I am going to run some 165gr Partitions in my Encore. I loaded this first batch on the light side. After the cases are fireformed to the chamber I use a feeler gauge to set my full length sizing die so the case head clears the breach face by .001". Learned it from Mike Bellm before they case out with the headspace shims. they still go a bit over 2600fps so I will use them to hunt until I get them all fireformed. We are leaving at 12:00 today so I should have enough time to sight them in. After the brass is fit to the gun and will take a full power load I am expecting to reach 2750fps with that bullet. Good enough.