If I'm looking at it right, the MIL adjustment knob only has 18 MILS of total adjustment. Is this correct?
Rifle Scopes EREK knob total elevation
- Thread starter Goin'Hot
- Start date
Re: EREK knob total elevation
No. It depends on the scope you get, but the 3.2-17 is the most popular. After you choose a scope the total travel depends on the tube size. For the 3.2-17, 30mm and 34mm usually have around 90moa of elevation adjustment. The 35mm has a little more.
No. It depends on the scope you get, but the 3.2-17 is the most popular. After you choose a scope the total travel depends on the tube size. For the 3.2-17, 30mm and 34mm usually have around 90moa of elevation adjustment. The 35mm has a little more.
Re: EREK knob total elevation
The EREK know shows marks for 2 full revs. 9 MILS per rev. Do they mark the knobs for more than 2 revs based on the tube you're getting?
At 90 moa thats 25 MILS and with 9 MILS per rev, that would be 2.8 revs. Does that sound right?
The EREK know shows marks for 2 full revs. 9 MILS per rev. Do they mark the knobs for more than 2 revs based on the tube you're getting?
At 90 moa thats 25 MILS and with 9 MILS per rev, that would be 2.8 revs. Does that sound right?
Re: EREK knob total elevation
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: KNIGHT11B4</div><div class="ubbcode-body">The Milestone Erek has 11 mils per turn.
</div></div>
So, are they still set up for just 2 revs? 22 MILS of total adjustment?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: KNIGHT11B4</div><div class="ubbcode-body">The Milestone Erek has 11 mils per turn.
</div></div>
So, are they still set up for just 2 revs? 22 MILS of total adjustment?
Re: EREK knob total elevation
Shooting out to 2400 yds. I'd like to dial to target rather than holding markers. My PH's have 27 MILS when used with 45 moa rails.
Shooting out to 2400 yds. I'd like to dial to target rather than holding markers. My PH's have 27 MILS when used with 45 moa rails.
Re: EREK knob total elevation
When you zero the EREK you are actually moving the erector inside the body. This way you are not losing any of your travel. Its not just adjust then slip the knobs.
Ive never topped out any of my USOs so I don't know exactly how many turns there are.
When you zero the EREK you are actually moving the erector inside the body. This way you are not losing any of your travel. Its not just adjust then slip the knobs.
Ive never topped out any of my USOs so I don't know exactly how many turns there are.
Re: EREK knob total elevation
Straight from the website...
"EREK knob
Erector Repositioning Elevation Knob.
This is a 90 clk/rev system. It comes in 1/4MOA, 1/2MOA, and 1cm@100m per click subtentions.
This knob has about 80MOA elevation travel and can be repositioned on the erector screw to simulate a down angle base. This is important to flat-tops and other 0MOA down base rifles because they only get half of a scopes effective travel as well and very long range shooters.
The EREK is an elevation knob only and is available on the SN-3 and ST-10 models."
Straight from the website...
"EREK knob
Erector Repositioning Elevation Knob.
This is a 90 clk/rev system. It comes in 1/4MOA, 1/2MOA, and 1cm@100m per click subtentions.
This knob has about 80MOA elevation travel and can be repositioned on the erector screw to simulate a down angle base. This is important to flat-tops and other 0MOA down base rifles because they only get half of a scopes effective travel as well and very long range shooters.
The EREK is an elevation knob only and is available on the SN-3 and ST-10 models."
Re: EREK knob total elevation
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lazy21</div><div class="ubbcode-body">my uso's normally come with 120 moa of adjustment </div></div>
And, can you dial ALL of that using the EREK knob?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lazy21</div><div class="ubbcode-body">my uso's normally come with 120 moa of adjustment </div></div>
And, can you dial ALL of that using the EREK knob?
Re: EREK knob total elevation
22 Mils on my 3.2-17x SN-3
Never needed to run it out that far since it's on a .308
22 Mils on my 3.2-17x SN-3
Never needed to run it out that far since it's on a .308
Re: EREK knob total elevation
Keep in mind that your elevation travel will depend on your rail. Both my USO's (30mm tube) get approx 23 mils elevation when mounted on a 20moa base. On a flat base you'll lose about 5-ish mils depending on the scope and round your shooting. I would think that a 30moa base would be needed with a 34mm tube to get even close to shooting that far and even then you may still need holdovers. Anything short of a .338 or .50 isn't going to make it that far with any hope of making a hit.
