Just want to say I have been a long time lurker on the site but this is my first post. Very informative site. Anyway my question is about a Rossi thriple threat that I bought for my kids. It came with a 20 guage shotgun and a 22 and 243 rifle barrels. for some reason I can not get the 243 to sight in at all. After a box of bullets and 2 scope changes I still can not hit the broad side of a barn at just 75 yards. Could it be bad rifling in the barrel? The gun was not that expensive so is that just the quality of the gun? Anyone else had this kind of experience with this particular gun? Any suggestions would be greatly appreciated. Thanks!