is it true that the scope is directly fixed to the barrel on modern sniper rifles?

richalexander97 said:

So to clarify.. most of the problems would stem from heat issues... due to the closeness to the barrel?

It just seems that in theory it would keep zero better. You can see where I'm coming from

EDIT...
I was really thinking along the lines of ACOGS, and 223 guns. Eye relief would be less of an issue

Click to expand...

The ACOG is a 4x scope and thus would have eye relief issues. Non-magnifying 'dot' sights can be mounted anywhere from right in from of the eye to the front end of the forend, if it has the correct mounting system. The only issue with putting a dot sight forward is the body may block more of your view than you'd like.

Get off the heat issue; this is minor compared to field of view for magnifying optics, and the non-magnifying optic blocking some of your peripheral vision, and right where you do not want it blocked.

I can only see where you're coming from because I took a step back and thought as if I knew nothing about optics. yes, I could see where you'd think it would work. But I work in the optical field, and the laws of optics do not allow for what you first posted about. (No one would put a dot sight on a WA2000; it'd be a waste.)

Everything in optics is a trade-off. Eye relief for exit pupil and also for power on a variable. Parallax for spherical clarity. (The 'moon edges' on cheap scopes) On variable scopes, the optics are best at one of the settings, (usually the lowest or just above the lowest) because you are viewing that target through many lenses, not just 2. Scope over bore height and gun fit. (to view the eyepiece correctly, you must have something built up on the stock to enable good cheek weld, whether it's a leather wrap, an adjustable stock or a Monte Carlo stock.)

You get the idea. It's not so simple to just plop that scope anywhere on the gun and fire away.

https://www.reddit.com/r/CrappyDesi.../?utm_source=share&utm_medium=web2x&context=3

Not sure about the barrel, but this may be the new way of the future.
Apparently this aids in aiming while cycling the bolt

Not much to add apart from enjoying the dissection of the issue. One tidbit not mentioned but implied by taliv is barrel stress from machining. Even cutting that rear sight dovetail or removing steel to form that flat mounting surface will bring with it unwanted heat and stress during the machining. Then it forever changes harmonics.

Don't look like it. This is the most modern Sniper rifle we have...