Keep in mind that your elevation travel will depend on your rail. Both my USO's (30mm tube) get approx 23 mils elevation when mounted on a 20moa base. On a flat base you'll lose about 5-ish mils depending on the scope and round your shooting. I would think that a 30moa base would be needed with a 34mm tube to get even close to shooting that far and even then you may still need holdovers. Anything short of a .338 or .50 isn't going to make it that far with any hope of making a hit.
G
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Re: EREK knob total elevation
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BattleAxe</div><div class="ubbcode-body">Keep in mind that your elevation travel will depend on your rail. </div></div>
Your scopes total elevation travel has nothing to do with any base cant. Useable travel from the ctr X that's zeroed at Y range yes, then again some do not use the ctr X as a 100yd zero. I've one .308 that the ctr X is a 700yd zero but I still have a 100 yd hold point as well. Max Total available in either the 17 or 22X is 125 IPHY
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BattleAxe</div><div class="ubbcode-body">Keep in mind that your elevation travel will depend on your rail. </div></div>
Your scopes total elevation travel has nothing to do with any base cant. Useable travel from the ctr X that's zeroed at Y range yes, then again some do not use the ctr X as a 100yd zero. I've one .308 that the ctr X is a 700yd zero but I still have a 100 yd hold point as well. Max Total available in either the 17 or 22X is 125 IPHY
Re: EREK knob total elevation
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Gunfighter14e2</div><div class="ubbcode-body"> Your scopes total elevation travel has nothing to do with any base cant. </div></div>
I was referring to travel above zero (assuming 100 yds)but yes...point taken. In the context of how far you can shoot (not assuming holdovers)the only number that matters is travel above zero and that will be determined by rail can't, height of scope centerline above bore centerline, and total travel. For arguement sake...elevation travel below zero is not usable elevation except in cases where someone for example zeroes at longer distance. But even if that's the case that extra travel below serves only to allow you to dial in at a closer target and does not give you any distance.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Gunfighter14e2</div><div class="ubbcode-body"> Your scopes total elevation travel has nothing to do with any base cant. </div></div>
I was referring to travel above zero (assuming 100 yds)but yes...point taken. In the context of how far you can shoot (not assuming holdovers)the only number that matters is travel above zero and that will be determined by rail can't, height of scope centerline above bore centerline, and total travel. For arguement sake...elevation travel below zero is not usable elevation except in cases where someone for example zeroes at longer distance. But even if that's the case that extra travel below serves only to allow you to dial in at a closer target and does not give you any distance.
Re: EREK knob total elevation
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Goin'Hot</div><div class="ubbcode-body">If I'm looking at it right, the MIL adjustment knob only has 18 MILS of total adjustment. Is this correct? </div></div>
Current knobs are 3 turn and provide 27 mils of adjustment in the KNOB. The reticle travel is greater than the knob travel. Read up on EREK zeroing in order to understand the significance of the above information.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Goin'Hot</div><div class="ubbcode-body">If I'm looking at it right, the MIL adjustment knob only has 18 MILS of total adjustment. Is this correct? </div></div>
Current knobs are 3 turn and provide 27 mils of adjustment in the KNOB. The reticle travel is greater than the knob travel. Read up on EREK zeroing in order to understand the significance of the above information.
Re: EREK knob total elevation
You guys have to remember that it all depends on what power scope you are running. The higher the magnification, the less total travel you will have.
John III
You guys have to remember that it all depends on what power scope you are running. The higher the magnification, the less total travel you will have.
John III
Re: EREK knob total elevation
I have 1.5 MOA under my zero leaving me with 84.5 MOA of elevation travel.
I have 1.5 MOA under my zero leaving me with 84.5 MOA of elevation travel.
Re: EREK knob total elevation
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: _9H</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Goin'Hot</div><div class="ubbcode-body">If I'm looking at it right, the MIL adjustment knob only has 18 MILS of total adjustment. Is this correct? </div></div>
Current knobs are 3 turn and provide 27 mils of adjustment in the KNOB. The reticle travel is greater than the knob travel. Read up on EREK zeroing in order to understand the significance of the above information. </div></div>
They need to update their web site then. I didn't find mention of the Milestone knob there either.
