Remington 700 SPS Tactical 16.5"

I would do the Barska 2nd Gen (not Gen 1 they were crap) Sniper Scope in 6-24x50. It has the Built-in sniper edged sun-shade is set back in the housing to allow the sun shade to cast a shadow and reduce glare for use in bright sun, Precise and easy-to-use for tactical environments. The 1/8 minute clicks make it AWESOME for close in precision work with the sub sonic ammo.

That being said.....;-)

What are you doing with the rifle? Random 50 to 100 yard shots? Entry Gun?

Basically you are working with ammo that is moving SLOW. Drop with a 180 or 200 grain bullet is going be strong out past 100 yards. Because of that I would run a 20 MOA or 30MOA base for starters I would be thinking 2.5x-8x Power Leupold for up close to 200 yard, or if you want more magnification for some reason go with a adjustable objective in something such as a Leupold in 4.5x-14x.

BTW, hope you got the memo that Remy SPS's aren't Semi-Autos.
 
First off, unless you have some crazy Rem 700 SPS that I am unaware of this thread doesn't belong in the Semi-auto sub-forum. Been a lot of irrelevant posts lately and the carelessness is wearing thin on some of us.

As for the scope, distances you shoot will be short and the bullet drop significant. I won't specify brands but I recommend looking for a variable power scope in a lower magnification range such as a 1-8x, with fairly course adjustments such as 1/2moa or 1/10mil. Adjustments in the 1/8moa range are good for benchrest guys that don't deal with targets at varying distances. On a sub-sonic gun they mean a lot of clicks to keep track of and more time dialing. IIRC 1/8moa adjustment scopes usually have less overall travel too so with your sub-sonic rounds you will be limited on effective range to be able to dial. Or just get a graduated reticle and get good at holds.
 
First off, unless you have some crazy Rem 700 SPS that I am unaware of this thread doesn't belong in the Semi-auto sub-forum. Been a lot of irrelevant posts lately and the carelessness is wearing thin on some of us.

As for the scope, distances you shoot will be short and the bullet drop significant. I won't specify brands but I recommend looking for a variable power scope in a lower magnification range such as a 1-8x, with fairly course adjustments such as 1/2moa or 1/10mil. Adjustments in the 1/8moa range are good for benchrest guys that don't deal with targets at varying distances. On a sub-sonic gun they mean a lot of clicks to keep track of and more time dialing. IIRC 1/8moa adjustment scopes usually have less overall travel too so with your sub-sonic rounds you will be limited on effective range to be able to dial. Or just get a graduated reticle and get good at holds.
McCrazy speaks the truth. My suggestion: As a dedicated Subsonic gun will primarily be used at short range <300. Get the Nikon Buckmaster with the BDC. Shoot the heaviest bullets you can find to mitigate wind.Learn the holdovers. Nikon even has a web based BDC calculator which will calculate holdovers.