Question: Why don't scope manufacturer's make the tubes

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Revoman

Revoman

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May 4, 2018
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with six or eight sides? The rings would match of course, but with the flats it would assure that the scope are mounted plumb with the rail at least. Right? I get that there would be some loss of absolute/infinite adjustability, but without the need to adjust for level with the gun it would be easier, no? Some of the tube red dots have that very shape, I have several, why not for a scope? Is it because the manufacturer can't guarantee that the cross hairs are exactly plumb with that kind of a set up?

Bring it.

mike
 
If the rings, scope AND weaver rail or dove tail were absolutely perpendicular and centered over the bore axis, it would be a fine idea.

Otherwise, it's a gamble. I've had off centered bores ( shimmed the scope) twisted dove tails and cock eyed weaver rails. The ability to adjust to the true vertical axis makes it convenient, at least with low to mid priced equipment.

That's my thinking, open to other thoughts 
 
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Biggest problem is airgun manufacturers use weak cheap dovetails designed for .22 RF. Most all dovetail rings lean to one side a few degrees. A few exceptions.. The best thing they could do is drill and tap the receiver and ship the gun.. Let the owner choose the bases. .

BSF almost got it right when they made the detachable base used later on the Beeman R10. But they made it dumb old 11mm dovetails.

Certain Owners would likely use too long screws through the bases and clamp the piston.

I don't think I want a hex or oct scope tube. Be heavier . Oy!
 
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the cost would go up more parts would need to be made....bad idea...like the manufactures do not have a "common" bolt or screw size,can you image the the machining variance in the mounting rings?
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You never owned a center fire rifle? Or some of the best RF's(example Winchester 52)? All use detachable bases. Nobody complains. Weaver or Pic bases can be had for cheap. $10 for most guns. Crummy 11mm dovetails could still be machined on cheap guns. Nobody complains about the level/centered ring placement either!

Look at the ring choices you get. 10,000? Built in scope stops. Many are beautiful steel instead of unaesthetic blocky aluminum. Oy! 

Any centerfire owners lusting for 11mm dovetail? 
 
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Yes indeed I have owned many center fire rifles,and plenty of rimfire.22,Fact collecting old target .22s was a hobby,still have many,though never a 52 sorry to say,75 yes and was more of a Remington guy,,I have a Anshutz model 52 that I compare all accurate rifles with...when I see air rifles shooting as good or almost as good as it I am happy for those air gun owners.

Honestly I do not know what you are talking about,most old target .22 use target peep sights...

a detachable base?...nay sorry I disagree with you..another thing I had to drill and tap for bases on those rifles if I wanted to put a scope on them,another fact,sometimes a gunsmith would say to me,"why would you want to ruin the value of that old target rifle...da a great question,so I did not do it....Value is in the eyes of the beholder.
 
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It would also be ugly as hell. Bullpup guys would love em :)

All about fashion boys! ☝️

But really, too many variables as far as all the tolerances matching up for it to ever end up straight. Plus it would probably be very labor intensive to make and heavy. Making round stuff is easy, any other shape, not so much. 

I don't have a problem with 11mm grooves either. They work fine with decent rings, are lighter and cleaner. 
 
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Thank you for your thoughts and replies.

Hmmmm....maybe I have not relayed my message correctly. The old Leupold Tube Red Dots had a light weight (aluminum) six-sided, picatinny rail mount that worked exceedingly well on my powder burner revolvers.

I just wondered why that was the only time that I had seen or used one and it worked perfectly, at least in my instance. 

Here is a picture of the one that I have. Although it is a short 'scope' I have used this one for well over ten years going ± 45,000 rounds of recoil without a mounting or misalignment hiccup.

Curious why something like this wouldn't work on an air rifle without the recoil especially. You bring up some valid points about misalignment, although I'm not sure that at least some misalignment can't be overcome with the scope adjustments.

1589086502_5707334445eb78926736b52.73407206.PNG


mike
 
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In a perfect world yes but how's about barrels rifled off Center non concentric then what? You're gonna have to bend the barrel and align it perfectly parallel to your scope mounting rail too. Yo!
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Exactly. No matter where the scope ends up you want the vertical crosshairs to intersect the center of the barrel bore. It rarely ends up perfectly centered and above the barrel either due to the gun itself or the mounts. While it is passable for a big game hunting rifle to be off kilter a bit, because a person is aiming at a target the size of a pie plate, airguns require more precision.

Two things you want to make sure of, with precision shooting. 1. Vertical reticle aligned with barrel. 2. Reticles level.

I find visually is the most reliable way to do that. 1. Aim Gun at mirror and rotate scope till crosshairs pass through center of barrel. Be careful that you don’t introduce parallax errors when you do this. 2. Aim gun at leveled surface with horizontal crosshairs tangent to surface while rotating scope bubble level till it shows level. Good scopes will have the reticles square with the turrets but sometimes the turret top doesn’t lend itself well to sitting a level on it.

One other tip. The further you sight your gun in, the more the error is magnified and therefore the more you can tune it out. For example, if you are off 1/8 inch at 15 yards that becomes 3/4” at 90 yards. Just be careful not to accidentally be compensating for wind.


 
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Thank you for your thoughts and replies.

Hmmmm....maybe I have not relayed my message correctly.  The old Leupold Tube Red Dots had a light weight (aluminum) six-sided, picatinny rail mount that worked exceedingly well on my powder burner revolvers.

I just wondered why that was the only time that I had seen or used one and it worked perfectly, at least in my instance. 

Here is a picture of the one that I have. Although it is a short 'scope' I have used this one for well over ten years going ± 45,000 rounds of recoil without a mounting or misalignment hiccup.

Curious why something like this wouldn't work on an air rifle without the recoil especially. You bring up some valid points about misalignment, although I'm not sure that at least some misalignment can't be overcome with the scope adjustments.

1589086502_5707334445eb78926736b52.73407206.PNG


mike
Click to expand...

I highlighted the important part of what you said. There is no vertical line to try and get intersection with the bore for holdover/unders. It's a "floating" DOT.
 
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