Without a doubt 270 win. 130 grain Winchester power points. My first rifle, and while it lost its perch as primary rifle a few years ago it gets plenty of backup usage as I leave it locked up at the farm and I can't take guns to work so any afternoon I get off early enough to hunt it get taken out. Just now upgraded the 6-18x50 bushnell banner for a 3-9x50 VX-1. I'd say my primary the last two seasons probably set a 2 season record though, a 338WM shooting 200 grain hornady superformance SSTs. From now on though I see my 270 eventually being passed by a 308 with an undetermined weight partition...