Even in the video John III has linked in his signature, the 2 scopes don't show any more than 18 MILS of adjustment ON THE KNOB.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: _9H</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Goin'Hot</div><div class="ubbcode-body">If I'm looking at it right, the MIL adjustment knob only has 18 MILS of total adjustment. Is this correct? </div></div>
Current knobs are 3 turn and provide 27 mils of adjustment in the KNOB. The reticle travel is greater than the knob travel. Read up on EREK zeroing in order to understand the significance of the above information. </div></div>
They need to update their web site then. I didn't find mention of the Milestone knob there either.
Even in the video John III has linked in his signature, the 2 scopes don't show any more than 18 MILS of adjustment ON THE KNOB.
Re: EREK knob total elevation
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: _9H</div><div class="ubbcode-body">Current knobs are 3 turn and provide 27 mils of adjustment in the KNOB. The reticle travel is greater than the knob travel. </div></div>I may be reading this wrong but you may have this backwards...the knob travel is actually greater than reticle travel and you can see this if you run the scope on a culminator. The reticle will stop moving, yet the knob will still turn a few mils.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: _9H</div><div class="ubbcode-body">Current knobs are 3 turn and provide 27 mils of adjustment in the KNOB. The reticle travel is greater than the knob travel. </div></div>I may be reading this wrong but you may have this backwards...the knob travel is actually greater than reticle travel and you can see this if you run the scope on a culminator. The reticle will stop moving, yet the knob will still turn a few mils.
Re: EREK knob total elevation
27 * 3.4 = 91.8, and in the lower powers, USO scopes have more erector travel than this. Up the tube diameter and there is lots more travel.
Definition of Culminator - A swift-moving planet which in transit reaches a critical position, by conjunction or aspect, and thereby precipitates the externalization of a simultaneous state of displaced equilibrium caused by a lingering aspect from a slow-moving planet.
A collimator is a device that narrows a beam of particles or waves. To "narrow" can mean either to cause the directions of motion to become more aligned in a specific direction (i.e., collimated or parallel) or to cause the spatial cross section of the beam to become smaller. Optical collimators can be used to calibrate other optical devices,[1] to check if all elements are aligned on the optical axis, to set elements at proper focus, or to align two or more devices such as binoculars and gun barrels/gunsights.
Most certainly one could adjust the reticle/knob relationship using the center screw in such a fashion as to make it appear as though the knob has more travel than the erector.
27 * 3.4 = 91.8, and in the lower powers, USO scopes have more erector travel than this. Up the tube diameter and there is lots more travel.
Definition of Culminator - A swift-moving planet which in transit reaches a critical position, by conjunction or aspect, and thereby precipitates the externalization of a simultaneous state of displaced equilibrium caused by a lingering aspect from a slow-moving planet.
A collimator is a device that narrows a beam of particles or waves. To "narrow" can mean either to cause the directions of motion to become more aligned in a specific direction (i.e., collimated or parallel) or to cause the spatial cross section of the beam to become smaller. Optical collimators can be used to calibrate other optical devices,[1] to check if all elements are aligned on the optical axis, to set elements at proper focus, or to align two or more devices such as binoculars and gun barrels/gunsights.
Most certainly one could adjust the reticle/knob relationship using the center screw in such a fashion as to make it appear as though the knob has more travel than the erector.
Re: EREK knob total elevation
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Goin'Hot</div><div class="ubbcode-body">If I'm looking at it right, the MIL adjustment knob only has 18 MILS of total adjustment. Is this correct? </div></div>
Do a search--I don't feel like reposting it, I wrote an answer to a question about the EREK knob and how it works to give you that "built-in cant (vertical incline not reticle cant)"
It has markings for 18MILS (you reach 18MILS at the end of the second turn) but you can keep turning it beyond that. It all depends on how you setup your scope; how much more you can turn the knob.
Gene
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Goin'Hot</div><div class="ubbcode-body">If I'm looking at it right, the MIL adjustment knob only has 18 MILS of total adjustment. Is this correct? </div></div>
Do a search--I don't feel like reposting it, I wrote an answer to a question about the EREK knob and how it works to give you that "built-in cant (vertical incline not reticle cant)"
It has markings for 18MILS (you reach 18MILS at the end of the second turn) but you can keep turning it beyond that. It all depends on how you setup your scope; how much more you can turn the knob.
