Rifle Scopes Question on Burris Signature Rings and Inserts

[glock24]

I have a pair of Burris 30mm Signature rings coming for a new build. I plan to use the +/-10 shims.

I'm curious to know if these shims correspond to any MOA measurements. In other words, is it possible that the +/-10 shim set is really a 10 MOA incline?

Thanks

 

[TonyAngel]

Re: Question on Burris Signature Rings and Inserts

That was what I was told. You'll get two sets of inserts for a total of 20MOA correction. I've been using these for a while. Although it's always been my intention to upgrade to "better" rings, I just haven't felt compelled to do so.

Just watch 'em. They'll rust on you.

 

[jrob300]

Re: Question on Burris Signature Rings and Inserts

Guy's... it depends on how far apart your scope rings are. It's simple math.

*IF* they're 6" apart, then .010"=6" @ 100 yds (not 6 moa. 1moa = 1.047"). So .020" would equal 12" or just under 12 moa.

Divide 300 feet by the distance apart of the rings in feet (6"=.5') and multiply times .010" for elevation at 100 yds.

John

 

[glock24]

Re: Question on Burris Signature Rings and Inserts

Very interesting.

Thanks guys.

 

[Rich Coyle]

Re: Question on Burris Signature Rings and Inserts

jrob300, are you familar with means equals extremes? It makes determining inches at 100 yards very easy for me. I use Burris Signatures exclusively. To me they are the only way to hold a scope; for 1" and 30mm.

 

[jrob300]

Re: Question on Burris Signature Rings and Inserts

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Old man now</div><div class="ubbcode-body">jrob300, are you familar with means equals extremes? </div></div>

Not familiar with that terminology. Have something to do with comparative ratios?

John

 

[Rolex24]

Re: Question on Burris Signature Rings and Inserts

I've got them set up with the .20's for max slope on a .22 rifle and that gets me plenty of extra elevation to get to 250yds. On my other rifles I've used them to help rectify inherent windage issues. I've also got the 30mm version on my .308. I love these rings and they'll be all I use from here on out. I consider them a great value too.

 

[glock24]

Re: Question on Burris Signature Rings and Inserts

I wish they had +/-20 inserts for their 30mm rings.

The rings on my R700 SA are 4" apart so;

300 feet divided by (4"/12")feet equals 900.09. This multiplied by 0.010" equals 9" @ 100 yards.

So if 1 MOA is 1.047", then my setup is roughly 8.6 MOA? (9/1.047)

 

[jrob300]

Re: Question on Burris Signature Rings and Inserts

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: glock24</div><div class="ubbcode-body">I wish they had +/-20 inserts for their 30mm rings.

The rings on my R700 SA are 4" apart so;

300 feet divided by (4"/12")feet equals 900.09. This multiplied by 0.010" equals 9" @ 100 yards.

So if 1 MOA is 1.047", then my setup is roughly 8.6 MOA? (9/1.047) </div></div>

That's *if* you use a 0 at one end and a .010" at the other. If you run +.010" at one end and -.010" at the other that's .020" total cant, which is double... so 17.2 moa. um... in theory.

These things get a lot clearer at the range.

John

 

[glock24]

Re: Question on Burris Signature Rings and Inserts

Ah yes, I forgot double it. That is good news, as I'm trying to get closer to 20 MOA.

Thanks

 

[Rich Coyle]

Re: Question on Burris Signature Rings and Inserts

jrob300, I am not familiar with your term but it sounds right. I will try to explain what I do.

Let's say it is 6" between the rings. For this we will say the scope is 100 yards or 3,600 inches from the target. We look through the scope and see the crosshair is 15" above the "X". We put on paper 6" - 3600" and below that ? - 15". We multiply 6X15 (extremes) devide by 3600 (mean). This gives us .025"(another mean). We need .025" down in the front or .025" up in the back or a combination of these numbers to get to .025".

When I was younger I used to do this in my head or use a slide rule. Now, of course, I use a calculator.