Unusual new concept I have heard today

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MartyK2500

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I am selling my scope off my .22 to upgrade, and the potential buyer of my old .22 scope asks me if it’s been on a 20 moa+ rail all it’s life.
Which I have replied to no, would it change anything?

He was going to drop the deal if it was.
As it allegedly keeps the turret cranked down and under tension which would prematurely use the turret assembly and give tracking issues....

I have spent many hours with quite a few long range shooters and this is a concept I’ve never heard of in my life.

Is there any truth to this theory in your opinion?
My centerfire rigs are on 20minute rails and I can’t see how 6mils of turret compression could damage my 34mm tube ATACR...
 
Um, a 20 MOA rail is still in a straight plane between the front and rear scope ring. It's only angled in relation to the receiver. So, no, it can't stress the scope. Having separate front and rear bases that are misaligned WILL stress the scope, though. And that's how most sporters are set up.

Edit: the separate bases are not usually misaligned, just most sporter rifles have 2-piece scope mounts. :)
 
The 20 moa rail is designed to build elevation into the mount.
I suppose that because the scope mount is optimised for long range, if zeroing were desired at very close range, the elevation could be wound down close to its limit of travel - the opposite of trying to get maximum elevation out of a scope mounted on a 0 degree base.
Unless excess force were used, I cannot see that adjusting a scope close to its limits would do harm.
 
rifleman762 said:
Um, a 20 MOA rail is still in a straight plane between the front and rear scope ring. It's only angled in relation to the receiver. So, no, it can't stress the scope. Having separate front and rear bases that are misaligned WILL stress the scope, though. And that's how most sporters are set up.

Edit: the separate bases are not usually misaligned, just most sporter rifles have 2-piece scope mounts. :)
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I may have not used the right words to word his concern,
He was concerned that by having a scope zero’d using a 20moa rail, puts your elevation turret under compression by being always dialed down an extra 20moa while idling in the safe.


tiriaq said:
The 20 moa rail is designed to build elevation into the mount.
I suppose that because the scope mount is optimised for long range, if zeroing were desired at very close range, the elevation could be wound down close to its limit of travel - the opposite of trying to get maximum elevation out of a scope mounted on a 0 degree base.
Unless excess force were used, I cannot see that adjusting a scope close to its limits would do harm.
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My thoughts exactly
 
What happens if the scope is on a flat base and the zero is in the upper 1/3 of the elevation travel?

Or maybe the barrel is wonky and the windage is way off to the side?

A scope that is on a canted rail and used properly through its travel, is in better shape then one sitting in some corner of adjustment for years on end. Ideally, the scope is also in Burris rings with inserts so the windage can be centered as well. Now the elevation travel is within the main tube diameter and unlikely to get jammed up in the 'corners' like it would if the windage is off to one side.

Crap scopes bind and hesitate in their travel. Good scopes use quality springs that will regain their 'spring' after a few quick cycles.

Sh!t breaks... companies have warranties for that.

Jerry
 
Now I dont know how the internals of a scope work as I have never pulled one apart to look inside and also have never seen an exploded diagram of one.
What would make it 'under tension' ? Are there springs in there? I thought it would just be fine adjustment screws. If it is just screws, how does it break from sitting in one position and not being moved often?
 
Steve McQueen said:
Now I dont know how the internals of a scope work as I have never pulled one apart to look inside and also have never seen an exploded diagram of one.
What would make it 'under tension' ? Are there springs in there? I thought it would just be fine adjustment screws. If it is just screws, how does it break from sitting in one position and not being moved often?
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images
 
rugbydave said:
The amount of "old wives tales" in the shooting world never ceases to amaze me...
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No s***!
I won’t tell any names, but had some guy try my rifle at the range at some point.
He asked me in which direction the headstamps pointed when they we’re chambered.

This is where I went huh wtf?
He went on telling me that he chambers his rounds with the headstamp always pointing up for a reason I can’t remember as I was well beyond ignoring his speach at that point Laugh2
 
MartyK2500 said:
No s***!
I won’t tell any names, but had some guy try my rifle at the range at some point.
He asked me in which direction the headstamps pointed when they we’re chambered.

This is where I went huh wtf?
He went on telling me that he chambers his rounds with the headstamp always pointing up for a reason I can’t remember as I was well beyond ignoring his speach at that point Laugh2
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i always make sure my golf ball logo is facing up. makes it go further! Cuz wind resistance on the ink while it spins and math!!



seriously i do actually make sure my golf ball logo is facing up, it helps me focus on the ball and not lift my head at the end of my swing. But its funny to tell people
 
MartyK2500 said:
No s***!
I won’t tell any names, but had some guy try my rifle at the range at some point.
He asked me in which direction the headstamps pointed when they we’re chambered.

This is where I went huh wtf?
He went on telling me that he chambers his rounds with the headstamp always pointing up for a reason I can’t remember as I was well beyond ignoring his speach at that point Laugh2
Click to expand...

He needs a better gunsmith.... the root of this process is because his chamber is not round... but then I would find it hard for his sizing die to be equally out of round

So maybe, he just neck sizes... :)

And when I spent alot of time with milsurps... I actually had to do this to get the fired brass to chamber again.

for better or worst, 'old wives tales' have their root in some fact.... like cleaning your bore after 5 or 6 rds for best accuracy.

YMMV

Jerry
 
Mystic Precision said:
He needs a better gunsmith.... the root of this process is because his chamber is not round... but then I would find it hard for his sizing die to be equally out of round

So maybe, he just neck sizes... :)

And when I spent alot of time with milsurps... I actually had to do this to get the fired brass to chamber again.

for better or worst, 'old wives tales' have their root in some fact.... like cleaning your bore after 5 or 6 rds for best accuracy.

YMMV

Jerry
Click to expand...

I never would of thought there could be some truth to this one!
 
if the chamber is out of round, the die won't get it all out of the brass, there is some spring back. take your fired brass, put it back into the chamber. if it fits only in one position....
 
MartyK2500 said:
No s***!
I won’t tell any names, but had some guy try my rifle at the range at some point.
He asked me in which direction the headstamps pointed when they we’re chambered.

This is where I went huh wtf?
He went on telling me that he chambers his rounds with the headstamp always pointing up for a reason I can’t remember as I was well beyond ignoring his speach at that point Laugh2
Click to expand...

Indexing; it's actually a thing. Not a thing I do. but a thing none the less.

One example is in BPCR shooting. They can start with marking the bullet mould and keeping each bullet in the same relative position in every stage up to a case that has been kept in the same position in the chamber. Consistency of inconsistency. The potential for endless time killing is endless.

Another is checking for cartridge run-out, then marking the side with the bend and always chambering each cartridge with the mark up. Wouldn't need to be up; but at least you would be able to see it. The flaws would be oriented the same, which is better than the flaws in random directions. Supposedly that has been proven to work, by people with way too much time on their hands.

A third would be if you are going to flinch; work on flinching the same every time.;) I just threw that one in for free. ;)

Sometimes there is a grain of truth in old wives tales.
 
If you're cranking your glass filled scope/optic enough to think you're going to cause damage, maybe you should work on your Neanderthal reflexes
 
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