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# Base Height

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#1
11-25-2013, 05:13 PM
 Bronze Member Join Date: Mar 2013 Location: Estherville, IA Posts: 81
Base Height

How tall is a 20 MOA base?

~WS
__________________
The 284 is to the STW what a tricycle is to a ninja
#2
11-25-2013, 05:53 PM
 Platinum Member Join Date: Oct 2007 Posts: 1,249
Re: Base Height

Quote:
 Originally Posted by WisconSniper How tall is a 20 MOA base? ~WS
That depends on which end you measure.
#3
11-25-2013, 06:05 PM
 Bronze Member Join Date: Mar 2013 Location: Estherville, IA Posts: 81
Re: Base Height

Both ends
__________________
The 284 is to the STW what a tricycle is to a ninja
#4
11-25-2013, 06:29 PM
 Silver Member Join Date: Dec 2008 Location: selinsgrove pa. Posts: 462
Re: Base Height

I have seen them tall and short. I make my own and make them real tall to get over the barrel block. Also I don't like my cheek to touch the stock. I believe around 6 degrees of angle gives you 20 minutes. I have some from Bat that are about an inch tall and some that are only about 1/2" tall.
#5
11-26-2013, 01:30 AM
 Bronze Member Join Date: Dec 2011 Location: AL Posts: 40
Re: Base Height

How to shim a scope base

First we need to know the spacing between the rings. In this example we will call it 6 inches. To find the correct amount to raise the rear ring we divide the 20 inches of elevation we want back by the number of inches in 100 yards (3600). This is then multiplied by the ring spacing in inches (6). This looks like (20/3600) x 6 = .033". The rear ring should be raised .033" for the correct adjustment. As mentioned, this same principle applies to Unertl mount systems if the maximum amount of `up' adjustment is desired. The Unertl scope in the pictures is mounted on a base which has the front mounting area surface ground .075" lower than the rear.

Lilja Precision Rifle Barrels - Articles: Long Range Shooting and Hunting: Page 2
#6
11-26-2013, 08:14 AM
 Bronze Member Join Date: Mar 2013 Location: Estherville, IA Posts: 81
Re: Base Height

Thanks catskinner, that helps me quite a bit. I wasn't sure if there was a standard height for 20 moa bases.

~WSWS
__________________
The 284 is to the STW what a tricycle is to a ninja
#7
11-26-2013, 04:58 PM
 Bronze Member Join Date: Dec 2011 Location: AL Posts: 40
Re: Base Height

Are you shimming one or are you milling a 0moa to a 20 MOA

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