I sure killed a bunch of caribou for a few years with 100 grain Pro-Hunters in my 6mm; very good bullets. The 85 Partition in the same rifle probably dropped them a bit quicker and from more variety of angles. I also used the 139 Interlock in a 7mm-08 so am familiar with what that weight does in a similar cartridge. I don't think you have any good excuses for failing among your choices.

Sometimes, the air you 'let in'matters less than the air you 'let out'.