OK i just bought a used handi .243 from a friend of mine.... anyways had maybe 20 rounds through it, basically new anyways i went to sight it in today put a new scope on it i get it sighted in at 50 yds everything is fine so i move back to 100 yds changes Nothing, didn't touch anything, and now every shot i take it breaks open as soon as i pull the trigger, i had just cleaned and oiled it, and keep in mind it was in the low teens out side before windchill, so i don't know if maybe something froze or if this is a common problem, this is my first handi....
Thanks,
Cory