20 MOA base on savage questions
- Thread starter Pat4x4
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The 20MOA base is for true long range shooting, sighted in at 500 yds not 100.
Adjusting the scope far enough to sight in at 100 yards with that base isn't very good for it. And many might not even go that far anyway.
Another problem with that setup is that you will be way off with even a modest variation in distance.
Adjusting the scope far enough to sight in at 100 yards with that base isn't very good for it. And many might not even go that far anyway.
Another problem with that setup is that you will be way off with even a modest variation in distance.
skinewmexico
Member
If you have enough internal adjustment in your scope, you can zero at 100 with a 20 MOA base. And if you have a quality scope, it's no big deal cranking it down. I had an older Bushnell 4200, and the older models only have something like 26 MOA of adjustment, and that wasn't enough to zero at 100, it was zeroed at 300. Replaced the 20 MOA base with a 10 MOA, and I was GTG. Shooting a 6.5X47 instead of a 308, I didn't need a 20 MOA base, I found out.
But what you're talking about doing, using a 20 MOA base and a scope with a lot of internal adjustment (30 mm tube) to get a 100 yard zero, is done all the time by hundreds of long range shooters. Go to Zak Smith's web site, you can read all about it. In fact, he'll probably pop in here with a link soon.
But what you're talking about doing, using a 20 MOA base and a scope with a lot of internal adjustment (30 mm tube) to get a 100 yard zero, is done all the time by hundreds of long range shooters. Go to Zak Smith's web site, you can read all about it. In fact, he'll probably pop in here with a link soon.
desidog
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The only 20MOA (might've been 15moa) rail i've seen on a rifle set up for 100yds was on a 10/22 shooting Aquila 60gr subsonics....fast twist barrel....pretty much lobbing the projectile like a thump gun. It was a ridiculous setup. All that aftermarket loot just to do something a standard carbine could do fine.
But to answer your question, No, 20moa is not a good idea for centerfire rifle cartridges at 100 - you'd only need it farther out than 500 or so, depending on specific caliber.
But to answer your question, No, 20moa is not a good idea for centerfire rifle cartridges at 100 - you'd only need it farther out than 500 or so, depending on specific caliber.
Jim Watson
Member
I have a 20 moa base and my Leupold 8.5-25X will get down to a 100 yard zero.
USSR
Member
As long as your scope has atleast 40MOA of total elevation adjustment, you should have no problem obtaining a 100 yard zero. I have 20MOA bases on 3 different rifles, and all have 100 yard zeros.
Don
What scope are you going to use Pat4X4?
For instance, if I did my math right and the optics maker's claim about internal adjustment is correct...
A scope (1 click = 1/4 or .25 @ 100 Yds.) with 50 inches of adjustment at 100 yards, paired with a 20 MOA base should be fine, right?
For instance, if I did my math right and the optics maker's claim about internal adjustment is correct...
A scope (1 click = 1/4 or .25 @ 100 Yds.) with 50 inches of adjustment at 100 yards, paired with a 20 MOA base should be fine, right?
Detritus
Member
also what are you defining as "Long range"?
To some shooters 500-600yrds is "long range", but unless you got other serious problems, you don't need a slanted base to get to 600, done it with a POS barska scope and a standard Leupold one-piece "turn-in" base on a .223 savage, and yes i just cranked in the elevation change from the 100yrd setting, and then fired the match like everyone else. Now if i was gonna shoot a gun at 1K i'd have a 20MOA base on it.
As others have said with a quality scope (and even some lower quality ones, like that Barska) with a good adjustment range, zeroing at 100 should not be a problem.
To some shooters 500-600yrds is "long range", but unless you got other serious problems, you don't need a slanted base to get to 600, done it with a POS barska scope and a standard Leupold one-piece "turn-in" base on a .223 savage, and yes i just cranked in the elevation change from the 100yrd setting, and then fired the match like everyone else. Now if i was gonna shoot a gun at 1K i'd have a 20MOA base on it.
As others have said with a quality scope (and even some lower quality ones, like that Barska) with a good adjustment range, zeroing at 100 should not be a problem.
I figured 500 to 1000 for long range.. I have a nikon right now.. Not sure of how much adjustment it has but will look it up. I might shoot for a 10 moa base also but it sounds over all a 20 will be fine... thanks for the input guys
MAX100
Member
If you want to be setup for long range shooting a 20 moa base is the way to go if your scope has at least 40 moa total adj. Most Nikon scopes have at least 60 moa.
An example:
If you have a scope that has 60 moa total elevation you will have around 30 up and 30 down with 100 yard zero. With a 20 moa base it will give you around 50 up and 10 down with a 100 yard zero. The base is taller in the back and slops the scope downwards slightly. It takes 20 off the bottom and puts it up top where it's needed.
Keep in mind that a 20 moa base doesn't always allow the full 20. There are other variables involved. Most likely you will only get 16 to 18 moa.
GC
An example:
If you have a scope that has 60 moa total elevation you will have around 30 up and 30 down with 100 yard zero. With a 20 moa base it will give you around 50 up and 10 down with a 100 yard zero. The base is taller in the back and slops the scope downwards slightly. It takes 20 off the bottom and puts it up top where it's needed.
Keep in mind that a 20 moa base doesn't always allow the full 20. There are other variables involved. Most likely you will only get 16 to 18 moa.
GC
skinewmexico
Member
The base you need will also depend on your caliber. Big difference in lobbing a 308, or shooting a 6.5.
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