Gene
Re: EREK knob total elevation
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: _9H</div><div class="ubbcode-body">
27 * 3.4 = 91.8, and in the lower powers, USO scopes have more erector travel than this. Up the tube diameter and there is lots more travel.
Definition of Culminator - A swift-moving planet which in transit reaches a critical position, by conjunction or aspect, and thereby precipitates the externalization of a simultaneous state of displaced equilibrium caused by a lingering aspect from a slow-moving planet.
A collimator is a device that narrows a beam of particles or waves. To "narrow" can mean either to cause the directions of motion to become more aligned in a specific direction (i.e., collimated or parallel) or to cause the spatial cross section of the beam to become smaller. Optical collimators can be used to calibrate other optical devices,[1] to check if all elements are aligned on the optical axis, to set elements at proper focus, or to align two or more devices such as binoculars and gun barrels/gunsights.
Most certainly one could adjust the reticle/knob relationship using the center screw in such a fashion as to make it appear as though the knob has more travel than the erector. </div></div>
Actually I liked your original smartass post better but sure...I spelled "thingy" incorrectly...how embarrassing for me and my family. We'll all live in shame moving forward.
I am curious though as to which of the 3 of my USO's I "<span style="font-style: italic">don't know much about</span>". They're adjusted in accordance with USO specs and several videos posted right here on the hide by folks that now apparently don't know how they work either. Hell, maybe we all can't spell thingy but I'm quite certain we can differentiate between a reticle that's moving and one that is not.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: _9H</div><div class="ubbcode-body">
27 * 3.4 = 91.8, and in the lower powers, USO scopes have more erector travel than this. Up the tube diameter and there is lots more travel.
Definition of Culminator - A swift-moving planet which in transit reaches a critical position, by conjunction or aspect, and thereby precipitates the externalization of a simultaneous state of displaced equilibrium caused by a lingering aspect from a slow-moving planet.
A collimator is a device that narrows a beam of particles or waves. To "narrow" can mean either to cause the directions of motion to become more aligned in a specific direction (i.e., collimated or parallel) or to cause the spatial cross section of the beam to become smaller. Optical collimators can be used to calibrate other optical devices,[1] to check if all elements are aligned on the optical axis, to set elements at proper focus, or to align two or more devices such as binoculars and gun barrels/gunsights.
Most certainly one could adjust the reticle/knob relationship using the center screw in such a fashion as to make it appear as though the knob has more travel than the erector. </div></div>
Actually I liked your original smartass post better but sure...I spelled "thingy" incorrectly...how embarrassing for me and my family. We'll all live in shame moving forward.
I am curious though as to which of the 3 of my USO's I "<span style="font-style: italic">don't know much about</span>". They're adjusted in accordance with USO specs and several videos posted right here on the hide by folks that now apparently don't know how they work either. Hell, maybe we all can't spell thingy but I'm quite certain we can differentiate between a reticle that's moving and one that is not.
Re: EREK knob total elevation
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: gszeto99</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Goin'Hot</div><div class="ubbcode-body">If I'm looking at it right, the MIL adjustment knob only has 18 MILS of total adjustment. Is this correct? </div></div>
Do a search--I don't feel like reposting it, I wrote an answer to a question about the EREK knob and how it works to give you that "built-in cant (vertical incline not reticle cant)"
It has markings for 18MILS (you reach 18MILS at the end of the second turn) but you can keep turning it beyond that. It all depends on how you setup your scope; how much more you can turn the knob.
Gene </div></div>
It has markings however you instruct USO to mark it. There are also horizontal hashes under the knob that help you keep track what rev you are on.
I have my knob marked with one set of numbers so it is easier to see up close with older eyes. The knob is still a 3 turn knob.
BA, ones befuddlement with simple mechanical devices like scopes and bipods is a subject I'd prefer to stay away from. I'm sure there are plenty of other people here you can go pick a fight with.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: gszeto99</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Goin'Hot</div><div class="ubbcode-body">If I'm looking at it right, the MIL adjustment knob only has 18 MILS of total adjustment. Is this correct? </div></div>
Do a search--I don't feel like reposting it, I wrote an answer to a question about the EREK knob and how it works to give you that "built-in cant (vertical incline not reticle cant)"
It has markings for 18MILS (you reach 18MILS at the end of the second turn) but you can keep turning it beyond that. It all depends on how you setup your scope; how much more you can turn the knob.
