you would have to post pictures. and what stock is on it, What is the barrel length, How many rounds thru it, condition of finish on gun, what brand is the barrel? If it is just a modified rem 700 and in new condition it would be around $800 or so used with the scope. if you tried to trade it in to a dealer you are probably in the $500 Range.
"A free people ought to be armed" George Washington 1790
‘For those who would give up essential liberty to purchase a little temporary safety, deserve neither Liberty nor safety.’ —Ben Franklin.”