This week I decided to cut 4 in. off.So cut her down to 20 in. recrowned with a recessed crown like factory.Took her to the range today to re site.I shoot Sierra 55 gr. hp and 50 or 55 gr. spitzers.It has always shot each around half inch.Shot the hp's first with a four shot group under a half.Then with the spitzerz the first shot was right were it should be but when I shot the second time I could'nt see it.I shot 2 more times and still nothing.I have a pond in the back ground and noticed the bullets did'nt even hit the water.Shot again and the bullet hit the water probably 3 foot above the target.Thought for sure it whould have to be some screws loose or the scope was fried.Put the hp's back in it and 4 shots right above the dot less than a half inch.I have been around guns and have rolled my own loads for 25 yrs. but this has me confussed.Any thoughts. ???