Hello Frizz...well ,you never really know whom you are talking to on a phone(he could have been smokin something),but this guy was supposed to be sierras expert on these bullets,otherwise..if he would have suggested using the 100 grainers i would have tried them first,but no ,this crackhead recommended the 85 grainers..the hollow point boattail,and they worked well for me....but just to be on the safe side i am going to call those crack heads again next week and ask them again about the 100 grainers....evidently they work well for you.......sierra bullets are so tough you can probably shoot moose with them 100 grainers....no...only joking! Game King was the 85 grainer he recommended....this is getting funny...we are really getting into our bullets here!.....i just may try those 100 grainers myself!...will keep you posted!