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Advantages of 2 base or 1 base system

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/02/2010 at 18:54
mossyoak View Drop Down
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Brand spanking new to the forum so hello to all.

What are the advantages or disadvantages of a single or one piece base?  I have always been fond of a 2 piece system, but are there any advantages between either?  I have a Remmy 700 .22-250 and was thinking about getting a 1 base system for it. 

Let's hear some thoughts.

Thanks in advance.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/02/2010 at 19:43
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less moving parts the less to go wrong.  If its a hunting gun consider Talley lightweight rings which do not require a base its built in.  If its a tactical gun look at Badger Ordnance
The one piece rails allow the use of quick release systems and heavy duty mounts that will allow interchangability of optics. 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/03/2010 at 08:53
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I may get ragged on for this but here is a quick opinion...
 
1 piece for repeatable, precission accuracy. 
2 piece for decent average accuracy
 
Then you have to consider steel vs aluminum
 
Steel Stronger and supierior
Aluminum strong and fine for most
 
Optimal set up for precission shooting,  one piece steel mount and rings from badger IMO of course. 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/03/2010 at 11:56
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Originally posted by SVT_Tactical SVT_Tactical wrote:

I may get ragged on for this but here is a quick opinion...
2 piece for decent average accuracy
 

Not ragging but just my take:
I agree that one piece should be better based on one solid piece being drilled and c'bored on the same set up. But saying two piece is for decent average accuracy is far from my experience on dozens of rifles.
Whether they are the Weaver Top Mounts are the far more expensive Talley QD's , once I'm on, I'm on. I like to get 1/2 moa out of all of my hunting sticks. On the guns I can't it certainly hasn't been from two piece mounts. I have removed Talleys and Weavers on several hunts, remounted them and taken game. I have also tested this at the range.


Doug


Edited by tahqua - January/03/2010 at 15:02
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/03/2010 at 13:40
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I just thought that the 2 base system would be lighter, I wouldn't think that it would effect accuracy.  I am looking at leupold's 2 piece standard base.  Would I have any advantage going with a more expensive 1 piece base?
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Originally posted by SVT_Tactical SVT_Tactical wrote:

I may get ragged on for this but here is a quick opinion...
 
1 piece for repeatable, precission accuracy. 
2 piece for decent average accuracy
 
Then you have to consider steel vs aluminum
 
Steel Stronger and supierior
Aluminum strong and fine for most
 
Optimal set up for precission shooting,  one piece steel mount and rings from badger IMO of course. 


No offense but from many years of experience I have to disagree with number two.


Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/03/2010 at 14:35
tahqua View Drop Down
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Originally posted by mossyoak mossyoak wrote:

I just thought that the 2 base system would be lighter, I wouldn't think that it would effect accuracy.  I am looking at leupold's 2 piece standard base.  Would I have any advantage going with a more expensive 1 piece base?


The two piece is a bit lighter in the hunting bases when comparing steel versus steel of same brand.
What base to use depends on what I am doing with a gun. Is your 22-250 for hunting?
Both of my Remington 700 22-250's, an AS and a VS, have two piece bases. My primary use is predators and I'm usually wearing gloves. It was 7 degrees yesterday when I was out. I don't want the bridge in the way of the receiver opening for loading.
The AS has Weaver bases and standard Top Mount ugly rings. I haven't had to re-adjust my scope in years and this gun gets carried through the nasty stuff. My VS has two piece Leupold dual dovetails and they don't move at all either.
Both types have their uses. I am not a tactical shooter but I have no doubt those folks need extremely durable mount systems and the rails are the way to go. In hunting bases I don't see much difference. Varmints don't shoot back and for that reason I'll take sleek, trim for hunting reliability.
I do have a one piece steel Talley base on my Remington M7. That is not by choice, though. The M7 action is so short that it only had one base screw in my model. The bridge does get in the way when I'm loading up in the morning.

