20 MOA scope base

More expensive to feed, but worth it.
Post Reply
User avatar
DavidABQ
Master Poster
Master Poster
Posts: 1495
Joined: Mon Jul 27, 2009 9:33 pm
Location: Rio Rancho, NM

20 MOA scope base

Post by DavidABQ » Thu Jun 29, 2017 1:37 pm

Do most Remington model 700's chambered for .308 require a 20 MOA rail for the rams? I will be using a Leupold FX-3, 25x40 scope if that helps. I hope that the base will make it easier to shoot the white buffalo as well. I did not like aiming 20-something feet above it.

Thanks everyone.

User avatar
Jason
Uber Master Poster
Uber Master Poster
Posts: 2968
Joined: Tue Feb 28, 2006 7:36 pm
Location: Snohomish, WA

Re: 20 MOA scope base

Post by Jason » Thu Jun 29, 2017 6:14 pm

No, unless the barrel isn't square with the receiver and points down. I'm only 11moa up from chickens to rams with my slowest ram loads out of my 260 Remington, and a 308 is typically only a couple more minutes at most. You can do the calculation on any ballistics calculator to see how many minutes there will be from your chicken to ram settings. Most target scopes have more than enough elevation. If you just want to have your scope in the middle of its adjustment range, you can get a rail with about 10 moa built into it.

User avatar
OldRanger
AAA Poster
AAA Poster
Posts: 946
Joined: Thu Jun 06, 2013 9:00 am
Location: Missoula, MT
Contact:

Re: 20 MOA scope base

Post by OldRanger » Fri Jun 30, 2017 8:09 am

My chicken to rams is 10 moa with my 308. That's using lighter chicken loads than ram loads.
I don't have any additional moa built in and mine is relatively centered up.
If she's yelling "Pineapple Congress Philadelphia Pogo-Stick" She probably forgot the safe word.

User avatar
DavidABQ
Master Poster
Master Poster
Posts: 1495
Joined: Mon Jul 27, 2009 9:33 pm
Location: Rio Rancho, NM

Re: 20 MOA scope base

Post by DavidABQ » Fri Jun 30, 2017 8:39 am

I need to buy myself one of these ballistics software program. That or if someone knows where I can find the equations to do the calculations then I can save myself some money.

I wonder if I place a 20 MOA scope of rail if I can still zero on the chickens?

It sounds like a nice little experiment to try.

Thank you everyone.

jask
A Poster
A Poster
Posts: 128
Joined: Tue Oct 29, 2013 4:56 am
Location: San Diego, California

Re: 20 MOA scope base

Post by jask » Sat Jul 01, 2017 12:20 am

The 20 MOA base would be more than you want for a lighter weight bullet. Over a 4" span of scope rings, that would be about .022 inches of height between the rings. That would be about 5 thickness of soda can if you are shimming. For my 7mm 162 grain, I used 3 pieces of soda can under the back ring and stayed well within the center adjustment of the scope. I know shimming is not a perfect solution but it worked for me. If you don't shim or use an angled base, the ram settings are going to be near the high end of scope adjustment where things can go just "wild".

Brd_Hntr
B Poster
B Poster
Posts: 84
Joined: Sat Sep 13, 2014 6:11 am
Location: California - San Francisco Bay Area

Re: 20 MOA scope base

Post by Brd_Hntr » Sun Jul 02, 2017 10:05 am

I need to buy myself one of these ballistics software program. That or if someone knows where I can find the equations to do the calculations then I can save myself some money.
Why buy what is freely available online?

Try
http://www.jbmballistics.com/cgi-bin/jbmtraj-5.1.cgi

This one has an attached bullet library which make it very easy. It can even calculate momentum for the ram conscious shooter/reloader.

User avatar
DavidABQ
Master Poster
Master Poster
Posts: 1495
Joined: Mon Jul 27, 2009 9:33 pm
Location: Rio Rancho, NM

Re: 20 MOA scope base

Post by DavidABQ » Sun Jul 02, 2017 3:51 pm

Thank you very much! \m/

Jerry G
Uber Master Poster
Uber Master Poster
Posts: 2625
Joined: Wed Apr 12, 2006 2:34 pm
Location: Casa Grande, AZ

Re: 20 MOA scope base

Post by Jerry G » Mon Jul 03, 2017 11:33 am

A 20 scope base will zero at 100 m just fine. A 200m correction is less than 2 minutes off the 100 zero.

User avatar
DavidABQ
Master Poster
Master Poster
Posts: 1495
Joined: Mon Jul 27, 2009 9:33 pm
Location: Rio Rancho, NM

Re: 20 MOA scope base

Post by DavidABQ » Mon Jul 03, 2017 9:39 pm

Jerry G wrote:
Mon Jul 03, 2017 11:33 am
A 20 scope base will zero at 100 m just fine. A 200m correction is less than 2 minutes off the 100 zero.
Thanks Jerry! I went ahead and took advantage of the current EGW sale on scope bases.

I needed a push.
:mrgreen:

User avatar
DavidABQ
Master Poster
Master Poster
Posts: 1495
Joined: Mon Jul 27, 2009 9:33 pm
Location: Rio Rancho, NM

Re: 20 MOA scope base

Post by DavidABQ » Mon Jul 17, 2017 8:43 am

I stuck the EGW 20MOA base on my do cheapo Remington 700 and I am glad to report that I was able to get a 200 yard zero. Now I need to drive up to the Whittington Center to see if it makes hitting the big buffalo any easier.
It is a good excuse to pop up there for a day or so. \m/

Post Reply

Who is online

Users browsing this forum: Cimarron Red and 2 guests