I have run into a puzzle. I have been shooting a Savage 16F in .223 for about a year. I load, so I have been playing with different loads and bullet weights. Some combinations it likes, some not so much. Even the ones it doesn't like, are still with in a couple of inches in the extreme. Then I loaded some Sierra GameKing 65 Grain with my normal 778 powder. ( Lymans data) I have a 9" twist. They went everywhere! I was having trouble keeping them in a 4" circle on all sides of center! I double check my load data and they were right in the middle. Nothing extreme. No pressure signs. I am no loading guru, but this seems extreme. I would appreciate any thoughts, Thanks