If you didn't bang the scope, and you didn't change ammo it' s hard to tell. A foot off at 25 yards sounds like scope problems. Did you re-zero your scope after the "drop" and see if the problem happened again?? ~Andrew
Something isn't coming through to me. When you put the new scope on you zeroed it in for 25 yards, and then the rounds suddenly started to drop a foot again? Odd for two scopes to malfunction in exactly the same manner. ~Andrew
When you peer down the barrel from the breech does the bore appear perfectly round or somewhat oval? I know it sounds like a dumb question but I have spotted bent barrels in this manner. Of course you would know if anything happened to the gun that could have bent the barrel.