I am looking at purchasing a spotting scope would like input. What are the pros and cons on the magnesium body and the aluminum bodied models. I'm leaning toward a 65mm objective for ease of packing instead of the larger 85.

i don't think that the aluminum or magnesium body make 2 hoots worth of difference. Mine is the 85 older model, but i've never seen a better scope. i would lean to the 65 for hunting but the 85 for range use. you can buy both you know

I say go with the biggest glass you can carry and afford. An 85mm scope does take up more space than a 65mm scope but not much more. On the other hand, the 65mm scope has a 33 cm² objective opening while the 85mm scope objective is a whopping 57 cm². That extra light makes a huge difference, especially at higher magnifications.

Magnesium vs aluminum is all about weight. Magnesium weighs 2/3 of what aluminum weighs.

Great scopes, I started with a STM 65mm, but then switched to the 80mm, 9 more oz. and a couple more inches in length, but worth it.

Thanks for the information. Any More input on which model is appreciated. I have looked at a few. selection is limited on getting hands on experience around here.

I have looked at the 80mm ats hd.should I look at a different model? Looking too buy once and cry once.

I think it's worth it to have the HD model.

80mm ATS HD is a great scope with stunning optics.

The new modular models are rated the best in the industry, but are over $3K. I have a friend who is a Swarovski rep if you have specific questions. I can put you in touch with him....PM sent.

I recently got an ATS-80, and it's astounding how sharp it is in low light. At noon, I don't think there's a ton of difference in the better brands. But I'm impressed with the swaro in dawn/dusk conditions. The 80 is marginally heavier and longer than a 65mm class scope, but vastly better. I'd rather skip a donut and carry the 80. Add in a carbon fiber tripod and it's a practical pack option for sure.