Rifle Scopes IOR Question
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Re: IOR Question
I had started a thread asking for input on the IOR 3-18x50 and the Vortex Razor... somebody PM'd me and asked me if I realized that that the IOR tubes are screwed together. I asked Scott at Liberty about it and he said they used to be, but that he thought they were now one piece but actually did not know for sure. The one I looked at *appeared* to be joined at the erector housing.
As far as concern, yes. Threads create stress risers which means that the scope can break at that point. In addition, it's one more place to leak. In general, one-piece tubes are considered superior and pretty much standard fare these days.
John
I had started a thread asking for input on the IOR 3-18x50 and the Vortex Razor... somebody PM'd me and asked me if I realized that that the IOR tubes are screwed together. I asked Scott at Liberty about it and he said they used to be, but that he thought they were now one piece but actually did not know for sure. The one I looked at *appeared* to be joined at the erector housing.
As far as concern, yes. Threads create stress risers which means that the scope can break at that point. In addition, it's one more place to leak. In general, one-piece tubes are considered superior and pretty much standard fare these days.
John
Re: IOR Question
I have an IOR 3-18 sitting in front of me right now, how would I tell one way or the other?
I have an IOR 3-18 sitting in front of me right now, how would I tell one way or the other?
Re: IOR Question
Look very carefully at the joints. Where the tube transitions to the erector housing and the bell. It they are very sharp, well defined edges, then it's probably NOT one piece. On a one piece tube, they usually turn a little inside radius to avoid the whole stress riser thing.
John
Look very carefully at the joints. Where the tube transitions to the erector housing and the bell. It they are very sharp, well defined edges, then it's probably NOT one piece. On a one piece tube, they usually turn a little inside radius to avoid the whole stress riser thing.
John
Re: IOR Question
From the way Jrob describes it I think it's screwed together but I can't tell for sure. From the turrets forward it looks screwed in, but the eyepiece part looks to be rounded. Hell if I can tell for sure. To be honest I wouldn't worry about that, it's the scope's innards that matter when it comes to durability.
From the way Jrob describes it I think it's screwed together but I can't tell for sure. From the turrets forward it looks screwed in, but the eyepiece part looks to be rounded. Hell if I can tell for sure. To be honest I wouldn't worry about that, it's the scope's innards that matter when it comes to durability.
Re: IOR Question
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BCP</div><div class="ubbcode-body">To be honest I wouldn't worry about that, it's the scope's innards that matter when it comes to durability. </div></div>
I would have to qualify that. I used to think of scopes like fragile Swiss watches. Intricate precision devices that had to be pampered and well taken care of. That's mostly because those are the only types of scopes I'd been exposed to. But there ARE people in this world that need their scope to show up and do its job EVERY time in the worst of conditions after varying levels of abuse. And there are scope companies that make scopes designed to take that kind of abuse.
I'm not a sniper or "operator". I hunt and shoot for fun. But my thinking has changed after purchasing a scope that I've watched being blown up with Tannerite, thrown off the tower at RO and generally beat to death and still hold zero. I don't EVER have to worry about my scope.
I have no question in my mind that if I were to take a Nightforce or Razor off a rifle and beat somebody senseless with it, that it would not only work properly when remounted, but would most likely still have its zero. I would never dream of trying that with a 2 piece scope tube. The tube is the part that keeps all those important parts in place.
I personally would not own a scope with a fit together housing. There's no good reason to have to. There are to many really good scopes out there that have incredibly rugged one-piece tubes.
.02
John
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BCP</div><div class="ubbcode-body">To be honest I wouldn't worry about that, it's the scope's innards that matter when it comes to durability. </div></div>
I would have to qualify that. I used to think of scopes like fragile Swiss watches. Intricate precision devices that had to be pampered and well taken care of. That's mostly because those are the only types of scopes I'd been exposed to. But there ARE people in this world that need their scope to show up and do its job EVERY time in the worst of conditions after varying levels of abuse. And there are scope companies that make scopes designed to take that kind of abuse.
I'm not a sniper or "operator". I hunt and shoot for fun. But my thinking has changed after purchasing a scope that I've watched being blown up with Tannerite, thrown off the tower at RO and generally beat to death and still hold zero. I don't EVER have to worry about my scope.
I have no question in my mind that if I were to take a Nightforce or Razor off a rifle and beat somebody senseless with it, that it would not only work properly when remounted, but would most likely still have its zero. I would never dream of trying that with a 2 piece scope tube. The tube is the part that keeps all those important parts in place.
I personally would not own a scope with a fit together housing. There's no good reason to have to. There are to many really good scopes out there that have incredibly rugged one-piece tubes.
.02
John
Re: IOR Question
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: jrob300</div><div class="ubbcode-body">
.02</div></div>
Yeah I understand. My point is that 1 piece or 2 doesn't matter if the internals can't hold zero after it's fallen off a table or bounced around in the back of a truck. USO scopes have tubes which are insanely tough and I have seen them go down.
FWIW I like my IOR a LOT but it's not as confidence inspiring as the NF and Razor scopes I've used. I have dropped it a couple times, it's still zeroed but time and lots more rounds through it will tell for sure.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: jrob300</div><div class="ubbcode-body">
.02</div></div>
Yeah I understand. My point is that 1 piece or 2 doesn't matter if the internals can't hold zero after it's fallen off a table or bounced around in the back of a truck. USO scopes have tubes which are insanely tough and I have seen them go down.
FWIW I like my IOR a LOT but it's not as confidence inspiring as the NF and Razor scopes I've used. I have dropped it a couple times, it's still zeroed but time and lots more rounds through it will tell for sure.
Re: IOR Question
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BCP</div><div class="ubbcode-body">My point is that 1 piece or 2 doesn't matter if the internals can't hold zero after it's fallen off a table or bounced around in the back of a truck. </div></div>
Gotcha. Good point. I really don't miss my Falcon Menace for that reason. That thing was constantly in need of re-zero.
John
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BCP</div><div class="ubbcode-body">My point is that 1 piece or 2 doesn't matter if the internals can't hold zero after it's fallen off a table or bounced around in the back of a truck. </div></div>
Gotcha. Good point. I really don't miss my Falcon Menace for that reason. That thing was constantly in need of re-zero.
John
Re: IOR Question
Two piece tube. HOW they are joined together I'm not sure, but I have asked Val to answer.
Having said that, never heard of the main tube coming apart in 8 years of doing this. Objective lens ring, yes, ocular housing, a couple, but never a main tube
Scott
Two piece tube. HOW they are joined together I'm not sure, but I have asked Val to answer.
Having said that, never heard of the main tube coming apart in 8 years of doing this. Objective lens ring, yes, ocular housing, a couple, but never a main tube
Scott
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