RE: Hornady Interbonds??
I have a 7mmRUM that shoots <1"@100 yds with IBs in both 139 and 154 grain weights. My 300 WBY and 30-06 love the 165 grainers.
My brother shoots the Hornady factory IB loads in his 30-06 (165gr) and it groups awesome.
I have heard of others having trouble with the IBs grouping, so you guys aren't alone. In my "go to" guns, however, I wouldn't trade them for anything else right now.
FYI - I recovered a 139 gr out of a buck I shot last fall, performance was unbelievable, bullet did all kinds of damage, and kept like 85% of its weight. And that was cranked up to 3600 fps!!