Some people have not gotten the IB's to shoot in their rifles. I have two 300 WSM's one loves the 150gr IB's and the other didn't. I am currently trying a 130gr IB in a 270 WSM and it looks promising so far. If your gun doesn't like the IB I would try the Accubond or vice versa.

The scientific name for an animal that doesn't either run from or fight its enemies is lunch.
- Michael Friedman