I have a benjamin titan .22 and i group at 15 yards at 1-1.5ft i tried different pellets tightening stock and scope screws, artillery hold and have shot 600-700 pellets well past the break in period. it recently broke and im.waiting to recieve a replacement. i have a stoeger x10 and today shot 10 rounds at 25 yards. 9 of them grouped within a penny size and had.one flyer. how can i improve my accuracy on my soon replacement? also anyone else have this problem?