I purchased some Hornady Interbonds and they are 129 grains in 6.5mm and from some practice shooting, they seem close to my basic choice of the Nosler Partition. Both have high BC and shoot well from my 260 Rem. The Interbonds are more expensive, quite more, but this may be partly to date of purchase. I shot just one mid-size deer with the Hornady and to the same good result. I think I will stay with the Nosler but this one might offer deeper penetration, although it exited the deer and was not found. I think they might be worth the money on larger game with this small bullet. oh the Nosler is 125 gr.