im very new to shooting with a scope, just picked up a savage 200 in 308 with a bushnell 3200 elite the other day and have been reading up on how to properly bore sight. i didnt know that it was as easy as taking out the bolt and looking down the bore so i bought one of those bushnell magnetic bore sighter. my problem using the magnetic bore sighter, it seems straightforward enough just match your cross hairs with the ones on the bore sight but it seems everytime i sighted the gun and put it away and then check it again the next day the two cross hairs don;t line up anymore. i've also tryed looking through the bore and it seems good so should i just stop using the bore sighter?