The best hunting spotting scopes are definitely those which provide you with unmatched clarity for the price. More of than not we would need to have the people see much better than the normal binoculars. For that extra vision and clarity and magnification you can simply have a system which can be added on top of your hunting binoculars as well as with your hunting rifles.

The top brands for the binoculars spotting scopes are

Burris spotting scopes

Bushnell spotting scopes

Nikon Prostaff spotting scopes

Zeiss spotting scopes

Tasco spotting scopes

Some of the other brands that are available are

Alpen

Apogee

Audubon

Zhumell

Night detective

The best hunting spotting scope are these

Nikon 20-60×82 Prostaff Spotting scope zoom spotting scopes

Swarovski HD-ATS80 High Definition 80mmAngled Spotting Scope body

Tasco World Class 15-45mm Zoom Spotting Scopes

Bushnell Sentry 16-32×50 Spotting scope waterproof

Yukon 30×50 Scout Spotting Scope

Leupold Golden Ring Mark 4 12-40×60mmTactical spotting scope

Landmark year for spotting scopes
In the year 2002 was the landmark year when the hunting enthusiasts were happy to see the range of spotting scopes beginning to appear in the market. The two main were the Swarovski ATS 65 HD and the Zeiss Diascope 65T

Features of spotting scopes

Extra Low dispersion(ED) glass

Rainguard lens coating

Good resolution of about 1.6SOA to 2.4 SOA

Power rings

Waterproof

Fogproof

Rugged construction and armored
Since spotting scopes are going to be used while hunting in all sorts of terrain you will need to have a strong construction on these. Apart from the fact that you will usually not carry them hanging around your neck and hence the rubber armor is the best to save it from the regular wear and tear .

What are spotting scopes?
The spotting scopes offer more magnification than the regular 8 -10 magnification offered by binoculars. The spotting scopes help in getting those targets which are far away and not within the scope of normal binoculars.
The eyepieces that these binoculars have are mostly of zoom type which can be 15-45mm or 20-60mm.
You can consider spotting scope as modified telescope with an upright image as opposed to a telescope which will have reversed image.
The benefit of the spotting scopes vs. binoculars is that these can easily be spot a deer or a buck from a distance which is not that close so as to disturb the animal in a natural surrounding. Most of the animals move in a herd and you can very easily use the spotting scopes to see a deer in the large herd.
You can also use the spotting scopes along with the camera to make to do what is called as digiscoping.
Well as is not good with spotting scopes with so many hunters finding it difficult to use these have the single eyepieces and people used to viewing through binoculars will take time to get adjusted with the spotting scopes. The large magnifications mean that you do not have a bigger field of view and that can be a major factor for a lot of people. Even if you have zoom eyepieces and lower the magnification even then the field of view cannot match that of the binoculars.
The trick is to use the spotting scopes in conjunction with binoculars.
Most of the spotting scopes come with an eyepiece included in the price but a large number of spotting scopes at higher prices only have the spotting scopes as body only.

Using the digital camera adapter and the spotting scope you can easily do the digiscoping

Other types of spotting scopes
Apart from the hunting spotting scopes there are other types of spotting scopes and these are
Birding spotting scopes
Wildlife spotting scope
Stargazing spotting scopes

The other factor is the design and the spotting scopes based on their design are
Straight spotting scope
In this the barrel and the eyepiece are in the same straight line.
Angled spotting scope
These have the eyepiece are 45 degrees from the barrel

Some tips for using the hunting spotting scopes

Always have the spotting scope tripods or the window mount with you while you are on a hunt. Please do not use the scopes in your hand. It is a waste of money if you intend to do that.

If you need a spotting scope which can easily fit in your backpack then use the 60 mm spotting scope.

Always use hunting spotting scopes with a pair of hunting binoculars.

Use spotting scopes when the air is calm and the best times are dawn and dusk. Spotting scopes can easily show the mirages or fog or even haze. Use lower magnifications when these conditions are there.

Always use less magnification for these conditions.

The spotting scopes, range finders, binoculars and rifle optics together are the hunting optics

Here are the simple guidelines for using the four together
Hunting binoculars for the best view of the target at close hand
Hunting spotting scopes for finding those long range movements
Rangefinders for getting that accuracy of the distance and
Rifles scopes while taking that actual aim