he shoots." It is certainly easy to use that same line of thinking with firearms. -- Unknown
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Joined: Jan 2012
Posts: 3,150
Campfire Tracker
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Campfire Tracker
Joined: Jan 2012
Posts: 3,150 |
Could I ask a favor of anyone who has an E1 and caliper? Can you give me the diameter of the power ring? I want to make sure my bolt handle will clear when mounted in low Weaver rings. I’m pretty sure the FFII is smaller since it’s also part of the eye piece, but I don’t want to buy an E1 if I need to use higher rings.
Thanks
Rev I get 1.74”.
Last edited by AKduck; 07/30/20.
Yup.
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Joined: May 2009
Posts: 17,266
Campfire Ranger
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Campfire Ranger
Joined: May 2009
Posts: 17,266 |
Has anyone played with tracking on them at all?
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Joined: Sep 2009
Posts: 3,007
Campfire Tracker
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Campfire Tracker
Joined: Sep 2009
Posts: 3,007 |
I've never had any problems with the eye box on the Burris FFII's that I have, although all of them are 3-9x so I can't comment on the 2-7x.
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Joined: Dec 2012
Posts: 4,847
Campfire Tracker
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Campfire Tracker
Joined: Dec 2012
Posts: 4,847 |
"An archer sees how far he can be from a target and still hit it, a bowhunter sees how close he can get before he shoots." It is certainly easy to use that same line of thinking with firearms. -- Unknown
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