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 Rotty
Recon by fire
Team Member
Joined: Jan 2003  MI, USA
 Posts: 787 Feedback: 100% (8) |
Posted: 2/12/2011 10:59:11 PM
THE IMAGE ABOVE IS A PAID ADVERTISEMENT |
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Erik_O
Anachronistic-American
Team Member
Joined: Aug 2001 TX, USA
Posts: 890 Feedback: 100% (10) Link To This Post |
Posted: 2/13/2011 2:07:56 AM
[Last Edit: 8/22/2011 11:23:16 AM by Erik_O]
The base doesn't really come into play when you are figuring shooting solutions. What the base gives you is more elevation adjustment in your scope at the top by canting the scope up down ( 20 MOA ).
Edit: I had not drank coffee or consulted with my lawyer before posting  |
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graysonp
Member
Team Member
Joined: Oct 2008 KY, USA
Posts: 872 Feedback: 100% (53) Link To This Post |
Posted: 2/14/2011 4:12:48 PM
Originally Posted By Erik_O:
The base doesn't really come into play when you are figuring shooting solutions. What the base gives you is more elevation adjustment in your scope at the top by canting the scope up ( 20 MOA ). This. Once the gun is zeroed at a known range, the base doesn't affect anything. You just adjust as normal. |
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Posted: 4/4/2011 12:23:06 AM
The previous posts are completely correct. Once the weapon system has been zeroed, the 20 MOA decreased (higher in the back) angle of the optical platform is irrelivant. It's presence just allows you more capability for adjustment with out "toping-out" the elavation adjustment.
If there were any situation where you would have to take into consideration the 20 MOA change, it would be if you are in a "High Angle" situation and are attempting to achieve the cosign of your angle with a tool that is mounted to, or the placecd flush atop the optic or rail. Even in this situation and even at long ranges, the change in the percived angle verses the actual angle is only a few degrees and is realy not nessesary to calculate into your solution If you are attempting to engage man-sized targets. If you are attempting to engage very small targets then you might want to consider it in to your solution. However, the affect on the rounds external ballistics and trajectory due to this phenominon is even less critcal that the projectiles downhill assist or uphill resist wich are two other "High Angle" factors to concider. Hope this helps. Respectfully, USMC_0317_SS |
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DanTheGlockMan
Member
Team Member
Joined: Mar 2009 OR, USA
Posts: 329 Feedback: 0% (0) Link To This Post |
Posted: 7/19/2011 8:04:52 PM
It should be accounted for when entering sight height into your calculation in that you will want make that measurement on your rifle at the objective (front) lens. You theoretically would get a diffenet number to bore centerline at different points along the scope since it is at an angle. It might be small as others have stated and not play in much depending on the accuracy of your measurements but go for the best numbers you can get.
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Posted: 8/21/2011 3:56:08 AM
[Last Edit: 8/21/2011 3:56:51 AM by Still_learning]
Originally Posted By Erik_O:
The base doesn't really come into play when you are figuring shooting solutions. What the base gives you is more elevation adjustment in your scope at the top by canting the scope up DOWN ( 20 MOA ). MINOR TECHNICAL CORRECTION - it cants the scope down, not up. Alternatively, you could also say it tips the barrel up relative to the optical axis of the scope. The way this post states it is incorrect. |
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Erik_O
Anachronistic-American
Team Member
Joined: Aug 2001 TX, USA
Posts: 1064 Feedback: 100% (10) Link To This Post |
Posted: 8/22/2011 11:35:13 AM
Originally Posted By Still_learning: Originally Posted By Erik_O: The base doesn't really come into play when you are figuring shooting solutions. What the base gives you is more elevation adjustment in your scope at the top by canting the scope up DOWN ( 20 MOA ). MINOR TECHNICAL CORRECTION - it cants the scope down, not up. Alternatively, you could also say it tips the barrel up relative to the optical axis of the scope. The way this post states it is incorrect. Absolutely correct, edited my post to reflect. I had to spend sometime with a pen and paper to do the geometry; in the end I had a 'doh' moment. |
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Posted: 2/10/2012 4:34:51 PM
Originally Posted By graysonp:
Originally Posted By Erik_O:
The base doesn't really come into play when you are figuring shooting solutions. What the base gives you is more elevation adjustment in your scope at the top by canting the scope up ( 20 MOA ). This. Once the gun is zeroed at a known range, the base doesn't affect anything. You just adjust as normal. What he said... |
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