Doug
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/03/2010 at 20:11
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I have a remmy 700 22-250 varmint sf.  I plan on using it for coyote or prairie dogs, so yes, I will be taking it out in the field and using it a bit.  I was going to just go with the standard Leupold rings and base.  I am not a competition shooter by no means, I just want a secure fit for my scope when I use it in the field.   
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/03/2010 at 21:50
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The standards have been around for a long time and work fine.
I do like the dual dovetail better because both rings have studs into the base. The standard only has the front with a stud. The rear is only held by the windage adjustment screws and associated clamps. They are not a stud and therefore not as strong because the base of the ring is setting on, not in the base. The standard is still good enough for any 22-250 IMO, though.


Doug
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/04/2010 at 09:53
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Two piece are fine and you can get sub moa out of them i have a two piece on my 300 mag and it holds great.  I just dont' think you can expect to see any of them at the 1000 yd line.  For hunting i agree that a 2 piece is good. (no defending my statement above only adding to it.)
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/04/2010 at 10:24
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Probably not much difference for most people and most applications. I have both kinds. Alignment may be a little better using a one-piece base, but not necessarily so if the action screw holes are misaligned. One-piece bases may help stiffen the action a bit, but I've always wondered about that being much of an issue, especially with short actions. One thing a one-piece or unimount lends itself to is being "bedded" to the action with a thin film of blue loctite. As for aluminum vs. steel, I won't say an aluminum picatinny rail is as strong as a steel one but it should out-perform a two-piece mount.

One thing to consider is the size and weight of the scope. For my biggest, beefiest scope, I went with a Seekins Precision base and rings. For light scopes, like the one mounted on my .22 Savage, I just use a pair of decent Burris rings on the Weaver-style bases that came on the rifle.


Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/04/2010 at 11:02
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I've seen many, MANY dove-tailed rings fail (where the rear ring is windage adjustable.)  They strip out, the ring gets knocked out of alignment, they just ain't very sturdy.


I'm lost on the weight issue, this is a varmint gun, the weight of the base is minuscule in the overall picture.

My advise is to buy the strongest thing you can carry, mount/ring failures suck. Hard.  It is best to avoid  a failure by getting the best stuff you can and mounting it properly.

I prefer 1-piece bases for many reasons, not the least of which is a much larger area on which to mount optics in the perfect position for your eyes.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/04/2010 at 12:03
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Originally posted by SVT_Tactical SVT_Tactical wrote:

Two piece are fine and you can get sub moa out of them i have a two piece on my 300 mag and it holds great.  I just dont' think you can expect to see any of them at the 1000 yd line.  For hunting i agree that a 2 piece is good. (no defending my statement above only adding to it.)


Thunbs Up
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/06/2010 at 12:40
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I don't know if all 1-piece bases have a recoil lug like the Seekins or Badger bases, but that's additional insurance that your scope will not move, particularly with a heavy scope. Also, some scope makers (NF comes to mind) specifically warn against using two-piece bases.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/06/2010 at 12:57
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I think it all depends on what you intended application would be wether you would "have to" have a 1 piece vs. a 2 piece would suffice
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/06/2010 at 14:52
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Any of the Weaver types and the steel Talleys utilize a shoulder in the base. In the case of Weaver styles there is a cross bolt. On the Talleys the whole ring is seated in a cross slot in the base. The tolerances on the Talleys are also tight.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/10/2010 at 16:28
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Originally posted by SVT_Tactical SVT_Tactical wrote:

Two piece are fine and you can get sub moa out of them i have a two piece on my 300 mag and it holds great.  I just dont' think you can expect to see any of them at the 1000 yd line.  For hunting i agree that a 2 piece is good. (no defending my statement above only adding to it.)
 
I personaly like a 1 piece base, (Ken Farrell 20 MOA) but there are more guys than you think using Nightforce 2 piece, 20 MOA taper, at the 1000 yard matches I go to.
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