mine was drop in w/o issue and shoots excellent. is yours an SR that it already threaded or do you need someone to thread it for you? i didn't see a caliber, .223, .308, if you didn't know, 2 different thread patterns. i would suggest that you drop it in the stock, put the scope on and shoot it to see what it does. if it does not perform like you want, assuming you got the scope on correctly as it seems you don't have much gun/tool experience, then take it to a smith. look in your local trade paper and you can find good ones that don't charge you $50 an hour. Read, Read, Read......Read everything about your gun, caliber, scope type, ammo type (once you find something accurate that it likes) and then read some more. ask questions here, most, must say most, people on this site are friendly and will answer your questions. some you have to take with a bit of salt since they serve sarcasm along with advice. we all started new, a lot of us, including myself, started longer ago than we care to admit so we are jaded a little to the basic questions. the Search function is also a good way to start and there are more Savage threads out there on the net besides this one also. My .03