I have had two that just would not work out.
1. Interarms Mark X in 30.06 bought it used had bad headspacing took it back to the dealer I bought it from.
2. Winchester Model 70 243 post 64 Wifes rifle.. Can not get this POS to shoot better than 4" at 100 yards with factory, handloads what ever. Checked the bedding, action screws etc. Wife likes it so still have that one 20 years later..