No way to answer without knowing if you are a hunter, target shooter, plinker, how much you can spend, etc..
your Winchester model 70 has been selling for anywhere from 700.00 to 1,000 dollars depending on condition.The added price of the scope will depend on the make,and overall age and condition of the scope.
100-1000 USD
also has unetrl fixed 10x scope
condition of rifle is very good, it also has a 3x9 leipold (sp?) scope.
has a 4x redfield scope good condition
The value of a pre 64 model 70 cal. 270 in good shape will go for somewhere around 1200.00 to 1800.00.. with out anykind of a scope.
Model 70
Between 350-475 dollars,depending on overall condition and a good bore.
I use a 2.5-8x36 VX3...
The value depends on condition of the rifle and the model. IE scratches and dents in the stock etc... also how many rounds have been shot through the barrel. If your below 300 rounds there is still some barrel life left. Guessing you have an average model 70 no bull barrel or Coyote model 70 without a scope 400.00 to 500.00 if in great condition. However when ever I buy a used rifle that can shoot in the 3000 fps range I bore scope it first to see if there is barrel life left.
The XTR suffix was on the model 70 rifles until 1989.I know there were the model 70 featherweight,The model 70 XTR european featherweight,the model 70 sporter.
I paid $100 for a nice clean one with a 4X scope. This was at a dealer shop he took 25% of the sale price for his fee.