Gene </div></div>
It has markings however you instruct USO to mark it. There are also horizontal hashes under the knob that help you keep track what rev you are on.
I have my knob marked with one set of numbers so it is easier to see up close with older eyes. The knob is still a 3 turn knob.
BA, ones befuddlement with simple mechanical devices like scopes and bipods is a subject I'd prefer to stay away from. I'm sure there are plenty of other people here you can go pick a fight with.
Re: EREK knob total elevation
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: _9H</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: gszeto99</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Goin'Hot</div><div class="ubbcode-body">If I'm looking at it right, the MIL adjustment knob only has 18 MILS of total adjustment. Is this correct? </div></div>
Do a search--I don't feel like reposting it, I wrote an answer to a question about the EREK knob and how it works to give you that "built-in cant (vertical incline not reticle cant)"
It has markings for 18MILS (you reach 18MILS at the end of the second turn) but you can keep turning it beyond that. It all depends on how you setup your scope; how much more you can turn the knob.
Gene </div></div>
It has markings however you instruct USO to mark it. There are also horizontal hashes under the knob that help you keep track what rev you are on.
I have my knob marked with one set of numbers so it is easier to see up close with older eyes. The knob is still a 3 turn knob.
</div></div>
Yes, you can have USO setup whatever EREK knob marking you want. In your case the custom knob is a single turn 9MIL knob. The hash marks were not present in the older scopes. I have examples of scopes with the horizontal hash marks and others that do not. It seems the newer scopes with the horizontal hash marks does not really allow you to use the pseudo zero-stop feature on the EREK. The older knobs without the hash marks allow you that feature. At least that is with my experience. Maybe USO got rid of that feature because too many people where breaking their scopes when they turn too hard into the pseudo zero-stop?
Newer scopes using the hash marks with the single turn marking on an EREK knob is just like using a traditional scope elevation adjustment: zero at 0-0.0 and let say you need 11 mils of adjustment then you would twist the EREK until you get to 1-2.0 MILS
On the older scopes without hash marks but has double turn markings and pseudo zero stop: I set the zero stop right on the zero so I just twist until it stops and it will be zeroed at 0.0 and if I need 11 mils of adjustment then I twist past the 9MIL mark and keep reading the knob since there are markings past that until I reach 11.0 MILS. Being able to do that is what makes the EREK knob unique in my opinion.
Gene
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: _9H</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: gszeto99</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Goin'Hot</div><div class="ubbcode-body">If I'm looking at it right, the MIL adjustment knob only has 18 MILS of total adjustment. Is this correct? </div></div>
Do a search--I don't feel like reposting it, I wrote an answer to a question about the EREK knob and how it works to give you that "built-in cant (vertical incline not reticle cant)"
It has markings for 18MILS (you reach 18MILS at the end of the second turn) but you can keep turning it beyond that. It all depends on how you setup your scope; how much more you can turn the knob.
Gene </div></div>
It has markings however you instruct USO to mark it. There are also horizontal hashes under the knob that help you keep track what rev you are on.
I have my knob marked with one set of numbers so it is easier to see up close with older eyes. The knob is still a 3 turn knob.
</div></div>
Yes, you can have USO setup whatever EREK knob marking you want. In your case the custom knob is a single turn 9MIL knob. The hash marks were not present in the older scopes. I have examples of scopes with the horizontal hash marks and others that do not. It seems the newer scopes with the horizontal hash marks does not really allow you to use the pseudo zero-stop feature on the EREK. The older knobs without the hash marks allow you that feature. At least that is with my experience. Maybe USO got rid of that feature because too many people where breaking their scopes when they turn too hard into the pseudo zero-stop?
Newer scopes using the hash marks with the single turn marking on an EREK knob is just like using a traditional scope elevation adjustment: zero at 0-0.0 and let say you need 11 mils of adjustment then you would twist the EREK until you get to 1-2.0 MILS
On the older scopes without hash marks but has double turn markings and pseudo zero stop: I set the zero stop right on the zero so I just twist until it stops and it will be zeroed at 0.0 and if I need 11 mils of adjustment then I twist past the 9MIL mark and keep reading the knob since there are markings past that until I reach 11.0 MILS. Being able to do that is what makes the EREK knob unique in my opinion.
Gene
