Interesting I have not seen the amount of variation you are getting with the 129 but have only used it on three deer so far. The Interbond in .270 & .284 @140 grains has been excellent. A good balance of expansion and usually complete penetration. But the 6.5 x 129 grain Interlock has been so good so far I see no reason to switch.

"When you disarm the people, you commence to offend them and show that you distrust them either through cowardice or lack of confidence, and both of these opinions generate hatred." Niccolo Machiavelli